The OPA241 series and OPA251 series are specifically
designed for battery powered, portable applications. In addi-
tion to very low power consumption (25µA), 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 (±1.35V to
±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 (±250µV 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°C to +85°C and operate from –55°C to +125°C.
FEATURES
q
q
q
q
Micro
POWER: I
Q
= 25
µ
A
q
q
q
q
SINGLE-SUPPLY OPERATION
RAIL-TO-RAIL OUTPUT (within 50mV)
WIDE SUPPLY RANGE
Single Supply: +2.7V to +36V
Dual Supply:
±
1.35V to
±
18V
LOW OFFSET VOLTAGE:
±
250
µ
V max
HIGH COMMON-MODE REJECTION: 124dB
HIGH OPEN-LOOP GAIN: 128dB
SINGLE, DUAL, AND QUAD
APPLICATIONS
q
BATTERY OPERATED INSTRUMENTS
q
PORTABLE DEVICES
q
MEDICAL INSTRUMENTS
q
TEST EQUIPMENT
OPA241, OPA251
Offset Trim
–In
+In
V–
1
2
3
4
8-Pin DIP, SO-8
8
7
6
5
NC
V+
Output
Offset Trim
OPA2241, OPA2251
Out A
–In A
+In A
V–
1
2
3
4
8-Pin DIP, SO-8
A
B
8
7
6
5
V+
Out B
–In B
+In B
Out A
–In A
+In A
V+
+In B
–In B
Out B
1
2
OPA4241, OPA4251
14
13
A
3
4
5
B
6
7
14-Pin DIP, SO-14
C
9
8
–In C
Out C
D
12
11
10
+In D
V–
+In C
Out D
–In D
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
limits apply over the specified temperature range, T
A
= –40°C to +85°C.
OPA241UA, PA
OPA2241UA, PA
OPA4241UA, PA
PARAMETER
OFFSET VOLTAGE
Input Offset Voltage
T
A
= –40
°
C to +85
°
C
vs Temperature
vs Power Supply
T
A
= –40
°
C to +85
°
C
Channel Separation (dual, quad)
INPUT BIAS CURRENT
Input Bias Current
(2)
T
A
= –40
°
C to +85
°
C
Input Offset Current
T
A
= –40
°
C to +85
°
C
NOISE
Input Voltage Noise, f = 0.1Hz to 10Hz
Input Voltage Noise Density, f = 1kHz
Current Noise Density, f = 1kHz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio
T
A
= –40
°
C to +85
°
C
INPUT IMPEDANCE
Differential
Common-Mode
OPEN-LOOP GAIN
Open-Loop Voltage Gain
T
A
= –40
°
C to +85
°
C
T
A
= –40
°
C to +85
°
C
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Overload Recovery Time
OUTPUT
Voltage Output Swing from Rail
(3)
T
A
= –40
°
C to +85
°
C
T
A
= –40
°
C to +85
°
C
Short-Circuit Current
Single Versions
Dual, Quad Versions
Capacitive Load Drive
POWER SUPPLY
Specified Voltage Range
Operating Voltage Range
Quiescent Current (per amplifier)
T
A
= –40
°
C to +85
°
C
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
8-Pin DIP
SO-8 Surface Mount
14-Pin DIP
SO-14 Surface Mount
GBW
SR
A
OL
R
L
= 100kΩ, V
O
= (V–)+100mV to (V+)–100mV
R
L
= 100kΩ, V
O
= (V–)+100mV to (V+)–100mV
R
L
= 10kΩ, V
O
= (V–)+200mV to (V+)–200mV
R
L
= 10kΩ, V
O
= (V–)+200mV to (V+)–200mV
100
100
100
100
V
OS
dV
OS
/dT
PSRR
T
A
= –40
°
C to +85
°
C
V
S
= 2.7V to 36V
V
S
= 2.7V to 36V
CONDITION
MIN
TYP
(1)
±50
MAX
±250
OPA251UA, PA
OPA2251UA, PA
OPA4251UA, PA
MIN
TYP
(1)
±100
MAX
UNITS
µV
µV
µV/°C
µV/V
µV/V
µV/V
nA
nA
nA
nA
µVp-p
nV/√Hz
fA/√Hz
V
dB
dB
Ω
|| pF
Ω
|| pF
dB
dB
dB
dB
kHz
V/µs
µs
mV
mV
mV
mV
mV
mA
mA
±
100
±
0.4
3
0.3
±
400
30
30
±
130
±
0.6
T
T
T
T
I
B
I
OS
–4
±0.1
–20
–25
±2
±
2
T
T
e
n
i
n
–0.2
80
80
1
45
40
(V+) –0.8
106
T
T
T
V
CM
CMRR
V
CM
= –0.2V to (V+) –0.8V
V
CM
= 0V to (V+) –0.8V
T
10
7
|| 2
10
9
|| 4
120
120
T
T
T
T
V
S
= 5V, G = 1
V
IN
• G = V
S
R
L
= 100kΩ to V
S
/2, A
OL
≥
70dB
R
L
= 100kΩ to V
S
/2, A
OL
≥
100dB
R
L
= 100kΩ to V
S
/2, A
OL
≥
100dB
R
L
= 10kΩ to V
S
/2, A
OL
≥
100dB
R
L
= 10kΩ to V
S
/2, A
OL
≥
100dB
35
0.01
60
50
75
100
T
T
T
T
T
T
V
O
100
100
200
200
I
SC
–24/+4
–30/+4
See Typical Curve
+2.7 to +5
+2.7
±25
+36
±30
±
36
+85
+125
+125
100
150
80
100
T
T
T
T
T
T
T
C
LOAD
V
S
I
Q
T
A
= –40
°
C to +85
°
C
I
O
= 0
I
O
= 0
V
V
µA
µA
°C
°C
°C
°C/W
°C/W
°C/W
°C/W
–40
–55
–55
T
T
T
T
T
T
T
T
T
T
θ
JA
T
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
SPECIFICATIONS: V
S
=
±
15V
At T
A
= +25°C, R
L
= 100kΩ connected to ground, unless otherwise noted.
