ISO124 Datasheet, PDF (1/28 Pages) Burr-Brown (TI) – Precision Lowest Cost ISOLATION AMPLIFIER

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ISO124
SBOS074D – SEPTEMBER 1997 – REVISED JULY 2016
ISO124 Precision Lowest-Cost Isolation Amplifier
1 Features
•1 100% Tested for High-Voltage Breakdown
• Rated 1500 Vrms
• High IMR: 140 dB at 60 Hz
• 0.010% Maximum Nonlinearity
• Bipolar Operation: V_O = ±10 V
• DIP-16 and SO-28
• Ease of Use: Fixed Unity Gain Configuration
• ±4.5-V to ±18-V Supply Range
2 Applications
• Industrial Process Control:
– Transducer Isolator, Isolator for
Thermocouples, RTDs, Pressure Bridges, and
Flow Meters, 4-mA to 20-mA Loop Isolation
• Ground Loop Elimination
• Motor and SCR Control
• Power Monitoring
• PC-Based Data Acquisition
• Test Equipment
3 Description
The ISO124 is a precision isolation amplifier
incorporating a novel duty cycle modulation-
demodulation technique. The signal is transmitted
digitally across a 2-pF differential capacitive barrier.
With digital modulation, the barrier characteristics do
not affect signal integrity, thus resulting in excellent
reliability and good high-frequency transient immunity
across the barrier. Both barrier capacitors are
imbedded in the plastic body of the package.
The ISO124 is easy to use. No external components
are required for operation. The key specifications are
0.010% maximum nonlinearity, 50-kHz signal
bandwidth, and 200-µV/°C V_OS drift. A power supply
range of ±4.5 V to ±18 V and quiescent currents of ±5
mA on V_S1 and ±5.5 mA on V_S2 make the ISO124
device ideal for a wide range of applications.
The ISO124 is available in SOIC-16 and SOIC-28
plastic surface-mount packages.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ISO124
SOIC (16)
SOIC (28)
17.90 mm × 7.50 mm
20.01 mm × 6.61 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
V_IN
V_OUT
–V_S2
Gnd 2
+V_S2
–V_S1
Gnd 1
+V_S1
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.