MAXIM MAX4323EBT-T

19-1380; Rev 3; 10/02
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
____________________________Features
♦ 6-Bump UCSP Package (MAX4323)
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-conditioning stages for precision, low-voltage data-acquisition
systems.
The MAX4323 is offered in a small 6-bump chip-scale
package (UCSP™). The MAX4322/MAX4323 are also
available in space-saving SOT23 packages.
♦ Drive 250Ω Loads
♦ 2.4V to 6.5V Single-Supply Operation
♦ Rail-to-Rail Input Common-Mode Voltage Range
♦ Rail-to-Rail Output Voltage Swing
♦ 5MHz Gain-Bandwidth Product
♦ 650µA Quiescent Current per Amplifier
♦ 700µV Offset Voltage
♦ No Phase Reversal for Overdriven Inputs
♦ 25µA Shutdown Mode (MAX4323/MAX4327)
♦ Unity-Gain Stable for Capacitive Loads
Up to 500pF
Ordering Information
TEMP
RANGE
PART
Selector Guide
PART
BW
(MHz)
NO. OF
AMPS
PIN/BUMPPACKAGE
MAX4322
5
1
5 SOT23,
8 µMAX/SO
MAX4323
5
1
6 SOT23/UCSP,
8 µMAX/SO
MAX4326
5
2
8 µMAX/SO
MAX4327
5
2
10 µMAX, 14 SO
MAX4329
5
4
14 SO
SHUTDOWN
MAX4322EUK-T -40oC to +85oC
o
o
PIN/BUMPPACKAGE
TOP
MARK
5 SOT23-5
ACGE
MAX4322EUA
-40 C to +85 C
8 µMAX
—
MAX4322ESA
-40oC to +85oC
8 SO
—
Ordering Information continued at end of data sheet.
—
Pin Configurations
Yes
—
TOP VIEW
(BUMPS ON BOTTOM)
Yes
—
1
B
A
IN+
VEE
________________________Applications
Battery-Powered
Instruments
RSSI Systems
Data-Acquisition
Systems
Signal Conditioning
PA Biasing
Low-Power, Low-Voltage
Applications
Portable Equipment
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
UCSP is a trademark of Maxim Integrated Products, Inc.
MAX4323
2
IN-
OUT
3
SHDN
VCC
UCSP
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
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
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 consume only
650µA 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 250Ω
loads and have a 5MHz gain-bandwidth product. The
MAX4323 and MAX4327 feature a low-power shutdown
mode that reduces supply current to 25µA and places the
outputs in a high-impedance state.
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC - VEE) ...................................................7.5V
All Other Pins ...................................(VCC + 0.3V) to (VEE - 0.3V)
Output Short-Circuit Duration.....................................Continuous
(Short to Either Supply)
Continuous Power Dissipation (TA = +70°C)
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
6-Bump UCSP (derate 3.9mW/°C above +70°C).........308mW
6-Pin SOT23 (derate 7.1mW/°C Above + 70°C) ..........571mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin µMAX (derate 4.10mW/°C above +70°C) ...........330mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
14-Pin SO (derate 8.00mW/°C above +70°C)..............640mW
Operating Temperature Range
MAX432_E__ ...................................................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Bump Reflow Temperature ..............................................+235°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
DC ELECTRICAL CHARACTERISTICS—TA = +25°C
(VCC = 5.0V, VEE = 0V, VCM = 0V, VOUT = VCC/2, SHDN = VCC, RL connected to VCC/2, unless otherwise noted.)
