1
®
3650/52
3650
3652
Optically-Coupled Linear
ISOLATION AMPLIFIERS
FEATURES
● BALANCED INPUT
● LARGE COMMON-MODE VOLTAGES:
±2000V Continuous
140dB Rejection
● ULTRA LOW LEAKAGE:
0.35
µA max at 240V/60Hz
1.8pF Leakage Capacitance
● EXCELLENT GAIN ACCURACY:
0.05% Linearity
0.05%/1000 Hrs Stability
● WIDE BANDWIDTH:
15kHz
±3dB
1.2V/µs Slew Rate
APPLICATIONS
● INDUSTRIAL PROCESS CONTROL
● DATA ACQUISITION
● INTERFACE ELEMENT
● BIOMEDICAL MEASUREMENTS
● PATIENT MONITORING
● TEST EQUIPMENT
● CURRENT SHUNT MEASUREMENT
● GROUND-LOOP ELIMINATION
● SCR CONTROLS
DESCRIPTION
The 3650 and 3652 are optically coupled integrated
circuit isolation amplifiers. Prior to their introduction
commercially available isolation amplifiers had been
modular or rack mounted devices using transformer
coupled modulation demodulation techniques.
Compared to these earlier isolation amplifiers, the
3650 and 3652 have the advantage of smaller size,
lower cost, wider bandwidth and integrated circuit
reliability. Also, because they use a DC analog modu-
lation technique as opposed to a carrier-type tech-
nique, they avoid the problems of electro-
magnetic interference (both transmitted and received)
that most of the modular isolation amplifiers exhibit.
A
1
A
1
11
10
8
9
Light
Flux
Coupling
23
A
3
A
4
1.6MΩ
1.6MΩ
R
G1
R
G2
R
IN
3652 Only Common to 3650 and 3652
3
1
6
4
®
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©
1976 Burr-Brown Corporation PDS-342L Printed in U.S.A. August, 1997
SBOS129
