Maxim MAX4333EUB Single/dual/quad, low-power, single-supply, rail-to-rail i/o op amps with shutdown Datasheet

19-1192; Rev 3; 2/98
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
Applications
Portable/Battery-Powered Equipment
Data-Acquisition Systems
Signal Conditioning
Low-Power, Low-Voltage Applications
____________________________Features
♦ 3MHz Gain-Bandwidth Product
♦ 245µA Quiescent Current per Amplifier
♦ Available in Space-Saving SOT23-5 Package
(MAX4330)
♦ +2.3V to +6.5V Single-Supply Operation
♦ Rail-to-Rail Input Common-Mode Voltage Range
♦ Rail-to-Rail Output Voltage Swing
♦ 250µV Offset Voltage
♦ Low-Power, 9µA (per amp) Shutdown Mode
(MAX4331/MAX4333)
♦ No Phase Reversal for Overdriven Inputs
♦ Capable of Driving 2kΩ Loads
♦ Unity-Gain Stable
Ordering Information
PART
TEMP. RANGE
PINPACKAGE
SOT
TOP MARK
MAX4330EUK-T
MAX4331ESA
MAX4331EUA
MAX4332ESA
MAX4333ESD
MAX4333EUB
MAX4334ESD
-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
5 SOT23-5
8 SO
8 µMAX
8 SO
14 SO
10 µMAX
14 SO
ABAJ
—
—
—
—
—
—
Selector Guide
PART
NO. OF AMPS SHUTDOWN
PIN-PACKAGE
PER PACKAGE
MODE
MAX4330
1
—
MAX4331
1
Yes
MAX4332
2
—
MAX4333
2
Yes
MAX4334
4
—
Pin Configurations
TOP VIEW
5-pin SOT23
8-pin SO/µMAX
8-pin SO
10-pin µMAX,
14-pin SO
OUT 1
VEE 2
5
VCC
4
IN-
MAX4330
14-pin SO
IN+ 3
SOT23-5
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
MAX4330–MAX4334
General Description
The MAX4330–MAX4334 single/dual/quad op amps
combine a wide 3MHz bandwidth, low-power operation,
and excellent DC accuracy with Rail-to-Rail inputs and
outputs. These devices require only 245µA per amplifier,
and operate from either a single +2.3V to +6.5V supply
or dual ±1.15V to ±3.25V supplies. The input commonmode voltage range extends 250mV beyond VEE and
VCC, and the outputs swing rail-to-rail. The MAX4331/
MAX4333 feature a shutdown mode in which the output
goes high impedance and the supply current decreases
to 9µA per amplifier.
Low-power operation combined with rail-to-rail input
common-mode range and output swing makes these
amplifiers ideal for portable/battery-powered equipment
and other low-voltage, single-supply applications.
Although the minimum operating voltage is specified at
2.3V, these devices typically operate down to 2.0V. Low
offset voltage and high speed make these amplifiers
excellent choices for signal-conditioning stages in precision, low-voltage data-acquisition systems. The
MAX4330 is available in the space-saving 5-pin SOT23
package, and the MAX4331/MAX4333 are offered in
a µMAX package.
MAX4330–MAX4334
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC to VEE .....................................................7V
IN_+, IN_-, SHDN Voltage................(VEE - 0.3V) to (VCC + 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
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 5.60mW/°C above +70°C) ..........444mW
14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW
Operating Temperature Ranges
MAX433_C/D .......................................................0°C to +70°C
MAX433_E_ _....................................................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+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
(VCC = +2.3V to +6.5V, VEE = 0V, VCM = 0V, VOUT = (VCC / 2), RL tied to (VCC / 2), V S HDN ≥ 2V, TA = +25°C, unless otherwise noted.)