PARAMETER
Input Offset Voltage
SYMBOL
CONDITIONS
MIN
TYP
MAX
MAX432_ESA/
MAX4327ESD
±0.7
±2.0
All other packages
UNITS
mV
VOS
VCM = VEE or VCC
±1.2
±2.50
IB
VCM = VEE or VCC
±50
±150
nA
Input Offset Current
IOS
VCM = VEE or VCC
±1
±12
nA
Differential Input Resistance
RIN
-1.5V < VDIFF < +1.5V
500
Input Bias Current
Common-Mode Input Voltage
Range
Common-Mode Rejection Ratio
CMVR
CMRR
Inferred from CMRR test
VEE ≤ VCM ≤ VCC
VCC
VEE
MAX432_ESA/
MAX4327ESD
62
kΩ
V
94
dB
All other packages
60
91
66
Power-Supply Rejection Ratio
PSRR
VCC = 2.4V to 6.5V
100
dB
Output Resistance
ROUT
AV = +1V/V
0.1
Ω
VOUT = 0.25V to 4.75V, RL = 100kΩ
106
Large-Signal Voltage Gain
AV
VOUT = 0.4V to 4.6V, RL = 250Ω
MAX4322/
MAX4323
RL = 100kΩ
RL = 250Ω
Output Voltage Swing
VO
MAX4326/
MAX4327/
MAX4329
Output Short-Circuit Current
SHDN Logic Threshold
SHDN Input Current
2
RL = 100kΩ
RL = 250Ω
70
VCC - VOH
12
VOL - VEE
20
VCC - VOH
200
300
VOL - VEE
100
200
VCC - VOH
15
VOL - VEE
25
VCC - VOH
220
350
VOL - VEE
120
250
ISC
VIL
VIH
dB
86
50
MAX4323/MAX4327
MAX4323/MAX4327
Low
High
mA
0.8
2.0
±1
_______________________________________________________________________________________
mV
±4
V
µA
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
(VCC = 5V, VEE = 0V, VCM = 0V, VOUT = VCC/2, SHDN = VCC, RL connected to VCC/2, unless otherwise noted.)
PARAMETER
SYMBOL
Operating Supply Voltage Range
VCC
Inferred from PSRR test
Supply Current per Amplifier
ICC
VCM = VOUT = VCC/2
I SHDN
V SHDN ≤ 0.8V,
MAX4323/MAX4327
Shutdown Supply Current
per Amplifier
CONDITIONS
MIN
TYP
2.4
VCC = 2.4V
650
VCC = 5V
725
VCC = 2.4V
25
VCC = 5V
40
MAX
UNITS
6.5
V
1100
60
µA
µA
DC ELECTRICAL CHARACTERISTICS—TA = -40°C to +85°C
(VCC = 5V, VEE = 0V, VCM = 0V, VOUT = VCC/2, SHDN = VCC, RL connected to VCC/2, unless otherwise noted.) (Note 1)
PARAMETER
Input Offset Voltage
SYMBOL
VOS
CONDITIONS
VCM = VEE or VCC
MIN
TYP
MAX432_ESA/
MAX4327ESD
±3.0
All other packages
Input Offset Voltage Tempco
Input Bias Current
Input Offset Current
±2
±180
nA
IOS
VCM = VEE or VCC
±20
nA
VCC
V
Common-Mode Rejection Ratio
CMRR
VEE ≤ VCM ≤ VCC
SHDN Logic Threshold
PSRR
AV
VO
VIL
VIH
SHDN Input Current
VEE
MAX432_ESA/
MAX4327ESD
59
All other packages
54
Operating Supply Voltage Range
VCC
Supply Current per Amplifier
ICC
I SHDN
dB
VCC = 2.4V to 6.5V
62
dB
VOUT = 0.4V to 4.6V, RL = 250Ω
66
dB
MAX4322/
MAX4323
RL = 250Ω
MAX4326/
MAX4327/
MAX4329
RL = 250Ω
MAX4323/MAX4327
VCC - VOH
350
VOL - VEE
250
VCC - VOH
400
VOL - VEE
300
Low
High
0.8
2.0
MAX4323/MAX4327
Shutdown Supply Current
per Amplifier
µV/°C
VCM = VEE or VCC
Inferred from CMRR test
Output Voltage Swing
mV
IB
CMVR
Large-Signal Voltage Gain
UNITS
±6.0
TCVOS
Common-Mode Input
Voltage Range
Power-Supply Rejection Ratio
MAX
±5
2.4
VCM = VOUT = VCC/2
V SHDN ≤ 0.8V, MAX4323/MAX4327
mV
V
µA
6.5
V
1200
µA
70
µA
_______________________________________________________________________________________
3
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
DC ELECTRICAL CHARACTERISTICS—TA = +25°C (continued)
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
AC ELECTRICAL CHARACTERISTICS
(VCC = 5V, VEE = 0V, VCM = VOUT = VCC/2, SHDN = VCC, TA = +25°C, unless otherwise noted.)
