OPA2234P [BB]
Low Power, Precision SINGLE-SUPPLY OPERATIONAL AMPLIFIERS; 低功耗，精密单电源运算放大器
| 型号： | OPA2234P |
| 厂家： | 
BURR-BROWN CORPORATION |
| 描述： | Low Power, Precision SINGLE-SUPPLY OPERATIONAL AMPLIFIERS |
| 文件： | 总9页 (文件大小：266K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
OPA2234
OPA234
OPA4234
OPA234
OPA2234
OPA4234
OPA234
OPA2234
OPA4234
OPA234
For most current data sheet and other product
information, visit www.burr-brown.com
Low Power, Precision
SINGLE-SUPPLY OPERATIONAL AMPLIFIERS
FEATURES
OPA234
● WIDE SUPPLY RANGE:
Offset Trim
1
2
3
4
8
7
6
5
NC
Single Supply: VS = +2.7V to +36V
Dual Supply: VS = ±1.35V to ±18V
–In
+In
V–
V+
Output
Offset Trim
● GUARANTEED PERFORMANCE:
+2.7V, +5V, and ±15V
● LOW QUIESCENT CURRENT: 250µA/amp
● LOW INPUT BIAS CURRENT: 25nA max
● LOW OFFSET VOLTAGE: 100µV max
● HIGH CMRR, PSRR, and AOL
8-Pin DIP, SO-8, MSOP-8
● SINGLE, DUAL, and QUAD VERSIONS
OPA2234
DESCRIPTION
Out A
–In A
+In A
V–
1
8
7
6
5
V+
The OPA234 series low cost op amps are ideal for
single supply, low voltage, low power applications. The
series provides lower quiescent current than older
“1013”-type products and comes in current industry-
standard packages and pinouts. The combination of low
offset voltage, high common-mode rejection, high power
supply rejection, and a wide supply range provides
excellent accuracy and versatility. Single, dual, and
quad versions have identical specifications for maxi-
mum design flexibility. These general purpose op amps
are ideal for portable and battery powered applications.
A
2
3
4
Out B
–In B
+In B
B
8-Pin DIP, SO-8
OPA4234
OPA234 series op amps operate from either single or
dual supplies. In single supply operation, the input com-
mon-mode range extends below ground and the output
can swing to within 50mV of ground. Excellent phase
margin makes the OPA234 series ideal for demanding
applications, including high load capacitance. Dual and
quad designs feature completely independent circuitry
for lowest crosstalk and freedom from interaction.
Out A
–In A
+In A
V+
1
2
3
4
5
6
7
14 Out D
13 –In D
12 +In D
11 V–
A
B
D
+In B
–In B
Out B
10 +In C
C
Single version packages are DIP-8, SO-8 surface-mount,
and a space-saving MSOP-8 surface-mount. Dual pack-
ages are DIP-8 and SO-8 surface-mount. Quad pack-
ages are DIP-14 and SO-14 surface-mount. All are
specified for –40°C to +85°C operation.
9
8
–In C
Out C
14-Pin DIP
SO-14
International Airport Industrial Park
•
Mailing Address: PO Box 11400, Tucson, AZ 85734
•
Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706
FAX: (520) 889-1510
•
Tel: (520) 746-1111
Twx: 910-952-1111 Internet: http://www.burr-brown.com/
•
•
Cable: BBRCORP Telex: 066-6491
•
•
•
Immediate Product Info: (800) 548-6132
PDS-1318B
© 1996 Burr-Brown Corporation
Printed in U.S.A., May, 2000
SPECIFICATIONS: VS = +5V
At TA = 25°C, VS = +5V, RL = 10kΩ connected to VS/2 and VOUT = VS/2, unless otherwise noted.
