Download ADM209 数据手册DataSheet 下载

0.1 µF, 5 V Powered CMOS
RS-232 Drivers/Receivers
ADM206–ADM211/ADM213
FEATURES
TYPICAL OPERATING CIRCUIT
0.1 µF to 10 µF capacitors
120 kB/s data rate
Two receivers active in shutdown (ADM213)
On-board dc-to-dc converters
±9 V output swing with 5 V supply
Low power (15 mW)
Low power shutdown ≤ 5 µW
±30 V receiver input levels
Latch-up free
Plug-in upgrade for MAX205-211/213
5V INPUT
TTL/CMOS
INPUTS1
APPLICATIONS
Computers
Peripherals
Modems
Printers
Instruments
TTL/CMOS
OUTPUTS
0.1µF
16V
+
0.1µF
16V
+
12
C1+
14
C1–
15
C2+
16
C2–
+5V TO +10V
VOLTAGE
DOUBLER
VCC 11
+10V TO –10V
VOLTAGE
INVERTER
V– 17
V+ 13
0.1µF
+ 6.3V
0.1µF
+ 16V
T1IN
7
T1
2
T1OUT
T2IN
6
T2
3
T2OUT
T3IN
20
T3
1
T3OUT
T4IN
21
T4
28
T4OUT
R1OUT
8
R1
9
R1IN
R2OUT
5
R2
4
R2IN
R3OUT
26
R3
27
R3IN
R4OUT
22
R4
23
R4IN
R5OUT
19
R5
18
R5IN
EN
24
25
SD
www.BDTIC.com/ADI
GND
ADM211
+
0.1µF
RS-232
OUTPUTS
RS-232
INPUTS2
NOTES
1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2INTERNAL 5kΩ PULL-DOWN RESIST OR ON EACH RS-232 INPUT.
GENERAL DESCRIPTION
The ADM2xx family of line drivers/receivers is intended for all
EIA-232-E and V.28 communications interfaces, especially in
applications where ±12 V is not available. The ADM206,
ADM211, and ADM213 feature a low power shutdown mode
that reduces power dissipation to less than 5 µW, making them
ideally suited for battery-powered equipment. The ADM213
has an active low shutdown and an active high receiver-enable
control. Two receivers of the ADM213 remain active during
shutdown. This feature is useful for ring indicator monitoring.
Figure 1.
All members of the ADM2xx family, except the ADM209,
include two internal charge pump voltage converters that allow
operation from a single 5 V supply. These parts convert the 5 V
input power to the ±10 V required for RS-232 output levels.
The ADM209 is designed to operate from 5 V and 12 V supplies.
An internal +12 V to –12 V charge pump voltage converter
generates the –12 V supply.
Table 1. Selection Table
Part
Number
ADM206
ADM207
ADM208
ADM209
ADM211
ADM213
Power Supply
Voltage
5V
5V
5V
5 V and 9 V to
13.2 V
5V
5V
TTL ThreeState EN
Number of RS232 Drivers
4
5
4
3
Number of
RS-232 Receivers
3
3
4
5
External
Capacitors
4
4
4
2
Low Power
Shutdown (SD)
Yes
No
No
No
Yes
No
No
Yes
Number of Receivers
Active in Shutdown
0
0
0
0
4
4
5
5
4
4
Yes
Yes (SD)
Yes
Yes (EN)
0
2
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
00067-0-001
10
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2005 Analog Devices, Inc. All rights reserved.
ADM206–ADM211/ADM213
TABLE OF CONTENTS
Specifications .................................................................................... 3
General Information...................................................................... 11
Absolute Maximum Ratings ........................................................... 4
Circuit Description .................................................................... 11
ESD Caution.................................................................................. 4
Application Hints....................................................................... 12
Pin Configurations and Functional Descriptions........................ 5
Outline Dimensions....................................................................... 13
Typical Performance Characteristics............................................. 9
Ordering Guide .......................................................................... 15
REVISION HISTORY
1/05—Data Sheet Changed from Rev. B to Rev. C
Changes to Specifications...............................................................3
Change to Receivers section.........................................................11
Change to Driving Long Cables section.....................................12
Updated Outline Dimensions......................................................13
Changes to Ordering Guide.........................................................15
6/02—Data Sheet Changed from Rev. A to Rev. B
Removed all references to ADM205 ..............................Universal
www.BDTIC.com/ADI
3/02—Data Sheet Changed from Rev. 0 to Rev. A
Changes to numbers in Min/Typ/Max column of
Specifications page ..........................................................................2
Updated Figures...........................................................................8, 9
Revision 0: Initial Version
Rev. C | Page 2 of 16
ADM206–ADM211/ADM213
SPECIFICATIONS
VCC = 5 V ± 10% (ADM206, ADM207, ADM208, ADM209, ADM211, ADM213); V+ = 9 V to 13.2 V (ADM209); C1–C4 = 0.1 µF ceramic.
All specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
Output Voltage Swing
VCC Power Supply Current
Min
±5
V+ Power Supply Current
Shutdown Supply Current
Input Logic Threshold Low, VINL
Input Logic Threshold High, VINH
Logic Pull-Up Current
RS-232 Input Voltage Range1
RS-232 Input Threshold Low
RS-232 Input Threshold High
RS-232 Input Hysteresis
RS-232 Input Resistance
TTL/CMOS Output Voltage Low, VOL
TTL/CMOS Output Voltage High, VOH
TTL/CMOS Output Leakage Current
Output Enable Time (TEN)
Output Disable Time (TDIS)
Propagation Delay
Transition Region Slew Rate
Output Resistance
RS-232 Output Short Circuit Current
Typ
±9
5
0.4
3.5
1
Max
13
1
5
10
0.8
2.0
10
–30
0.8
3
1.25
1.9
0.65
5
25
+30
2.4
7
0.4
3.5
0.05
115
165
0.5
8
±10
±12
±60
Unit
V
mA
mA
mA
µA
V
V
µA
V
V
V
V
kΩ
V
V
µA
ns
ns
µs
V/µs
Ω
mA
Test Conditions/Comments
All transmitter outputs loaded with 3 kΩ to ground
No load
No load, ADM209
No load, V+ = 12 V, ADM209 only
TIN, EN, SD, EN, SD
TIN, EN, SD, EN, SD
TIN = 0 V
TA = 0°C to 85°C
IOUT = 1.6 mA
IOUT = –1.0 mA
EN = VCC, EN = 0 V, 0 V ≤ ROUT ≤ VCC
ADM206, ADM209, ADM211 (Figure 24. CL = 150 pF)
ADM206, ADM209, ADM211 (Figure 24. RL = 1 kΩ)
RS-232 to TTL
RL = 3 kΩ, CL = 2500 pF; measured from +3 V to –3 V or –3 V to +3 V
VCC = V+ = V– = 0 V, VOUT= ± 2 V
www.BDTIC.com/ADI
1
5
300
Guaranteed by design.
Rev. C | Page 3 of 16
ADM206–ADM211/ADM213
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 3.
Parameter
VCC
V+
V–
Input Voltages
TIN
RIN
Output Voltages
TOUT
ROUT
Short-Circuit Duration
TOUT
Power Dissipation
N-24 PDIP (Derate 13.5 mW/°C
above 70°C)
R-24 SOIC (Derate 12 mW/°C
above 70°C)
R-28 SOIC (Derate 12.5 mW/°C
above 70°C)
RS-24 SSOP (Derate 12 mW/°C
above 70°C)
RS-28 SSOP (Derate 10 mW/°C
above 70°C)
Thermal Impedance, θJA
N-24 PDIP
R-24 SOIC
R-28 SOIC
RS-24 SSOP
RS-28 SSOP
Operating Temperature Range
Industrial (A Version)
Storage Temperature Range
Lead Temperature, Soldering
Vapor Phase (60 s)
Infrared (15 s)
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods of
time may affect device reliability.
