Download 汉王PDF转换RTF文档

19-1599; Rev 3; 8/01
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
General Description
M
Features
The MAX4400–MAX4403 low-cost, general-purpose op
A
®
escent current, and operate from a single +2.5V to +5.5V
supply. For additional power conservation, the MAX4401
offers a low-power shutdown mode that reduces supply
current to 1µA (max) and puts the amplifier’s output in a
high-impedance state. These devices deliver ±1.4mA of
output current and are unity-gain stable with a 1MHz gainbandwidth product driving capacitive loads up to 400pF.
The MAX4400–MAX4403 are specified to +125°C, making
them suitable for use in a variety of harsh environments,
such as automotive applications.
The MAX4400 single amplifier is available in ultra-small
5-pin SC70 and space-saving 5-pin SOT23 packages.
The single MAX4401 includes the shutdown feature and is
available in a 6-pin SC70. The MAX4402 is a dual amplifier
av ailable in 8-p in S OT23 and SO packages . The
MAX4403 quad amplifier is packaged in a 14-pin TSSOP
or SO.
X
4
4
0
0
o 320µA Quiescent Current per Amplifier
o Available in Space-Saving Packages
5-Pin SC70 (MAX4400)
6-Pin SC70 (MAX4401)
8-Pin SOT23 (MAX4402)
o 110dB A
with 2kLoad
M
A
X
o 0.015% THD with 2kLoad
4
4
0
3
o 1.4mA of Sink and Source Load Current
LOAD
o Ground-Sensing Inputs
Applications
Ordering Information
Single-Supply, Zero-Crossing Detectors
PART
Instruments and Terminals
Portable Communications
MAX4400AXK-T
MAX4400AUK-T
Electronic Ignition Modules
Infrared Receivers
Sensor Signal Detection
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PART
TOP
5 SC70-5
5 SOT23-5
AAG
ADNP
MAX4401AXT-T -40°C to +125°C 6 SC70-6
MAX4402AKA-T -40°C to +125°C 8 SOT23-8
AAB
AADI
—
MAX4402AUA
-40°C to +125°C
8 µMAX
MAX4402ASA
MAX4403AUD
-40°C to +125°C
-40°C to +125°C
8 SO
14 TSSOP
—
—
MAX4403ASD
-40°C to +125°C
14 SO
—
Selector Guide
NO. OF AMPLIFIERS
PER PACKAGE
PIN-
Pin Configurations
SHUTDOWN
MODE
MAX4400
1
No
MAX4401
1
Yes
MAX4402
2
No
MAX4403
4
No
MAX440
0
IN+ 1
5 V DD
IN+ 1
6 VDD
VSS 2
VSS 2
5 SHDN
IN- 3
4 OUT IN- 3
SC70-5/SOT23-5
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX4401
–
4 OUT
SC70-6
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Rail-to-Rail Op Amps with Shutdown
ABSOLUTE MAXIMUM RATINGS
3
0
4 Output Short-Circuit Duration
8-Pin SO (derate 5.88mW/°C above +70°C) ............... 471mW
4
X
5-Pin SC70 (derate 2.5mW/°C above +70°C)............. 200mW
Operating Temperature Range .........................-40°C to +125°C
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
Storage Temperature Range .............................-65°C to +150°C
A
6-Pin SC70 (derate 2.27mW/°C above +70°C) ............181mW
Lead Temperature (soldering, 10s) .................................+300°C
M Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
–
Single/Dual/Quad, Low-Cost, Single-Supply,
0 absolute maximum rating conditions for extended periods may affect device reliability.
0 ELECTRICAL
4 Power-Supply
CHARACTERISTICS
(V
= +5V, V
= 0,(V
V to= V
0, V) .........................-0.3V
= V /2, R =  to
connected
to V 8-Pin
/2, SHDN
V
(MAX4401
T = +25°C,
unless
Voltage
+6V
SOT23=(derate
7.52mW/°C only),
above +70°C)
..........602mW
All Othernoted.)
Pins ...................................(V
4 otherwise
X
OUT Shorted
to V or V
PARAMETER
- 0.3V) to (V
+ 0.3V)
...................................
