Analog Devices PM1012 Datasheet

Low Power Precision

a

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 ampli­fier. Offering several performance enhancements over industry­standard 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 com­mon-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 configura­tions, and 5 mA of output current allows 2k Ω 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

Operational Amplifier

PM1012

PIN CONNECTIONS

Plastic Mini-DIP (P Suffix)

8-Lead SO (S Suffix)

1

NULL

2

–IN

3

+IN

4

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 in­creasing 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 potentiom­eter, if used.

8

7

6

5

NULL
V+
OUT

OVER
COMP

REV. C

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Fax: [phone] © Analog Devices, Inc., 1998

PM1012–SPECIFICA TIONS

ELECTRICAL CHARACTERISTICS

(@ VS = 615 V, V

= 0 V, TA = +258C, unless otherwise noted)

CM

PM1012G

Parameter Symbol Conditions Min Typ Max Units

Input Offset Voltage V

OS

(Note 1) 10 50 µV

25 120 µV

Long-Term

V

Stability ∆ VOS/Time 0.3 µV/Month

OS

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
Input Noise Voltage Density e

Input Noise Current Density I
Large-Signal Voltage Gain A

Common-Mode Rejection CMR V
Power-Supply Rejection PSR V

p-p 0.1 Hz to 10 Hz 0.5 µV p-p

n

n

n

VO

fO = 10 Hz
f

= 1000 Hz

O

fO = 10 Hz 20 fA/√Hz
VO = ±12 V; RL = 10 kΩ 200 2000 V/mV
V

O
CM
S

2

3

17 30 nV/√Hz

14 22 nV/√Hz

= ±10 V; RL = 2 kΩ 120 1000 V/mV

= ±13.5 V 110 132 dB

= ± 2 V to ±20 V 110 132 dB
Input Voltage Range IVR (Note 4) ±13.5 ±14.0 V
Output Voltage Swing V

O

RL = 10 kΩ±13 ±14 V
Slew Rate SR 0.1 0.2 V/µs
Full-Power Bandwidth BW
Gain Bandwidth Product GBW A
Supply Current I

Supply Voltage V

NOTES

1

These specifications apply for ±2 V ≤ VS ≤ ±20 V and –13.5 V ≤ VCM ≤ +13.5 V (for VS = ±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.

P

SY

S

= +100 0.5 MHz

V

(Note 1) 380 600 µA

Operating Range ±2 ±15 ± 20 V

3 kHz

ELECTRICAL CHARACTERISTICS

(@ VS = 615 V, VCM = 0 V, –408C ≤ TA ≤ +858C for PM1012GP, GS, unless otherwise noted)

PM1012G

Parameter Symbol Conditions Min Typ Max Units

Input Offset Voltage V

OS

20 120 µV
30 200 µV

Average Temperature TCV

Coefficient of V

Input Offset Current I

OS

OS

OS

(Note 1)

0.2 1.5 µV/°C

(Note 1) 20 230 pA

40 300 pA
Average Temperature TCI
Coefficient of I

OS

Input Bias Current I

OS

0.3 2.5 pA/°C

B

(Note 1) ±35 ± 230 pA

±50 ± 300 pA
Average Temperature

Coefficient of I

B

Large Signal Voltage Gain A
Common-Mode Rejection CMR V

Power Supply Rejection PSR V

TCI

VO

B

0.3 2.5 pA/°C
VO = ±12 V; RL = 10 kΩ 150 1500 V/mV
V

= ±10 V; RL = 2 kΩ 100 800 V/mV

O

= ±13.5 V 108 130 dB

CM

= ± 2.5 V to ±20 V 108 128 dB

S

Input Voltage Range IVR (Note 2) ±13.5 ±14.0 V
Output Voltage Swing V

O

RL = 10 kΩ±13 ±14 V

Slew Rate SR 0.05 0.15 V/µs
Supply Current I
Supply Voltage V

NOTES

1

These specifications apply for ±2.5 V ≤ VS ≤ ±20 V and –13.5 V ≤ VCM ≤ +13.5 V (for VS = ±15 V).

2

Guaranteed by CMR test.

Specifications subject to change without notice.

SY

S

(Note 1) 400 800 µA
Operating Range ±2.5 ±15 ±20 V

–2– REV. C