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ISOLATION AMPLIFIER. ISO121 Datasheet







ISO121 AMPLIFIER. Datasheet pdf. Equivalent




Part

ISO121

Description

Precision Low Cost ISOLATION AMPLIFIER



Feature


ISO120 ISO121 Precision Low Cost ISOLAT ION AMPLIFIER FEATURES q q q q q q q q q q 100% TESTED FOR PARTIAL DISCHARGE I SO120: Rated 1500Vrms ISO121: Rated 350 0Vrms HIGH IMR: 115dB at 60Hz USER CONT ROL OF CARRIER FREQUENCY LOW NONLINEARI TY: ±0.01% max BIPOLAR OPERATION: VO = ±10V 0.3"-WIDE 24-PIN HERMETIC DIP, I SO120 SYNCHRONIZATION CAPABILITY WIDE T EMP RANGE: –55°C to .
Manufacture

Burr-Brown Corporation

Datasheet
Download ISO121 Datasheet


Burr-Brown Corporation ISO121

ISO121; +125°C (ISO120) APPLICATIONS q INDUSTR IAL PROCESS CONTROL: Transducer Isolato r for Thermocouples, RTDs, Pressure Bri dges, and Flow Meters, 4mA to 20mA Loop Isolation q GROUND LOOP ELIMINATION q MOTOR AND SCR CONTROL q POWER MONITORIN G q ANALYTICAL MEASUREMENTS q BIOMEDICA L MEASUREMENTS q DATA ACQUISITION q TES T EQUIPMENT DESCRIPTION The ISO120 and ISO121 are precisi.


Burr-Brown Corporation ISO121

on isolation amplifiers incorporating a novel duty cycle modulationdemodulation technique. The signal is transmitted d igitally across a 2pF differential capa citive barrier. With digital modulation the barrier characteristics do not aff ect signal integrity, which results in excellent reliability and good high fre quency transient immunity across the ba rrier. Both the am.


Burr-Brown Corporation ISO121

plifier and barrier capacitors are house d in a hermetic DIP. The ISO120 and ISO 121 differ only in package size and iso lation voltage rating. These amplifiers are easy to use. No external component s are required for 60kHz bandwidth. Wit h the addition of two external capacito rs, precision specifications of 0.01% m ax nonlinearity and 150µV/°C max VOS drift are guaranteed.




 ISO121
ISO120
ISO121
Precision Low Cost
ISOLATION AMPLIFIER
FEATURES
q 100% TESTED FOR PARTIAL DISCHARGE
q ISO120: Rated 1500Vrms
q ISO121: Rated 3500Vrms
q HIGH IMR: 115dB at 60Hz
q USER CONTROL OF CARRIER
FREQUENCY
q LOW NONLINEARITY: ±0.01% max
q BIPOLAR OPERATION: VO = ±10V
q 0.3"-WIDE 24-PIN HERMETIC DIP, ISO120
q SYNCHRONIZATION CAPABILITY
q WIDE TEMP RANGE: –55°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 150µV/°C max
VOS drift are guaranteed with 6kHz bandwidth. A
power supply range of ±4.5V to ±18V and low quies-
cent current make these amplifiers ideal for a wide
range of applications.
C1H
C1L
VIN
Signal
Com 1
Ext Osc
+VS1
Gnd 1
–VS1
Isolation Barrier
C2H
C2L
Sense
VOUT
Signal
Com 2
–VS2
Gnd 2
+VS2
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 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1988 Burr-Brown Corporation
PDS-820D
Printed in U.S.A. March, 1992




