General Description
The MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
family of operational amplifiers combines wide bandwidth
and excellent DC accuracy with Rail-to-Rail
operation at
the inputs and outputs. These devices require only 650A
per amplifier and operate from either a single supply
(+2.4V to +6.5V) or dual supplies (1.2V to 3.25V). These
unity-gain-stable amplifiers are capable of driving 250
loads and have a 5MHz gain-bandwidth product. The
MAX4323 and MAX4327 feature a low-power shutdown
mode that reduces supply current to 25A and places the
outputs in a high-impedance state.
With their rail-to-rail input common-mode range and
output swing, these amplifiers are ideal for low-voltage,
single-supply operation. In addition, low offset voltage
and high speed make them the ideal signal-condition-
ing stages for precision, low-voltage data-acquisition
systems. The MAX4322/MAX4323 are available in
space-saving SOT23 packages.
________________________Applications
Battery-Powered Instruments
Portable Equipment
Data-Acquisition Systems
Signal Conditioning
Low-Power, Low-Voltage Applications
____________________________Features
o SOT23 Packages (MAX4322/MAX4323)
o +2.4V to +6.5V Single-Supply Operation
o Rail-to-Rail Input Common-Mode Voltage Range
o Rail-to-Rail Output Voltage Swing
o 5MHz Gain-Bandwidth Product
o 650A Quiescent Current per Amplifier
o 700V Offset Voltage
o No Phase Reversal for Overdriven Inputs
o Drive 250 Loads
o 25A Shutdown Mode (MAX4323/MAX4327)
o Unity-Gain Stable for Capacitive Loads
up to 500pF
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
________________________________________________________________ Maxim Integrated Products
1
Typical Operating Circuit
19-1380; Rev 2a; 12/99
PART
MAX4322EUK-T
MAX4322ESA
-40C to +85C
-40C to +85C
TEMP. RANGE
PIN-
PACKAGE
5 SOT23-5
8 SO
Ordering Information
Pin Configurations appear at end of data sheet.
TOP
MARK
ACGE
--
BW
(MHz)
NO. OF
AMPS
MAX4322
5
1
PART
MAX4323
5
1
MAX4329
5
4
PIN-
PACKAGE
5 SOT23-5,
8 MAX/SO
8 MAX/SO/
6 SOT23-6
14 SO
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
SHUTDOWN
--
Yes
--
--
MAX4326
5
2
8 MAX/SO
Yes
MAX4327
5
2
10 MAX, 14 SO
MAX4323ESA
-40C to +85C
8 SO
--
MAX4323EUA
-40C to +85C
8 MAX
--
MAX4322EUA
-40C to +85C
8 MAX
--
MAX4326EUA
-40C to +85C
8 MAX
--
MAX4326ESA
-40C to +85C
8 SO
--
MAX4327ESD
-40C to +85C
14 SO
--
MAX4327EUB
-40C to +85C
10 MAX
--
MAX4329ESD
-40C to +85C
14 SO
--
Selector Guide
MAX187
MAX4322
SHDN
3
1
2
4
5
6
8
7
V
DD
+5V
AIN
VREF
GND
DOUT
SERIAL
INTERFACE
SCLK
CS
MAX4323EUT
-40C to +85C
6 SOT23-6
AAEC
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS--TA = +25C
(V
CC
= +5.0V, V
EE
= 0, V
CM
= 0, V
OUT
= V
CC
/ 2, SHDN = V
CC,
R
L
tied to V
CC
/ 2, unless otherwise noted.)
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.
