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OPA241, OPA251
®
OPA241
OPA2241
OPA4241
OPA251
OPA2251
OPA4251
Single-Supply, Micro POWER
OPERATIONAL AMPLIFIERS
OPA241 Family optimized for +5V supply.
DESCRIPTION
The OPA241 series and OPA251 series are specifically
designed for battery powered, portable applications. In addi-
tion to very low power consumption (25
OPA251 Family optimized for
±
15V supply.
A), these amplifi-
ers feature low offset voltage, rail-to-rail output swing, high
common-mode rejection, and high open-loop gain.
The OPA241 series is optimized for operation at low power
supply voltage while the OPA251 series is optimized for
high power supplies. Both can operate from either single
(+2.7V to +36V) or dual supplies (
m
FEATURES
l
Micro POWER: I Q = 25
m
A
l
SINGLE-SUPPLY OPERATION
l
RAIL-TO-RAIL OUTPUT (within 50mV)
18V). The
input common-mode voltage range extends 200mV below
the negative supply—ideal for single-supply applications.
They are unity-gain stable and can drive large capacitive
loads. Special design considerations assure that these prod-
ucts are easy to use. High performance is maintained as the
amplifiers swing to their specified limits. Because the initial
offset voltage (
±
1.35V to
±
l
WIDE SUPPLY RANGE
Single Supply: +2.7V to +36V
Dual Supply:
±
1.35V to
±
18V
l
LOW OFFSET VOLTAGE:
±
250
m
V max
l
HIGH COMMON-MODE REJECTION: 124dB
l
HIGH OPEN-LOOP GAIN: 128dB
l
SINGLE, DUAL, AND QUAD
V max) is so low, user adjustment is
usually not required. However, external trim pins are pro-
vided for special applications (single versions only).
The OPA241 and OPA251 (single versions) are available
in standard 8-pin DIP and SO-8 surface-mount packages.
The OPA2241 and OPA2251 (dual versions) come in 8-pin
DIP and SO-8 surface-mount packages. The OPA4241 and
OPA4251 (quad versions) are available in 14-pin DIP and
SO-14 surface-mount packages. All are fully specified
from –40
±
250
m
BATTERY OPERATED INSTRUMENTS
l
PORTABLE DEVICES
l
MEDICAL INSTRUMENTS
l
TEST EQUIPMENT
°
C to +85
°
C and operate from –55
°
C to +125
C.
OPA241, OPA251
OPA2241, OPA2251
OPA4241, OPA4251
Offset Trim
1
8
NC
Out A
1
8
V+
Out A
1
14
Out D
–In
2
7
V+
–In A
2
A
7
Out B
–In A
2
13
–In D
A
D
+In
3
6
Output
+In A
3
B
6
–In B
+In A
3
12
+In D
V–
4
5
Offset Trim
V–
4
5
+In B
V+
4
11
V–
+In B
5
10
+In C
8-Pin DIP, SO-8
8-Pin DIP, SO-8
B
C
–In B
6
9
–In C
Out B
7
8
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 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
OPA241, 2241, 4241
OPA251, 2251, 4251
®
© 1997 Burr-Brown Corporation
PDS-1406B
1
Printed in U.S.A. October, 1998
APPLICATIONS
l
°
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SPECIFICATIONS: V S = 2.7V to 5V
At T A = +25
°
C, R L = 100k
W
°
C to +85
C.