OPA234PA, UA, EA
OPA2234PA, UA
OPA234P, U, E
OPA2234P, U
OPA4234PA, UA, U
PARAMETER
CONDITION
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
OPA234E, EA
VOS
VCM = 2.5V
±40
±100
±0.5
3
0.2
0.3
±100
±150
±3
✻
✻
✻
✻
✻
✻
±250
±350
✻
µV
µV
µV/°C
µV/V
µV/mo
µV/V
vs Temperature(1)
vs Power Supply
vs Time
dVOS/dT
PSRR
Operating Temperature Range
S = +2.7V to +30V, VCM = 1.7V
V
10
20
Channel Separation (Dual, Quad)
INPUT BIAS CURRENT
Input Bias Current(2)
Input Offset Current
IB
IOS
VCM = 2.5V
VCM = 2.5V
–15
±1
–30
±5
✻
✻
–50
✻
nA
nA
NOISE
f = 1kHz
Input Voltage Noise Density
Current Noise Density
vn
in
25
80
✻
✻
nV/√Hz
fA/√Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection
–0.1
91
(V+) –1
✻
86
✻
V
dB
CMRR
VCM = –0.1V to 4V
106
✻
INPUT IMPEDANCE
Differential
Common-Mode
107 || 5
1010 || 6
✻
✻
Ω || pF
Ω || pF
V
CM = 2.5V
OPEN-LOOP GAIN
Open-Loop Voltage Gain
V
O = 0.25V to 4V
RL = 10kΩ
AOL
108
86
120
96
100
86
✻
✻
dB
dB
RL = 2kΩ
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time: 0.1%
0.01%
GBW
SR
CL = 100pF
0.35
0.2
15
25
16
✻
✻
✻
✻
✻
MHz
V/µs
µs
µs
µs
G = 1, 3V Step, CL = 100pF
G = 1, 3V Step, CL = 100pF
(VIN) (Gain) = VS
Overload Recovery Time
OUTPUT
Voltage Output: Positive
Negative
RL = 10kΩ to VS/2
RL = 10kΩ to VS/2
RL = 10kΩ to Ground
RL = 10kΩ to Ground
(V+) –1 (V+) –0.65
0.25 0.05
(V+) –1 (V+) –0.65
✻
✻
✻
✻
✻
✻
✻
✻
✻
✻
V
V
V
V
mA
pF
Positive
Negative
0.1
0.05
±11
Short-Circuit Current
Capacitive Load Drive (Stable Operation)(3)
ISC
G = +1
1000
POWER SUPPLY
Specified Operating Voltage
Operating Voltage Range
Quiescent Current (per amplifier)
+5
✻
✻
V
V
µA
+2.7
+36
300
✻
✻
✻
IQ
IO = 0
250
TEMPERATURE RANGE
Specified Range
Operating Range
Storage
–40
–40
–55
+85
+125
+125
✻
✻
✻
✻
✻
✻
°C
°C
°C
Thermal Resistance
8-Pin DIP
SO-8 Surface-Mount
MSOP-8 Surface-Mount
14-Pin DIP
θJA
100
150
220
80
✻
✻
✻
✻
✻
°C/W
°C/W
°C/W
°C/W
°C/W
SO-14 Surface-Mount
110
✻ Specifications same as OPA234P,U,E.
NOTES: (1) Guaranteed by wafer-level test to 95% confidence level. (2) Positive conventional current flows into the input terminals. (3) See “Small-Signal Overshoot
vs Load Capacitance” typical curve.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
2
OPA234, 2234, 4234
SPECIFICATIONS: VS = +2.7V
At TA = 25°C, VS = +2.7V, RL = 10kΩ connected to VS/2 and VOUT = VS/2, unless otherwise noted.
