®
3656
Transformer Coupled
ISOLATION AMPLIFIER
FEATURES
q
INTERNAL ISOLATED POWER
q
8000V ISOLATION TEST VOLTAGE
q
0.5
µ
A MAX LEAKAGE AT 120V, 60Hz
q
3-PORT ISOLATION
q
IMR: 125dB REJECTION AT 60Hz
q
1" x 1" x 0.25" CERAMIC PACKAGE
APPLICATIONS
q
MEDICAL
Patient Monitoring and Diagnostic
Instrumentation
q
INDUSTRIAL
Ground Loop Elimination and
Off-ground Signal Measurement
q
NUCLEAR
Input/Output/Power Isolation
DESCRIPTION
The 3656 was the first amplifier to provide a total
isolation function, both signal and power isolation, in
integrated circuit form. This remarkable advancement
in analog signal processing capability was accom-
plished by use of a patented modulation technique and
miniature hybrid transformer.
Versatility and performance are outstanding features
of the 3656. It is capable of operating with three
completely independent grounds (three-port isolation).
In addition, the isolated power generated is available
to power external circuitry at either the input or
output. The uncommitted op amps at the input and the
output allow a wide variety of closed-loop configura-
tions to match the requirements of many different
types of isolation applications.
Input
Demodulator
Pulse
Generator
+
–
Modulator
Output
Demodulator
Input
ISO
Power
Rectifiers
and
Filters
Rectifiers
and
Filters
Output
ISO
Power
This product is covered by the following United States patents: 4,066,974; 4,103,267; 4,082,908. Other patents pending may also apply upon the
allowance and issuance of patents thereon. The product may also be covered in other countries by one or more international patents corresponding
to the above-identified U.S. patents.
InternationalAirportIndustrialPark • MailingAddress:POBox11400,Tucson,AZ85734 • StreetAddress:6730S.TucsonBlvd.,Tucson,AZ 85706 • Tel:(520)746-1111 • Twx:910-952-1111
Internet:http://www.burr-brown.com/ • FAXLine:(800)548-6133(US/CanadaOnly) • Cable:BBRCORP • Telex:066-6491 • FAX:(520)889-1510 • ImmediateProductInfo:(800)548-6132
®
©
1987 Burr-Brown Corporation
PDS-403G
1
Printed in U.S.A. January, 1997
3656
SBOS132
BURR-BROWN [ BURR-BROWN CORPORATION ]