PARAMETER
Input Offset Voltage
Input Bias Current
Input Offset Current
Differential Input Resistance
Common-Mode Input
Voltage Range
SYMBOL
VOS
CONDITIONS
VCM =
VEE to VCC
TYP
MAX
MAX433_EUA/EUB
±0.65
±1.5
MAX4330EUK
±0.65
±1.5
MAX4331ESA
±0.25
±0.6
MAX4332ESA/MAX4333ESD
±0.25
±0.9
MAX4334ESD
±0.25
±1.0
Output Resistance
Off-Leakage Current
in Shutdown
2
mV
IB
VEE < VCM < VCC
±25
±65
VEE < VCM < VCC
±1
±12
| VIN+ - VIN- | < 1.4V
| VIN+ - VIN- | > 2.5V
2.3
MΩ
2
kΩ
RIN(DIFF)
-0.25
VCM
CMRR
-0.25V <
VCM <
(VCC + 0.25V)
VCC =
2.3V
Power-Supply Rejection Ratio
UNITS
IOS
VCC =
5V
Common-Mode
Rejection Ratio
MIN
PSSR
ROUT
IOUT(SHDN)
VCC = 2.3V to 6.5V
VCC +
0.25
MAX433_EUA/EUB
68
88
MAX4330EUK
67
87
MAX4331ESA
74
93
MAX4332ESA/
MAX4333ESD
71
93
MAX4334ESD
69
92
MAX433_EUA/EUB
65
84
MAX4330EUK
64
82
MAX4331ESA
71
90
MAX4332ESA/
MAX4333ESD
69
90
MAX4334ESD
66
89
MAX433_EUA/EUB
76
88
MAX4330EUK
76
88
MAX4331ESA
79
92
MAX4332ESA/
MAX4333ESD
77
90
MAX4334ESD
75
90
AV = 1
V S HDN < 0.8V, VOUT = 0V to VCC
_______________________________________________________________________________________
nA
V
dB
dB
dB
Ω
0.1
±0.1
nA
±2
µA
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
(VCC = +2.3V to +6.5V, VEE = 0V, VCM = 0V, VOUT = (VCC / 2), RL tied to (VCC / 2), V S HDN ≥ 2V, TA = +25°C, unless otherwise noted.)
PARAMETER
Large-Signal Voltage Gain
Output Voltage Swing
SYMBOL
AVOL
VOUT
Output Short-Circuit Current
ISC
SHDN Logic Threshold
(Note 1)
VIL
VIH
SHDN Input Current
CONDITIONS
MIN
TYP
VOUT = 0.2V to 2.1V, RL = 100kΩ
VCC = 2.3V
VOUT = 0.35V to 1.95V, RL = 2kΩ
VOUT = 0.2V to 4.8V, RL = 100kΩ
VCC = 5V
VOUT = 0.35V to 4.65V, RL = 2kΩ
VCC - VOH
RL = 100kΩ
VOL
VCC - VOH
RL = 2kΩ
VOL
93
78
93
83
112
90
120
95
8
8
100
70
VCC
Quiescent Supply Current
per Amplifier
ICC
Shutdown Supply Current
per Amplifier
ICC(SHDN)
UNITS
dB
30
30
175
150
20
Low (shutdown mode)
High (normal mode)
0.8
2.3
VCC = 5V
VCC = 2.3V
VCC = 5V
VCC = 2.3V
VCM = VOUT = VCC / 2
V S HDN < 0.8V
275
245
17
9
mA
mV
mA
2.0
VEE < V S HDN < VCC
Operating Supply-Voltage
Range
MAX
V
±2
µA
6.5
V
325
290
25
14
µA
µA
DC ELECTRICAL CHARACTERISTICS
(VCC = +2.3V to +6.5V, VEE = 0V, VCM = 0V, VOUT = (VCC / 2), RL tied to (VCC / 2), V S HDN ≥ 2V, TA = -40°C to +85°C, unless
otherwise noted.)