OPA234PA, UA, EA
OPA2234PA, UA
OPA234P, U, E
OPA2234P, U
OPA4234PA, UA, U
PARAMETER
CONDITION
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
OPA234E, EA
VOS
VCM = 1.35V
±40
±100
±0.5
3
0.2
0.3
±100
±150
±3
✻
✻
✻
✻
✻
✻
±250
±350
✻
µV
µV
µV/°C
µV/V
µV/mo
µV/V
vs Temperature(1)
vs Power Supply
vs Time
dVOS/dT
PSRR
Operating Temperature Range
S = +2.7V to +30V, VCM = 1.7V
V
10
20
Channel Separation (Dual, Quad)
INPUT BIAS CURRENT
Input Bias Current(2)
Input Offset Current
IB
IOS
VCM = 1.35V
VCM = 1.35V
–15
±1
–30
±5
✻
✻
–50
✻
nA
n
NOISE
f = 1kHz
Input Voltage Noise Density
Current Noise Density
vn
in
25
80
✻
✻
nV/√Hz
fA/√Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection
–0.1
91
(V+) –1
✻
86
✻
V
dB
CMRR
VCM = –0.1V to 1.7V
106
✻
INPUT IMPEDANCE
Differential
Common-Mode
107 || 5
1010 || 6
✻
✻
Ω || pF
Ω || pF
VCM = 1.35V
OPEN-LOOP GAIN
Open-Loop Voltage Gain
V
O = 0.25V to 1.7V
RL = 10kΩ
AOL
108
86
125
96
100
86
✻
✻
dB
dB
RL = 2kΩ
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time: 0.1%
0.01%
GBW
SR
CL = 100pF
0.35
0.2
6
16
8
✻
✻
✻
✻
✻
MHz
V/µs
µs
µs
µs
G = 1, 1V Step, CL = 100pF
G = 1, 1V Step, CL = 100pF
(VIN) (Gain) = VS
Overload Recovery Time
OUTPUT
Voltage Output: Positive
Negative
RL = 10kΩ to VS/2
RL = 10kΩ to VS/2
RL = 10kΩ to Ground
RL = 10kΩ to Ground
(V+) –1 (V+) –0.6
0.25 0.05
(V+) –1 (V+) –0.65
✻
✻
✻
✻
✻
✻
✻
✻
✻
✻
V
V
V
V
mA
pF
Positive
Negative
0.1
0.05
±8
Short-Circuit Current
Capacitive Load Drive (Stable Operation)(3)
ISC
G = +1
1000
POWER SUPPLY
Specified Operating Voltage
Operating Voltage Range
Quiescent Current (per amplifier)
+2.7
250
✻
✻
V
V
µA
+2.7
+36
300
✻
✻
✻
IQ
IO = 0
TEMPERATURE RANGE
Specified Range
Operating Range
Storage
–40
–40
–55
+85
+125
+125
✻
✻
✻
✻
✻
✻
°C
°C
°C
Thermal Resistance
8-Pin DIP
SO-8 Surface-Mount
MSOP-8 Surface-Mount
14-Pin DIP
θJA
100
150
220
80
✻
✻
✻
✻
✻
°C/W
°C/W
°C/W
°C/W
°C/W
SO-14 Surface-Mount
110
✻ Specifications same as OPA234P,U,E.
NOTES: (1) Guaranteed by wafer-level test to 95% confidence level. (2) Positive conventional current flows into the input terminals. (3) See “Small-Signal Overshoot
vs Load Capacitance” typical curve.
®
3
OPA234, 2234, 4234
SPECIFICATIONS: VS = ±15V
At TA = 25°C, VS = ±15V, RL = 10kΩ connected to ground, unless otherwise noted.