SYMBOL Continuous
A Continuous Power Dissipation (T = +70°C)
DD
M
Supply Current per Amplifier
V
I
Supply Current in Shutdown
ISHDN
Input Offset Voltage
V
Input Bias Current
IB
8-Pin µMAX (derate 4.5mW/°C above +70°C) ............ 362mW
14-Pin TSSOP (derate 8.33mW/°C MIN
above +70°C)
...... 667mW
CONDITIONS
TYP
MAX
14-Pin SO (derate 8.33mW/°C above +70°C)............. 667mW
= 2.5V
320
VDD = 5.0V
410
SHDN = VSS (Note 1)
MAX4400/MAX4401
0.00002
±0.8
MAX4402/MAX4403
±1.0
(Note 2)
±0.1
Input Offset Current
IOS
(Note 2)
±0.1
Input Resistance
Input Common-Mode Voltage
RIN
Differential or common mode
V
Inferred from CMRR test
UNITS
µA
700
1
µA
±4.5
mV
±5.5
±100
pA
±100
pA
1000
G
V
V
- 1.4
V
Range
Common-Mode Rejection Ratio
CMRR
VSS VCM VDD - 1.4V
Power-Supply Rejection Ratio
PSRR
2.5V VDD 5.5V
VOL
SS
OUT
Output Voltage High
V
Output Voltage Low
|V
V
|V
DD
-V
-V
|
68
84
78
R = 100k120
dB
100
dB
RL = 2k90
110
R = 100k3
mV
RL = 2k55
R = 100k2
200
mV
|
L
Sourcing
Output Short-Circuit Current
Shutdown Mode Output
Sinking
Device in shutdown mode, SHDN = V
I
Leakage
12
mA
30
,
±1.0
µA
VSS < VOUT < VCC (Note 1)
✕
IL
IH
SHDN Input Current
Gain-Bandwidth Product
Phase Margin
IIL, IIH
GBW
DD
✕
DD
SHDN = VDD or VSS (Note 1)
M
Gain Margin
Slew Rate
2
±0.001
800
70
20
SR
_______________________________________________________________________________________
1
±500
nA
kHz
degrees
dB
V/µs
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
M
ELECTRICAL CHARACTERISTICS (continued)
(V
= +5V, V
= 0, V
= 0, V
= V
/2, R =  connected to V
/2, SHDN = V
(MAX4401 only), T
= +25°C, unless
A
otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Noise Density
en
f = 10kHz
36
nV/ Hz
Input Current Noise Density
in
f = 10kHz
1
fA/ Hz
400
pF
0.4
µs
6
µs
5
µs
2.5
pF
Capacitive-Load Stability
CLOAD
Shutdown Delay Time
tSHDN
Enable Delay Time
tEN
Power-On Time
tON
Input Capacitance
CIN
Total Harmonic Distortion
Total Harmonic Distortion
Settling Time to 0.1%
THD
tS
AV = +1V/V
(Note 1)
(Note 1)
f = 10kHz, VOUT =
2Vp-p, AV = +1V/V
RL = 100k
0.009
RL = 2k
0.015
M
A
X
4
4
0
3
%
7
VOUT = 2V step
X
4
4
0
0
µs
ELECTRICAL CHARACTERISTICS
(VDD = +5V, VSS = 0, VCM = 0, VOUT = VDD/2, RL =  connected to VDD/2, TA = -40°C to +125°C, unless otherwise noted.) (Note 3)
PARAMETER
SYMBOL
Supply Voltage Range
VDD
Supply Current per Amplifier
IDD
Input Offset Voltage
VOS
Input Offset Voltage Drift
Input Bias Current
CONDITIONS
Inferred from PSRR test
MIN
TYP
2.5
MAX
5.5
V
800
µA
MAX4400/MAX4401
±6.5
MAX4402/MAX4403
±8.0
±1
TCVOS
UNITS
mV
µV/°C
IB
(Note 2)
±100
pA
Input Offset Current
IOS
(Note 2)
±100
pA
Input Common-Mode Voltage
Range
VCM
Inferred from CMRR test
VSS
VSS VCM VDD - 1.5V
65
VSS VCM VDD - 1.0V TA = -20°C to +125°C
50
2.5V VCC 5.5V
74
Common-Mode Rejection Ratio
CMRR
Power-Supply Rejection Ratio
PSRR
Shutdown Mode Output
Leakage
IOUTSHDN
Device in shutdown
mode, SHDN = VSS,
VSS < VOUT < VDD
(Note 1)
SHDN Logic Low
VIL
(Note 1)
SHDN Logic High
VIH
(Note 1)
VDD - 1.5
V
–
dB
dB
TA = -40°C to +85°C
±1.0
TA = +85°C to +125°C
±5.0
µA
0.3 ✕ VDD
V
V
0.7 ✕ VDD
SHDN Input Current
IIL, IIH
SHDN = VDD or VSS (Notes 1, 2)
±1000
Large-Signal Voltage Gain
AVOL
VSS + 0.3V VOUT VDD - 0.3V, RL = 2k
Output Voltage High
VOH
Specified as |VDD - VOH|, RL = 2k
250
mV
Output Voltage Low
VOL
Specified as |VSS - VOL|, RL = 2k
100
mV
85
nA
dB
Note 1: Shutdown mode is only available in the 6-pin SC70 single op amp (MAX4401).
