Download MAX301/MAX303/MAX305 Precision, Dual, High-Speed Analog Switches General Description Features

19-0159; Rev 1; 2/07
Precision, Dual, High-Speed Analog Switches
Features
♦ Low On-Resistance < 22Ω Typical (35Ω Max)
♦ Guaranteed Matched On-Resistance Between
Channels < 2Ω
♦ Guaranteed Flat On-Resistance over Full Analog
Signal Range Δ3Ω Max
♦ Guaranteed Charge Injection < 15pC
♦ Guaranteed Off-Channel Leakage < 6nA at +85°C
♦ Single-Supply Operation (+10V to +30V)
Bipolar-Supply Operation (±4.5V to ±20V)
♦ TTL-/CMOS-Logic Compatible
♦ Rail-to-Rail Analog Signal Handling Capability
Ordering Information
Applications
Sample-and-Hold Circuits
Test Equipment
Heads-Up Displays
Guidance and Control
Systems
TEMP RANGE
PINPACKAGE
PKG
CODE
MAX301CPE
0°C to +70°C
16 Plastic DIP
P16-1
MAX301CSE
0°C to +70°C
16 Narrow SO
S16-2
MAX301CJE
0°C to +70°C
16 CERDIP
J16-3
MAX301C/D
0°C to +70°C
Dice*
MAX301EPE
-40°C to +85°C
MAX301ESE
MAX301EJE
PART
Military Radios
Communication Systems
Battery-Operated Systems
PBX, PABX
—
16 Plastic DIP
P16-1
-40°C to +85°C
16 Narrow SO
S16-2
-40°C to +85°C
16 CERDIP
J16-3
MAX301MJE
-55°C to +125°C
16 CERDIP**
J16-3
MAX301MLP
-55°C to +125°C
20LCC*
L20-3
Ordering Information continued on last page.
*Contact factory for dice specifications.
**Contact factory for package availability .
Pin Configurations/Block Diagrams/Truth Tables
TOP VIEW
COM1
1
16 NO1
N.C.
2
15 IN1
COM3
3
14 V-
13 GND
NO3
4
12 V L
NO4
5
6
11 V+
COM4
6
11 V+
N.C.
7
10 IN2
N.C.
7
10 IN2
COM2
8
COM2
8
COM1
1
16 NO1
N.C.
2
15 IN1
COM3
3
14 V-
13 GND
NC3
4
12 V L
NC4
5
6
11 V+
COM4
N.C.
7
10 IN2
COM2
8
COM1
1
16 NO1
N.C.
2
15 IN1
N.C.
3
14 V-
N.C.
4
N.C.
5
N.C.
MAX301
9
NO2
MAX301
SWITCH
0
1
LCC packages on last page.
9
NO2
13 GND
MAX305
OFF
ON
LOGIC
0
1
NO2
DIP/SO
MAX303
SWITCHES 1, 2 SWITCHES 3, 4
OFF
ON
12 V L
9
DIP/SO
DIP/SO
LOGIC
MAX303
ON
OFF
LOGIC
0
1
MAX305
SWITCH
OFF
ON
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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MAX301/MAX303/MAX305
General Description
The MAX301/MAX303/MAX305 are precision, dual, highspeed analog switches. The single-pole single-throw
(SPST) MAX301 and double-pole single-throw (DPST)
MAX305 dualswitches are normally open (NO). The single-pole double-throw (SPDT) MAX303 has two NO and
two normally closed (NC) poles. All three parts offer low
on resistance (less than 35Ω), guaranteed to match to
within 2Ω between channels and to remain flat over the
full analog signal range (Δ3max). They also offer low leakage (less than 250pA at +25°C and less than 6nA at
+85°C) and fast switching (turn-on time less than 150ns
and turn-off time less than 100ns).
The MAX301/MAX303/MAX305 are fabricated with
Maxim’s new improved silicon-gate process for high
system accuracy. Design improvements guarantee
extremely low charge injection (15pC) and low power
consumption (35µW). A 44V maximum breakdown voltage allows rail-to-rail analog signal capability.
These monolithic switches operate with a single positive
supply (+10V to +30V) or with split supplies (±4.5V
to ±20V) while retaining CMOS-logic input compatibility
and fast switching. CMOS inputs provide reduced input
loading.