PARAMETER
Gain-Bandwidth Product
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
GBWP
5
MHz
Phase Margin
φM
64
Degrees
Gain Margin
GM
12
dB
Total Harmonic Distortion
THD
Slew Rate
SR
Settling Time to 0.01%
tS
Turn-On Time
tON
SHDN Delay
f = 10kHz, VOUT = 2VP-P, AV = +1V/V
AV = +1V/V, VOUT = 2V step
VCC = 0 to 3V step
MAX4323/MAX4327
0.003
%
2
V/µs
2.0
µs
1
µs
Enable
1
Disable
0.2
µs
Input Capacitance
CIN
3
pF
Input Noise-Voltage Density
en
f = 1kHz
22
nV/√Hz
Input Noise-Current Density
in
f = 1kHz
0.4
pA/√Hz
135
dB
CL
AV = +1V/V
250
pF
Amp-Amp Isolation
Capacitive-Load Stability
Note 1: All devices are 100% tested at TA = +25°C. All temperature limits are guaranteed by design.
4
_______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
GAIN AND PHASE vs. FREQUENCY
(WITH CLOAD)
60
180
144
144
72
20
36
0
-36
PHASE
GAIN
72
20
36
0
0
-36
PHASE
-40
100
1k
AV = +1000
RL = ∞
CL = 500pF
-20
-108
AV = +1000
NO LOAD
-144
10k
100k
1M
-40
100
-180
100M
10M
1k
MAX4326/MAX4327/MAX4329
CHANNEL SEPARATION vs. FREQUENCY
100k
1M
10M
-100
-180
100M
10
100
1k
100
AV = +1
OUTPUT IMPEDANCE (Ω)
110
100
90
80
70
100k
1M
10M
100M
MAX4323/MAX4327
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX4322/26/29-05
120
10k
FREQUENCY (Hz)
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX4322/26/29-04
130
10
1
0.1
60
60
50
VCC = 6.5V
40
30
VCC = 2.7V
20
10
VSHDN = 0V
50
0
0.01
10k
100k
FREQUENCY (Hz)
1M
10M
100
1k
10k
100k
SUPPLY CURRENT PER AMPLIFIER
vs. TEMPERATURE
850
800
700
VCC = 2.7V
650
600
0.75
0
-0.75
-1.50
550
-2.25
500
-3.00
35
50
TEMPERATURE (°C)
65
80
95
20
35
50
65
80
95
INPUT BIAS CURRENT
vs. COMMON-MODE VOLTAGE
SOT23-5/6
PACKAGE
2.25
5
TEMPERATURE (°C)
3.00
VOLTAGE (mV)
750
20
-40 -25 -10
100M
1.50
VCC = 6.5V
5
10M
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4322/26/29-07
900
-40 -25 -10
1M
FREQUENCY (Hz)
SO PACKAGE
50
40
INPUT BIAS CURRENT (nA)
1k
MAX4322/26/29-08
100
MAX4322/26/29-09
CHANNEL SEPARATION (dB)
-144
FREQUENCY (Hz)
FREQUENCY (Hz)
SUPPLY CURRENT (µA)
-60
-80
-108
10k
-40
-72
-72
-20
-20
SHUTDOWN SUPPLY CURRENT (µA)
0
GAIN (dB)
GAIN (dB)
GAIN
PHASE (DEGREES)
108
40
AV = +1
0
108
40
MAX4323-06
180
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
PSRR (dB)
60
MAX4322/26/29-02
PHASE (DEGREES)
MAX4322/26/29-01
MAX4322/26/29-03
GAIN AND PHASE vs. FREQUENCY
VCC = 2.7V
30
VCC = 6.5V
20
10
0
-10
-20
-30
-40
-50
-40 -25 -10
5
20
35
50
TEMPERATURE (°C)
65
80
95
0
1
2
3
4
5
6
COMMON-MODE VOLTAGE (V)
_______________________________________________________________________________________
5
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
__________________________________________Typical Operating Characteristics
(VCC = 5V, VEE = 0V, VCM = VCC/2, SHDN = VCC, TA = +25°C, unless otherwise noted.)
_____________________________Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VCM = VCC/2, SHDN = VCC, TA = +25°C, unless otherwise noted.)