PARAMETER
Input Offset Voltage
SYMBOL
VOS
CONDITIONS
VCM =
VEE to VCC
MIN
TYP
MAX433_EUA
MAX433_EUK/EUB
MAX4331ESA
MAX4332ESA/MAX4333ESD
±3.2
±3.8
±0.7
±1
MAX4334ESD
Offset-Voltage Tempco
Input Bias Current
Input Offset Current
Power-Supply Rejection Ratio
UNITS
mV
±1
∆VOS/∆T
±3
µV/°C
IB
VEE < VCM < VCC
±115
nA
IOS
VEE < VCM < VCC
±15
nA
PSRR
VCC = 2.3V to 6.5V
MAX433_EUA
MAX433_EUK/EUB
MAX4331ESA
72
71
76
MAX4332ESA/
MAX4333ESD
73
MAX4334ESD
Common-Mode Input
Voltage Range
MAX
VCM
dB
71
-0.15
VCC +
0.15
V
_______________________________________________________________________________________
3
MAX4330–MAX4334
DC ELECTRICAL CHARACTERISTICS (continued)
MAX4330–MAX4334
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +2.3V to +6.5V, VEE = 0V, VCM = 0V, VOUT = (VCC / 2), RL tied to (VCC / 2), V S HDN ≥ 2V, TA = -40°C to +85°C, unless
otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
VCC =
5V
Common-Mode
Rejection Ratio
CMRR
-0.25V <
VCM <
(VCC + 0.25V)
VCC =
2.3V
Off-Leakage Current
in Shutdown
IOUT(SHDN)
AVOL
VCC = 5V
RL = 100kΩ
Output Voltage Swing
VOUT
RL = 2kΩ
SHDN Logic Threshold
(Note 1)
63
MAX4330EUK
62
MAX4331ESA
72
MAX4332ESA/
MAX4333ESD
69
MAX4334ESD
67
MAX433_EUA/EUB
58
MAX4330EUK
57
MAX4331ESA
68
MAX4332ESA/
MAX4333ESD
66
MAX4334ESD
65
90
VOUT = 0.35V to 1.95V, RL = 2kΩ
70
VOUT = 0.2V to 4.8V, RL = 100kΩ
90
VOUT = 0.35V to 4.65V, RL = 2kΩ
74
40
40
VCC - VOH
200
VOL
180
VIH
High (normal mode)
0.8
2.0
VEE < V S HDN < VCC
VCC
TA = -40°C to +85°C
Quiescent Supply Current
per Amplifier
ICC
VCM = VOUT = VCC / 2
Shutdown Supply Current
per Amplifier
ICC(SHDN)
V S HDN < 0.8V
2.3
V
µA
6.5
V
350
VCC = 2.3V
330
VCC = 5V
30
VCC = 2.3V
17
_______________________________________________________________________________________
mV
±2
VCC = 5V
Note 1: SHDN logic thresholds are referenced to VEE.
Note 2: The MAX4330EUK is 100% tested at TA = +25°C. All temperature limits are guaranteed by design.
µA
dB
VOL
Low (shutdown mode)
UNITS
dB
VCC - VOH
Operating Supply-Voltage
Range
4
MAX
±5
VOUT = 0.2V to 2.1V, RL = 100kΩ
VIL
SHDN Input Current
MAX433_EUA/EUB
TYP
V SHDN < 0.8V, VOUT = 0V to VCC
VCC = 2.3V
Large-Signal Voltage Gain
MIN
µA
µA
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
MAX4330–MAX4334
AC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = 0V, VCM = 0V, VOUT = (VCC / 2), RL = 10kΩ to (VCC / 2), V S HDN ≥ 2V, CL = 15pF, TA = +25°C, unless
otherwise noted.)
PARAMETER
SYMBOL
Gain-Bandwidth Product
GBWP
Full-Power Bandwidth
FPBW
CONDITIONS
MIN
TYP
VOUT = 4Vp-p
MAX
UNITS
3
MHz
190
kHz
Slew Rate
SR
1.5
V/µs
Phase Margin
PM
55
degrees
10
dB
0.012
%
Gain Margin
GM
Total Harmonic Distortion
THD
Settling Time to 0.01%
f = 10kHz, VOUT = 2Vp-p, AVCL = +1V/V
tS
Input Capacitance
AV = +1V/V, 2V step
CIN
4
µs
3
pF
Input Noise Voltage Density
VNOISE
f = 10kHz
28
nV/√Hz
Input Current Noise Density
INOISE
f = 10kHz
0.26
pA/√Hz
f = 10kHz, MAX4332/MAX4333/MAX4334
-124
dB
AV = 1, no sustained oscillations
Crosstalk
Capacitive Load Stability
Shutdown Time
Enable Time from Shutdown
Power-Up Time
150
pF
t S HDN
0.8
µs
tENABLE
1
µs
tON
5
µs
__________________________________________Typical Operating Characteristics
(VCC = +5V, VEE = 0V, VCM = VCC / 2, V S HDN > 2V, TA = +25°C, unless otherwise noted.)
