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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
PM1012
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 1998
Low Power Precision
Operational Amplifier
FEATURES
Low Supply Current: 600 mA Max
Very Low Offset: 35 mV Max
Low Drift: 1.5 mV/8C Max
Very Low Bias Current
258C: 100 pA Max
Low Noise: 0.5mV p-p Typ
High Common-Mode Rejection: 114 dB Min
GENERAL DESCRIPTION
The PM1012 is a general purpose, precision operational ampli-
fier. Offering several performance enhancements over industry-
standard precision op amps such as the OP07, the PM1012
requires less than 1/6 the supply current. These enhancements
include exceptionally low bias currents of only ±80 pA, typical,
over the full military temperature range, and 132dB of com-
mon-mode rejection and power-supply rejection. The PM1012’s
low offset voltage of 35µV maximum frees the user from exter-
nal nulling in most circuits.
An open-loop gain of two million into a 10 kΩ load ensures that
excellent linearity is maintained even in high gain configura-
tions, and 5 mA of output current allows 2kΩ loads to be
driven with an open-loop gain of one million. The PM1012
offers low noise, especially for a low power amplifier—only
17 nV/√Hz at 10 Hz. Exceptionally low current noise minimizes
PIN CONNECTIONS
Plastic Mini-DIP (P Suffix)
8-Lead SO (S Suffix)
8
7
6
5
1
2
3
4
NULL
–IN
+IN
NULL
V+
OUT
OVER
COMP
V– PM1012
noise contributions when high source impedances are used. The
PM1012 may be overcompensated, using Pin 5 to limit the
amplifier’s bandwidth, further reducing system noise and in-
creasing stability with large capacitive loads.
The PM1012 conforms to the OP07 pinout with nulling through
Pins 1 and 8 to the positive supply. It offers an upgrade to the
OP07 in sockets where reduced power dissipation or low bias
currents are attractive. It may also be used as an upgrade from
the OP12, OP05 and 725 type op amps. The PM1012 may
replace 741 type op amps by removing the nulling potentiom-
eter, if used.
–2 – REV. C
PM1012–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
PM1012G
Parameter Symbol Conditions Min Typ Max Units
Input Offset Voltage V
OS
(Note 1) 10 50 µV
25 120 µV
Long-Term
V
OS
Stability ∆V
OS
/Time 0.3 µV/Month
Input Offset Current I
OS
(Note 1) 20 150 pA
30 200 pA
Input Bias Current I
B
(Note 1) ±30 ±150 pA
±40 ±200 pA
Input Noise Voltage e
n
p-p 0.1 Hz to 10 Hz 0.5 µV p-p
Input Noise Voltage Density e
n
f
O
= 10 Hz
2
17 30 nV/√Hz
f
O
= 1000 Hz
3
14 22 nV/√Hz
Input Noise Current Density I
n
f
O
= 10 Hz 20 fA/√Hz
Large-Signal Voltage Gain A
VO
V
O
= ±12 V; R
L
= 10 k Ω200 2000 V/mV
V
O
= ±10 V; R
L
= 2 kΩ120 1000 V/mV
Common-Mode Rejection CMR V
CM
= ±13.5 V 110 132 dB
Power-Supply Rejection PSR V
S
= ±2 V to ±20 V 110 132 dB
Input Voltage Range IVR (Note 4) ±13.5 ±14.0 V
Output Voltage Swing V
O
R
L
= 10 kΩ±13 ±14 V
Slew Rate SR 0.1 0.2 V/µs
Full-Power Bandwidth BW
P
3 kHz
Gain Bandwidth Product GBW A
V
= +100 0.5 MHz
Supply Current I
SY
(Note 1) 380 600 µA
Supply Voltage V
S
Operating Range ±2±15 ±20 V
NOTES
1
These specifications apply for ±2 V ≤ V
S
≤ ±20 V and –13.5 V ≤ V
CM
≤ +13.5 V (for V
S
= ±15 V).
2
10 Hz noise voltage density is sample tested. Devices 100% tested for noise are available on request.
3
Sample tested.
4
Guaranteed by CMR test.
Specifications subject to change without notice.