Min
–0.3 V to +6 V
(VCC – 0.3 V) to +14 V
+0.3 V to –14 V
–0.3 V to (VCC + 0.3 V)
±30 V
(V+, +0.3 V) to (V–, –0.3 V)
–0.3 V to (VCC + 0.3 V)
Continuous
1000 mW
850 mW
900 mW
850 mW
www.BDTIC.com/ADI
900 mW
120°C/W
85°C/W
80°C/W
115°C/W
100°C/W
–40°C to +85°C
–65°C to +150°C
300°C
215°C
220°
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. C | Page 4 of 16
ADM206–ADM211/ADM213
PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS
T3OUT
1
24
T4OUT
T3OUT
1
24 T4OUT
T1OUT
2
23
R2IN
T1OUT
2
23 R2IN
T2OUT
3
22
R2OUT
T2OUT
3
22 R2OUT
R1IN
4
21
SD
R1IN
4
21 T5IN
R1OUT
5
20
EN
R1OUT
5
T2IN
6
T2IN
6
8
17
R3OUT
VCC
9
16
C1+ 10
20 T5OUT
8
17 R3OUT
R3IN
VCC
9
16 R3IN
15
V–
C1+ 10
V+ 11
14
C2–
C1– 12
13
C2+
00067-0-002
T1IN
GND
Figure 2. ADM206 PDIP/SOIC/SSOP Pin Configuration
15 V–
V+ 11
14 C2–
C1– 12
13 C2+
Figure 4. ADM207 PDIP/SOIC/SSOP Pin Configuration
5V INPUT
5V INPUT
0.1µF
6.3V
0.1µF
16V
TTL/CMOS
INPUTS1
+
10
C1+
12
C1–
13
C2+
14
T1IN
7
T2IN
6
T3IN
C2–
+5V TO +10V
VOLTAGE
DOUBLER
VCC 9
+10V TO –10V
VOLTAGE
INVERTER
V– 15
V+ 11
0.1µF
+ 6.3V
+
0.1µF
0.1µF
+ 16V
T1
2
T1OUT
T2
3
T2OUT
18
T3
1
T3OUT
T4IN
19
T4
24
T4OUT
R1OUT
5
R1
4
R1IN
R2OUT
22
R2
23
R2IN
R3OUT
17
R3
16
R3IN
EN
20
ADM206
21
SD
0.1µF
6.3V
+
0.1µF
16V
+
T1IN
10
C1+
12
C1–
13
C2+
14
C2–
+5V TO +10V
VOLTAGE
DOUBLER
VCC 9
+10V TO –10V
VOLTAGE
INVERTER
V– 15
V+ 11
T1
7
www.BDTIC.com/ADI
GND
RS-232
OUTPUTS
TTL/CMOS
INPUTS1
RS-232
INPUTS2
TTL/CMOS
OUTPUTS
+
0.1µF
0.1µF
+ 16V
2
T1OUT
6
T2
3
T2OUT
T3IN
18
T3
1
T3OUT
T4IN
19
T4
24
T4OUT
T5IN
5
T5
20
T5OUT
R1OUT
22
R1
4
R1IN
R2OUT
17
R2
23
R2IN
R3OUT
20
R3
16
R3IN
8
NOTES
1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
0.1µF
+ 6.3V
T2IN
GND
RS-232
OUTPUTS
RS-232
INPUTS2
ADM207
8
00067-0-003
TTL/CMOS
OUTPUTS
+
Figure 3. ADM206 Typical Operating Circuit
NOTES
1INTERNAL
2INTERNAL
400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 5. ADM207 Typical Operating Circuit
Rev. C | Page 5 of 16
00067-0-005
T1IN
GND
ADM207
TOP VIEW 19 T4IN
7 (Not to Scale) 18 T3IN
00067-0-004
ADM206
TOP VIEW 19 T4IN
7 (Not to Scale) 18 T3IN
T2OUT
1
24
T3OUT
R1OUT
1
24
T1IN
T1OUT
2
23
R3IN
R1IN
2
23
T2IN
R2IN
3
22
R3OUT
GND
3
22
R2OUT
R2OUT
4
21
T4IN
VCC
4
21
R2IN
T1IN
5
20
T4OUT
V+
5
20
T2OUT
R1OUT
6
C+
6
ADM208
GND
8
17
R4OUT
VCC
9
16
R4IN
C1+ 10
15
V–
V+ 11
14
C2–
C1– 12
13
C2+
00067-0-006
R1IN
TOP VIEW 19 T3IN
7 (Not to Scale) 18 T2IN
Figure 6. ADM208 PDIP/SOIC/SSOP Pin Configuration
ADM209
C–
TOP VIEW 19 T1OUT
7 (Not to Scale) 18 R3IN
V–
8
17
R3OUT
R5IN
9
16
T3IN
R5OUT 10
15
NC
R4OUT 11
14
EN
R4IN 12
13
T3OUT
00067-0-008
ADM206–ADM211/ADM213
Figure 8. ADM209 PDIP/SOIC/SSOP Pin Configuration
5V INPUT