OPA234PA, UA, EA
OPA2234PA, UA
OPA4234PA, UA, U
OPA234P, U, E
OPA2234P, U
PARAMETER
CONDITION
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
OPA4234U Model
vs Temperature(1)
vs Power Supply
VOS
VCM = 0V
±70
±250
✻
±70
✻
✻
✻
±500
±250
✻
µV
µV
µV/°C
µV/V
µV/mo
µV/V
dVOS/dT
PSRR
Operating Temperature Range
S = ±1.35V to ±18V, VCM = 0V
±0.5
3
0.2
0.3
±5
10
V
20
vs Time
Channel Separation (Dual, Quad)
✻
INPUT BIAS CURRENT
Input Bias Current(2)
Input Offset Current
IB
IOS
VCM = 0V
VCM = 0V
–12
±1
–25
±5
✻
✻
–50
✻
nA
nA
NOISE
f = 1kHz
Input Voltage Noise Density
Current Noise Density
vn
in
25
80
✻
✻
nV/√Hz
fA/√Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection
(V–)
91
(V+) –1
✻
86
✻
V
dB
CMRR
VCM = –15V to 14V
106
✻
INPUT IMPEDANCE
Differential
Common-Mode
107 || 5
1010 || 6
✻
✻
Ω || pF
Ω || pF
V
CM = 0V
OPEN-LOOP GAIN
Open-Loop Voltage Gain
AOL
VO = –14.5V to 14V
CL = 100pF
110
120
100
✻
dB
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time: 0.1%
0.01%
GBW
SR
0.35
0.2
41
47
22
✻
✻
✻
✻
✻
MHz
V/µs
µs
µs
µs
G = 1, 10V Step, CL = 100pF
G = 1, 10V Step, CL = 100pF
(VIN) (Gain) = VS
Overload Recovery Time
OUTPUT
Voltage Output: Positive
Negative
Short-Circuit Current
(V+) –1 (V+) –0.7
(V–) +0.5 (V–) +0.15
✻
✻
✻
✻
✻
✻
V
V
mA
pF
ISC
±22
1000
Capacitive Load Drive (Stable Operation)(3)
G = +1
POWER SUPPLY
Specified Operating Voltage
Operating Voltage Range
Quiescent Current (per amplifier)
±15
±1.35
✻
✻
V
V
µA
±18
±350
✻
✻
✻
IQ
IO = 0
±275
TEMPERATURE RANGE
Specified Range
Operating Range
Storage
–40
–40
–55
+85
+125
+125
✻
✻
✻
✻
✻
✻
°C
°C
°C
Thermal Resistance
8-Pin DIP
SO-8 Surface-Mount
MSOP-8 Surface-Mount
14-Pin DIP
θJA
100
150
220
80
✻
✻
✻
✻
✻
°C/W
°C/W
°C/W
°C/W
°C/W
SO-14 Surface-Mount
110
✻ Specifications same as OPA234P,U,E.
NOTES: (1) Guaranteed by wafer-level test to 95% confidence level. (2) Positive conventional current flows into the input terminals. (3) See “Small-Signal Overshoot
vs Load Capacitance” typical curve.
®
4
OPA234, 2234, 4234
ABSOLUTE MAXIMUM RATINGS
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
Supply Voltage, V+ to V–.................................................................... 36V
Input Voltage .....................................................(V–) –0.7V to (V+) +0.7V
Output Short-Circuit(1) .............................................................. Continuous
Operating Temperature ..................................................–40°C to +125°C
Storage Temperature .....................................................–55°C to +125°C
Junction Temperature ...................................................................... 150°C
Lead Temperature (soldering, 10s)................................................. 300°C
NOTE: (1) Short-circuit to ground, one amplifier per package.
ESD damage can range from subtle performance degrada-
tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.
PACKAGE/ORDERING INFORMATION
PACKAGE
SPECIFIED
DRAWING
NUMBER
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER(1)
TRANSPORT
MEDIA
PRODUCT
PACKAGE
Single
OPA234EA
"
OPA234E
"
OPA234PA
OPA234P
OPA234UA
OPA234U
MSOP-8 Surface-Mount
337
"
–40°C to +85°C
A34(2)
"
OPA234EA/250
OPA234EA/2K5
OPA234E/250
OPA234E/2K5
OPA234PA
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Rails
"
"
MSOP-8 Surface-Mount
337
"
–40°C to +85°C
A34(2)
"
"
"
Plastic DIP-8
006
"
182
"
–40°C to +85°C
OPA234PA
OPA234P
OPA234UA
OPA234U
"
"
OPA234P
Rails
SO-8 Surface-Mount
–40°C to +85°C
OPA234UA
Rails
"
"
OPA234U
Rails
Dual
OPA2234PA
OPA2234P
OPA2234UA
OPA2234U
Plastic DIP-8
006
"
182
"
–40°C to +85°C
OPA2234PA
OPA2234P
OPA2234UA
OPA2234U
OPA2234PA
OPA2234P
OPA2234UA
OPA2234U
Rails
Rails
Rails
Rails
"
"
SO-8 Surface-Mount
–40°C to +85°C
"
"
Quad
OPA4234PA
OPA4234P
OPA4234UA
OPA4234U
Plastic DIP-8
006
"
182
"
–40°C to +85°C
OPA4234PA
OPA4234P
OPA4234UA
OPA4234U
OPA4234PA
OPA4234P
OPA4234UA
OPA4234U
Rails
Rails
Rails
Rails
"
"
SO-8 Surface-Mount
–40°C to +85°C
"
"
NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces
of “OPA234E//2K5” will get a single 2500-piece Tape and Reel. (2) The grade will be marked on the Reel.