COMMON-MODE REJECTION RATIO
vs. TEMPERATURE
VCC = 2.7V, VCM = VCC
110
10
0
-10
-20
VCM = 0 TO 5.0V
105
100
95
VCC = 2.7V, VCM = VEE
-30
250
RL TO VCC
200
VCM = -0.2V TO 5.2V
80
5
20
35
50
65
80
95
VCC = 2.7V, RL = 100kΩ
0
-40 -25 -10
5
20
35
50
65
80
95
-40 -25 -10
5
20
35
50
65
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
MAXIMUM OUTPUT VOLTAGE
vs. TEMPERATURE
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
VCC = 6.5V, RL = 500Ω
VCC = 2.7V
RL TO VEE
110
RL = 100kΩ
100
GAIN (dB)
200
VCC = 2.7V, RL = 500Ω
100
RL = 2kΩ
RL = 500Ω
80
95
VCC = 6.5V
RL TO VEE
110
RL = 100kΩ
100
RL = 10kΩ
90
120
GAIN (dB)
250
120
MAX4322/26/29-14
RL TO VEE
MAX4322/26/29-13
300
VCC - VOUT (mV)
VCC = 6.5V, RL = 100kΩ
50
-40 -25 -10
50
VCC = 2.7V, RL = 500Ω
100
85
VCC = 6.5V, VCM = VEE
-60
150
150
90
-40
-50
VCC = 6.5V, RL = 500Ω
RL = 10kΩ
RL = 2kΩ
90
80
80
70
70
MAX4322/26/29-15
20
115
VOUT - VEE (mV)
30
120
MAX4322/26/29-11
VCC = 6.5V, VCM = VCC
CMRR (dB)
INPUT BIAS CURRENT (nA)
40
MAX4322/26/29-10
50
MINIMUM OUTPUT VOLTAGE
vs. TEMPERATURE
MAX4322/26/29-12
INPUT BIAS CURRENT
vs. TEMPERATURE
RL = 500Ω
VCC = 6.5V, RL = 100kΩ (TOP)
VCC = 2.7V, RL = 100kΩ (BOTTOM)
-40 -25 -10
35
50
65
80
100
200
300
400
500
600
0
100
200
300
400
500
TEMPERATURE (°C)
OUTPUT VOLTAGE: FROM VCC (mV)
OUTPUT VOLTAGE: FROM VCC (mV)
LARGE-SIGNAL GAIN
vs. TEMPERATURE
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
VCC = 2.7V,
RL TO VEE
110
105
VCC = 6.5V, RL TO VCC
90
RL = 100kΩ
VCC = 2.7V
RL TO VCC
110
VCC = 6.5V
RL TO VCC
110
RL = 100kΩ
RL = 10kΩ
RL = 10kΩ
RL = 2kΩ
90
RL = 500Ω
600
RL = 2kΩ
100
80
85
90
RL = 500Ω
80
70
70
80
120
100
100
95
120
GAIN (dB)
VCC = 6.5V,
RL TO VEE
MAX4322/26/29-17
RL = 500Ω
VOUT(P-P) = VCC - 1V
115
VCC = 2.7V, RL TO VCC
60
60
75
-40 -25 -10
5
20
35
50
TEMPERATURE (°C)
6
60
0
95
GAIN (dB)
120
20
MAX4322/26/29-16
125
5
MAX4322/26/29-18
60
0
GAIN (dB)
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
65
80
95
0
100
200
300
400
500
OUTPUT VOLTAGE: FROM VEE (mV)
600
0
100
200
300
400
500
OUTPUT VOLTAGE: FROM VEE (mV)
_______________________________________________________________________________________
600
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
(VCC = 5V, VEE = 0V, VCM = VCC/2, SHDN = VCC, TA = +25°C, unless otherwise noted.)
VCC = 2.7V, RL TO VEE
95
VCC = 2.7V, RL TO VCC
90
85
VOUT(P-P) = VCC - 600mV
RL = 100kΩ
80
-40 -25 -10
5
20
35
50
65
80
1.4
5
20
35
50
65
80
SMALL-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
MAX4322/26/29-22
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. PEAK-TO-PEAK SIGNAL AMPLITUDE
95
10
VOLTAGE (50mV/div)
IN
4.2
4.4
4.6
4.8
100k
IN
OUT
RL = 100kΩ
0.001
200ns/div
5.0
200ns/div
PEAK-TO-PEAK SIGNAL AMPLITUDE (V)
LARGE-SIGNAL TRANSIENT
RESPONSE (INVERTING)
LARGE-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
MAX4322/26/29-25
AV = +1
AV = -1
IN
IN
VOLTAGE (2V/div)
4.0
1k
10k
FREQUENCY (Hz)
AV = -1
OUT
RL = 10kΩ
100
SMALL-SIGNAL TRANSIENT
RESPONSE (INVERTING)
AV = +1
VOLTAGE (50mV/div)
RL = 2kΩ
RL = 250Ω
0.015
0
-40 -25 -10
TEMPERATURE (°C)
0.01
0.020
0.005
TEMPERATURE (°C)
AV = +1
10kHz SINE WAVE
RL TO VCC/2
500kHz LOWPASS FILTER
0.025
0.010
1.3
95
VOLTAGE (2V/div)
THD + N (%)
1.5
1.2
75
0.1
1.6
MAX4322/26/29-26
100
0.030
1.7
MAX4322/26/29-24
105
AV = +1
2VP-P SIGNAL
500kHz LOWPASS FILTER
RL = 10kΩ TO VCC/2
0.035
MAX4322/26/29-23
GAIN (dB)
110
1.8
0.040
THD + N (%)
VCC = 6.5V, RL TO VCC
115
1.9
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX4322/26/29-20
VCC = 6.5V, RL TO VEE
120
MINIMUM OPERATING VOLTAGE (V)
MAX4322/26/29-19
125
MINIMUM OPERATING VOLTAGE
vs. TEMPERATURE
MAX4322/26/29-21
LARGE-SIGNAL GAIN
vs. TEMPERATURE
OUT
OUT
2µs/div
2µs/div
_______________________________________________________________________________________
7
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
_____________________________Typical Operating Characteristics (continued)
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Pin Description
PIN
MAX4322
MAX4323
SOT23 SO/µMAX
8
SOT23 SO/µMAX
NAME
MAX4327
MAX4326
UCSP
FUNCTION
MAX4329
µMAX
SO
1
6
1
6
A2
—
—
—
—
OUT
Output
2
4
2
4
A1
4
4
4
11
VEE
Negative Supply.