MAX301/MAX303/MAX305
Precision, Dual, High-Speed Analog Switches
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+.......................................................................................44V
GND ...................................................................................25V
VL .................................................................(GND-0.3V) to (V+) +0.3V
NO_, NC_, IN_, COM_ ................(V- - 2V) to (V+ + 2V) or 30mA,
..................................................................whichever occurs first
Continuous Current, COM_, NO_, NC_...............................30mA
Peak Current, COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle max) ..........................100mA
Continuous Power Dissipation (TA = +70°C) (Note 2)
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C) .....842mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) .......696mW
16-Pin CERDIP (derate 10.00mW/°C above +70°C)..........800mW
20-Pin LCC (derate 9.09mW/°C above +70°C) ..................727mW
Operating Temperature Ranges:
MAX30_C_ _ .......................................................0°C to +70°C
MAX30_E_ _.....................................................-40°C to +85°C
MAX30_M_ _ ..................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Signals on NO_, NC_, or COM_ beyond V+ or V- are clamped by internal diodes. Limit forward current to maximum current rating.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V+ = 15V, V- = -15V, VL = +5V, GND = 0V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
TEMP
MIN
TYP MAX
UNITS
RANGE
(Note 2)
SWITCH
Analog-Signal Range
On-Resistance
VANA
RON
On-Resistance Match
Between Channels (Note 4)
RON
On-Resistance Flatness
(Note 4)
RON
NC or NO
Off-Leakage Current
COM Off-Leakage Current
COM OnLeakage Current
2
NC_(OFF)
or
NO_(OFF)
COMOFF
COMON
(Note 3)
I(NC or NO) = -10mA,
VCOM_ = ±10V
VINH = 2.4V, VINL = 0.8V
I(NC or NO) = -10mA,
VCOM_ = ±10V
V+ = 15V, V- = -15V
IS = -10mA
VCOM_ = ±5V
V+ = 15V, V- = -15V
VCOM_ = +15.5V,
VNC_ or VNO_ = ±15.5V,
V+ = 16.5V, V- = -16.5V
VTA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
VCOM_ = ±15.5V,
VNC_ or VNO_ = +15.5V,
TA = +25°C
V+ = 16.5V, V- = -16.5V
TA = TMIN to TMAX
VCOM_ = ±15.5V,
VNC_ or VNO_ = ±15.5V,
V+ = 16.5V, V- = -16.5V
TA = +25°C
TA = TMIN to TMAX
V+
C, E
20
35
M
20
30
C, E
55
M
0.5
C, E, M
2
3
C, E, M
3
C, E, M
5
C, E
-0.50
-0.01
0.50
M
-0.25
-0.01
0.25
M
-6
6
-20
-0.50
-0.01
0.50
M
-0.25
-0.01
0.25
-6
6
M
-20
C, E
-1.0
-0.04
1.0
M
-0.4
-0.04
0.4
C, E
-20
20
-40.0
40.0
M
Ω
Ω
nA
20
C, E
C, E
Ω
45
C, E, M
C, E
V
nA
20
________________________________________________________________________________________________
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nA
Precision, Dual, High-Speed Analog Switches
(V+ = 15V, V- = -15V, VL = +5V, GND = 0V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP MAX
UNITS
(Note 2)
INPUT
Input Current with
Input-Voltage High
IINH
Input Current with
Input-Voltage Low
IINH
VIN_ = 2.4V, all others = 0.8V
-1.000 0.005
1.000
µA
VIN_ = 0.8V, all others = 2.4V
-1.000 0.005
1.000
µA
±20
V
SUPPLY
Power-Supply Range
±4.5
Positive Supply Current
I+
Negative Supply Current
I-
Logic-Supply Current
IL
Ground Current
IGND
All channels on or off,
VIN = 0V or 5V,
V+ = 16.5V, V- = -16.5V
All channels on or off,
VIN = 0V or 5V,
V+ = 16.5V, V- = -16.5V
All channels on or off,
VIN = 0V or 5V,
V+ = 16.5V, V- = -16.5V
All channels on or off,
VIN = 0V or 5V,
V+ = 16.5V, V- = -16.5V
TA = +25°C
-1.00
TA = TMIN to TMAX
-5.00
TA = +25°C
-1.00
TA = TMIN to TMAX
-5.00
TA = +25°C
-1.00
TA = TMIN to TMAX
-5.00
TA = +25°C
-1.00
TA = TMIN to TMAX
-5.00
0.01
1.00
5.00
-0.01
1.00
5.00
0.01
1.00
5.00
-0.01
1.00
5.00
µA
µA
µA
µA
DYNAMIC
Turn-On Time
tON
Figure1
TA = +25°C
100
150
ns
Turn-Off Time
tOFF
Figure 1
TA = +25°C
60
100
ns
Break-Before-Make
Time Delay (Note 3)
tD
MAX303 only,
Figure 2
TA = +25°C
Charge Injection
(Note 3)
Q
CL = 10nF, VGEN = 0V,
RGEN = 0Ω,
Figure 3
TA = +25°C
10
OIRR
RL = 100Ω, CL = 5pF,
f = 1MHz, Figure 4
TA = +25°C
72
dB
RL = 50Ω, CL = 5pF,
f = 1MHz, Figure 5
TA = +25°C
90
dB
Off-Isolation (Note 5)
Crosstalk (Note 6)
10
20
ns
15
pC
COF
f = 1MHz, Figure 6
TA = +25°C
12
pF
COM Off-Capacitance
CCOM(OFF
f = 1MHz, Figure 6
TA = +25°C
12
pF
Channel-On Capacitance
CCOM(ON)
f = 1MHz, Figure 7
Off-Capacitance
TA = +25°C
39
pF
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used on
this data sheet.