Supply Voltage (V
CC
-V
EE
) ..................................................+7.5V
All Other Pins ...................................(V
CC
+ 0.3V) to (V
EE
- 0.3V)
Output Short-Circuit Duration.....................................Continuous
(short to either supply)
Continuous Power Dissipation (T
A
= +70C)
5-pin SOT23-5 (derate 7.1mW/C above +70C) .........571mW
6-pin SOT23 (derate 7.1mW/C Above + 70C) ...........571mW
8-pin SO (derate 5.88mW/C above +70C).................471mW
8-pin MAX (derate 4.10mW/C above +70C) ............330mW
10-pin MAX (derate 5.6mW/C above +70C) ............444mW
14-pin SO (derate 8.00mW/C above +70C)...............640mW
Operating Temperature Range
MAX432_E__ ....................................................-40C to +85C
Maximum Junction Temperature .....................................+150C
Storage Temperature Range .............................-65C to +160C
Lead Temperature (soldering, 10sec) .............................+300C
V
CM
= V
EE
, V
CC
CONDITIONS
nA
1
12
Input Offset Current
nA
50
150
Input Bias Current
0.1
Output Resistance
k
500
Differential Input Resistance
dB
66
100
Power-Supply Rejection Ratio
UNITS
MIN
TYP
MAX
PARAMETER
V
OUT
= 0.4V to 4.6V, R
L
= 250
70
86
V
V
EE
V
CC
Common-Mode Input
Voltage Range
1.2
2.50
0.7
2.0
Input Offset Voltage
mV
V
CM
= V
EE
, V
CC
-1.5V < V
DIFF
< 1.5V
Inferred from CMRR test
V
CC
= 2.4V to 6.5V
A
V
= +1V/V
V
EE
V
CM
V
CC
62
94
Common-Mode Rejection Ratio
dB
V
OUT
= 0.25V to 4.75V, R
L
= 100k
106
V
CM
=
V
EE
, V
CC
MAX432_ESA/MAX4327ESD
All other packages
MAX432_ESA/MAX4327ESD
dB
Large-Signal Voltage Gain
All other packages
60
91
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
_______________________________________________________________________________________
3
DC ELECTRICAL CHARACTERISTICS--TA = -40C to +85C
(V
CC
= +5V, V
EE
= 0, V
CM
= 0, V
OUT
= V
CC
/ 2, SHDN = V
CC,
R
L
tied to V
CC
/ 2, unless otherwise noted.) (Note 1)
DC ELECTRICAL CHARACTERISTICS--TA = +25C (continued)
(V
CC
= +5V, V
EE
= 0, V
CM
= 0, V
OUT
= V
CC
/ 2, SHDN = V
CC,
R
L
tied to V
CC
/ 2, unless otherwise noted.)
R
L
= 100k
CONDITIONS
20
V
2.4
6.5
Operating Supply-Voltage Range
200
300
12
V
OL
- V
EE
100
200
MAX4322/
MAX4323
mA
50
Output Short-Circuit Current
UNITS
MIN
TYP
MAX
PARAMETER
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
R
L
= 250
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
R
L
= 250
R
L
= 100k
25
mV
220
350
15
V
OL
- V
EE
Output Voltage Swing
120
250
MAX4326/
MAX4327/
MAX4329
Inferred from PSRR test
V
CC
= 2.4V
V
CM
= V
OUT
= V
CC
/ 2
A
650
V
CC
= 5V
725
1100
Supply Current per Amplifier
MAX432_ESA/MAX4327ESD
V
EE
V
CM
V
CC
CONDITIONS
59
V
CM
= V
EE
, V
CC
Inferred from CMRR test
V
V
EE
V
CC
Common-Mode Input
Voltage Range
Common-Mode Rejection Ratio
nA
20
Input Offset Current
V/C
2
dB
All other packages
Input Offset Voltage Tempco
54
UNITS
MIN
TYP
MAX
V
CM
= V
EE
, V
CC
nA
180
Input Bias Current
mV
MAX4323/MAX4327
V
0.8
SHDN Logic Threshold
2.0
A
1
4
SHDN Input Current
Low
High
MAX4323/MAX4327
V
CC
= 5V
40
60
Shutdown Supply Current
per Amplifier
V
CC
= 2.4V
SHDN > 0.8V, MAX4323/MAX4327
A
25
PARAMETER
All other packages
V
CM
=
V
EE
, V
CC
Input Offset Voltage
6.0
MAX432_ESA/MAX4327ESD
3.0
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
4
_______________________________________________________________________________________
DC ELECTRICAL CHARACTERISTICS --TA = -40C to +85C (continued)
(V
CC
= +5V, V
EE
= 0, V
CM
= 0, V
OUT
= V
CC
/ 2, SHDN = V
CC,
R
L
tied to V
CC
/ 2, unless otherwise noted.) (Note 1)
f = 10kHz, V
OUT
= 2Vp-p, A
V
= +1V/V
V
CC
= 0 to 3V step
64
degrees
A
V
= +1V/V, V
OUT
= 2V step
CONDITIONS
s
5
Phase Margin
MHz
Gain-Bandwidth Product
12
%
0.003
dB
Total Harmonic Distortion
Gain Margin
Settling Time to 0.01%
2.0
s
1
Turn-On Time
V/s
Slew Rate
2
UNITS
MIN
TYP
MAX
PARAMETER
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= 0, V
CM
= V
OUT
= V
CC
/ 2, SHDN = V
CC,
T
A
= +25C unless otherwise noted.)
