ISOLATION AMPLIFIER. ISO100 Datasheet

ISO100 AMPLIFIER. Datasheet pdf. Equivalent

Part ISO100
Description Optically-Coupled Linear ISOLATION AMPLIFIER
Feature ISO 100 ISO100 Optically-Coupled Linear ISOLATION AMPLIFIER FEATURES q EASY TO USE, SIMILAR TO AN.
Manufacture Burr-Brown Corporation
Datasheet
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ISO100
ISO100
ISO100
Optically-Coupled Linear
ISOLATION AMPLIFIER
FEATURES
q EASY TO USE, SIMILAR TO AN OP AMP
VOUT/IIN = RF, Current Input
VOUT/VIN = RF/RIN, Voltage Input
q 100% TESTED FOR BREAKDOWN:
750V Continuous Isolation Voltage
q ULTRA-LOW LEAKAGE: 0.3µA, max, at
240V/60Hz
q WIDE BANDWIDTH: 60kHz
q 18-PIN DIP PACKAGE
APPLICATIONS
q INDUSTRIAL PROCESS CONTROL
Transducer Sensing
(Thermocouples, RTD, Pressure Bridges)
4mA to 20mA Loops
Motor and SCR Control
Ground Loop Elimination
q BIOMEDICAL MEASUREMENTS
q TEST EQUIPMENT
q DATA ACQUISITION
DESCRIPTION
The ISO100 is an optically-coupled isolation ampli-
fier. High accuracy, linearity, and time-temperature
stability are achieved by coupling light from an LED
back to the input (negative feedback) as well as for-
ward to the output. Optical components are carefully
matched and the amplifier is actively laser-trimmed to
assure excellent tracking and low offset errors.
The circuit acts as a current-to-voltage converter with
a minimum of 750V (2500V test) between input and
output terminals. It also effectively breaks the gal-
vanic connection between input and output commons
as indicated by the ultra-low 60Hz leakage current of
0.3µA at 250V. Voltage input operation is easily
achieved by using one external resistor.
Versatility along with outstanding DC and AC perfor-
mance provide excellent solutions to a variety of
challenging isolation problems. For example, the
ISO100 is capable of operating in many modes, in-
cluding: noninverting (unipolar and bipolar) and in-
verting (unipolar and bipolar) configurations. Two
precision current sources are provided to accomplish
bipolar operation. Since these are not required for
unipolar operation, they are available for external use
(see Applications section).
Designs using the ISO100 are easily accomplished
with relatively few external components. Since VOUT
of the ISO100 is simply IINRF, gains can be changed
by altering one resistor value. In addition, the ISO100
has sufficient bandwidth (DC to 60kHz) to amplify
most industrial and test equipment signals.
IREF1 Balance
16 13 14
RF IREF2 Balance
7 856
+In 15
–In 17
A1
A2 3 VOUT
D1
LED
D2
12 10 18
9 42
–VCC +VCC
Input
Output –VCC +VCC
Common
Common
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1982 Burr-Brown Corporation
PDS1-456G
ISO100Printed in U.S.A. August, 1997



ISO100
SPECIFICATIONS
ELECTRICAL
At TA = +25°C and ±VCC = 15VDC, unless otherwise specified.
ISO100AP
PARAMETER
CONDITIONS
MIN TYP MAX
ISOLATION
Voltage
Rated Continuous, AC peak or DC(1)
Test Breakdown, DC
10s
Rejection(2) DC
AC
Impedance
RIN = 10k, Gain = 100
60Hz, 480V, RF = 1M
RIN = 10k, Gain = 100
Leakage Current
240Vrms, 60Hz
750
2500
5
146
400
108
1012||2.5
0.3
OFFSET VOLTAGE (RTI)
Input Stage (VOSI)
Initial Offset
vs Temperature
vs Input Power Supplies
vs Time
Output Stage (VOSO)
Initial Offset
vs Temperature
vs Output Power Supplies
vs Time
Common-Mode Rejection Ratio(2)
Common-Mode Range
60Hz, RF = 1M
RIN = 10k, Gain = 100
±10
1
1
3
90
500
5
105
500
5
105
REFERENCE CURRENT SOURCES
Magnitude
Nominal
vs Temperature
vs Power Supplies
Matching
Nominal
vs Temperature
vs Power Supplies
Compliance Voltage
Output Resistance
10.5
12
0.3
12.5
300
3
50
150
0.3
–10
2 x 109
+15
FREQUENCY RESPONSE
Small Signal Bandwidth
Full Power Bandwidth
Slew Rate
Settling Time
Gain = 1V/µA
Gain = 1V/µA, VO = ±10V
0.1%
0.22
60
5
0.31
100
TEMPERATURE RANGE
Specification
Operating
Storage
–25 +85
–40 +100
–40 +100
UNIPOLAR OPERATION
GENERAL PARAMETERS
Input Current Range
Linear Operation
Without Damage
Input Impedance
Output Voltage Swing
Output Impedance
RL = 2k, RF = 1M
DC, Open-Loop
–20
–1
0.1
–10
1200
–0.02
+1
0
GAIN
Initial Error (adjustable to zero)
vs Temperature
vs Time
Nonlinearity(3)
VO = RF (IIN)
25
0.03 0.07
0.05
0.1 0.4
CURRENT NOISE
0.01Hz to 10Hz
10Hz
100Hz
1kHz
IIN = 0.2µA
20
1
0.7
0.65
ISO100BP
MIN TYP MAX
T
T
T
T
T
T
T
T
300
2
T
T
300
2
T
T
T
T
T
TTT
T
TT
T
T
T
TT
T
T
T
TT
T
TT
TT
TT
TT
TT
T
TT
T
12
0.01 0.05
T
0.03
0.1
T
T
T
T
ISO100CP
MIN TYP MAX
UNITS
TV
TV
T pA/V
T dB
T pA/V
T dB
T ||pF
T µA, rms
200 µV
2 µV/°C
T dB
T µV/kHr
200 µV
2 µV/°C
T dB
T µV/kHr
T nA/V
T dB
TV
T T T µA
150 ppm/°C
T T nA/V
T nA
T ppm/°C
T nA/V
T TV
T
T
T
TT
T
kHz
kHz
V/µs
µs
T T °C
T T °C
T T °C
T T µA
T T mA
T
T TV
T
1
0.005
T
0.02
2
0.03
0.07
% of FS
%/°C
%/kHr
%
T pAp-p
T pA/Hz
T pA/Hz
T pA/Hz
ISO100
2





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