®
ISO113
ISO
113
Low-Cost, High-Voltage, Internally Powered
OUTPUT ISOLATION AMPLIFIER
FEATURES
DESCRIPTION
q SELF-CONTAINED ISOLATED SIGNAL
AND OUTPUT POWER
q SMALL PACKAGE SIZE: Double-Wide
(0.6") Sidebraze DIP
q CONTINUOUS AC BARRIER RATING:
1500Vrms
q WIDE BANDWIDTH: 20kHz Small Signal,
20kHz Full Power
q BUILT-IN ISOLATED OUTPUT POWER:
±10V to ±18V Input, ±50mA Output
q MULTICHANNEL SYNCHRONIZATION
CAPABILITY
q BOARD AREA ONLY 0.72in.2 (4.6cm2)
The ISO113 output isolation amplifier provides both
signal and output power across an isolation barrier in
a small double-wide DIP package. The ceramic nonhermetic hybrid package with side-brazed pins contains a transformer-coupled DC/ DC converter and a
capacitor-coupled signal channel.
APPLICATIONS
q
q
q
q
q
4mA TO 20mA V/I CONVERTERS
MOTOR AND VALVE CONTROLLERS
ISOLATED RECORDER OUTPUTS
MEDICAL INSTRUMENTATION OUTPUTS
GAS ANALYZERS
Extra power is available on the isolated output side for
driving external loads. The converter is protected from
shorts to ground with an internal current limit, and the
soft-start feature limits the initial currents from the
power source. Multiple-channel synchronization can
be accomplished by applying a TTL clock signal to
paralleled Sync pins. The Enable control is used to
turn off transformer drive while keeping the signal
channel modulator active. This feature provides a
convenient way to reduce quiescent current for low
power applications.
The wide barrier pin spacing and internal insulation
allow for the generous 1500Vrms continuous rating.
Reliability is assured by 100% barrier breakdown
testing that conforms to UL1244 test methods. Low
barrier capacitance minimizes AC leakage currents.
These specifications and built-in features make the
ISO113 easy to use, and provides for compact PC
board layout.
+VCC1
V IN
Duty Cycle Demodulator
Duty Cycle Modulator
–VCC1
Sync
Com 1
Sync*
Enable
+VC
Sense
V OUT
Gnd 2
–VC
+VCC2
Oscillators, Driver
Rectifiers, Filters
Ps Gnd
–VCC2
Gnd 1
*Ground if not used
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/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1989 Burr-Brown Corporation
PDS-844E
Printed in U.S.A. August, 1999