ISO107 Datasheet, PDF (1/8 Pages) Burr-Brown (TI) – High-Voltage, Internally Powered ISOLATION AMPLIFIER

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ISO107
High-Voltage, Internally Powered
ISOLATION AMPLIFIER
FEATURES
q SIGNAL AND POWER IN ONE
TRIPLE-WIDE PACKAGE
q 8000Vpk TEST VOLTAGE
q 2500Vrms CONTINUOUS AC BARRIER
RATING
q WIDE INPUT SIGNAL RANGE:
–10V to +10V
q WIDE BANDWIDTH: 20kHz Small Signal,
20kHz Full Power
q BUILT-IN ISOLATED POWER:
±10V to ±18V Input, ±50mA Output
q MULTICHANNEL SYNCHRONIZATION
CAPABILITY (TTL)
DESCRIPTION
The ISO107 isolation amplifier provides both signal
and power across an isolation barrier. The ceramic
side-brazed hybrid package contains a transformer-
coupled DC/DC converter and a capacitor-coupled
signal channel.
Extra power is available on the isolated input side for
external input conditioning circuitry. The converter is
protected from shorts to ground with an internal cur-
rent limit, and the soft-start feature limits the initial
currents from the power source. Multiple-channel syn-
chronization can be accomplished by applying a TTL
clock signal to paralleled Sync pins. The Enable con-
APPLICATIONS
q MULTICHANNEL ISOLATED DATA
ACQUISITION
q BIOMEDICAL INSTRUMENTATION
q POWER SUPPLY AND MOTOR CONTROL
q GROUND LOOP ELIMINATION
V_IN
Com 1
+V_CC1
Gnd 1
–V_CC1
ISO107 BLOCK DIAGRAM
Duty Cycle
Modulator
Sync
Rectifiers
Filters
Duty Cycle
Demodulator
Oscillator
Driver
Sense
V_OUT
Com 2
–V_CC2
Sync
+V_CC2
Enable
Gnd 2
trol is used to turn off transformer drive while keeping
the signal channel demodulator 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 2500Vrms continuous rating.
Reliability is assured by 100% barrier breakdown
testing that conforms to UL544 test methods. Low
barrier capacitance minimizes AC leakage currents.
These specifications and built-in features make the
ISO107 easy to use, as well as providing for compact
PC board layouts.
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]
© 1989 Burr-Brown Corporation
PDS-898C
Printed in U.S.A. October, 1993