®
5
OPA234, 2234, 4234
TYPICAL PERFORMANCE CURVES
At TA = +25°C and RL = 10kΩ unless otherwise noted.
POWER SUPPLY AND COMMON-MODE REJECTION
vs FREQUENCY
OPEN-LOOP GAIN/PHASE vs FREQUENCY
140
120
110
100
90
80
70
60
50
40
30
20
10
0
VS = +2.7V
+PSR
0
120
100
80
CL = 100pF
VS = +5V
±15V
–30
–60
–90
–120
–150
–180
CMR
φ
60
40
VS = +2.7V, +5V
or ±15V
VO = 0.25V
VS
20
G
V
V
S = +2.7V or +5V
S = ±15V
VO
=
0
2
–PSR
–20
0.1
1
10
100
1k
10k
100k
1M
10
100
1k
10k
100k
1M
Frequency (Hz)
Frequency (Hz)
INPUT NOISE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
CHANNEL SEPARATION vs FREQUENCY
RL = 10kΩ
1k
100
10
160
140
120
100
80
Current Noise
Dual and quad devices.
G = 1, all channels.
Quad measured channel
A to D or B to C—other
combinations yield improved
rejection.
Voltage Noise
1
10
100
1k
10k
100k
10
100
1k
Frequency (Hz)
10k
100k
Frequency (Hz)
INPUT BIAS CURRENT
vs INPUT COMMON-MODE VOLTAGE
INPUT BIAS AND INPUT OFFSET CURRENT
vs TEMPERATURE
–17
–20
VS = +2.7V, +5V
VS = +5V
–16
–15
–14
–13
–12
–11
–10
–15
–10
–5
IB
VS = ±15V
VS = +2.7V
VS = ±15V
IOS
0
+5
–15
–10
–5
0
5
10
15
–75
–50
–25
0
25
50
75
100
125
Common-Mode Voltage (V)
Ambient Temperature (°C)
®
6
OPA234, 2234, 4234
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25°C and RL = 10kΩ unless otherwise noted.
OFFSET VOLTAGE
OFFSET VOLTAGE
PRODUCTION DISTRIBUTION
PRODUCTION DISTRIBUTION
30
25
20
15
10
5
25
20
15
10
5
Typical production
distribution of packaged
units. Single, dual,
VS = ±15V
Typical production
VS = +2.7V, +5V
distribution of packaged
units. Single, dual, and
quad units included.
and quad units included.
0.7%
0.3%
0.1%
0.3%
0.5%
0.1%
0.1%
0.2%
0
0
Offset Voltage (µV)
Offset Voltage (µV)
OFFSET VOLTAGE DRIFT
OFFSET VOLTAGE DRIFT
PRODUCTION DISTRIBUTION
PRODUCTION DISTRIBUTION
35
30
25
20
15
10
5
35
30
25
20
15
10
5
VS = +5V
Typical production
distribution of packaged
units. Single, dual,
VS = +2.7V
Typical production
distribution of packaged
units. Single, dual,
and quad units included.
and quad units included.
0.3%
0.5%
0.3%
0.2% 0.1%
0.1%
0.2% 0.1%
0.1%
0.1%
0
0
Offset Voltage Drift (µV/°C)
Offset Voltage Drift (µV/°C)
OFFSET VOLTAGE DRIFT
AOL, CMR, PSR vs TEMPERATURE
VS = +2.7V
PRODUCTION DISTRIBUTION
30
25
20
15
10
5
140
130
120
110
100
90
Typical production
distribution of packaged
units. Single, dual,
VS = ±15V
AOL
VS = +5V
VS = ±15V
and quad units included.