 ISO121
SPECIFICATIONS
ELECTRICAL
At TA = +25°C: VS1 = VS2 = ±15V: and RL = 2k, unless otherwise noted.
ISO120BG, ISO121BG
ISO120G, ISO120SG(4), ISO121G
PARAMETER
CONDITIONS
MIN TYP
MAX
MIN
TYP
MAX
UNITS
ISOLATION
Voltage Rated Continuous ISO120: AC 60Hz
TMIN to TMAX
DC TMIN to TMAX
ISO121: AC 60Hz
TMIN to TMAX
DC TMIN to TMAX
100% Test (AC 60Hz): ISO120
1s; Partial Discharge 5pC
ISO121
1s; Partial Discharge 5pC
Isolation Mode Rejection ISO 120: AC 60Hz
1500Vrms
1500
2121
3500
4950
2500
5600
115
*
*
*
*
*
*
*
Vrms
VDC
Vrms
VDC
Vrms
Vrms
dB
DC 160 * dB
ISO121: AC60Hz
3500Vrms
115
* dB
Barrier Impedance
Leakage Current
DC
VISO = 240Vrms, 60Hz
160
1014 || 2
0.18
0.5
* dB
* || pF
* * µArms
GAIN(4)
Nominal Gain
Gain Error
Gain vs Temperature
Nonlinearity
Nominal Gain
Gain Error
Gain vs Temperature
Nonlinearity
VO = ±10V
C1 = C2 = 1000pF
C1 = C2 = 0
1
±0.04
±5
±0.005
1
±0.04
±40
±0.02
±0.1
±20
±0.01
±0.25
±0.1
1
±0.05
±10
±0.01
1
±0.05
±40
±0.04
±0.25
±40
±0.05
±0.25
±0.1
V/V
%FSR
ppm/°C
%FSR
V/V
%FSR
ppm/°C
%FSR
INPUT OFFSET VOLTAGE(4)
Initial Offset
vs Temperature
Initial Offset
vs Temperature
Initial Offset
vs Supply
Noise
C1 = C2 = 1000pF
C1 = C2 = 0
±VS1 or ±VS2 = ±4.5V to ±18V
±5
±100
±25
±250
±2
4
±25
±150
±100
±10
±150
±40
±500
±2
4
±50
±400
±100
mV
µV/°C
mV
µV/°C
mV/V
µV/Hz
INPUT
Voltage Range(1)
Resistance
±10 ±15
200
**
*
V
k
OUTPUT
Voltage Range
Current Drive
Capacitive Load Drive
Ripple Voltage(2)
±10 ±12.5
±5 ±15
0.1
10
**
**
*
*
V
mA
µF
mVp-p
FREQUENCY RESPONSE
Small Signal Bandwith
Slew Rate
Settling Time
0.1%
0.01%
Overload Recovery Time(3)
POWER SUPPLIES
Rated Voltage
Voltage Range
Quiescent Current: VS1
VS2
C1 = C2 = 0
C1 = C2 = 1000pF
V
O
=
±10V
C2 = 100pF
C = C = 1000pF
12
50% Output Overload,
C =C =0
12
60
6
2
50
350
150
15
±4.5
±4.0
±5.0
±18
±5.5
±6.5
*
*
*
*
*
*
*
*
*
**
**
kHz
kHz
V/µs
µs
µs
µs
V
V
mA
mA
TEMPERATURE RANGE
Specification: BG and G
SG(4)
Operating
Storage
θJA: ISO120
ISO121
–25
–25
–55
–65
40
25
85 –25
85
85 –55
125
125 –55
125
150 –55
150
40
25
°C
°C
°C
°C
°C/W
°C/W
*Specifications same as ISO120BG, ISO121BG.
NOTE:
(1)
Input
voltage
range
=
±10V
for
V,
S1
V
S2
=
±4.5VDC
to
±18VDC.
(2)
Ripple
frequency
is
at
carrier
frequency.
(3)
Overload
recovery
is
approximately
three
times
the settling time for other values of C2. (4) The SG-grade is specified –55°C to +125°C; performance of the SG in the –25°C to +85°C temperature range is the same
as the BG-grade.
ISO120/121
2




 ISO121
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (any supply) ............................................................... 18V
VIN, Sense Voltage .......................................................................... ±100V
External Oscillator Input .................................................................... ±25V
Signal Common 1 to Ground 1 ........................................................... ±1V
Signal Common 2 to Ground 2 ........................................................... ±1V
Continuous Isolation Voltage: ISO120 ...................................... 1500Vrms
ISO121 ....................................... 3500Vrms
VISO, dv/dt ...................................................................................... 20kV/µs
Junction Temperature ...................................................................... 150°C
Storage Temperature ..................................................... –65°C to +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
Output Short Duration ......................................... Continuous to Common
CONNECTION DIAGRAM
C1H 1/1(1)
C1L 2/2
+VS1 3/3
–VS1 4/4
24/40 Gnd 1
23/39 VIN
22/38 Ext Osc
21/37 Com 1
PACKAGE INFORMATION(1)
MODEL
PACKAGE
PACKAGE DRAWING
NUMBER
ISO120G
ISO120BG
ISO120SG
24-Pin DIP
24-Pin DIP
24-Pin DIP
225
225
225
ISO121G
ISO121BG
40-Pin DIP
40-Pin DIP
206
206
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix D of Burr-Brown IC Data Book.
ORDERING INFORMATION
MODEL
ISO120G
ISO120BG
ISO120SG
ISO121G
ISO121BG
TEMPERATURE
RANGE
–25°C to 85°C
–25°C to 85°C
–55C to 125°C
–25°C to 85°C
–25°C to 85°C
Com 2 9/17
VOUT 10/18
Sense 11/19
Gnd 2 12/20
16/24 –VS2
15/23 +VS2
14/22 C2L
13/21 C2H
NOTE: (1) First pin number is for ISO120.
Second pin number is for ISO121.
ELECTROSTATIC
DISCHARGE SENSITIVITY
Electrostatic discharge can cause damage ranging from per-
formance degradation to complete device failure. Burr-Brown
Corporation recommends that all integrated circuits be handled
and stored using appropriate ESD protection methods.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
3 ISO120/121



Recommended third-party ISO121 Datasheet






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