Boldface
limits apply over the specified temperature range, T
A
= –40°C to +85°C.
OPA241UA, PA
OPA2241UA, PA
OPA4241UA, PA
PARAMETER
OFFSET VOLTAGE
Input Offset Voltage
T
A
= –40
°
C to +85
°
C
vs Temperature
vs Power Supply
T
A
= –40
°
C to +85
°
C
Channel Separation (dual, quad)
INPUT BIAS CURRENT
Input Bias Current
(1)
T
A
= –40
°
C to +85
°
C
Input Offset Current
T
A
= –40
°
C to +85
°
C
NOISE
Input Voltage Noise, f = 0.1Hz to 10Hz
Input Voltage Noise Density, f = 1kHz
Current Noise Density, f = 1kHz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio
T
A
= –40
°
C to +85
°
C
INPUT IMPEDANCE
Differential
Common-Mode
OPEN-LOOP GAIN
Open-Loop Voltage Gain
T
A
= –40
°
C to +85
°
C
T
A
= –40
°
C to +85
°
C
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Overload Recovery Time
OUTPUT
Voltage Output Swing from Rail
(2)
T
A
= –40
°
C to +85
°
C
T
A
= –40
°
C to +85
°
C
Short-Circuit Current
Single Versions
Dual Versions
Capacitive Load Drive
POWER SUPPLY
Specified Voltage Range
Operating Voltage Range
Quiescent Current (per amplifier)
T
A
= –40
°
C to +85
°
C
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
8-Pin DIP
SO-8 Surface Mount
14-Pin DIP
SO-14 Surface Mount
GBW
SR
A
OL
R
L
= 100kΩ, V
O
= –14.75V to +14.75V
R
L
= 100kΩ, V
O
= –14.75V to +14.75V
R
L
= 20kΩ, V
O
= –14.7V to +14.7V
R
L
= 20kΩ, V
O
= –14.7V to +14.7V
V
OS
dV
OS
/dT
PSRR
T
A
= –40
°
C to +85
°
C
V
S
=
±1.35V
to
±18V
V
S
=
±1.35V
to
±18V
CONDITION
MIN
TYP
±100
±
150
±
0.6
T
T
I
B
I
OS
T
T
MAX
OPA251UA, PA
OPA2251UA, PA
OPA4251UA, PA
MIN
TYP
±50
MAX
±250
UNITS
µV
µV
µV/°C
µV/V
µV/V
µV/V
nA
nA
nA
nA
µVp-p
nV/√Hz
fA/√Hz
(V+) –0.8
124
V
dB
dB
Ω
|| pF
Ω
|| pF
dB
dB
dB
dB
kHz
V/µs
µs
mV
mV
mV
mV
mV
mA
mA
±
100
±
0.5
T
T
3
0.3
–4
±0.1
±
300
30
30
–20
–25
±2
±
2
e
n
i
n
T
T
T
(V–) –0.2
100
100
1
45
40
V
CM
CMRR
V
CM
= –15.2V to 14.2V
V
CM
= –15V to 14.2V
T
T
T
T
T
100
100
100
100
10
7
|| 2
10
9
|| 4
128
128
G=1
V
IN
• G = V
S
R
L
= 100kΩ, A
OL
≥
70dB
R
L
= 100kΩ, A
OL
≥
100dB
R
L
= 100kΩ, A
OL
≥
100dB
R
L
= 20kΩ, A
OL
≥
100dB
R
L
= 20kΩ, A
OL
≥
100dB
T
T
T
T
T
T
35
0.01
60
50
75
100
V
O
250
250
300
300
I
SC
T
T
T
T
T
T
T
–21/+4
–50/+4
See Typical Curve
±15
±27
C
LOAD
V
S
I
Q
T
A
= –40
°
C to +85
°
C
I
O
= 0
I
O
= 0
±
1.35
±
18
±
45
±38
V
V
µA
µA
°C
°C
°C
°C/W
°C/W
°C/W
°C/W
T
T
T
T
T
T
T
T
T
T
–40
–55
–55
100
150
80
100
+85
+125
+125
θ
JA
T
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.
3
OPA241, 2241, 4241
OPA251, 2251, 4251
®
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage, V+ to V– .................................................................... 36V
Input Voltage
(2)
.................................................. (V–) –0.5V to (V+) +0.5V