PSR
CMR
0.4%
0.3%
80
0.2%
0.1%
0.1%
0.1%
0.1%
70
VCM = (V–) –0.02V to (V+) –1V
0
60
–75
–50
–25
0
25
50
75
100
125
Ambient Temperature (°C)
Offset Voltage Drift (µV/°C)
®
7
OPA234, 2234, 4234
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25°C and RL = 10kΩ unless otherwise noted.
SMALL-SIGNAL STEP RESPONSE
G = 1, CL = 10,000pF, VS = +5V
SMALL-SIGNAL STEP RESPONSE
G = 1, CL = 100pF, VS = +5V
20µs/div
2µs/div
LARGE-SIGNAL STEP RESPONSE
G = 1, CL = 100pF, VS = +5V
1000
SETTLING TIME vs CLOSED-LOOP GAIN
CL = 100pF
VS = ±15V,
10V Step
100
10
VS = +5V,
3V Step
VS = +2.7V,
1V Step
0.1%
0.01%
1
10µs/div
±1
±10
±100
Gain (V/V)
SMALL-SIGNAL OVERSHOOT
vs LOAD CAPACITANCE
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT
25°C
V+
(V+) –0.5
(V+) –1
70
60
50
40
30
20
10
0
VO = 100mVp-p
(V+) –1.5
(V+) –2
–55°C
–40°C
G = –2
125°C
85°C
(V+) –2.5
(V+) –3
G = –1,
G = +2
(V–) +3
(V–) +2.5
(V–) +2
(V–) +1.5
(V–) +1
(V–) +0.5
V–
85°C
25°C
–40°C
–55°C
G = +1,
VS = ±15V
G = +1,
VS = +2.7, +5V
G = ±10
125°C
High output current may
not be available at low
supply voltages due to
output swing limitations.
0
±5
±10
±15
10pF
100pF
1nF
10nF
100nF
Output Current (mA)
Load Capacitance
®
8
OPA234, 2234, 4234
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25°C and RL = 10kΩ unless otherwise noted.
QUIESCENT CURRENT AND SHORT-CIRCUIT CURRENT
vs TEMPERATURE
MAXIMUM OUTPUT VOLTAGE
vs FREQUENCY
70
60
50
40
30
20
10
0
525
450
375
300
225
150
75
30
25
20
15
10
5
VS = +2.7V
V
S = +5V
VS = ±15V
V
V
S = +2.7V or +5V
S = ±15V
Maximum output voltage
without slew-rate induced
distortion
±IQ
±ISC
VS = +5V
VS = ±2.7V
0
0
1k
10k
Frequency (Hz)
100k
–75
–50
–25
0
25
50
75
100
125
Temperature (°C)
APPLICATIONS INFORMATION
V+
OPA234 series op amps are unity-gain stable and suitable
for a wide range of general-purpose applications. Power
supply pins should be bypassed with 10nF ceramic capaci-
tors.
10nF
OPA234 single op amp only.
Use offset adjust pins only to null
offset voltage of op amp—see text.
7
2
6
OPA234
3
5
OPERATING VOLTAGE
1
4
10nF
100kΩ
OPA234 series op amps operate from single (+2.7V to
+36V) or dual (±1.35V to ±18V) supplies with excellent
performance. Specifications are production tested with
+2.7V, +5V, and ±15V supplies. Most behavior remains
unchanged throughout the full operating voltage range.
Parameters which vary significantly with operating volt-
age are shown in typical performance curves.
Trim Range: ±4mV typ
(V–) = 0V for single supply operation.
V–
FIGURE 1. OPA234 Offset Voltage Trim Circuit.
OFFSET VOLTAGE TRIM
Offset voltage of OPA234 series amplifiers is laser trimmed
and usually requires no user adjustment. The OPA234
(single op amp version) provides offset voltage trim con-
nections on pins 1 and 5. Offset voltage can be adjusted by
connecting a potentiometer as shown in Figure 1. This
adjustment should be used only to null the offset of the op
amp, not to adjust system offset or offset produced by the
signal source. Nulling offset could degrade the offset drift
behavior of the op amp. While it is not possible to predict
the exact change in drift, the effect is usually small.
®
9
OPA234, 2234, 4234
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