OPA241UA, PA
OPA251UA, PA
OPA2241UA, PA
OPA2251UA, PA
OPA4241UA, PA
OPA4251UA, PA
PARAMETER
CONDITION
MIN
TYP (1)
MAX
MIN
TYP (1)
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
V OS
± 50
± 250
± 100
m V
T A = –40
° C to +85 ° C
± 100
± 400
± 130
m V
vs Temperature
dV OS /dT
T A = –40
° C to +85 ° C
± 0.4
± 0.6
m V/ ° C
vs Power Supply
PSRR
V S = 2.7V to 36V
3
30
[
[
m V/V
T A = –40
° C to +85 ° C
V S = 2.7V to 36V
30
[
m V/V
Channel Separation (dual, quad)
0.3
[
m V/V
INPUT BIAS CURRENT
Input Bias Current (2)
I B
–4
–20
[
nA
T A = –40
°
C to +85
°
C
–25
nA
Input Offset Current
I OS
±
0.1
±
2
[
nA
T A = –40
°
C to +85
°
C
±
2
nA
NOISE
Input Voltage Noise, f = 0.1Hz to 10Hz
1
[
m Vp-p
Input Voltage Noise Density, f = 1kHz e n
45
[
nV/ Ö Hz
Current Noise Density, f = 1kHz
i n
40
[
fA/ Ö Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
V CM
–0.2
(V+) –0.8
V
Common-Mode Rejection Ratio
CMRR
V CM = –0.2V to (V+) –0.8V
80
106
[
dB
T A = –40
° C to +85 ° C
V CM = 0V to (V+) –0.8V
80
dB
INPUT IMPEDANCE
Differential
10 7 || 2
[
W
|| pF
Common-Mode
10 9 || 4
[
W
|| pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain
A OL R L = 100k W , V O = (V–)+100mV to (V+)–100mV
100
120
[
dB
T A = –40
° C to +85 ° C
R L = 100k W , V O = (V–)+100mV to (V+)–100mV
100
dB
R L = 10k W , V O = (V–)+200mV to (V+)–200mV
100
120
[
dB
T A = –40
° C to +85 ° C
R L = 10k W , V O = (V–)+200mV to (V+)–200mV
100
dB
FREQUENCY RESPONSE
Gain-Bandwidth Product
GBW
35
[
kHz
Slew Rate
SR
V S = 5V, G = 1
0.01
[
V/ m s
Overload Recovery Time
V IN • G = V S
60
[
m s
OUTPUT
Voltage Output Swing from Rail (3)
V O
R L = 100k
W
to V S /2, A OL ³
70dB
50
[
mV
R L = 100k
W
to V S /2, A OL ³
100dB
75
100
[
mV
T A = –40
°
C to +85
°
C
R L = 100k
W
to V S /2, A OL ³
100dB
100
mV
R L = 10k
W
to V S /2, A OL ³
100dB
100
200
[
mV
T A = –40
°
C to +85
°
C
R L = 10k
W
to V S /2, A OL ³
100dB
200
mV
Short-Circuit Current
I SC
Single Versions
–24/+4
[
mA
Dual, Quad Versions
–30/+4
[
mA
Capacitive Load Drive
C LOAD
See Typical Curve
[
POWER SUPPLY
Specified Voltage Range
V S
+2.7 to +5
[
V
Operating Voltage Range
T A = –40
° C to +85 ° C
+2.7
+36
[
[
V
Quiescent Current (per amplifier)
I Q
I O = 0
± 25
± 30
[
m A
T A = –40
° C to +85 ° C
I O = 0
± 36
m A
TEMPERATURE RANGE
Specified Range
–40
+85
[
[
° C
Operating Range
–55
+125
[
[
° C
Storage Range
–55
+125
[
[
° C
Thermal Resistance
q JA
8-Pin DIP
100
[
° C/W
SO-8 Surface Mount
150
[
° C/W
14-Pin DIP
80
[
° C/W
SO-14 Surface Mount
100
[
° C/W
[ Specifications the same as OPA241UA, PA.
NOTES: (1) V S = +5V. (2) The negative sign indicates input bias current flows out of the input terminals. (3) Output voltage swings are measured between the
output and power supply rails.
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.
®
OPA241, 2241, 4241
OPA251, 2251, 4251
2
connected to V S /2, unless otherwise noted.
Boldface limits apply over the specified temperature range, T A = –40
°
104211542.036.png 104211542.037.png 104211542.038.png 104211542.039.png
SPECIFICATIONS: V S =
±
15V
connected to ground, unless otherwise noted.
Boldface limits apply over the specified temperature range, T A = –40
°
C, R L = 100k
W
°
C to +85
C.