V
OUT
= 0.4V to 4.6V, R
L
= 250
V
CC
= 2.4V to 6.5V
R
L
= 250
CONDITIONS
dB
66
dB
62
Power-Supply Rejection Ratio
Output Voltage Swing
mV
350
MAX4322/
MAX4323
250
UNITS
MIN
TYP
MAX
PARAMETER
V
CC
- V
OH
V
OL
- V
EE
400
MAX4326/
MAX4327/
MAX4329
pF
3
Input Capacitance
f = 1kHz
nV/
Hz
22
Input Noise Voltage Density
f = 1kHz
pA
0.4
Input Noise Current Density
dB
135
Amp-Amp Isolation
A
V
= +1V/V
pF
250
Capacitive Load Stability
Note 1: All devices are 100% tested at T
A
= +25C. All temperature limits are guaranteed by design.
MAX4323/MAX4327
V
0.8
SHDN Logic Threshold
Large-Signal Voltage Gain
R
L
= 250
V
CC
- V
OH
300
V
OL
- V
EE
2.0
MAX4323/MAX4327
A
5
SHDN Input Current
V
2.4
6.5
Operating Supply-Voltage Range
Low
High
V
CM
= V
CC
/ 2
mA
1.2
Supply Current per Amplifier
SHDN
0.8V, MAX4323/MAX4327
A
70
Shutdown Supply Current
per Amplifier
s
1
SHDN Delay
MAX4323/MAX4327
0.2
Enable
Disable
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
_______________________________________________________________________________________
5
60
-40
100
1k
10k
1M
10M
100k
100M
GAIN AND PHASE vs. FREQUENCY
-20
FREQUENCY (Hz)
GAIN (dB)
0
20
40
PHASE
GAIN
A
V
= +1000
NO LOAD
PHASE (DEGREES)
180
144
72
0
-72
-144
-180
-108
-36
36
108
MAX4322/26/29-01
60
-40
100
1k
10k
1M
10M
100k
100M
GAIN AND PHASE vs. FREQUENCY
(WITH C
LOAD
)
-20
MAX4322/26/29-02
FREQUENCY (Hz)
GAIN (dB)
0
20
40
PHASE
GAIN
A
V
= +1000
R
L
=
C
L
= 500pF
PHASE (DEGREES)
180
144
72
0
-72
-144
-180
-108
-36
36
108
0
-100
10
100
1k
100k
1M
10M
10k
100M
POWER-SUPPLY REJECTION
vs. FREQUENCY
-80
MAX4322/26/29-03
FREQUENCY (Hz)
PSR (dB)
-60
-40
-20
A
V
= +1
__________________________________________Typical Operating Characteristics
(V
CC
= +5V, V
EE
= 0, V
CM
= V
CC
/ 2, SHDN = V
CC,
T
A
= +25C, unless otherwise noted.)
1k
10k
10M
FREQUENCY (Hz)
100k
1M
100
130
50
60
70
80
90
100
110
120
MAX4326/MAX4327/MAX4329
CHANNEL SEPARATION vs. FREQUENCY
MAX4322/26/29-04
CHANNEL SEPARATION (dB)
100
0.01
100
1k
100k
1M
10M
10k
100M
OUTPUT IMPEDANCE
vs. FREQUENCY
0.1
MAX4322/26/29-05
FREQUENCY (Hz)
OUTPUT IMPEDANCE (
)
1
10
A
V
= +1
900
500
550
600
650
700
750
800
850
-40 -25 -10
5
20
35
50
65
80
95
SUPPLY CURRENT PER AMPLIFIER
vs. TEMPERATURE
MAX4322/26/29-6
TEMPERATURE (C)
SUPPLY CURRENT (
A)
V
CC
= 6.5V
V
CC
= 2.7V
-3.00
-2.25
-0.75
-1.50
0
1.50
0.75
2.25
3.00
-40 -25 -10
5
20
35
50
65
80
95
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4322/26/29-7
TEMPERATURE (C)
VOLTAGE (mV)
SOT23-5/6
PACKAGE
SO PACKAGE
-50
0
1
2
3
4
5
6
INPUT BIAS CURRENT
vs. COMMON-MODE VOLTAGE
MAX4322/26/29-8
COMMON-MODE VOLTAGE (V)
INPUT BIAS CURRENT (nA)
-40
-30
-20
-10
0
10
20
30
40
50
V
CC
= 2.7V
V
CC
= 6.5V
0
10
20
30
40
50
60
-40 -25 -10
5
20
35
50
65
80
95
MAX4323/MAX4327
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX4323-11
TEMPERATURE (C)
SHUTDOWN SUPPLY CURRENT (mA)
V
CC
= 6.5V
V
CC
= 2.7V
SHDN = 0V
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