Ground for singlesupply operation.
3
—
3
3
B1
—
—
—
—
IN+
Noninverting Input
4
—
4
2
B2
—
—
—
—
IN-
Inverting Input
5
7
6
7
A3
8
10
14
4
VCC
Positive Supply
—
1, 5, 8
—
1, 5
—
—
—
5, 7,
8 , 10
—
N.C.
No Connection. Not
internally connected.
—
—
SHDN
Shutdown Control.
Connected high or
leave floating to
enable amplifier.
1, 9
1, 13
1, 7
OUT1,
OUT2
Outputs for Amps 1
and 2
2, 6
2, 8
2, 12
2, 6
IN1-, IN2-
Inverting Inputs for
Amps 1 and 2
3, 5
3, 7
3, 11
3, 5
IN1+,
IN2+
Noninverting Inputs
for Amps 1 and 2
—
—
5
8
B3
—
—
—
—
—
—
1, 7
—
2
—
—
—
—
3
—
—
—
Shutdown Control for
Amps 1 and 2.
Connected high or
leave floating to
enable amplifier.
—
—
—
—
—
—
5, 6
5, 9
—
SHDN1,
SHDN2
—
—
—
—
—
—
—
—
8, 14
OUT3,
OUT4
Outputs for Amps 3
and 4
—
—
—
—
—
—
—
—
9, 13
IN3-, IN4-
Inverting Inputs for
Amps 3 and 4
—
—
—
—
—
—
—
—
10, 12
IN3+,
IN4+
Noninverting Inputs
for Amps 3 and 4
_______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
Rail-to-Rail Input Stage
Devices in the MAX4322/MAX4323/MAX4326/MAX4327/
MAX4329 family of high-speed amplifiers have rail-torail input and output stages designed for low-voltage,
single-supply operation. The input stage consists of
separate NPN and PNP differential stages, which combine to provide an input common-mode range extending to the supply rails. The PNP stage is active for input
voltages close to the negative rail, and the NPN stage
is active for input voltages near the positive rail. The
input offset voltage is typically below 250µV. The
switchover transition region, which occurs near VCC/2,
has been extended to minimize the slight degradation in
CMRR caused by the mismatch of the input pairs. Their
low offset voltage, high bandwidth, and rail-to-rail
common-mode range make these op amps excellent
choices for precision, low-voltage, data-acquisition
systems.
Since the input stage switches between the NPN and
PNP pairs, the input bias current changes polarity as
the input voltage passes through the transition region.
To reduce the offset error caused by input bias currents flowing through external source impedances,
match the effective impedance seen by each input
(Figures 1a, 1b). High-source impedances, together
with the input capacitance, can create a parasitic pole
that produces an underdamped signal response.
Reducing the input impedance or placing a small (2pF
to 10pF) capacitor across the feedback resistor
improves the response.
