a
Next Generation OP07
Ultralow Offset Voltage Operational Amplifier
OP77
PIN CONNECTIONS
Epoxy Mini-Dip (P-Suffix)
8-Pin Hermetic DIP
FEATURES
Outstanding Gain Linearity
Ultrahigh Gain 5000 V/mV Min
Low V
OS
Over Temperature 60 V Max
Excellent TCVos 0.3 V/ C Max
High PSRR 3 V/V Max
Low Power Consumption 60 mW Max
Fits OP07, 725,108A/308A, 741 Sockets
Available in Die Form
V
OS
TRIM
1
–IN
2
+IN
3
V–
4
OP07
8
V
OS
TRIM
7
V+
6
OUT
5
NC
NC = NO CONNECT
GENERAL DESCRIPTION
The OP77 significantly advances the state-of-the-art in precision
op amps. The OP77’s outstanding gain of 10,000,000 or more
is maintained over the full 10 V output range. This exceptional
gain-linearity eliminates incorrectable system nonlinearities
common in previous monolithic op amps, and provides superior
performance in high closed-loop gain applications. Low initial
V
OS
drift and rapid stabilization time, combined with only 50
mW power consumption, are significant improvements over
previous designs. These characteristics, plus the exceptional
TCV
OS
of 0.3
mV/∞C
maximum and the low V
OS
of 25
mV
maxi-
mum, eliminates the need for V
OS
adjustment and increases
system accuracy over temperature.
PSRR of 3
mV/V
(110 dB) and CMRR of 1.0
mV/V
maximum
virtually eliminate errors caused by power supply drifts and
common-mode signals. This combination of outstanding char-
acteristics makes the OP77 ideally suited for high-resolution
instrumentation and other tight error budget systems.
TO-99
(J-Suffix)
V
OS
TRIM
V
OS
TRIM 1
–IN 2
+IN 3
4V– (CASE)
NC = NO CONNECT
V+
OUT
NC
OP07
V+
7
NOTE:
R2A AND R2B ARE
ELECTRONICALLY
ADJUSTED ON CHIP
AT FACTORY.
Q7
Q5
NON-
INVERTING
INPUT
INVERTING
INPUT
3 R3
Q1
2 R4
Q21
Q22
Q23
Q24
Q2
Q13
Q3
Q6
R2A (OPTIONAL
NULL)
8
1
R1A
R2B
C1
R1B
Q19
Q9
Q8
Q4
Q27
Q26
Q25
Q14
R6
Q15
Q18
R8
C3
R5
Q11
Q12
C2
Q17
Q10
R9
R10
Q20
OUTPUT
6
R7
Q16
4
V–
REV. C
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2002
OP77–SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
(@ V =
s
15 V, T
A
= 25 C, unless otherwise noted.)
Conditions
Min
OP77A
Typ
10
Max
25
Unit
mV
mV/Mo
nA
2.0
0.6
18.0
13.0
11.0
30
0.80
0.23
0.17
nA
mV
p-p
nV/÷Hz
Parameter
INPUT OFFSET VOLTAGE
LONG-TERM INPUT OFFSET
VOLTAGE STABILITY
1
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
INPUT NOISE VOLTAGE
2
INPUT NOISE VOLTAGE DENSITY
2
Symbol
V
OS
DV
OS
/Time
I
OS
I
B
e
np-p
e
n
0.2
0.3
–0.2
0.1 Hz to 10 Hz
f
O
= 10 Hz
f
O
= 100 Hz
f
O
= 1000 Hz
0.1 Hz to10 Hz
f
O
= 10 Hz
f
O
= 100 Hz
f
O
= 1000 Hz
26
±
13
V
CM
=
±
13 V
V
S
=
±
3 V to
±
18 V
R
L
≥
2 kW
≥
VO =
±
10V
R
L
≥
10 kW
R
L
≥
2 kW
R
L
≥
1 kW
RL
≥
2 kW
A
VCL
= +1
V
S
=
±
15 V, No Load
V
S
=
±
3 V, No Load
R
P
= 20 kW
5000
±
13.5
±
12.5
±
12.0
0.1
0.4
1.2
0.35
10.3
10.0
9.6
14
0.32
0.14
0.12
45
200
±
14
0.1
0.7
12000
±
14.0
±
13.0
±
12.5
0.3
0.6
60
50
3.5
±
3
60
4.5
1.0
3
INPUT NOISE CURRENT
2
i
np-p
pA p-p
pA/÷Hz
INPUT NOISE CURRENT DENSITY
2
i
n
INPUT RESISTANCE
Differential Mode
3
Common Mode
INPUT VOLTAGE RANGE
COMMON-MODE
REJECTION RATIO
POWER SUPPLY
REJECTION RATIO
LARGE-SIGNAL
VOLTAGE GAIN
OUTPUT VOLTAGE SWING
R
IN
R
INCM
IVR
CMRR
PSRR
A
VO
V
O
MV
GV
V
mV/V
mV/V
V/mV
V
SLEW RATE
2
CLOSED-LOOP BANDWIDTH
2
SR
BW
V/ms
MHz
W
mW
mV
OPEN-LOOP OUTPUT RESISTANCE R
O
POWER CONSUMPTION
OFFSET ADJUSTMENT RANGE
P
d
NOTES
1
Long-Term Input Offset Voltage Stability refers to the averaged trend line of V
OS
vs. Time over extended periods after the first 30 days of operation. Excluding the
initial hour of operation, changes in V
OS
during the first 30 operating days are typically 2.5
mV.
