廬
ISO
ISO254
254
Precision, Powered, Three-Port Isolated
PROGRAMMABLE GAIN AMPLIFIER
FEATURES
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RATED
1500Vrms Continuous
2500Vrms for One Minute
100% TESTED FOR PARTIAL DISCHARGE
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PROGRAMMABLE GAINS OF
1, 10, 100, 1000
q
LOW NONLINEARITY:
鹵
0.01% typ
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LOW INPUT BIAS CURRENT:
鹵
5nA max
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LOW INPUT OFFSET VOLTAGE:
625
碌
V max
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INPUTS PROTECTED TO
鹵
40V
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BIPOLAR OPERATION: V
O
=
鹵
10V
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SYNCHRONIZATION CAPABILITY
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28-PIN PLASTIC DIP: 0.6" Wide
DESCRIPTION
ISO254 is a precision three-port isolated program-
mable gain instrumentation amplifier incorporating a
novel duty cycle modulation-demodulation technique
and has excellent accuracy. Internal input protection
can withstand up to
鹵40V
input differential without
damage. The signal is transmitted digitally across a
differential capacitive barrier. With digital modulation
the barrier characteristics do not affect signal integrity.
This results in excellent reliability and good high
frequency transient immunity across the barrier. The
DC/DC converter, amplifier and barrier capacitors are
housed in a plastic DIP.
This amplifier is easy to use as no external compo-
nents are required. A power supply range of 11V to
18V makes this amplifier ideal for a wide range of
applications.
2
A1
+V
IN
V
OUT
1
A0
ISO254
APPLICATIONS
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INDUSTRIAL PROCESS CONTROL
Transducer Isolator, Thermocouple
Isolator, RTD Isolator, Pressure Bridge
Isolator, Flow Meter Isolator
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POWER MONITORING
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MEDICAL INSTRUMENTATION
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ANALYTICAL MEASUREMENTS
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BIOMEDICAL MEASUREMENTS
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DATA ACQUISITION
q
TEST EQUIPMENT
q
GROUND LOOP ELIMINATION
3
PGA
4
鈥揤
IN
14
26
28
27
25
Com1
+V
S1
鈥揤
S1
GND1
Com2
+V
S2
鈥揤
S2
GND2
13
12
11
10
GND3 SYNC
17
16
+V
S3
15
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
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-1308B
Printed in U.S.A. April, 1996
1996 Burr-Brown Corporation
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