40
45
20
0
-45
PHASE
10
GAIN (dB)
GAIN
PHASE (DEGREES)
GAIN (dB)
135
30
72
GAIN
20
36
0
0
-36
PHASE
-20
1k
10k
100k
1M
FREQUENCY (Hz)
10M
-180
100M
AV = +1
-20
-40
-60
-72
-108
-135
-10
0
180
144
108
-90
0
-20
100
AV = +1000
90
40
MAX4330/34-TOC02
60
MAX4330/34-TOC03
50
180
PSRR (dB)
AV = +1000
PHASE (DEGREES)
MAX4330/34-TOC01
60
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
GAIN AND PHASE
vs. FREQUENCY (CL = 150pF)
GAIN AND PHASE
vs. FREQUENCY (NO LOAD)
-80
-144
-40
100
1k
10k
100k
1M
FREQUENCY (Hz)
10M
-180
100M
-100
10
100
1k
10k
100k
1M 10M 100M
FREQUENCY (Hz)
_______________________________________________________________________________________
5
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = 0V, VCM = VCC / 2, V S HDN > 2V, TA = +25°C, unless otherwise noted.)
100
330
310
ICC (µA)
1
SHDN = 0V
270
250
VCC = 2.3V
230
15
VCC = 2.3V
210
0.1
VCC = 6.5V
20
VCC = 6.5V
290
10
25
ICC (µA)
AV = +1
MAX4330/34-TOC05
350
MAX4330/34-TOC04
1k
OUTPUT IMPEDANCE (Ω)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
SUPPLY CURRENT
vs. TEMPERATURE
MAX4330/34-TOC06
OUTPUT IMPEDANCE
vs. FREQUENCY
10
190
170
150
10k 100k
1M
FREQUENCY (Hz)
10M
100M
5
-60
OUTPUT LEAKAGE CURRENT
vs. TEMPERATURE
MAX4330/34-TOC07
1000
800
600
400
OUT SHORT
TO VCC
200
VCC = 2.3V TO 6.5V
20
40
60
80 100
-60 -40 -20
1000
30
500
0
-500
60
80
100
30
VCC = 2.7V, VCM = VCC
0
VCC = 2.3V, VCM = VEE
-10
80
0
-10
0
100
VCC = 6.5V, RL = 2kΩ
150
VCC = 2.3V, RL = 2kΩ
100
50
VCC = 6.5V, VCM = VEE
-40
-40
-20
0
20
60
TEMPERATURE (°C)
80
100
5
6
7
RL TO VCC
VCC = 6.5V
RL = 2kΩ
80
VCC = 2.3V
RL = 2kΩ
60
40
VCC = 6.5V
RL = 100kΩ
VCC = 2.3V
RL = 100kΩ
0
0
40
4
100
20
VCC = 6.5V, RL = 100kΩ
-30
3
120
VCC = 2.3V, RL = 100kΩ
-20
2
OUTPUT SWING LOW
vs. TEMPERATURE
RL TO VEE
200
1
COMMON-MODE VOLTAGE (V)
250
VCC - VOUT (mV)
20
10
0
20 40 60
TEMPERATURE (°C)
OUTPUT SWING HIGH
vs. TEMPERATURE
MAX4330-34 TOC8a
40
10
-30
-60 -40 -20
INPUT BIAS CURRENT
vs. TEMPERATURE
VCC = 6.5V, VCM = VCC
VCC = 6.5V
VCC = 2.3V
20
-20
TEMPERATURE (°C)
50
100
SO PACKAGE
VOUT - VEE (mV)
40
80
40
MAX4330/34-TOC09
20
60
INPUT BIAS CURRENT
vs. COMMON-MODE VOLTAGE
-1500
0
40
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
-1000
-60 -40 -20
20
TEMPERATURE (°C)
SOT/µMAX PACKAGES
-200
0
TEMPERATURE (°C)
1500
0
6
0
INPUT BIAS CURRENT (nA)
AV = OPEN LOOP
SHDN = 0V
OUT SHORT VCC = 6.5V
TO VEE VCC = 2.3V
INPUT OFFSET VOLTAGE (µV)
OUTPUT LEAKAGE CURRENT (pA)
1200
-40 -20
MAX4330-34/TOC08
1k
MAX4330/34-TOC07a
100
MAX4330/34-TOC12
0.01
INPUT BIAS CURRENT (nA)
MAX4330–MAX4334
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
-60
-40 -20
0 20
40 60
TEMPERATURE (°C)
80
100
-60 -40
-20
0
20
40
TEMPERATURE (°C)
_______________________________________________________________________________________
60
80
100
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
(VCC = +5V, VEE = 0V, VCM = VCC / 2, V S HDN > 2V, TA = +25°C, unless otherwise noted.)