Note 2: Guaranteed by design.
Note 3: Specifications are 100% tested at TA = +25°C (exceptions noted). All temperature limits are guaranteed by design.
_______________________________________________________________________________________
3
Rail-to-Rail Op Amps with Shutdown
Typical Operating Characteristics
3
(V
DD
=
+5V,
V
SS
=
0,
V
CM
=
V
DD
/2,
V
SHDN
=
5V,
R
L
=

connected
to
V
DD
/2,
TA = +25°C, unless otherwise noted.)
0
4
GAIN AND PHASE
GAIN AND PHASE
POWER-SUPPLY REJECTION
RATIO
4
X

A
Single/Dual/Quad, Low-Cost, Single-Supply,
r
M
–
0
0
4
4
X
S
g
d
E
0
-20
-30
d
)S
-70
-120
-140
-160
-180
A
M
0
E -20
gd
sA
eeH -40
P
/
B -80
N-100
G
AV = +1000V/V
CL
1
10
100 1k 10k 100k 1M
FREQUENCY (Hz)
10
0t403
oM
40
10M
A
M
)

E
10
C
N
D
P
M 1
T
P
4o
04
X
0.01
0.001
100
1k
10k
100k
5
ct
0
4
400
A

T
N
P
R
RU
C 35
Y0
P
30 -40 -20
0
1
M
0
FREQUENCY (Hz)
20
40
60
A
(T100
N
P
R
RU
C
Y 10
P
6
ct
0
4
1
-40 -20
0
A
40 60
80 100 120
OUTPUT VOLTAGE SWING
HIGH
vs. TEMPERATURE
70
M
1000
20
TEMPERATURE (C)
INPUT OFFSET
VOLTAGE
vs. TEMPERATURE
1500
A
1k
80 100 120
60
RL = 2kto VDD/2
A
50
1k
)A
(K
IE
7c
t0
4
10
8
ct
0
4
A
V
-500
0.1
-40 -20
0
20
40
60
80 100 120
TEMPERATURE (C)
)

-1500 -40
S
0
40
V
9
ct
0
4
20
-100
0500
4
VSS
10k
TEMPERATURE (C)
MAX4401
OUTPUT LEAKAGE
CURRENT
vs. TEMPERATURE
V
VSHDN = VSS
OUT = DD/2V
SHDN=
)
1M
V
A
) 450
TO0.1
1M
100k
1k
10k
100k
FREQUENCY (Hz)
c
4X
M
MAX4401
SHUTDOWN SUPPLY
CURRENT
vs. TEMPERATURE
SUPPLY CURRENT vs.
500 TEMPERATURE
100
10
100
N-100
G
OUTPUT
IMPEDANCE
vs. FREQUENCY
1000
-120
vs. FREQUENCYL(C = 400pF)
-90
-140
80
2
-160
=
+1000V/V
t0
AV
4 -110
CL
-180
A
-40
M (R-50
H
1
10
100
1k
10k
100k
1M
10M
10
/se-6020
B
FREQUENCY (Hz)
d
10
-20
0
20
40
60
80 100 12
0
TEMPERATURE (C)
)
m 0
H
V -40
D 30
-20
_______________________________________________________________________________________
0
20
40
60 80
100 120
TEMPERATURE (C)
Rail-to-Rail Op Amps with Shutdown
M
Typical Operating Characteristics (continued)
A
Single/Dual/Quad, Low-Cost, Single-Supply,
(VDD = +5V, VSS = 0, VCM = VDD/2, VSHDN = 5V, RL =  connected to VDD/2, TA = +25°C, unless otherwise noted.)