2
Sample tested.
3
Guaranteed by design.
–2–
REV. C
OP77–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
(@ V =
s
15 V, T
A
= 125 C, unless otherwise noted.)
Min
OP77E
Typ Max
10
0.3
0.3
–0.2
1.2
0.35
10.3
10.0
9.6
14
0.32
0.14
0.12
26
45
200
200
13
14
0.1
0.7
5000
13.5
12.5
12.0
0.1
0.4
12000
14.0
13.0
12.5
0.3
0.6
60
1.0
3.0
2000
13.5
12.5
12.0
0.1
0.4
13
1.5
2.0
0.6
18.0
13.0
11.0
30
0.80
0.23
0.17
18.5
–0.2
25
Min
OP77F
Typ Max
20
0.4
0.3
1.2
0.38
10.5
10.2
9.8
15
0.35
0.15
0.13
45
200
200
14
0.1
0.7
6000
14.0
13.0
12.5
0.3
0.6
60
60
4.5
50
3.5
3
60
4.5
1.6
3.0
2.8
2.8
0.65
20.0
13.5
11.5
35
0.90
0.27
0.18
60
Unit
mV
mV/Mo
nA
nA
mV
p-p
nV/÷Hz
Parameter
INPUT OFFSET VOLTAGE
LONG-TERM
STABILITY
1
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
INPUT NOISE VOLTAGE
2
INPUT NOISE
VOLTAGE DENSITY
Symbol
VOS
V
OS
/Time
I
OS
I
B
e
np-p
e
n
Conditions
0.1 Hz to 10 Hz
f
O
= 10 Hz
f
O
= 100 Hz
2
f
O
= 1000 Hz
0.1 Hz to 10 Hz
f
O
= 10 Hz
f
O
= 100 Hz
2
f
O
= 1000 Hz
INPUT NOISE CURRENT
2
INPUT NOISE
CURRENT DENSITY
i
np-p
i
n
pA
p-p
pA÷Hz
INPUT RESISTANCE
Differential Mode
3
Common Mode
INPUT RESISTANCE
Common Mode
INPUT VOLTAGE RANGE
COMMON-MODE
REJECTION RATIO
POWER SUPPLY
REJECTION RATIO
LARGE-SIGNAL
VOLTAGE GAIN
OUTPUT VOLTAGE
SWING
R
IN
R
INCM
R
INCM
IVR
CMRR
PSRR
A
VO
V
O
V
CM
=
13 V
MW
GW
GW
V
mV/V
mV/V
V/mV
V
V
S
= 3 V to 18 V
R
L
≥
2 k
R
L
≥
10 k
R
L
≥
2 k
R
L
≥
1 k
R
L
≥
2 k
A
VCL
1
SLEW RATE
2
CLOSED-LOOP
BANDWIDTH
2
OPEN-LOOP OUTPUT
RESISTANCE
POWER CONSUMPTION
OFFSET ADJUSTMENT
RANGE
SR
BW
R
O
Pd
V/ms
MHz
W
mW
mV
V
S
=
V
S
=
15 V, No Load
3 V, No Load
50
3.5
3
Rp = 20 kn
NOTES
1
Long-Term Input Offset Voltage Stability refers to the averaged trend line of V
OS
vs. Time over extended periods after the first 30 days of operation. Excluding the
initial hour of operation, changes in V
OS
during the first 30 operating days are typically 2.5
mV.
2
Sample tested.
3
Guaranteed by design.
–4–
REV. C
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