Note 3: Guaranteed by design.
Note 4: ∆RON = ∆RONMAX - ∆RONMIN. On resistance match between channels and flatness are guaranteed only with
specified voltages.
Note 5: See Figure 4. Off isolation = 20log10 VCOM/VNC orVNO, VCOM = output, VNC or VNO = input to off switch.
Note 6: Between any two switches. See Figure 5.
_________________________________________________________________________________________________ 3
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MAX301/MAX303/MAX305
ELECTRICAL CHARACTERISTICS (continued)
________________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted).
30
A
B
25
20
C
20
15
MAX301-3
100
RON (Ω)
30
120
TA = +125°C
TA = +85°C
TA = +25°C
25
35
140
MAX301-2
35
RON (Ω)
V+ = 5V
80
60
TA = -55°C
D
15
V+ = 10V
40
10
V+ = 15V
V+ = 15V, V- = -15V
10
5
-10
10
0
-10
-20
20
0
10
0
20
5
15
10
VCOM (V)
VCOM (V)
VCOM (V)
ON-RESISTANCE vs. VCOM
AND V- = OV
OFF-LEAKAGE CURRENTS vs.
TEMPERATURE
ON-LEAKAGE CURRENTS vs.
TEMPERATURE
100
MAX301-4
70
60
V+ = 16.5V
V- = -16.5V
VCOM = ±15V
VNC OR VNO = ±15V
10
OFF LEAKAGE (nA)
TA = +125°C
50
TA = +85°C
40
TA = +25°C
30
20
100
V+ = 16.5V
V- = -16.5V
VCOM = ±15V
VNC OR VNO = ±15V
10
1
.1
.01
20
MAX301-6
-20
V+ = 20V
20
5
MAX301-5
RON (Ω)
40
V+ = 5V, V- = -5V
V+ = 10V, V- = -10V
V+ = 15V, V- = -15V
V+ = 20V, V- = -20V
ON LEAKAGE (nA)
45
A:
B:
C:
D:
MAX301-1
50
ON-RESISTANCE vs. VCOM
WITH V- = 0V
ON-RESISTANCE vs. VCOM
AND TEMPERATURE
ON-RESISTANCE vs. VCOM AND
POWER-SUPPLY VOLTAGE
RON (Ω)
1
.1
.01
.001
.001
V+ = 12V, V- = 0V
.0001
.0001
10
0
5
15
10
-55
20
VANA (V)
125
25
-55
SUPPLY CURRENT vs.
TEMPERATURE
10
20
1
I+, I-, IL (µA)
40
0
-20
-40
MAX301-8
100
MAX301-7
60
125
25
TEMPERATURE (°C)
TEMPERATURE (°C)
CHARGE INJECTION vs.
ANALOG VOLTAGE
Q (pC)
MAX301/MAX303/MAX305
Precision, Dual, High-Speed Analog Switches
I+ AT V+ = 16.5V
.1
I- AT V- = -16.5V
.01
IL AT VL = 5V
.001
V+ = 15V, V- = -15V
-60
.0001
-20
-10
0
VCOM (V)
4
10
20
-55
25
125
TEMPERATURE (°C)
_______________________________________________________________________________________
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Precision, Dual, High-Speed Analog Switches
MAX301 PIN
DIP/SO
LCC
1, 8
2, 10
NAME
COM1,
COM2
Drain (Analog Signal)
10, 15
NC1,
NC2
IN2, IN1
11
14
V+
Positive Supply-Voltage
Input—connected to
substrate
12
15
VL
Logic Supply-Voltage Input
13
17
GND
14
18
V-
Ground
Negative Supply Voltage
Input
9, 16
MAX303 PIN
N.C.
NAME
Not internally connected
Source (Analog Signal)
Digital Logic Inputs
FUNCTION
DIP/SO
LCC
1, 8, 3, 6
2, 4, 8, 10
1, 3, 6, 9,
11, 16
COM_
N.C.