OPA241UA, PA
OPA251UA, PA
OPA2241UA, PA
OPA2251UA, PA
OPA4241UA, PA
OPA4251UA, PA
PARAMETER
CONDITION
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
V OS
± 100
± 50
± 250
m V
T A = –40
° C to +85 ° C
± 150
± 100
± 300
m V
vs Temperature
dV OS /dT
T A = –40
° C to +85 ° C
± 0.6
± 0.5
m V/ ° C
vs Power Supply
PSRR
V S = ± 1.35V to ± 18V
[
[
3
30
m V/V
T A = –40
° C to +85 ° C
V S = ± 1.35V to ± 18V
[
30
m V/V
Channel Separation (dual, quad)
[
0.3
m V/V
INPUT BIAS CURRENT
Input Bias Current (1)
I B
[
–4
–20
nA
T A = –40
° C to +85 ° C
–25
nA
Input Offset Current
I OS
[
± 0.1
± 2
nA
T A = –40
° C to +85 ° C
± 2
nA
NOISE
Input Voltage Noise, f = 0.1Hz to 10Hz
[
1
m
Vp-p
Input Voltage Noise Density, f = 1kHz e n
[
45
nV/
Ö
Hz
Current Noise Density, f = 1kHz
i n
[
40
fA/
Ö
Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
V CM
(V–) –0.2
(V+) –0.8
V
Common-Mode Rejection Ratio
CMRR
V CM = –15.2V to 14.2V
[
100
124
dB
T A = –40
° C to +85 ° C
V CM = –15V to 14.2V
100
dB
INPUT IMPEDANCE
Differential
[
10 7 || 2
W || pF
Common-Mode
[
10 9 || 4
W || pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain
A OL R L = 100k
W
, V O = –14.75V to +14.75V
[
100
128
dB
T A = –40
°
C to +85
°
C
R L = 100k
W
, V O = –14.75V to +14.75V
100
dB
R L = 20k
W
, V O = –14.7V to +14.7V
[
100
128
dB
T A = –40
°
C to +85
°
C
R L = 20k
W
, V O = –14.7V to +14.7V
100
dB
FREQUENCY RESPONSE
Gain-Bandwidth Product
GBW
[
35
kHz
Slew Rate
SR
G = 1
[
0.01
V/ m s
Overload Recovery Time
V IN • G = V S
[
60
m s
OUTPUT
Voltage Output Swing from Rail (2)
V O
R L = 100k W , A OL ³ 70dB
[
50
mV
R L = 100k W , A OL ³ 100dB
[
75
250
mV
T A = –40
° C to +85 ° C
R L = 100k W , A OL ³ 100dB
250
mV
R L = 20k W , A OL ³ 100dB
[
100
300
mV
T A = –40
° C to +85 ° C
R L = 20k W , A OL ³ 100dB
300
mV
Short-Circuit Current
I SC
Single Versions
[
–21/+4
mA
Dual Versions
[
–50/+4
mA
Capacitive Load Drive
C LOAD
[
See Typical Curve
POWER SUPPLY
Specified Voltage Range
V S
[
±
15
V
Operating Voltage Range
T A = –40
°
C to +85
°
C
[
[
±
1.35
±
18
V
Quiescent Current (per amplifier)
I Q
I O = 0
[
±
27
±
38
m
A
T A = –40
°
C to +85
°
C
I O = 0
±
45
m
A
TEMPERATURE RANGE
Specified Range
[
[
–40
+85
° C
Operating Range
[
[
–55
+125
° C
Storage Range
[
[
–55
+125
° C
Thermal Resistance
q JA
8-Pin DIP
[
100
° C/W
SO-8 Surface Mount
[
150
° C/W
14-Pin DIP
[
80
° C/W
SO-14 Surface Mount
[
100
° C/W
[ Specifications the same as OPA251UA, PA.
NOTES: (1) The negative sign indicates input bias current flows out of the input terminals. (2) Output voltage swings are measured between the output and
power supply rails.
OPA241, 2241, 4241
OPA251, 2251, 4251
®
3
At T A = +25
°
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ABSOLUTE MAXIMUM RATINGS (1)
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.
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.
Supply Voltage, V+ to V– .................................................................... 36V
Input Voltage (2) .................................................. (V–) –0.5V to (V+) +0.5V
Output Short Circuit to Ground (3) ............................................ Continuous
Operating Temperature .................................................. –55 ° C to +125 ° C
Storage Temperature ..................................................... –55 ° C to +125 ° C
Junction Temperature ...................................................................... 150 ° C
Lead Temperature (soldering, 10s) ................................................. 300 ° C
NOTES: (1) Stresses above these ratings may cause permanent damage.
