ISO113 Datasheet, PDF (1/8 Pages) Burr-Brown (TI) – Low-Cost, High-Voltage, Internally Powered OUTPUT ISOLATION AMPLIFIER

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ISO113
ISO113
Low-Cost, High-Voltage, Internally Powered
OUTPUT ISOLATION AMPLIFIER
FEATURES
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)
APPLICATIONS
q 4mA TO 20mA V/I CONVERTERS
q MOTOR AND VALVE CONTROLLERS
q ISOLATED RECORDER OUTPUTS
q MEDICAL INSTRUMENTATION OUTPUTS
q GAS ANALYZERS
DESCRIPTION
The ISO113 output isolation amplifier provides both
signal and output power across an isolation barrier in
a small double-wide DIP package. The ceramic non-
hermetic hybrid package with side-brazed pins con-
tains a transformer-coupled DC/ DC converter and a
capacitor-coupled signal channel.
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.
+V_CC1
V_IN
–V_CC1
Com 1
Sync*
Enable
Gnd 1
Duty Cycle Modulator
Sync
Oscillators, Driver
*Ground if not used
Duty Cycle Demodulator
Rectifiers, Filters
+V_C
Sense
V_OUT
Gnd 2
–V_C
+V_CC2
Ps Gnd
–V_CC2
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© 1989 Burr-Brown Corporation
PDS-844E
Printed in U.S.A. August, 1999