(@ VS = 615 V, VCM = 0 V, TA = +258C, unless otherwise noted)
ELECTRICAL CHARACTERISTICS
PM1012G
Parameter Symbol Conditions Min Typ Max Units
Input Offset Voltage V
OS
20 120 µV
30 200 µV
Average Temperature TCV
OS
(Note 1)
Coefficient of V
OS
0.2 1.5 µV/°C
Input Offset Current I
OS
(Note 1) 20 230 pA
40 300 pA
Average Temperature TCI
OS
Coefficient of I
OS
0.3 2.5 pA/°C
Input Bias Current I
B
(Note 1) ±35 ±230 pA
±50 ±300 pA
Average Temperature
Coefficient of I
B
TCI
B
0.3 2.5 pA/°C
Large Signal Voltage Gain A
VO
V
O
= ±12 V; R
L
= 10 k Ω150 1500 V/mV
V
O
= ±10 V; R
L
= 2 kΩ100 800 V/mV
Common-Mode Rejection CMR V
CM
= ±13.5 V 108 130 dB
Power Supply Rejection PSR V
S
= ±2.5 V to ±20 V 108 128 dB
Input Voltage Range IVR (Note 2) ±13.5 ±14.0 V
Output Voltage Swing V
O
R
L
= 10 kΩ±13 ±14 V
Slew Rate SR 0.05 0.15 V/µs
Supply Current I
SY
(Note 1) 400 800 µA
Supply Voltage V
S
Operating Range ±2.5 ±15 ±20 V
NOTES
1
These specifications apply for ±2.5 V ≤ V
S
≤ ±20 V and –13.5 V ≤ V
CM
≤ +13.5 V (for V
S
= ±15 V).
2
Guaranteed by CMR test.
Specifications subject to change without notice.
(@ VS = 615 V, VCM = 0 V, –408C ≤ TA ≤ +858C for PM1012GP, GS, unless otherwise noted)
PM1012
–3–REV. C
ABSOLUTE MAXIMUM RATINGS
1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 V
Input Voltage
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 V
Differential Input Voltage
3
. . . . . . . . . . . . . . . . . . . . . . ±1 V
Differential Input Current
3
. . . . . . . . . . . . . . . . . . . . ±10 mA
Output Short-Circuit Duration . . . . . . . . . . . . . . . . Indefinite
Operating Temperature Range
PM1012G (P, S) . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Junction Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 60 sec) . . . . . . . . . . . +300°C
Package Type u
JA4
u
JC
Units
8-Lead Plastic DIP (P) 103 43 °C/W
8-Lead SO (S) 158 43 °C/W
ORDERING GUIDE
Temperature Package Package
Model Range Description Options
PM1012GP –40°C to +85°C Plastic DIP N-8
PM1012GS –40°C to +85°C SOIC SO-8
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the PM1012 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
NOTES
1
Absolute maximum ratings apply to both DICE and packaged parts, unless
otherwise noted.
2
For supply voltages less than ±20 V, the absolute maximum input voltage is equal
to the supply voltage.
3
The PM1012’s inputs are protected by back-to-back diodes. Current-limiting
resistors are not used in order to achieve low noise. Differential input voltages
greater than 1 V will cause excessive current to flow through the input protection
diodes unless limiting resistance is used.
4
θ
JA
is specified for worst case mounting conditions, i.e., θ
JA
is specified for device
in socket for cerdip, and P-DIP packages; θ
JA
is specified for device soldered to
printed circuit board for SO package.
PM1012
–4– REV. C
C3190–2.5–2/98
PRINTED IN U.S.A.
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
8-Lead Plastic DIP
(N-8)
8
14
5
0.430 (10.92)
0.348 (8.84)
0.280 (7.11)
0.240 (6.10)
PIN 1
SEATING
PLANE
0.022 (0.558)
0.014 (0.356)
0.060 (1.52)
0.015 (0.38)
0.210 (5.33)
MAX 0.130
(3.30)
MIN
0.070 (1.77)
0.045 (1.15)
0.100
(2.54)
BSC
0.160 (4.06)
0.115 (2.93)
0.325 (8.25)
0.300 (7.62)
0.015 (0.381)
0.008 (0.204)
0.195 (4.95)
0.115 (2.93)
8-Lead SOIC
(SO-8)
0.1968 (5.00)
0.1890 (4.80)
85
41
0.2440 (6.20)
0.2284 (5.80)
PIN 1
0.1574 (4.00)
0.1497 (3.80)
0.0688 (1.75)
0.0532 (1.35)
SEATING
PLANE
0.0098 (0.25)
0.0040 (0.10)
0.0192 (0.49)
0.0138 (0.35)
0.0500
(1.27)
BSC 0.0098 (0.25)
0.0075 (0.19) 0.0500 (1.27)
0.0160 (0.41)
88
08
0.0196 (0.50)
0.0099 (0.25) x 458