5V INPUT
0.1µF
16V
T1IN
TTL/CMOS
INPUTS1
TTL/CMOS
OUTPUTS
10 C1+
12 C1–
+
13 C2+
14 C2–
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
VCC 9
V+ 11
V– 15
T1
5
2
0.1µF
+ 6.3V
0.1µF
16V
+
6 C1+
7 C1–
VCC 4
+12V TO –12V
VOLTAGE
INVERTER
0.1µF
+ 16V
18
T2
T3IN
19
T3
24
T3OUT
T4IN
21
T4
V– 8
+
0.1µF
16V
T1IN
20
T4OUT
TTL/CMOS
INPUTS1
24
T1
19
T1OUT
T2OUT
T2IN
23
T2
20
T2OUT
13
T3OUT
www.BDTIC.com/ADI
R1OUT
6
R1
7
R1IN
R2OUT
4
R2
3
R2IN
R3OUT
22
R3
23
R3IN
R4OUT
17
R4
16
R4IN
GND
9V TO 13.2V
INPUT
V+ 5
T1OUT
T2IN
1
0.1µF
+
+
0.1µF
RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
RS-232
INPUTS2
ADM208
16
R1OUT
1
R1
2
R1IN
R2OUT
22
R2
21
R2IN
R3OUT
17
R3
18
R3IN
R4OUT
11
R4
12
R4IN
R5OUT
10
R5
9
R5IN
EN
14
T3
GND
ADM209
15
RS-232
INPUTS2
NC
3
00067-0-007
8
NOTES
1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
T3IN
RS-232
OUTPUTS
Figure 7. ADM208 Typical Operating Circuit
NOTES
1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 9. ADM209 Typical Operating Circuit
Rev. C | Page 6 of 16
00067-0-009
0.1µF
6.3V
+
ADM206–ADM211/ADM213
T4OUT
T3OUT 1
28
T1OUT 2
27
R3IN
T2OUT 3
26
R3OUT
25
R2OUT 5
T2IN 6
SD
24 EN
ADM211
23
R4IN
20
T3IN
19
R5OUT
VCC 11
18
R5IN
V–
16
C2–
C1– 14
15
C2+
00067-0-010
R1IN 9
GND 10
17
T4OUT
R3IN
T2OUT 3
26
R3OUT
R2IN 4
25
SD
R2OUT 5
24
EN
T2IN 6
23
R4IN*
ADM213
TOP VIEW 22 R4OUT*
R1OUT 8 (Not to Scale) 21 T4IN
TOP VIEW 22 R4OUT
R1OUT 8 (Not to Scale) 21 T4IN
V+ 13
27
T1IN 7
T1IN 7
C1+ 12
28
T3IN
R1IN 9
20
GND 10
19
R5OUT*
VCC 11
18
R5IN*
C1+ 12
17
V–
V+ 13
16
C2–
C1– 14
15
C2+
* ACTIVE IN SHUTDOWN
Figure 10. ADM211 SOIC/SSOP Pin Configuration
Figure 12. ADM213 SOIC/SSOP Pin Configuration
5V INPUT
5V INPUT
0.1µF
16V
+
12
C1+
14
C1–
15
C2+
16
T1IN
7
T2IN
6
C2–
+5V TO +10V
VOLTAGE
DOUBLER
VCC 11
+10V TO –10V
VOLTAGE
INVERTER
V– 17
V+ 13
0.1µF
+ 6.3V
0.1µF
0.1µF
+ 16V
0.1µF
16V
+
0.1µF
16V
+
12 C1+
14 C1–
15 C2+
16 C2–
+5V TO +10V
VOLTAGE
DOUBLER
VCC 11
+10V TO –10V
VOLTAGE
INVERTER
V– 17
V+ 13
www.BDTIC.com/ADI
T1
2
T1OUT
T2
3
T2OUT
T3IN
20
T3
1
T3OUT
T4IN
21
T4
28
T4OUT
R1OUT
8
R1
9
R1IN
R2OUT
5
R2
4
R2IN
R3OUT
26
R3
27
R3IN
R4OUT
22
R4
23
R4IN
R5OUT
19
R5
18
R5IN
25
SD
EN
+
24
GND
ADM211
RS-232
OUTPUTS
TTL/CMOS
INPUTS1
TTL/CMOS
OUTPUTS
RS-232
INPUTS2
0.1µF
+ 6.3V
0.1µF
+ 16V
T1IN
7
T1
2
T1OUT
T2IN
6
T2
3
T2OUT
T3IN
20
T3
1
T3OUT
T4IN
21
T4
28
T4OUT
R1OUT
8
R1
9
R1IN
R2OUT
5
R2
4
R2IN
R3OUT
26
R3
27
R3IN
R4OUT3
22
R4
23
R4IN3
R5OUT3
19
R5
18
R5IN3
EN
24
25
SD
GND
ADM213
+
0.1µF
RS-232
OUTPUTS
RS-232
INPUTS2
10
10
NOTES
1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
NOTES
1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
3ACTIVE IN SHUTDOWN.