113
-90
103
106
VCM = -0.25V
TO +5.25V
88
-130
83
-140
78
80
100
RL = 2kΩ
RL = 100kΩ
86
0.3
0.4
0.5
115
VOUT(p-p) = VCC - 1V
110
0.4
GAIN (dB)
110
RL = 2kΩ
RL TO VCC
100
VCC = 2.3V
RL TO VEE
95
90
RL TO VCC
0.5
0.6
85
0
0.1
0.2
0.3
0.4
0.5
OUTPUT VOLTAGE: EITHER SUPPLY (V)
OUTPUT VOLTAGE: EITHER SUPPLY (V)
LARGE-SIGNAL GAIN
vs. TEMPERATURE (RL = 100kΩ)
MINIMUM OPERATING VOLTAGE
vs. TEMPERATURE
125
2.00
1.95
VCC (V)
1.80
1.75
VCC = 2.3V
RL TO VCC OR VEE
0
20 40 60
TEMPERATURE (°C)
80
100
TOTAL HARMONIC DISTORTION
AND NOISE vs. FREQUENCY
1.85
120
-60 -40 -20
1
THD + NOISE (%)
1.90
VCC = 6.5V
RL TO VCC
0.6
MAX4330/34-TOC18
VOUT(p-p) =
VCC - 1V
MAX4330/34-TOC17
VCC = 6.5V
RL TO VEE
RL TO VEE
VCC = 6.5V
105
RL = 10kΩ
115
0.6
MAX4330/34-TOC19
0.3
0.5
LARGE-SIGNAL GAIN
vs. TEMPERATURE (RL = 2kΩ)
90
0.2
0.4
100
80
0.1
0.3
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
(VCC = 6.5V, RL TO VEE)
95
0
0.2
OUTPUT VOLTAGE: EITHER SUPPLY (V)
105
RL = 2kΩ
0.1
OUTPUT VOLTAGE: EITHER SUPPLY (V)
RL = 100kΩ
90
115
0
0.6
125
GAIN (dB)
GAIN (dB)
0.2
120
RL = 10kΩ
100
130
0.1
130
120
110
94
90
0
MAX4330/34-TOC16
130
RL = 2kΩ
98
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
(VCC = 6.5V, RL TO VCC)
140
RL = 10kΩ
102
93
-120
0
20 40 60
TEMPERATURE (°C)
RL = 10kΩ
98
MAX4330/34-TOC15
-110
GAIN (dB)
110
GAIN (dB)
108
-100
RL = 100kΩ
114
-80
-60 -40 -20
GAIN (dB)
118
MAX4330/34-TOC10
RL = 100kΩ
MAX4330/34-TOC14
-70
MAX4330/34-TOC13
118
MAX4330/34-TOC11
COMMON-MODE REJECTION (dB)
-60
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
(VCC = 2.3V, RL TO VEE)
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
(VCC = 2.3V, RL TO VCC)
COMMON-MODE REJECTION
vs. TEMPERATURE
AV = +1
2Vp-p SIGNAL
500kHz LOWPASS FILTER
RL = 10kΩ TO VCC / 2
0.1
0.01
1.70
1.65
110
1.60
-60 -40 -20
0
20
40
TEMPERATURE (°C)
60
80
100
0.001
-60 -40 -20
0
20
40
TEMPERATURE (°C)
60
80
100
1
10
100
1k
10k
100k
FREQUENCY (Hz)
_______________________________________________________________________________________
7
MAX4330–MAX4334
____________________________Typical Operating Characteristics (continued)
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = 0V, VCM = VCC / 2, V S HDN > 2V, TA = +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION
AND NOISE vs. PEAK-TO-PEAK
SIGNAL AMPLITUDE
CROSSTALK vs. FREQUENCY
0.1
RL = 2kΩ
RL = 10kΩ
0.01
120
110
100
RL = 100kΩ
80
4.0
4.2
4.4
4.6
4.8
4
RL TO VEE
VOUT = VCC / 2
0
1
5.0
UNSTABLE
REGION
6
2
90
0.001
MAX4330/34-TOC21
8
LOAD RESISTANCE (kΩ)
130
CROSSTALK (dB)
AV = +1
1kHz SINE WAVE
500kHz LOWPASS FILTER
RL TO VCC / 2
CAPACITIVE LOAD STABILITY
10
MAX4330/34-TOC22
140
MAX4330/34-TOC20
1
THD + NOISE (%)
10
100
1000
10000
FREQUENCY (kHz)