(2) Input terminals are diode-clamped to the power supply rails. Input signals
that can swing more that 0.5V beyond the supply rails should be current-
limited to 5mA or less. (3) One amplifier per package.
PACKAGE/ORDERING INFORMATION
OPERATING
PACKAGE
SPECIFICATION
SPECIFIED
VOLTAGE
DRAWING
TEMPERATURE
PRODUCT
VOLTAGE
RANGE
PACKAGE
NUMBER (1)
RANGE
OPA241 SERIES
Single
OPA241PA
2.7V to 5V
2.7V to 36V
8-Pin DIP
006
–40 ° C to +85 ° C
OPA241UA
2.7V to 5V
2.7V to 36V
SO-8 Surface Mount
182
–40 ° C to +85 ° C
Dual
OPA2241PA
2.7V to 5V
2.7V to 36V
8-Pin DIP
006
–40 ° C to +85 ° C
OPA2241UA
2.7V to 5V
2.7V to 36V
SO-8 Surface Mount
182
–40 ° C to +85 ° C
Quad
OPA4241PA
2.7V to 5V
2.7V to 36V
14-Pin DIP
010
–40
°
C to +85
°
C
OPA4241UA
2.7V to 5V
2.7V to 36V
SO-14 Surface Mount
235
–40
°
C to +85
°
C
OPA251 SERIES
Single
OPA251PA
± 15V
2.7V to 36V
8-Pin DIP
006
–40 ° C to +85 ° C
OPA251UA
± 15V
2.7V to 36V
SO-8 Surface Mount
182
–40 ° C to +85 ° C
Dual
OPA2251PA
± 15V
2.7V to 36V
8-Pin DIP
006
–40 ° C to +85 ° C
OPA2251UA
± 15V
2.7V to 36V
SO-8 Surface Mount
182
–40 ° C to +85 ° C
Quad
OPA4251PA
±
15V
2.7V to 36V
14-Pin DIP
010
–40
°
C to +85
°
C
OPA4251UA
±
15V
2.7V to 36V
SO-14 Surface Mount
235
–40
°
C to +85
°
C
NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book.
®
OPA241, 2241, 4241
OPA251, 2251, 4251
4
104211542.059.png 104211542.061.png 104211542.062.png 104211542.063.png 104211542.064.png 104211542.065.png 104211542.066.png
 
TYPICAL PERFORMANCE CURVES
At T A = +25
°
C, and R L = 100k
W
connected to V S /2 (ground for V S =
±
15V), unless otherwise noted.
Curves apply to OPA241 and OPA251 unless specified.
OPEN-LOOP GAIN/PHASE vs FREQUENCY
POWER SUPPLY and COMMON-MODE
REJECTION RATIO vs FREQUENCY
160
140
120
100
80
60
40
20
0
–20
180
160
140
120
100
80
60
40
20
0
140
V S =
±
15V
120
V S =
±
5V
CMRR
G
100
F
80
+PSRR
60
–PSRR
40
V S = ±15V
V S = +5V
20
0
0.01
0.1
1
10
100
1k
10k
100k
0.1
1
10
100
1k
10k
100k
Frequency (Hz)
Frequency (Hz)
CHANNEL SEPARATION vs FREQUENCY
INPUT VOLTAGE AND CURRENT
NOISE SPECTRAL DENSITY vs FREQUENCY
140
1k
1k
130
120
110
Dual and quad devices.
G = 1, all channels.
Quad measured channel
A to D or B to C—other
combinations yield improved
rejection.
100
Current Noise
100
100
90
Voltage Noise
80
70
10
10
10
100
1k
10k
100k
0.1
1
10
100
1k
10k
Frequency (Hz)
Frequency (Hz)
QUIESCENT CURRENT vs SUPPLY VOLTAGE
QUIESCENT CURRENT vs TEMPERATURE
30
40
Per Amplifier
Per Amplifier
28
35
30
V S = ± 15V
26
25
V S = +5V
24
20
22
15
0
5
10
15
20
25
30
35
40
–75 –50 –25
0
25
50
75
100 125
Total Supply Voltage (V)
Temperature (
C)
OPA241, 2241, 4241
OPA251, 2251, 4251
®
5
°
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