Figure 11. ADM211 Typical Operating Circuit
Figure 13. ADM213 Typical Operating Circuit
Rev. C | Page 7 of 16
00067-0-013
TTL/CMOS
OUTPUTS
+
00067-0-011
TTL/CMOS
INPUTS1
0.1µF
16V
00067-0-012
R2IN 4
T3OUT 1
T1OUT 2
ADM206–ADM211/ADM213
Table 4. Pin Function Descriptions
Mnemonic
VCC
V+
V–
GND
C+
C–
C1+
C1–
C2+
C2–
TIN
TOUT
RIN
ROUT
EN/EN
SD/SD
Function
Power Supply Input. 5 V ± 10%.
Internally Generated Positive Supply (10 V nominal) on all parts, except ADM209 . The ADM209 requires an external 9 V to
13.2 V supply.
Internally Generated Negative Supply (–10 V Nominal).
Ground Pin. Must be connected to 0 V.
(ADM209 only) External capacitor (+ terminal) is connected to this pin.
(ADM209 only) External capacitor (– terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (+ terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (– terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (+ terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (– terminal) is connected to this pin.
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 kΩ pull-up resistor to VCC is connected to
each input.
Transmitter (Driver) Outputs. These are RS-232 levels (typically ± 10 V).
Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is connected to each
input.
Receiver Outputs. These are TTL/CMOS levels.
Enable Input. Active low on ADM206, ADM209, and ADM211. Active high on ADM213. This input is used to enable/disable the
receiver outputs. With EN = low (EN = high ADM213), the receiver outputs are enabled. With EN = high (EN = low ADM213),
the outputs are placed in a high impedance state. This is useful for connecting to microprocessor systems.
Shutdown Input. Active high on ADM206 and ADM211. Active low on ADM213. With SD = high on the ADM206 and ADM211,
the charge pump is disabled, the receiver outputs are placed in a high impedance state, and the driver outputs are turned off.
With SD = low on the ADM213, the charge pump is disabled, the driver outputs are turned off, and all receivers, except R4
and R5, are placed in a high impedance state. In shutdown, the power consumption reduces to 5 µW.
No Connect. No connections are required to this pin.
www.BDTIC.com/ADI
NC
Table 5. ADM206 and ADM211 Truth Table
SD
0
0
1
EN
0
1
0
Status
Normal Operation
Normal Operation
Shutdown
Transmitters T1–T5
Enabled
Enabled
Disabled
Receivers R1–R5
Enabled
Disabled
Disabled
Transmitters T1–T4
Disabled
Disabled
Enabled
Enabled
Receivers R1–R3
Disabled
Disabled
Disabled
Enabled
Table 6. ADM213 Truth Table
SD
0
0
1
1
EN
0
1
0
1
Status
Shutdown
Shutdown
Normal Operation
Normal Operation
Rev. C | Page 8 of 16
Receivers R4, R5
Disabled
Enabled
Disabled
Enabled
ADM206–ADM211/ADM213
TYPICAL PERFORMANCE CHARACTERISTICS
15
15
10
10
V+
Tx O/P HIGH
5
Tx O/P (V)
0
0
–5
–5
V–
–10
Tx O/P LOW
–15
0
5
10
LOAD CURRENT (mA)
20
15
00067-0-014
–10
–15
Figure 14. Charge Pump V+, V– vs. Load Current
0
8
10
Figure 17. Transmitter Output Voltage vs. Load Current
350
50
45
300
V– IMP
40
250
35
30
IMPEDANCE (Ω)
SLEW RATE (V/µs)
4
6
LOAD CURRENT (mA)
2
00067-0-017
V+/V– (V)
5
200
www.BDTIC.com/ADI
25
NEGATIVE
SLEW
20
15
150
V+ IMP
100
10
0
500
1000
1500
2000
LOAD CAPACITANCE (pF)
2500
3000
00067-0-015
0
0
4.5
4.7
4.9
5.1
5.3
5.5
VCC (V)
Figure 15. Transmitter Slew Rate vs. Load Capacitance
Figure 18. Charge Pump Impedance vs. VCC
9
7
Tx O/P HIGH LOADED
5
T
1
1
0
–1
SD
V+
T
2
–3
3
T
–5
–9
V–
Tx O/P LOW LOADED
4.0
4.5
5.0
VCC (V)
5.5
6.0
3.1V
CH1 5.00V
CH2 5.00V M50.0µs CH1
CH3 5.00V BW
V+, V– EXITING SHUTDOWN (SD)
Figure 16. Transmitter Output Voltage vs. VCC
00067-0-019
–7
00067-0-016
Tx O/P (V)
3
Figure 19. Charge Pump, V+, V– Exiting Shutdown
Rev. C | Page 9 of 16
00067-0-018
50
POSITIVE
SLEW
5
ADM206–ADM211/ADM213
Tx INPUT
T
1
T
1
T
Tx INPUT
T
2
2
Tx OUTPUT
800mV
CH1 5.00V
Figure 20. Transmitter Output Loaded Slew Rate
CH2 5.00V M1.00µs CH1
800mV
Figure 21. Transmitter Output Unloaded Slew Rate
www.BDTIC.com/ADI
Rev. C | Page 10 of 16
00067-0-021
CH2 5.00V M1.00µs CH1
00067-0-020
CH1 5.00V
Tx OUTPUT
ADM206–ADM211/ADM213
The ADM206–ADM211/ADM213 family of RS-232 drivers/
receivers is designed to solve interface problems by meeting the
EIA-232-E specifications while using a single digital 5 V supply.