OUTPUT VOLTAGE SWING LOW
LARGE-SIGNAL GAIN
0
to
50
R = 2kto /2
V
L
COMMON-MODE REJECTION RATIO
1
04M
X
DD
40
)
1
to
1
M
-60
0
4
X
m 30
E
V
L
V 20
-80
L
120
100
0
4
4
0
B
(N 20
A
-100
-40 -20
–A
X
40
B
(R
R
20 40 60 80 100 120
TEMPERATURE (°C)
0
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (C)
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VO (V)
3
UT
MINIMUM OPERATING VOLTAGE
LARGE-SIGNAL
GAIN
vs. TEMPERATURE
140
135
TOTAL HARMONIC
DISTORTION
vs. FREQUENCY
vs. TEMPERATURE
3.0
RL =
2k
A
3c
t
04
130
)B125
dIN120
G
A
115
0.1
A
4
ct
0
4
2.5
)
I 2.0
(N
V
M
A
AV = +1
0.01
)
D
%
TH
5
ct
0
4
R = 2k
V = 2Vp-p
0.001
110
1.5
105
0.000
1
10
100
-40 -20
0
20
40
60
80
100 120
1.0
-40 -20
TEMPERATURE (°C)
RL = 100k
VOUT = 2Vp-p
AV = +1
20
40
60
80 100 120
10
A
)
%
D
TH
1
TOTAL HARMONIC
DISTORTION
PLUS NOISE vs. INPUT
AMPLITUDE
A
RL = 2k
f = 10kHz
BW = 20kHz
1k
10
k
FREQUENCY (Hz)
100k
TOTAL HARMONIC
DISTORTION
PLUS NOISE vs. INPUT
AMPLITUDE
10
A
RL = 100k
f = 10kHz
BW = 20kHz
1
%
%
T0.0
6c
t0
4
0.01
1
7
ct
0
4
)0.001
0.000
1
10
100
TEMPERATURE (°C)
TOTAL HARMONIC
DISTORTION
vs. FREQUENCY
0.01
0
8
ct
0
4
0.001
)
0.0001
100
1k
10
k
FREQUENCY
(Hz)
100k
( 0.1 0
0.0001
N
+
D
0.5
1.0
1.5
VIN
(Vp-p)
2.0
2.5
3.
0
( 0.1
N
+
D
H
0
0
M
80
-90
0
vs. OUTPUT
VOLTAGE
)
G60
C
M
10
to
1
0
M
4
X
R = 2k
-70
)
2
140
X
4
4
0
0.5
1.0
1.5
VIN
(Vp-p)
2.0
2.5
3.0
_______________________________________________________________________________________
5
Rail-to-Rail Op Amps with Shutdown
Typical Operating Characteristics (continued)
3
(V
DD
=
+5V,
V
SS
=
0,
V
CM
=
V
DD
/2,
V
SHDN
=
5V,
R
L =  connected to VDD/2, TA = +25°C, unless otherwise noted.)
0
4
NONINVERTING SMALL-SIGNAL
4
X
A
A
A

Single/Dual/Quad, Low-Cost, Single-Supply,
F
M
–
0
0
4
UNSTABLE
REGION
1000
50mV/div
STABLE
REGION
A
A
pC 500
D
O
E2000
V
T
0 0
C
A
M
1500
4
X
OUT
CAPACITIVE-LOAD STABILITY
RESPONSE
9
A = +1
1k A
10k
RESISTIVE LOAD ()
TRANSIENT
co
0
c
4
100 4
o
k 0
4
RL = 2k
2s/div
IN
NONINVERTING
LARGE-SIGNAL
TRANSIENT
RESPONSE
30
c
RL =
2k
A
V=
+1V/V
PERCENT
OVERSHOOT
vs. CAPACITIVE
LOAD
c
NEGATIVE
OVERSHOOT
M
o
0
4
XIN
25
M
20
1
2V/div
15
O 10
OUT
2
5
POSITIVE
OVERSHOOT
0
10s/di
v
)%
T
O
H
S
E
SUPPLY CURRENT vs. SUPPLY
450 VOLTAGE
400
130
0
A
VOUT = VDD/2
350
)
 300
T
N 250
R
U
C 200
Y
P
PS 150
4
ct
100
50
100
20
0
300
CLOAD
(pF)
400
500
o
600
0
4
X
MAX4402/MAX4403
CHANNEL-TO-CHANNEL
ISOLATION
vs. FREQUENCY
0
A
5
ct
B
d 120
N
O
T
A
)S
O
L100
N
90
H
C
O 80
EC 60
N
A
50
0
0
6
0
1
2
3
4
5
SUPPLY VOLTAGE (V)
6
0.01
4
0.1
1
10
100
FREQUENCY (kHz)
_______________________________________________________________________________________
1000
4
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
M
Pin Description
A
PIN
NAME
X
4
4
0
0
FUNCTION
MAX4400
MAX4401
MAX4402
MAX4403
1
1
—
—
IN+
—
—
3
3
INA+
Noninverting Amplifier Input A
—
—
5
5
INB+
Noninverting Amplifier Input B
—
—
—
10
INC+
Noninverting Amplifier Input C
—
—
—
12
IND+
Noninverting Amplifier Input D
2
2
4
11
VSS
Negative Supply. Connect to ground for singlesupply operation
3
3
—
—
IN-
Inverting Amplifier Input
—
—
2
2
INA-
Inverting Amplifier Input A
—
—
6
6
INB-
Inverting Amplifier Input B
—
—
—
9
INC-
Inverting Amplifier Input C
—
—
—
13
IND-
Inverting Amplifier Input D
4
4
—
—
OUT
Amplifier Output
—
—
1
1
OUTA
Amplifier Output A
—
—
7
7
OUTB
Amplifier Output B
—
—
—
8
OUTC
Amplifier Output C
—
—
—
14
OUTD
Amplifier Output D
5
6
8
4
VDD
—
5
—
—
SHDN
Noninverting Amplifier Input
M
A
X
4
4
–0
3
Positive Supply
Active-Low Shutdown Input. Connect to VDD for
normal operation. Do not leave floating.