The MAX4322/MAX4323/MAX4326/MAX4327/MAX4329s’
inputs are protected from large differential input voltages
by 1kΩ series resistors and back-to-back triple diodes
across the inputs (Figure 2). For differential input voltages less than 1.8V, the input resistance is typically
500kΩ. For differential input voltages greater than 1.8V,
the input resistance is approximately 2kΩ, and the input
bias current is determined by the following equation:
R3
R3
MAX4322/MAX4323
MAX4326/MAX4327
MAX4329
MAX4322/MAX4323
MAX4326/MAX4327
MAX4329
R1
R3 = R1
R2
R2
R1
R3 = R1
Figure 1a. Reducing Offset Error Due to Bias Current
(Noninverting)
R2
R2
Figure 1b. Reducing Offset Error Due to Bias Current
(Inverting)
1kΩ
1kΩ
Figure 2. Input Protection Circuit
_______________________________________________________________________________________
9
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
__________ Applications Information
IBIAS =
VDIFF - 1.8V
2kΩ
Rail-to-Rail Output Stage
The minimum output voltage is within millivolts of
ground for single-supply operation where the load is
referenced to ground (VEE). Figure 3 shows the input
voltage range and output voltage swing of a MAX4322
connected as a voltage follower. With a 3V supply and
the load tied to ground, the output swings from 0 to
2.90V. The maximum output voltage swing depends on
the load, but is within 350mV of a 5V supply, even with
the maximum load (500Ω to ground).
Driving a capacitive load can cause instability in most
high-speed op amps, especially those with low quiescent current. The MAX4322/MAX4323/MAX4326/
MAX4327/MAX4329 have a high tolerance for capacitive loads. They are stable with capacitive loads up to
500pF. Figure 4 gives the stable operating region for
capacitive loads. Figures 5 and 6 show the response
with capacitive loads and the results of adding an isolation resistor in series with the output (Figure 7). The
resistor improves the circuit’s phase margin by isolating the load capacitor from the op amp’s output.
Power-Up and Shutdown Mode
The MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
amplifiers typically settle within 1µs after power-up.
10,000
VCC = 3V
AV = +1
CAPACITIVE LOAD (pF)
VOLTAGE (1V/div)
IN
OUT
UNSTABLE
REGION
1000
RL TO VEE
VOUT = VCC / 2
100
100
2µs/div
Figure 3. Rail-to-Rail Input/Output Voltage Range
IN
AV = +1
CL = 1000pF
RS = 39Ω
OUT
OUT
400ns/div
Figure 5. Small-Signal Transient Response with
Capacitive Load
10
100k
VOLTAGE (50mV/div)
IN
1k
10k
RESISTIVE LOAD (Ω)
Figure 4. Capacitive-Load Stability
AV = +1
CL = 500pF
VOLTAGE (50mV/div)
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
400ns/div
Figure 6. Transient Response to Capacitive Load with
Isolation Resistor
______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
MAX4322/MAX4323
MAX4326/MAX4327
MAX4329
0 TO 2.7V
STEP FOR
POWER-UP
TEST 2kΩ
RS
VOUT
CL
MAX4322/MAX4323
MAX4326/MAX4327
MAX4329
SUPPLY-CURRENT
10Ω MONITORING POINT
2kΩ
10kΩ
Figure 7. Capacitive-Load-Driving Circuit
Figure 8. Power-Up Test Circuit
Figures 9 and 10 show the output voltage and supply
current on power-up of the test circuit in Figure 8.
0.33mm (13mil). Round or square pads are permissible. Connect multiple vias from the ground plane as
close to the ground connections as possible.
The MAX4323 and MAX4327 have a shutdown option.
When shutdown (SHDN) is pulled low, the supply current drops to 25µA per amplifier and the amplifiers are
disabled with the outputs in a high-impedance state.
Pulling SHDN high or leaving it floating (1µA internal
pullup) enables the amplifier. In the dual-amplifier
MAX4327, the shutdown functions operate independently. Figures 11 and 12 show the output voltage and
supply current responses of the MAX4323 to a shutdown pulse.
Power Supplies and Layout
The MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
operate from a single 2.4V to 6.5V power supply, or
from dual supplies of ±1.2V to ±3.25V. For single-supply
operation, bypass the power supply with a 0.1µF
ceramic capacitor in parallel with at least 1µF. For dual
supplies, bypass each supply to ground.
Good layout improves performance by decreasing the
amount of stray capacitance at the op amp’s inputs and
outputs. To decrease stray capacitance, minimize trace
lengths and resistor leads by placing external components close to the op amp.