The EIA-232-E standard requires transmitters that will deliver
±5 V minimum on the transmission channel and receivers that
can accept signal levels down to ±3 V. The ADM206–ADM211/
ADM213 meet these requirements by integrating step-up voltage
converters and level shifting transmitters and receivers onto the
same chip. CMOS technology is used to keep the power dissipation to an absolute minimum. A comprehensive range of
transmitter/receiver combinations is available to cover most
communication needs. The ADM206–ADM211/ADM213 are
modifications, enhancements, and improvements to the AD230–
AD241 family and derivatives thereof. They are essentially plugin compatible and do not have materially different applications.
The ADM206, ADM211, and ADM213 are particularly useful in
battery-powered systems because they feature a low power shutdown mode that reduces power dissipation to less than 5 µW.
The ADM209 includes only a negative charge pump converter
and is intended for applications where a +12 V is available.
To facilitate sharing a common line or for connection to a
microprocessor data bus, the ADM206, the ADM209, the
ADM211, and the ADM213 feature an enable (EN) function.
When the receivers are disabled, their outputs are placed in a
high impedance state.
S3
S1
V+
FROM
VOLTAGE
DOUBLER
GND
C2
+
S2
C4
+
S4
GND
V– = –(V+)
INTERNAL
OSCILLATOR
00067-0-023
GENERAL INFORMATION
Figure 23. Charge Pump Voltage Inverter
Capacitors C3 and C4 are used to reduce the output ripple.
Their values are not critical and can be reduced if higher levels
of ripple are acceptable. The charge pump capacitors C1 and C2
may also be reduced at the expense of higher output impedance
on the V+ and V– supplies.
The V+ and V– supplies may also be used to power external
circuitry if the current requirements are small.
Transmitters (Drivers)
The drivers convert TTL/CMOS input levels into EIA-232-E
output levels. With VCC = +5 V and driving a typical EIA-232-E
load, the output voltage swing is ±9 V. Even under worst-case
conditions, the drivers are guaranteed to meet the ±5 V EIA232-E minimum requirement.
The input threshold levels are both TTL- and CMOS-compatible
with the switching threshold set at VCC/4. With a nominal VCC =
5 V, the switching threshold is 1.25 V typical. Unused inputs
may be left unconnected, because an internal 400 kΩ pull-up
resistor pulls them high, forcing the outputs into a low state.
www.BDTIC.com/ADI
CIRCUIT DESCRIPTION
The internal circuitry in the ADM206–ADM211/ADM213
consists of three main sections: (a) a charge pump voltage
converter; (b) RS-232-to-TTL/CMOS receivers; and
(c) TTL/CMOS-to-RS-232 transmitters.
Receivers
Charge Pump DC-to-DC Voltage Converter
The charge pump voltage converter consists of an oscillator and
a switching matrix. The converter generates a ±10 V supply
from the 5 V input. This is done in two stages using a switched
capacitor technique, as illustrated in Figure 22 and Figure 23.
First, the 5 V input supply is doubled to 10 V using capacitor
C1 as the charge storage element. The 10 V level is then
inverted to generate –10 V using C2 as the storage element.
S3
C1
S2
+
C3
+
S4
GND
INTERNAL
OSCILLATOR
Figure 22. Charge Pump Voltage Doubler
V+ = 2VCC
The receivers are inverting level shifters that accept EIA-232-E
input levels (±5 V to ±15 V) and translate them into 5 V TTL/
CMOS levels. The inputs have internal 5 kΩ pull-down resistors
to ground and are also protected against overvoltages of up to
±30 V. The guaranteed switching thresholds are 0.8 V minimum
and 2.4 V maximum, well within the ±3 V EIA-232-E requirement. The low level threshold is deliberately positive, since it
ensures that an unconnected input will be interpreted as a
low level.
