ISO130
iSO
1
30
SBOS220 – OCTOBER 2001
High IMR, Low Cost
ISOLATION AMPLIFIER
FEATURES
q
HIGH ISOLATION-MODE REJECTION:
10kV/
µ
s (min)
q
LARGE SIGNAL BANDWIDTH: 85kHz (typ)
q
DIFFERENTIAL INPUT/DIFFERENTIAL OUTPUT
q
VOLTAGE OFFSET DRIFT vs
TEMPERATURE: 4.6
µ
V/
°
C (typ)
q
OFFSET VOLTAGE 1.8mV (max)
q
INPUT REFERRED NOISE: 300
µ
Vrms (typ)
q
NONLINEARITY: 0.25% (max)
q
SINGLE SUPPLY OPERATION
q
SIGMA-DELTA A/D CONVERTER
TECHNOLOGY
q
WORLDWIDE SAFETY APPROVAL:
UL1577 (File No. E162573), VDE0884
(File No. 85511), CSA22.2 (File No. 88324)
q
AVAILABLE IN 8-PIN PLASTIC DIP and
8-PIN GULL-WING PLASTIC SURFACE MOUNT
APPLICATIONS
q
MOTOR AND SCR CONTROL
q
MOTOR PHASE CURRENT SENSING
q
INDUSTRIAL PROCESS CONTROL:
Transducer Isolator, Isolator for
Thermocouples, RTDs
q
GENERAL PURPOSE ANALOG SIGNAL
ISOLATION
q
POWER MONITORING
q
GROUND LOOP ELIMINATION
DESCRIPTION
The ISO130 is a high isolation-mode rejection, isolation
amplifier suited for motor control applications. Its versatile
design provides the precision and stability needed to accu-
rately monitor motor currents in high-noise motor control
environments. The ISO130 can also be used for general
analog signal isolation applications requiring stability and
linearity under severe noise conditions.
The signal is transmitted digitally across the isolation barrier
optically, using a high-speed AlGaAs LED. The remainder
of the ISO130 is fabricated on 1µm CMOS IC process. A
sigma-delta analog-to-digital converter, chopper stabilized
amplifiers and differential input and output topologies make
the isolation amplifier suitable for a variety of applications.
The ISO130 is easy to use. No external components are
required for operation. The key specifications are 10kV/µs
isolation-mode rejection, 85kHz large signal bandwidth, and
4.6µV/°C V
OS
drift. A single power supply ranging from
+4.5V to +5.5V makes this amplifier ideal for low power
isolation applications.
The ISO130 is available in 8-pin plastic DIP and 8-pin
plastic gull-wing surface mount packages.
V
S1
1
8
V
S2
V
IN+
2
7
V
OUT+
V
IN–
3
6
V
OUT–
GND
1
4
5
GND
2
IMR SHIELD
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1994, Texas Instruments Incorporated
www.ti.com
ETC [ ETC ]