Not internally connected
11
14
V+
Positive Supply-Voltage
Input—connected to
substrate
12
15
VL
Logic Supply-Voltage Input
13
17
GND
Ground
Negative Supply Voltage
Input
Digital Logic Inputs
2-7
14
18
V-
15, 10
19, 13
5, 7, 12,
20
IN1, IN2
NC_,
NO_
16, 9, 5, 4
MAX305 PIN
NAME
Drain (Analog Signal)
1, 8, 3, 6
2, 4, 8, 10
1, 3, 6, 9,
11, 16
COM_
N.C.
Not internally connected
11
14
V+
Positive Supply-Voltage
Input—connected to
substrate
12
15
VL
Logic Supply-Voltage Input
13
17
GND
14
18
V-
15, 10
19, 13
5, 7, 12,
20
IN1, IN2
NO_
Logic Inputs
The MAX301/MAX303/MAX305 operate with a single positive supply or with bipolar supplies. The devices maintain
TTL compatibility with supplies anywhere in the ±4.5V to
±20V range as long as VL = +5V. If VL is connected to V+
or another supply at voltages other than +5V, the devices
will operate at CMOS-logic level inputs.
Overvoltage Protection
Proper power-supply sequencing is recommended for all
CMOS devices. It is important not to exceed the absolute
maximum ratings because stresses beyond the listed ratings may cause permanent damage to the devices.
Always sequence V+ on first, followed by VL, V-, and
logic inputs. If power-supply sequencing is not possible,
add two small signal diodes in series with the supply pins
for overvoltage protection (Figure 1). Adding diodes
reduces the analog signal range to 1V below V+ and 1V
below V-, but low switch resistance and low leakage characteristics are unaffected. Device operation is
unchanged, and the difference between V+ to V- should
not exceed +44V.
FUNCTION
LCC
16, 9, 5, 4
The MAX301/MAX303/MAX305 switches operate with
±4.5V to ±20V bipolar supplies and a +10V to +30V single supply. In either case, analog signals ranging from V+
to V- can be switched. The Typical Operating
Characteristics graphs show the typical on-resistance
variation with analog signal and supply voltage. The usual
on-resistance temperature coefficent is 0.5%/°C (typ).
Source (Analog Signal)
DIP/SO
2-7
Operation with Supply Voltages
Other than ±15V
FUNCTION
1, 3-9, 11,
16
5, 7, 12,
20
13, 19
2-7
__________Applications Information
V+
Drain (Analog Signal)
NO_
COM_
Vg
Ground
Negative Supply Voltage
Digital Logic Inputs
Source (Analog Signal)
V-
Figure 1. Overvoltage Protection Using Blocking Diodes
________________________________________________________________________________________
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5
MAX301/MAX303/MAX305
____________________Pin Descriptions
MAX301/MAX303/MAX305
Precision, Dual, High-Speed Analog Switches
+5V
+3V
LOGIC
INPUT
tOFF
VCOM
SWITCH
OUTPUT
VO
VCOM = +10V
for tON
0.9VO
VCOM = -10V
for tOFF
0V
tON
SWITCH
INPUT
-VANA
VL
SWITCH
INPUT
V+
NC
OR NO
COM
VO
IN1
LOGIC
INPUT
GND
V-
0V
-15V
V-
0.9VO
VO
RL = 1000Ω
CL = 35pF
V+
0V
SWITCH
INPUT
+15V
tr < 20ns
tf < 20ns
50%
REPEAT TEST FOR EACH SWITCH
LOGIC INPUT WAVEFORM IS INVERTED FOR
SWITCHES THAT HAVE THE OPPOSITE LOGIC
SENSE CONTROL
RL
RL = RON
VO = VCOM
FOR LOAD CONDITIONS, SEE Electrical Characteristics.
CL INCLUDES FIXTURE AND STRAY CAPACITANCE
Figure 2. Switching-Time Test Circuit
+5V
LOGIC
INPUT
+3V
VCOM_ = +10V
50%
VL
0V
V+
NO
VO1
COM_
VCOM
VO2
NC_
VO1
IN_
VO2
0V
CL1
RL2
LOGIC
INPUT
0.9VO
tD
RL1
COM_
0.9VO
0V
SWITCH
OUTPUT VCOM
SWITCH
OUTPUT
+15V
VCOM_ = +10V
GND
V-
0V
-15V
CL2
RL = 1000Ω
CL = 35pF
tD
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
LOGIC 0 INPUT.