The receivers have Schmitt-trigger inputs with a hysteresis level
of 0.65 V. This ensures error-free reception for both noisy
inputs and inputs with slow transition times.
Shutdown (SD)
VCC
00067-0-022
S1
VCC
As required by the EIA-232-E standard, the slew rate is limited
to less than 30 V/µs, without the need for an external slew
limiting capacitor, and the output impedance in the power-off
state is greater than 300 Ω.
The ADM206–ADM211/ADM213 feature a control input that
may be used to disable the part and reduce the power consumpion to less than 5 ΩW. This is very useful in battery-operated
systems. During shutdown, the charge pump is turned off, the
transmitters are disabled, and all receivers except R4 and R5 on
the ADM213 are put into a high impedance disabled state.
Rev. C | Page 11 of 16
ADM206–ADM211/ADM213
Receivers R4 and R5 on the ADM213 remain enabled during
shutdown. This feature allows monitoring external activity
while the device is in a low power shutdown mode. The
shutdown control input is active high on all parts except the
ADM213, where it is active low. See Table 5 and Table 6.
APPLICATION HINTS
Driving Long Cables
Enable Input
The ADM209, ADM211, and ADM213 feature an enable input
used to enable or disable the receiver outputs. The enable input
is active low on the ADM209 and ADM211 and active high on
the ADM213. See Table 5 and Table 6. When the receivers are
disabled, their outputs are placed in a high impedance state.
This function allows the outputs to be connected directly to a
microprocessor data bus. It can also be used to allow receivers
from different devices to share a common data line. The timing
diagram for the enable function is shown in Figure 24.
In accordance with the EIA-232-E standard, long cables are
permissible provided the total load capacitance does not exceed
2500 pF. For longer cables that do exceed this, it is possible to
trade off baud rate for cable length. Large load capacitances cause
a reduction in slew rate, and therefore the maximum transmission baud rate is decreased. The ADM206–ADM211/ADM213
are designed to minimize the slew rate reduction that occurs as
load capacitance increases.
EN*
For the receivers, it is important that a high level of noise
immunity be inbuilt so that slow rise and fall times do not
cause multiple output transitions as the signal passes slowly
through the transition region. The ADM206–ADM211/
ADM213 have 0.65 V of hysteresis to guard against this. This
ensures that even in noisy environments error-free reception
can be achieved.
0V
High Baud Rate Operation
3V
TEN
3.5V
VOH – 0.1V
0.8V
VOL + 0.1V
ROUT
* POLARITY OF EN IS REVERSED FOR ADM213.
00067-0-024
TDIS
The ADM206–ADM211/ADM213 feature high slew rates,
permitting data transmission at rates well in excess of the EIA232-E specification. The drivers maintain ±5 V signal levels at
data rates up to 120 kB/s under worst-case loading conditions.
www.BDTIC.com/ADI
Figure 24. Enable Timing
Rev. C | Page 12 of 16
ADM206–ADM211/ADM213
OUTLINE DIMENSIONS
1.185 (30.01)
1.165 (29.59)
1.145 (29.08)
24
13
1
12
0.180
(4.57)
MAX
0.150 (3.81)
0.130 (3.30)
0.110 (2.79)
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
0.015 (0.38) MIN
0.022 (0.56)
0.018 (0.46)
0.014 (0.36)
0.100
(2.54)
BSC
8.50
8.20
7.90
0.295 (7.49)
0.285 (7.24)
0.275 (6.99)
24
12
1
PIN 1
0.015 (0.38)
0.010 (0.25)
0.008 (0.20)
COMPLIANT TO JEDEC STANDARDS MO-095AG