PEAK-TO-PEAK SIGNAL AMPLITUDE (V)
0
200
600
400
800
LOAD CAPACITANCE (pF)
SMALL-SIGNAL TRANSIENT RESPONSE
(INVERTING)
SMALL-SIGNAL TRANSIENT RESPONSE
(NONINVERTING)
MAX4330/34-TOC23
MAX4330/34-TOC22
AV = -1
AV = +1
IN
VOLTAGE (50mV/div)
VOLTAGE (50mV/div)
IN
OUT
OUT
TIME (200ns/div)
TIME (200ns/div)
LARGE-SIGNAL TRANSIENT RESPONSE
(NONINVERTING)
LARGE-SIGNAL TRANSIENT RESPONSE
(INVERTING)
MAX4330/34-TOC25
MAX4330/34-TOC24
IN
VOLTAGE (2V/div)
IN
VOLTAGE (2V/div)
MAX4330–MAX4334
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
OUT
OUT
TIME (5µs/div)
8
TIME (5µs/div)
_______________________________________________________________________________________
1000
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
PIN
MAX4333
10-Pin
14-Pin SO
µMAX
—
—
MAX4330
MAX4331
MAX4332
1
6
—
2
4
4
4
3
3
—
4
2
5
MAX4334
NAME
FUNCTION
—
OUT
Output
4
11
VEE
Negative Supply. Ground for singlesupply operation.
—
—
—
IN+
Noninverting Input
—
—
—
—
IN-
Inverting Input
7
8
10
14
4
VCC
Positive Supply
—
1, 5
—
—
5, 7, 8, 10
—
N.C.
No Connection. Not internally
connected.
—
—
1, 7
1, 9
1, 13
1, 7
OUT1,
OUT2
Outputs for Amplifiers 1 and 2
—
—
3, 5
3, 7
3, 11
3, 5
IN1+,
IN2+
Noninverting Inputs to Amplifiers
1 and 2
—
—
2, 6
2, 8
2, 12
2, 6
IN1-,
IN2-
Inverting Inputs to Amplifiers
1 and 2
—
8
—
—
—
—
SHDN
Shutdown Input for Amplifier. Drive
low for shutdown mode. Drive
high or connect to VCC for normal
operation.
Shutdown for Amplifiers 1 and 2.
Drive low for shutdown mode.
Drive high or connect to VCC for
normal operation.
—
—
—
5, 6
6, 9
—
SHDN1,
SHDN2
—
—
—
—
—
8, 14
OUT3,
OUT4
Outputs for Amplifiers 3 and 4
—
—
—
—
—
9, 13
IN3-,
IN4-
Inverting Inputs for Amplifiers
3 and 4
—
—
—
—
—
10, 12
IN3+,
IN4+
Noninverting Inputs for Amplifiers
3 and 4
_______________________________________________________________________________________
9
MAX4330–MAX4334
Pin Description
MAX4330–MAX4334
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
_______________Detailed Description
Rail-to-Rail Input Stage
The MAX4330–MAX4334 have rail-to-rail input and output stages that are specifically designed for lowvoltage, single-supply operation. The input stage consists of separate NPN and PNP differential stages,
which operate together to provide a common-mode
range extending to 0.25V beyond both supply rails. The
crossover region, which occurs halfway between VCC
and VEE, is extended to minimize degradation in CMRR
caused by mismatched input pairs. The input offset voltage is typically 250µV. Low offset voltage, high bandwidth, rail-to-rail common-mode input range, and
rail-to-rail outputs make this family of op amps an excellent choice for precision, low-voltage data-acquisition
systems.
