Burr Brown OPA512SM, OPA512BM Datasheet

®

Very-High Current—High Power

OPERATIONAL AMPLIFIER

OPA512

FEATURES

● WIDE SUPPLY RANGE: ±10V to ±50V

● HIGH OUTPUT CURRENT: 15A Peak

● CLASS A/B OUTPUT STAGE:

Low Distortion

● VOLTAGE-CURRENT LIMIT PROTECTION

CIRCUIT

● SMALL TO-3 PACKAGE

DESCRIPTION

The OPA512 is a high voltage, very-high current
operational amplifier designed to drive a wide variety
of resistive and reactive loads. Its complementary
class A/B output stage provides superior performance
in applications requiring freedom from cross-over
distortion. User-set current limit circuitry provides
protection to the amplifier and load in fault conditions.
A resistor-programmable voltage-current limiter
circuit may be used to further protect the amplifier
from damaging conditions.

3+V

APPLICATIONS

● SERVO AMPLIFIER

● MOTOR DRIVER

● SYNCRO EXCITATION

● AUDIO AMPLIFIER

● TEST PIN DRIVER

The OPA512 employs a laser-trimmed monolithic
integrated circuit to bias the output transistors, provid­ing excellent low-level signal fidelity and high output
voltage swing. The reduced internal parts count made
possible with this monolithic IC improves perfor­mance and reliability.

This hybrid integrated circuit is housed in a hermetic
TO-3 package and all circuitry is electrically-isolated
from the case. This allows direct mounting to a chassis
or heat sink without cumbersome insulating hardware
and provides optimum heat transfer.

S

2



4

Bias

5

International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706

Tel: [phone] • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

©

1985 Burr-Brown Corporation PDS-600B Printed in U.S.A. December, 1993

Circuit

–V

6

S

1



7



8

R

CL+



R

CL–

R

VI

(Optional)

Out

SPECIFICATIONS

ELECTRICAL

At TC = +25°C, and VS = ±40V, unless otherwise noted.

OPA512BM OPA512SM
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
INPUT OFFSET VOLTAGE

Initial Offset ±2 ±6 ±1 ±3mV
vs Temperature Specified Temp. Range ±10 ±65 * ±40 µV/°C
vs Supply Voltage ±30 ±200 * * µV/V
vs Power ±20 * µV/V

INPUT BIAS CURRENT
Initial 12 30 10 20 nA
vs Temperature Specified Temp. Range ±50 400 * * pA/°C
vs Supply Voltage ±10 * pA/V

INPUT OFFSET CURRENT
Initial ±12 ±30 ±5 ±10 nA
vs Temperature Specfied Temp. Range ±50 * pA/°C

INPUT IMPEDANCE, DC 200 * MΩ
INPUT CAPACITANCE 3 * pF
VOLTAGE RANGE

Common-Mode Voltage Specified Temp. Range ±(|V
Common-Mode Rejection Specified Temp. Range 74 100 * * dB

GAIN

Open-Loop Gain at 10Hz 1kΩ Load 110 * dB

Specified Temp. Range

8Ω Load 96 108 * * dB
Gain-Bandwidth Product, 1MHz 8Ω Load 4 * MHz
Power Bandwidth 8Ω Load 13 20 * * kHz
Phase Margin Specified Temp. Range

8Ω Load 20 * Degrees

OUTPUT

Voltage Swing

(1)

BM at 10A, SM at 15A ±(|VS| – 6) ±(|VS| – 7) V

Specified Temp. Range

I

= 80mA ±(|VS| – 5) * V

O

I

= 5A ±(|VS| – 5) * V

Current, Peak 10 15 A

O

Settling Time to 0.1% 2V Step 2 * µs
Slew Rate 2.5 4 * * V/µs
Capacitive Load Specified Temp. Range

G = 1 1.5 * nF

Specified Temp. Range

G > 10 SOA

POWER SUPPLY

Voltage Specified Temp. Range ±10 ±40 ±45 * * ±50 V
Current, Quiescent 25 50 * 35 mA

THERMAL RESISTANCE

AC Junction-to-Case

(3)

TC = –55°C to +125°C,

f > 60Hz 0.8 0.9 * * °C/W
DC Junction-to-Case T
Junction to Air T

= –55°C to +125°C 1.25 1.4 * * °C/W

C

= –55°C to +125°C30 * °C/W

C

TEMPERATURE RANGE

Specified T

C

*Specification same as OPA512BM.
NOTES: (1) +V
(3) Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz.

and –VS denote the postive and negative supply voltage, respectively. Total VS is measured from +VS to –VS. (2) SOA = Safe Operating Area.

S

| – 5) ±(|VS| – 3) * * V

S

(2)

*

–25 +85 –55 +125 °C

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.

®

OPA512

2