UCSP Information
Layout Issues
Design the layout for the device to be as compact as
possible to minimize parasitics. The UCSP uses a
bump pitch of 0.5mm (19.7mil) and a bump diameter of
0.33mm (~12mil). Therefore, lay out the solder-pad
spacing on 0.5mm (19.7mil) centers, using a pad size
of 0.25mm (~10mil) and a solder mask opening of
Install capacitors as close as possible to the device
supply voltage input. Place the ground end of these
capacitors near the ground plane to provide a lowimpedance return path for the signal current.
Prototype Chip Installation
Alignment keys on the PC board, around the area
where the chip is located, are helpful in the prototype
assembly process. It is better to align the chip on the
board before any other components are placed, and
then place the board on a hot plate or hot surface until
the solder starts melting. Remove the board from the
hot plate without disturbing the position of the chip and
let it cool down to room temperature before processing
the board further.
MAX4323EBT (UCSP) Marking Information
TOP VIEW
(BUMPS ON BOTTOM)
A1
A2
A3
ORIENTATION
PRODUCT ID CODE
LOT CODE
AAA
AAA
______________________________________________________________________________________
11
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
VCC
VCC
VCC
1V/div
VOLTAGE (1V/div)
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
OUT
ICC
500µA/div
5µs/div
5µs/div
Figure 9. Power-Up Output Voltage
Figure 10. Power-Up Supply Current
VCC = 2.7V
RL = 10kΩ
VCC = 2.7V
SHDN
1V/div
SHDN
1V/div
OUT
0.5V/div
ICC
500µA/div
2µs/div
Figure 11. Shutdown Output Voltage
12
2µs/div
Figure 12. Shutdown Enable/Disable Supply Current
______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
TOP VIEW
OUT 1
VEE 2
5
VCC
IN1- 2
MAX4322
IN+ 3
N.C. 1
IN-
4
IN1- 2
IN1+ 3
7
5
SO/µMAX
VCC
6
OUT
VEE 4
5
N.C.
VCC
VEE 2
OUT2
IN2-
14 VCC
IN1- 2
13 OUT2
IN2+
VEE 4
MAX4327
N.C. 5
MAX4323
IN+ 3
6
VCC
5
SHDN
4
IN-
N.C. 1
8
SHDN
7
VCC
IN1+ 3
6
OUT
VEE 4
5
N.C.
IN1- 2
OUT1 1
IN1-
12 IN2-
IN1+
3
11 IN2+
VEE
4
10 N.C.
SHDN1 6
9
SHDN2
N.C. 7
8
N.C.
SHDN1
OUT1 1
14 OUT4
OUT2
IN1- 2
13 IN4-
8
IN2-
IN1+ 3
7
IN2+
VCC 4
SHDN2
IN2+ 5
10 VCC
2
9
MAX4327
5
MAX4323
SO/µMAX
SOT23
OUT1 1
IN1+ 3
6
VEE 4
7
OUT 1
SO/µMAX
8
MAX4326
N.C.
IN1+ 3
SOT23-5
OUT1 1
MAX4322
8
6
µMAX
12 IN4+
MAX4329
10 IN3+
IN2- 6
9
IN3-
OUT2 7
8
OUT3
SO
UCSP Reliability
The UCSP represents a unique packaging form factor
that may not perform as well as a packaged product
through traditional mechanical reliability tests. UCSP
reliability is integrally linked to the user's assembly
methods, circuit board material, and usage environment. The user should closely review these areas when
considering use of a UCSP.
Performance through operating-life test and moisture
resistance remains uncompromised. The wafer-fabrication process primarily determines the performance.
Mechanical stress performance is a greater consideration for UCSPs. UCSPs are attached through direct solder contact to the user's PC board, foregoing the
inherent stress relief of a packaged product lead frame.
Solder-joint contact integrity must be considered.
Comprehensive reliability tests have been performed
and are available upon request. In conclusion, the
UCSP performs reliably through environmental stresses.
11 VEE
SO
Ordering Information (continued)
TEMP
RANGE
PART
PIN/BUMPPACKAGE
MAX4323EBT-T* -40oC to +85oC
TOP
MARK
6 UCSP-6
AAW
MAX4323EUT-T
-40oC to +85oC
6 SOT23-6
AAEC
MAX4323EUA
-40oC to +85oC
8 µMAX
—
o
o
MAX4323ESA
-40 C to +85 C
8 SO
—
MAX4326EUA
-40oC to +85oC
8 µMAX
—
MAX4326ESA
-40oC to +85oC
8 SO
—
o
o
MAX4327EUB
-40 C to +85 C
10 µMAX
—
MAX4327ESD
-40oC to +85oC
14 SO
—
MAX4329ESD
-40oC to +85oC
14 SO
—
*UCSP reliability is integrally linked to the user’s assembly
methods, circuit board material, and environment. See the
UCSP Reliability Notice in the UCSP Reliability section of this
data sheet for more information.