Detailed Description
Rail-to-Rail Output Stage
The MAX4400–MAX4403 can drive a 2kload and still
typically swing within 55mV of the supply rails. Figure 1
shows the output voltage swing of the MAX4400 configured with AV = +10V/V.
Driving Capacitive Loads
Driving a capacitive load can cause instability in many
op amps, especially those with low quiescent current.
The MAX4400–MAX4403 are unity-gain stable for a
rang e of capacitive loads to above 400pF. Figure 2
shows the response of the MAX4400 with an excessive
capacitive load. Adding a series resistor between the
output and the load capacitor (Figure 3) improves the
1V/div
100µs/div
Figure 1. Rail-to-Rail Output Operation
_______________________________________________________________________________________
7
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
3
0
4
4
X
IN
RISO
50mV/div
A
M
–
0
0
4
4
CL
MAX440
0
MAX440
1
MAX440
2
MAX440
3
OUT
2s/div
Figure 2. Small-Signal Transient Response with Excessive
Figure 3. Capacitive-Load-Driving Circuit
X Capacitive Load
A
M
SHDN
VDD
2V/div
2V/div
OUT
CL = 25pF
R = 10MTO
400s/div
GND
10s/div
Figure 4. Shutdown Waveform
Figure 5. Power-Up/Power-Down Waveform
circuit’s response by isolating the load capacitance
from the op amp’s output.
Applications Information
Shutdown Mode
The MAX4401 features a low-power shutdown mode.
When SHDN goes low, the supply current drops to
20pA (typ) and the output enters a hig h-impedance
state. Pull SHDN high to enable the amplifier. Do not
leave SH DN floating. Figure 4 show s the shutdown
waveform.
Power-Up
The MAX4400–MAX4403 outputs typically settle within
5µs after power-up. Figure 5 shows the output voltage
on power-up and power-down.
8
OUT
1V/div
Power Supplies and Layout
The MAX4400–MAX4403 operate from a single +2.5V
to +5.5V power supply. Bypass the power supply with a
0.1µF capacitor to ground.
Good layout techniques optimize perform ance by
decreasing the amount of stray capacitance at the op
amp’s inputs and outputs. To decrease stray capacitance, minimize trace lengths by placing external components close to the op amp’s pins.
Chip Information
MAX4400/MAX4401 TRANSISTOR COUNT: 101
MAX4402 TRANSISTOR COUNT: 202
MAX4403 TRANSISTOR COUNT: 404
_______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
M
Pin Configurations (continued)
A
X
4
4
0
0
MAX4403
OUTA 1
14 OUTD
MAX4402
OUTA 1
INA- 2
13 IND-
INA+ 3
12 IND+
V
11
8 VDD
M
OUTB
2
4
DD
INA+ 3
A
X
SS
6 INBINB+ 5
4
4
0
3
10 INC+
INB+
SS
INB- 6
9 INC-
SOT23-8/SO/MAX
OUTB 7
8 OUTC
TSSOP/SO
Package Information
S
E
L
,
7
S
–
_______________________________________________________________________________________
9
Rail-to-Rail Op Amps with Shutdown
Package Information (continued)
3
0
4
4
X
A
M
–
0
0
4
4
X
S
Single/Dual/Quad, Low-Cost, Single-Supply,
S
P
.
6
0
C
A
M
10
______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
M
Package Information (continued)
S
E
L
T
SO
A
X
4
4
0
0
M
A
X
4
4
0
–3
______________________________________________________________________________________
11
Rail-to-Rail Op Amps with Shutdown
Package Information (continued)
3
0
4
4
X
A
M
–
0
0
4
4
X
SO
Single/Dual/Quad, Low-Cost, Single-Supply,
S
P
.
8
3
T
A
M
Maxim cannot assume responsibility for use of any circuitry other than circuitry ent irely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2001 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.