Burr Brown ISO175P Datasheet

®

ISO175

Precision, Isolated

INSTRUMENT ATION AMPLIFIER

ISO175

FEATURES

● RATED

1500Vrms Continuous
2500Vrms for One Minute
100% TESTED FOR PARTIAL DISCHARGE

● HIGH IMR: 115dB at 50Hz

● LOW NONLINEARITY:

±0.01%

● LOW INPUT BIAS CURRENT: 10nA max

● LOW INPUT OFFSET VOLTAGE: 101mV max

● INPUTS PROTECTED TO

● BIPOLAR OPERATION: V

±40V

= ±10V

O

● SYNCHRONIZATION CAPABILITY

● 24-PIN PLASTIC DIP: 0.3" Wide

APPLICATIONS

● INDUSTRIAL PROCESS CONTROL

Transducer Isolator, Thermocouple
Isolator, RTD Isolator, Pressure Bridge
Isolator, Flow Meter Isolator

● POWER MONITORING

● MEDICAL INSTRUMENTATION

● ANALYTICAL MEASUREMENTS

● BIOMEDICAL MEASUREMENTS

● DATA ACQUISITION

● TEST EQUIPMENT

● POWER MONITORING

● GROUND LOOP ELIMINATION

V

1

IN–

R

22

G

2

R

G

24

V

IN+

DESCRIPTION

ISO175 is a precision isolated instrumentation ampli­fier incorporating a novel duty cycle modulation­demodulation technique and excellent accuracy. A
single external resistor sets the gain. Internal input
protection can withstand up to ±40V without damage.
The signal is transmitted digitally across a differential
capacitive barrier. With digital modulation the barrier
characteristics do not affect signal integrity. This re­sults in excellent reliability and good high frequency
transient immunity across the barrier. Both the ampli­fier and barrier capacitors are housed in a plastic DIP.

ISO175 is easy to use. A power supply range of ±4.5V
to ±18V makes this amplifier ideal for a wide range of
applications.

5214 15

Shield 1 Ext Osc +V

S1

+V

S2

Shield 2

V

OUT

Com2

14

11

10

Com1

23 20 3 13 12

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone] • Twx: 910-952-1111

Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

©

1996 Burr-Brown Corporation PDS-1293A Printed in U.S.A. May, 1996

GND1 –V

S1

–V

GND2

S2

SPECIFICATIONS

At TA = +25°C, VS1 = VS2 = ±15V, and RL = 2kΩ unless otherwise noted.

ISO175P
PARAMETER CONDITIONS MIN TYP MAX UNITS
ISOLATION

Voltage Rated Continuous:

AC T

DC T
100% Test (AC, 50Hz) 1s; Partial Discharge ≤ 5pC 2500 Vrms
Isolation-Mode Rejection

AC 50Hz 1500Vrms 115 dB

DC 160 dB
Barrier Impedance 10
Leakage Current VISO = 240Vrms, 50Hz 0.8 1 µArms

GAIN

Gain Error G = 1 ±0.35 %

Gain vs Temperature G = 1 ±11 ppm/°C
Nonlinearity G = 1 ±0.102 %

INPUT OFFSET VOLTAGE

Initial Offset G = 1, 100 mV

vs Temperature µV/°C

vs Supply G = 1 ±2 mV/V

INPUT

Voltage Range ±10 V
Bias Current ±10 nA

vs Temperature ±40 pA/°C
Offset Current ±10 nA

vs Temperature ±40 pA/°C

OUTPUT

Voltage Range ±10 V
Current Drive ±5mA
Capacitive Load Drive 0.1 µF
Ripple Voltage 10 mVp-p

FREQUENCY RESPONSE

Small Signal Bandwidth G = 1 60 kHz

Slew Rate V

POWER SUPPLIES

Rated Voltage 15 V
Voltage Range ±4.5 ±18 V
Quiescent Current

V

V

TEMPERATURE RANGE

Operating –40 85 °C
Storage –40 125 °C

NOTE: (1) All devices receive a 1s test. Failure criterion is ≥ 5 pulses of ≥ 5pc.

(1)

MIN
MIN

to T
to T

MAX
MAX

1500 Vrms
2121 VDC

14

|| 6 Ω || pF





50k

1+





R





G

V/V

G = 10 ±0.07 %

G = 100 ±0.95 %

G = 10 ±0.04 %

G = 100 ±0.104 %

101



± 1+





520

G








± 0.125 +










G

G = 10 60 kHz

G = 100 50 kHz

= ±10V, G = 10 0.9 V/µs

O

S1
S2

±7.4 mA
±7.5 mA

®

ISO175

2

V

S1–

V

S1+

Shield 1

Com 2

V

OUT

GND 2

R

G

EXT OSC
GND 1

V

S2+

Shield 2
V

S2–

R

G

Com 1

V

IN–

1
2
3
4
5

10
11
12

24
23
22
21
20

15
14
13

V

IN+

ABSOLUTE MAXIMUM RATINGS

Supply Voltage................................................................................... ±18V

Analog Input Voltage Range .............................................................. ±40V

External Oscillator Input..................................................................... ±25V

Com 1 to GND1 ................................................................................... ±1V

Com 2 to GND2 ................................................................................... ±1V

Continuous Isolation Voltage: ....................................................1500Vrms

IMV, dv/dt...................................................................................... 20kV/µs

Junction Temperature ...................................................................... 150°C

Storage Temperature...................................................... –40°C to +125°C

Lead Temperature (soldering, 10s)................................................ +300°C

Output Short Duration .......................................... Continuous to Common

ELECTROSTATIC
DISCHARGE SENSITIVITY

Any integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.

ESD damage can range from subtle performance degrada­tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet
published specifications.

PIN CONFIGURATION

PACKAGE/ORDERING INFORMATION

PACKAGE
DRAWING

PRODUCT PACKAGE NUMBER

ISO175P 24-Pin Plastic DIP 243-2 60kHz

NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.

(1)

BANDWIDTH

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

ISO175

®