Since the input stage consists of NPN and PNP pairs,
the input bias current changes polarity as the input voltage passes through the crossover region. Match the
effective impedance seen by each input to reduce the
offset error due to input bias currents flowing through
external source impedances (Figures 1a and 1b). The
combination of high source impedance with input
capacitance (amplifier input capacitance plus stray
capacitance) creates a parasitic pole that produces an
underdamped signal response. Reducing input capacitance or placing a small capacitor across the feedback
resistor improves response.
The MAX4330–MAX4334’s inputs are protected from
large differential input voltages by internal 1kΩ series
resistors and back-to-back triple diode stacks across
the inputs (Figure 2). For differential input voltages
(much less than 1.8V), input resistance is typically
2.3MΩ. For differential input voltages greater than 1.8V,
input resistance is around 2kΩ, and the input bias current can be approximated by the following equation:
IBIAS = (VDIFF - 1.8V) / 2kΩ
In the region where the differential input voltage
approaches 1.8V, input resistance decreases exponentially from 2.3MΩ to 2kΩ as the diode block begins conducting. Inversely, the bias current increases with the
same curve.
10
MAX4330
MAX4331
MAX4332
MAX4333
MAX4334
R3
R3 = R1
R2
R1
R2
Figure 1a. Reducing Offset Error Due to Bias Current
(Noninverting)
MAX4330
MAX4331
MAX4332
MAX4333
MAX4334
R3
R3 = R1
R2
R1
R2
Figure 1b. Reducing Offset Error Due to Bias Current
(Inverting)
______________________________________________________________________________________
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
MAX4330–MAX4334
1k
1k
Figure 2. Input Protection Circuit
RISO = 0Ω, AV = +1
CL = 510pF
IN
1V/div
OUT
1V/div
20µs/div
VCC = 3V, RL = 2kΩ TO VCC / 2
Figure 3. Rail-to-Rail Input/Output Voltage Range
Rail-to-Rail Output Stage
The MAX4330–MAX4334 output stage can drive up to a
2kΩ load and still typically swing within 125mV of the
rails. Figure 3 shows the output voltage swing of a
MAX4331 configured as a unity-gain buffer. The operating voltage is a single +3V supply, and the input voltage is 3Vp-p. The output swings to within 70mV of VEE
and 100mV of V CC , even with the maximum load
applied (2kΩ to mid-supply).
IN
50mV/div
OUT
50mV/div
2µs/div
VCC = 3V, RL = 100kΩ
Figure 4. Small-Signal Transient Response with Excessive
Capacitive Load
Driving a capacitive load can cause instability in many
op amps, especially those with low quiescent current.
The MAX4330–MAX4334 are stable for capacitive loads
up to 150pF. The Capacitive Load Stability graph in the
Typical Operating Characteristics gives the stable
operating region for capacitive vs. resistive loads.
Figures 4 and 5 show the response of the MAX4331
with an excessive capacitive load, compared with the
response when a series resistor is added between the
output and the capacitive load. The resistor improves
the circuit’s response by isolating the load capacitance
from the op amp’s output (Figure 6).
______________________________________________________________________________________
11
MAX4330–MAX4334
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
AV = +1, CL = 510pF
RISO = 39Ω
50mV/div
IN
RISO
50mV/div
OUT
CL
MAX4330
MAX4331
MAX4332
MAX4333
MAX4334
2µs/div
Figure 5. Small-Signal Transient Response with Excessive
Capacitive Load and Isolation Resistor
MAX4330
MAX4331
MAX4332
MAX4333
MAX4334
VCC
0V TO +2.7V STEP
FOR POWER-UP
TEST, +2.7V STEP
FOR SHUTDOWN- 2k
ENABLE TEST
0V TO +2.7V
STEP FOR
SHUTDOWN
TEST
1V/div
OUT
500mV/div
10k
100Ω
SUPPLY-CURRENT
MONITORING POINT
5µs/div
Figure 8. Power-Up/Down Output Voltage
Figure 7. Power-Up/Shutdown Test Circuit
__________Applications Information
Power-Up
The MAX4330–MAX4334 outputs typically settle within
5µs after power-up. Using the test circuit of Figure 7,
Figures 8 and 9 show the output voltage and supply
current on power-up and power-down.