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
8.20
7.80
7.40
5.60
5.30
5.00
0.150 (3.81)
0.135 (3.43)
0.120 (3.05)
0.060 (1.52) SEATING
0.050 (1.27) PLANE
0.045 (1.14)
13
2.00 MAX
0.65
BSC
0.05 MIN
1.85
1.75
1.65
COPLANARITY
0.10
0.38
0.22 SEATING
PLANE
0.95
0.75
0.55
8°
4°
0°
0.25
0.09
COMPLIANT TO JEDEC STANDARDS MO-150AG
Figure 25. 24-Lead Plastic Dual In-Line Package [PDIP]
(N-24)
Dimensions shown in inches and (millimeters)
Figure 27. 24-Lead Shrink Small Outline Package [SSOP]
(RS-24)
Dimensions shown in millimeters
18.10 (0.7126)
17.70 (0.6969)
15.60 (0.6142)
15.20 (0.5984)
24
28
13
15
7.60 (0.2992)
7.40 (0.2913)
7.60 (0.2992)
7.40 (0.2913)
1
www.BDTIC.com/ADI
12
10.65 (0.4193)
10.00 (0.3937)
2.65 (0.1043)
2.35 (0.0925)
1
0.75 (0.0295)
× 45°
0.25 (0.0098)
0.30 (0.0118)
0.10 (0.0039)
COPLANARITY 1.27 (0.0500)
BSC
0.10
0.51 (0.020)
0.31 (0.012)
8°
SEATING
0.33 (0.0130) 0°
PLANE
0.20 (0.0079)
14
2.65 (0.1043)
2.35 (0.0925)
10.65 (0.4193)
10.00 (0.3937)
0.75 (0.0295)
× 45°
0.25 (0.0098)
0.30 (0.0118)
0.10 (0.0039)
1.27 (0.0500)
0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-013AD
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
COPLANARITY
0.10
8°
1.27 (0.0500) 0.51 (0.0201) SEATING 0.33 (0.0130) 0°
BSC
0.33 (0.0130) PLANE
0.20 (0.0079)
1.27 (0.0500)
0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-013AE
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
Figure 26. 24-Lead Standard Small Outline Package [SOIC]
Wide Body
(R-24)
Dimensions shown in millimeters and (inches)
Figure 28. 28-Lead Standard Small Outline Package [SOIC]
Wide Body
(R-28)
Dimensions shown in millimeters and (inches)
Rev. C | Page 13 of 16
ADM206–ADM211/ADM213
10.50
10.20
9.90
28
15
5.60
5.30
5.00
8.20
7.80
7.40
14
1
PIN 1
1.85
1.75
1.65
2.00 MAX
COPLANARITY
0.10
0.25
0.09
0.05 MIN
0.65
BSC
0.38
0.22
SEATING
PLANE
8°
4°
0°
0.95
0.75
0.55
COMPLIANT TO JEDEC STANDARDS MO-150AH
Figure 29. 28-Lead Shrink Small Outline Package [SSOP]
(RS-28)
Dimensions shown in millimeters
www.BDTIC.com/ADI
Rev. C | Page 14 of 16
ADM206–ADM211/ADM213
ORDERING GUIDE
Model
ADM206AN
ADM206AR
ADM206AR-REEL
ADM206ARS
ADM206ARS-REEL
ADM206ARZ1
ADM206ARZ-REEL1
ADM207AN
ADM207AR
ADM207AR-REEL
ADM207ARS
ADM207ARS-REEL
ADM208AN
ADM208AR
ADM208AR-REEL
ADM208ARS
ADM208ARS-REEL
ADM209AN
ADM209AR
ADM209AR-REEL
ADM209ARS
ADM209ARS-REEL
ADM211AR
ADM211AR-REEL
ADM211ARS
ADM211ARS-REEL
ADM211ARSZ1
ADM211ARSZ-REEL1
ADM213AR
ADM213AR-REEL
ADM213ARS
ADM213ARS-REEL
ADM213ARSZ1
ADM213ARSZ-REEL1
1
Temperature Range
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Package Description
24-lead DIP
24-lead SOIC
24-lead SOIC
24-lead SSOP
24-lead SSOP
24-lead SOIC
24-lead SOIC
24-lead DIP
24-lead SOIC
24-lead SOIC
24-lead SSOP
24-lead SSOP
24-lead DIP
24-lead SOIC
24-lead SOIC
24-lead SSOP
24-lead SSOP
24-lead DIP
24-lead SOIC
24-lead SOIC
24-lead SSOP
24-lead SSOP
28-lead SOIC
28-lead SOIC
28-lead SSOP
28-lead SSOP
28-lead SSOP
28-lead SSOP
28-lead SOIC
28-lead SOIC
28-lead SSOP
28-lead SSOP
28-lead SSOP
28-lead SSOP
www.BDTIC.com/ADI
Z = Pb-free part.
Rev. C | Page 15 of 16
Package Option
N-24
R-24
R-24
RS-24
RS-24
R-24
R-24
N-24
R-24
R-24
RS-24
RS-24
N-24
R-24
R-24
RS-24
RS-24
N-24
R-24
R-24
RS-24
RS-24
R-28
R-28
RS-28
RS-28
RS-28
RS-28
R-28
R-28
RS-28
RS-28
RS-28
RS-28
ADM206–ADM211/ADM213
NOTES
www.BDTIC.com/ADI
© 2004 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
C00067–0–1/05(C)
Rev. C | Page 16 of 16