廬
ISO
165
ISO165
ISO175
ISO
175
Precision, Isolated
INSTRUMENTATION AMPLIFIER
FEATURES
q
RATED
1500Vrms Continuous
2500Vrms for One Minute
100% TESTED FOR PARTIAL DISCHARGE
q
HIGH IMR: 115dB at 50Hz
q
LOW NONLINEARITY:
鹵
0.01%
q
LOW INPUT BIAS CURRENT: 10nA max
q
LOW INPUT OFFSET VOLTAGE: 101mV max
q
INPUTS PROTECTED TO
鹵
40V
q
BIPOLAR OPERATION: V
O
=
鹵
10V
q
SYNCHRONIZATION CAPABILITY
q
24-PIN PLASTIC DIP: 0.3" Wide
DESCRIPTION
ISO165 and ISO175 are precision isolated instrumen-
tation amplifiers incorporating a novel duty cycle
modulation-demodulation technique and excellent ac-
curacy. A single external resistor sets the gain. Internal
input protection can withstand up to
鹵40V
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. Both
the amplifier and barrier capacitors are housed in a
plastic DIP. ISO165 and ISO175 differ in frequency
response and linearity.
These amplifiers are easy to use. A power supply
range of
鹵4.5V
to
鹵18V
makes these amplifiers ideal
for a wide range of applications.
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
q
MEDICAL INSTRUMENTATION
q
ANALYTICAL MEASUREMENTS
q
BIOMEDICAL MEASUREMENTS
q
DATA ACQUISITION
q
TEST EQUIPMENT
q
POWER MONITORING
q
GROUND LOOP ELIMINATION
5
Shield 1
1
22
V
IN鈥?/div>
FBP
21
Ext Osc
4
+V
S1
15
+V
S2
14
Shield 2
V
OUT
2
24
FBN
V
IN+
Com1
23
GND1
20
鈥揤
S1
3
鈥揤
S2
13
Com2
11
10
GND2
12
International Airport Industrial Park 鈥?Mailing Address: PO Box 11400 鈥?Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd. 鈥?Tucson, AZ 85706
Tel: (520) 746-1111 鈥?Twx: 910-952-1111 鈥?Cable: BBRCORP 鈥?Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132
漏
1996 Burr-Brown Corporation
PDS-1293
Printed in U.S.A. May, 1996
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