Figure 3. Break-Before-Make Test Circuit
RGEN
+5V
+15V
VL
V+
COM
VGEN
∆VO
NC OR NO
VO
CL
GND
V-
0V
-15V
10nF
VO
INX
ON
OFF
ON
Q = (∆VO)(CL)
Figure 4. Charge-Injection Test Circuit
6
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Precision, Dual, High-Speed Analog Switches
+15V
+5V
V+
VL
SIGNAL
GENERATOR
MAX301/MAX303/MAX305
C
C
VCOM
0V, 2.4V
IN_
ANALYZER
CH A
CH B
FREQUENCY
TESTED
SIGNAL
GENERATOR
1 MHz
AUTOMATIC
SYNTHESIZER
NC OR NO
GND
ANALYZER
TRACKING
SPECTRUM
ANALYZER
C
V-
RL
OFF ISOLATION = 20LOG
-15V
100Ω
VCOM
VNC OR VNO
C = 5pF
Figure 5. Off Isolation
+15V
C
+5V
C
V+
VL
SIGNAL
GENERATOR
V
V+
50Ω
COM
NC OR NO
IN2
0V, 2.4V
0V, 2.4V
IN_
ANALYZER
CH A
CH B
NC OR NO
FREQUENCY
TESTED
SIGNAL
GENERATOR
1 MHz
AUTOMATIC
SYNTHESIZER
COM
GND
ANALYZER
TRACKING
SPECTRUM
ANALYZER
C
V-
RL
-15V
100Ω
C = 5pF
Figure 6. Crosstalk Test Circuit
+15V
C
+5V
C
V+
V+
COM
C
VL
+15V
+5V
V+
VL
C
COM_
IN_
0V, 2.4V
CAPACITANCE
METER
IN_
CAPACITANCE
METER
0V, 2.4V
NC OR NO
GND
V-
C
GND
-15V
Figure 7. Channel On-Capacitance
V-
C
-15V
Figure 8. Channel Off-Capacitance
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7
PART
TEMP RANGE
PINPACKAGE
PKG
CODE
Pin Configurations (continued)
TOP VIEW
2 COM1
Ordering Information (continued)
S16-2
MAX303CJE
0°C to +70°C
16 CERDIP
J16-3
MAX303C/D
0°C to +70°C
Dice*
—
N.C. 4
MAX303EPE
-40°C to +85°C
16 Plastic DIP
P16-1
N.C. 5
MAX303ESE
-40°C to +85°C
16 Narrow SO
S16-2
N.C. 6
MAX303EJE
-40°C to +85°C
16 CERDIP
J16-3
N.C. 7
15 VL
MAX303MJE
-55°C to +125°C
16 CERDIP
J16-3
N.C. 8
14 V+
MAX303MLP
-55°C to +125°C
20LCC*
L20-3
J16-3
MAX305MLP
-55°C to +125°C
20LCC*
L20-3
18 V-
COM3 4
NC3 5
17 GND
N.C. 6
16 N.C.
MAX303
NC4 7
15 VL
COM4 8
14 V+
9
* Dice are tested at TA = +25°C only.
** Contact factory for availability.
IN2 13
16 CERDIP
19 IN1
-55°C to +125°C
IN2 13
J16-3
MAX305MJE
19 IN1
S16-2
16 CERDIP
NC2 12
16 Narrow SO
-40°C to +85°C
20 NO1
-40°C to +85°C
NO2 12
MAX305EJE
P16-1
20 NO1
MAX305ESE
—
16 Plastic DIP
N.C. 11
-40°C to +85°C
1 N.C.
MAX305EPE
N.C. 11
Dice*
1 N.C.
0°C to +70°C
N.C. 9
J16-3
MAX305C/D
COM2 10
16 CERDIP
2 COM1
0°C to +70°C
3 N.C.
S16-2
MAX305CJE
N.C.
P16-1
16 Narrow SO
16 N.C.
COM2 10
16 Plastic DIP
0°C to +70°C
17 GND
MAX301
2 COM1
0°C to +70°C
MAX305CSE
18 V-
3 N.C.
MAX305CPE
19 IN1
P16-1
16 Narrow SO
20 NC1
16 Plastic DIP
1 N.C.
0°C to +70°C
0°C to +70°C
3 N.C.
MAX303CPE
MAX303CSE
Revision History
Pages changed at Rev 1: 1, 7, 8
COM3 4
18 V-
NO3 5
17 GND
N.C. 6
16 N.C.
MAX305
IN2 13
N.C.
NO2 12
14 V+
N.C. 11
15 VL
COM4 8
9
NO4 7
COM2 10
MAX301/MAX303/MAX305
Precision, Dual, High-Speed Analog Switches
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implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
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