______________________________________________________________________________________
13
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Pin Configurations (continued)
Typical Operating Circuit
MAX4322 TRANSISTOR COUNT: 170
MAX4323 TRANSISTOR COUNT: 170
MAX4326 TRANSISTOR COUNT: 340
MAX4327 TRANSISTOR COUNT: 340
MAX4329 TRANSISTOR COUNT: 680
PROCESS: Bipolar
SUBSTRATE CONNECTED TO VEE
+5V
MAX187
3
6
SERIAL
INTERFACE
8
7
SHDN
VDD
DOUT
AIN
SCLK
VREF
CS
GND
Chip Information
1
2
MAX4322
4
5
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
e
10LUMAX.EPS
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
4X S
10
INCHES
10
H
ÿ 0.50±0.1
0.6±0.1
1
1
0.6±0.1
BOTTOM VIEW
TOP VIEW
D2
MILLIMETERS
MAX
DIM MIN
0.043
A
0.006
A1
0.002
A2
0.030
0.037
D1
0.116
0.120
D2
0.114
0.118
E1
0.116
0.120
E2
0.114
0.118
H
0.187
0.199
L
0.0157 0.0275
L1
0.037 REF
b
0.007
0.0106
e
0.0197 BSC
c
0.0035 0.0078
0.0196 REF
S
α
0∞
6∞
MAX
MIN
1.10
0.05
0.15
0.75
0.95
2.95
3.05
2.89
3.00
3.05
2.95
2.89
3.00
4.75
5.05
0.40
0.70
0.940 REF
0.177
0.270
0.500 BSC
0.090
0.200
0.498 REF
0∞
6∞
E2
GAGE PLANE
A2
c
A
b
D1
FRONT VIEW
A1
α
E1
L
L1
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, 10L uMAX/uSOP
APPROVAL
DOCUMENT CONTROL NO.
21-0061
14
______________________________________________________________________________________
REV.
I
1
1
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
6L, UCSP.EPS
SOT5L.EPS
______________________________________________________________________________________
15
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
Package Information (continued)
6LSOT.EPS
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
4X S
8
E
ÿ 0.50±0.1
8
INCHES
DIM
A
A1
A2
b
H
c
D
e
E
H
0.6±0.1
1
L
1
α
0.6±0.1
S
BOTTOM VIEW
D
MIN
0.002
0.030
MAX
0.043
0.006
0.037
0.010
0.014
0.005
0.007
0.116
0.120
0.0256 BSC
0.116
0.120
0.188
0.198
0.016
0.026
6∞
0∞
0.0207 BSC
8LUMAXD.EPS
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Single/Dual/Quad, Low-Cost, UCSP/SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
MILLIMETERS
MAX
MIN
0.05
0.75
1.10
0.15
0.95
0.25
0.36
0.13
0.18
2.95
3.05
0.65 BSC
2.95
3.05
5.03
4.78
0.41
0.66
0∞
6∞
0.5250 BSC
TOP VIEW
A1
A2
e
FRONT VIEW
A
α
c
b
L
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, 8L uMAX/uSOP
APPROVAL
DOCUMENT CONTROL NO.
21-0036
16
REV.
J
1
1
______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, SOT23,
Low-Power, Rail-to-Rail I/O Op Amps
N
E
H
INCHES
MILLIMETERS
MAX
MIN
0.053
0.069
0.004
0.010
0.014
0.019
0.007
0.010
0.050 BSC
0.150
0.157
0.228
0.244
0.016
0.050
MAX
MIN
1.35
1.75
0.10
0.25
0.35
0.49
0.19
0.25
1.27 BSC
3.80
4.00
5.80
6.20
0.40
SOICN .EPS
DIM
A
A1
B
C
e
E
H
L
1.27
VARIATIONS:
1
INCHES
TOP VIEW
DIM
D
D
D
MIN
0.189
0.337
0.386
MAX
0.197
0.344
0.394
MILLIMETERS
MIN
4.80
8.55
9.80
MAX
5.00
8.75
10.00
N MS012
8
AA
14
AB
16
AC
D
A
B
e
C
0∞-8∞
A1
L
FRONT VIEW
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, .150" SOIC
APPROVAL
DOCUMENT CONTROL NO.
21-0041
REV.
B
1
1
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely 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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17
© 2002 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)