Data Sheet OP270
Rev. F | Page 3 of 20
SPECIFICATIONS
V
S
= ±15 V, T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter Symbol Test Conditions
OP270E OP270F OP270G
Unit Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage V
OS
10 75 20 150 50 250 μV
Input Offset Current I
OS
V
CM
= 0 V 1 10 3 15 5 20 nA
Input Bias Current I
B
V
CM
= 0 V 5 20 10 40 15 60 nA
Input Noise Voltage
1
e
n
p-p 0.1 Hz to 10 Hz 80 200 80 200 80 nV p-p
Input Noise Voltage Density
2
e
n
f
O
= 10 Hz 3.6 6.5 3.6 6.5 3.6 nV/√Hz
e
n
f
O
= 100 Hz 3.2 5.5 3.2 5.5 3.2 nV/√Hz
e
n
f
O
= 1 kHz 3.2 5.0 3.2 5.0 3.2 nV/√Hz
Input Noise Current Density i
n
f
O
= 10 Hz 1.1 1.1 1.1 pA/√Hz
i
n
f
O
= 100 Hz 0.7 0.7 0.7 pA/√Hz
i
n
f
O
= 1 kHz 0.6 0.6 0.6 pA/√Hz
Large-Signal Voltage Gain A
VO
V
O
= ±10 V,
R
L
= 10 kΩ
1500 2300 1000 1700 750 1500 V/mV
V
O
= ±10 V,
R
L
= 2 kΩ
750 1200 500 900 350 700 V/mV
Input Voltage Range
3
IVR ±12 ±12.5 ±12 ±12.5 ±12 ±12.5 V
Output Voltage Swing V
O
R
L
≥ 2 kΩ ±12 ±13.5 ±12 ±13.5 ±12 ±13.5 V
Common-Mode Rejection CMR V
CM
= ±11 V 106 125 100 120 90 110 dB
Power Supply Rejection
Ratio
PSRR
V
S
= ±4.5 V
to ±18 V
0.56 3.2 1.0 5.6 1.5 5.6 μV/V
Slew Rate SR 1.7 2.4 1.7 2.4 1.7 2.4 V/μs
Supply Current
(All Amplifiers)
I
SY
No load 4 6.5 4 6.5 4 6.5 mA
Gain Bandwidth Product GBP 5 5 5 MHz
Channel Separation
1
CS
V
O
= ±20 V p-p,
f
O
= 10 Hz
125 175 125 175 175 dB
Input Capacitance C
IN
3 3 3 pF
Input Resistance
Differential Mode R
IN
0.4 0.4 0.4
Common Mode R
INCM
20 20 20
Settling Time t
S
A
V
= +1, 10 V,
step to 0.01%
5 5 5 μs
1
Guaranteed but not 100% tested.
2
Sample tested.
3
Guaranteed by CMR test.
OP270 Data Sheet
Rev. F | Page 4 of 20
ELECTRICAL SPECIFICATIONS
V
S
= ±15 V, −40°C ≤ T
A
≤ 85°C, unless otherwise noted.
Table 2.
Parameter Symbol Test Conditions
OP270E OP270F OP270G
Unit Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage V
OS
25 150 45 275 100 400 μV
Average Input Offset
Voltage Drift
TCV
OS
0.2 1 0.4 2 0.7 3 μV/°C
Input Offset Current I
OS
V
CM
= 0 V 1.5 30 5 40 15 50 nA
Input Bias Voltage I
B
V
CM
= 0 V 6 60 15 70 19 80 nA
Large-Signal Voltage Gain A
VO
V
O
= ±10 V,
R
L
= 10 kΩ
1000 1800 600 1400 400 1250 V/mV
A
VO
V
O
= ±10 V,
R
L
= 2 kΩ
500 900 300 700 225 670 V/mV
Input Voltage Range
1
IVR ±12 ±12.5 ±12 ±12.5 ±12 ±12.5 V
Output Voltage Swing V
O
R
L
≥ 2 kΩ ±12 ±13.5 ±12 ±13.5 ±12 ±13.5 V
Common-Mode Rejection CMR V
CM
= ±11 V 100 120 94 115 90 100 dB
Power Supply Rejection
Ratio
PSRR V
S
= ±4.5 V to ±18 V 0.7 5.6 1.8 10 2.0 1.5 μV/V
Supply Current
(All Amplifiers)
I
SY
No load 4.4 7.2 4.4 7.2 4.4 7.2 mA
1
Guaranteed by CMR test.
Data Sheet OP270
Rev. F | Page 5 of 20
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter Rating
Supply Voltage ±18 V
Differential Input Voltage
1
±1.0 V
Differential Input Current
1
±25 mA
Input Voltage Supply voltage
Output Short-Circuit Duration Continuous
Storage Temperature Range −65°C to +150°C
Lead Temperature Range (Soldering, 60 sec) 300°C
Junction Temperature (T
J
) −65°C to +150°C
Operating Temperature Range −40°C to +85°C
1
The OP270 inputs are protected by back-to-back diodes. To achieve low noise
performance, current-limiting resistors are not used. If the differential voltage
exceeds +10 V, the input current should be limited to ±25 mA.
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
ESD CAUTION

OP270FZ

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Precision Amplifiers VERY LOW-NOISE PRECISION
Lifecycle:
New from this manufacturer.
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