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ISO120/ISO121 Datasheet

  • ISO120/ISO121

  • ISO120. ISO121 - Precision Low Cost ISOLATION AMPLIFIER

  • 14頁(yè)

  • ETC

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ISO120
ISO121
Precision Low Cost
ISOLATION AMPLIFIER
FEATURES
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q
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q
q
q
q
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100% TESTED FOR PARTIAL DISCHARGE
ISO120: Rated 1500Vrms
ISO121: Rated 3500Vrms
HIGH IMR: 115dB at 60Hz
USER CONTROL OF CARRIER
FREQUENCY
LOW NONLINEARITY:
0.01% max
BIPOLAR OPERATION: V
O
=
10V
0.3"-WIDE 24-PIN HERMETIC DIP, ISO120
SYNCHRONIZATION CAPABILITY
WIDE TEMP RANGE: 鈥?5
C to +125
C
(ISO120)
APPLICATIONS
q
INDUSTRIAL PROCESS CONTROL: Trans-
ducer Isolator for Thermocouples, RTDs,
Pressure Bridges, and Flow Meters, 4mA
to 20mA Loop Isolation
q
GROUND LOOP ELIMINATION
q
MOTOR AND SCR CONTROL
q
POWER MONITORING
q
ANALYTICAL MEASUREMENTS
q
BIOMEDICAL MEASUREMENTS
q
DATA ACQUISITION
q
TEST EQUIPMENT
DESCRIPTION
The ISO120 and ISO121 are precision isolation ampli-
fiers incorporating a novel duty cycle modulation-
demodulation technique. The signal is transmitted
digitally across a 2pF differential capacitive barrier.
With digital modulation the barrier characteristics do
not affect signal integrity, which results in excellent
reliability and good high frequency transient immu-
nity across the barrier. Both the amplifier and barrier
capacitors are housed in a hermetic DIP. The ISO120
and ISO121 differ only in package size and isolation
voltage rating.
These amplifiers are easy to use. No external compo-
nents are required for 60kHz bandwidth. With the
addition of two external capacitors, precision specifi-
cations of 0.01% max nonlinearity and 150碌V/擄C max
V
OS
drift are guaranteed with 6kHz bandwidth. A
power supply range of
鹵4.5V
to
鹵18V
and low quies-
cent current make these amplifiers ideal for a wide
range of applications.
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 1988 Burr-Brown Corporation
Isolation Barrier
C
1H
C
1L
V
IN
C
2H
C
2L
Sense
V
OUT
Signal
Com 1
Ext Osc
+V
S1
Gnd 1
鈥揤
S1
鈥揤
S2
Gnd 2
+V
S2
Signal
Com 2
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-820D
Printed in U.S.A. March, 1992

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