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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
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WIDE INPUT SIGNAL RANGE:
鈥?0V to +10V
q
WIDE BANDWIDTH: 20kHz Small Signal,
20kHz Full Power
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BUILT-IN ISOLATED POWER:
鹵
10V to
鹵
18V Input,
鹵
50mA Output
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MULTICHANNEL SYNCHRONIZATION
CAPABILITY (TTL)
APPLICATIONS
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MULTICHANNEL ISOLATED DATA
ACQUISITION
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BIOMEDICAL INSTRUMENTATION
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POWER SUPPLY AND MOTOR CONTROL
q
GROUND LOOP ELIMINATION
ISO107 BLOCK DIAGRAM
Sense
V
IN
Duty Cycle
Modulator
Sync
Duty Cycle
Demodulator
V
OUT
Com 2
鈥揤
CC2
Sync
+V
CC2
Oscillator
Driver
Enable
Gnd 2
Com 1
+V
CC1
Gnd 1
鈥揤
CC1
Rectifiers
Filters
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-
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 鈥?Mailing Address: PO Box 11400
Tel: (520) 746-1111 鈥?Twx: 910-952-1111 鈥?Cable: BBRCORP 鈥?/div>
漏 1989 Burr-Brown Corporation
鈥?Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd. 鈥?Tucson, AZ 85706
Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132
PDS-898C
Printed in U.S.A. October, 1993
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