12
VCC
VOUT
SHDN
2k
Figure 6. Capacitive-Load-Driving Circuit
Shutdown Mode
The MAX4331/MAX4333 feature a low-power shutdown
mode. When the shutdown pin (SHDN) is pulled low, the
supply current drops to 9µA per amplifier (typical), the
amplifier is disabled, and the outputs enter a highimpedance state. Pulling SHDN high or leaving it floating enables the amplifier. Figures 10 and 11 show the
MAX4331/MAX4333’s output voltage and supply-current
responses to a shutdown pulse.
______________________________________________________________________________________
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
1V/div
ICC
100µA/div
Figure 9. Power-Up/Down Supply Current
Do not three-state SHDN. Due to the output leakage
currents of three-state devices and the small internal
pull-up current for SHDN, three-stating this pin could
result in indeterminate logic levels, and could adversely
affect op-amp operation.
1V/div
SHDN
500mV/div
OUT
5µs/div
MAX4330–MAX4334
VCC
5µs/div
Figure 10. Shutdown Output Voltage Enable/Disable
1V/div
SHDN
The logic threshold for SHDN is always referred to VEE,
not GND. When using dual supplies, pull SHDN to VEE
to place the op amp in shutdown mode.
Power Supplies and Layout
The MAX4330–MAX4334 operate from a single +2.3V
to +6.5V power supply, or from dual ±1.15V to ±3.25V
supplies. For single-supply operation, bypass the
power supply with a 0.1µF capacitor to ground (VEE).
For dual supplies, bypass both VCC and VEE with their
own set of capacitors to ground.
Good layout technique helps optimize performance 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.
100µA/div
ICC
5µs/div
Figure 11. Shutdown Enable/Disable Supply Current
______________________________________________________________________________________
13
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
MAX4330–MAX4334
Pin Configurations (continued)
TOP VIEW
N.C.
1
IN-
2
OUT1
1
VCC
IN1-
2
8
SHDN
7
MAX4331
8
VCC
7
OUT2
MAX4332
IN+
3
6
OUT
IN1+
3
6
IN2-
VEE
4
5
N.C.
VEE
4
5
IN2+
SO/µMAX
SO
OUT1
1
IN1-
2
IN1+
3
VEE
SHDN1
10 VCC
9
OUT2
8
IN2-
4
7
IN2+
5
6
SHDN2
MAX4333
µMAX
OUT1
1
14 VCC
OUT1
1
14 OUT4
IN1-
2
13 OUT2
IN1-
2
13 IN4-
IN1+
3
12 IN2-
IN1+
3
VEE
4
11 IN2+
VCC
4
N.C.
5
10 N.C.
IN2+
5
SHDN1
6
9 SHDN2
IN2-
6
9
IN3-
N.C.
7
8 N.C.
OUT2
7
8
OUT3
MAX4333
SO
14
12 IN4+
MAX4334
11 VEE
10 IN3+
SO
______________________________________________________________________________________
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
MAX4330/MAX4331
TRANSISTOR COUNT: 199
SUBSTRATE CONNECTED TO VEE
MAX4332/MAX4333
TRANSISTOR COUNT: 398
SUBSTRATE CONNECTED TO VEE
MAX4334
TRANSISTOR COUNT: 796
SUBSTRATE CONNECTED TO VEE
Tape-and-Reel Information
D
P0
W
P2
B0
t
D1
F
P
NOTE: DIMENSIONS ARE IN MM.
AND FOLLOW EIA481-1 STANDARD.
K0
A0
3.988
±0.102
40.005
±0.203
P2
2.007
±0.051
t
0.254
±0.127
W
8.001
+0.305
-0.102
A0
3.200
±0.102
E
1.753
±0.102
P0
B0
3.099
±0.102
F
3.505
±0.051
P010
D
1.499
+0.102
+0.000
K0
1.397
±0.102
3.988
±0.102
0.991
+0.254
+0.000
P
D1
______________________________________________________________________________________
5 SOT23-5
E
15
MAX4330–MAX4334
Chip Information
SOT5L.EPS
________________________________________________________Package Information
8LUMAXD.EPS
MAX4330–MAX4334
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
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.
16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 1998 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.