LT1168I Linear Technology Corporation, LT1168I Datasheet

LT1168I

Manufacturer Part Number

LT1168I

Description

Manufacturer

Linear Technology Corporation

Datasheets

1.LT1168I.pdf (16 pages)

2.LT1168I.pdf (20 pages)

Specifications of LT1168I

Case

SOP8

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FEATURES

APPLICATIO S

*See Theory of Operation section

TYPICAL APPLICATIO

Supply Current: 530 A Max

Meets IEC 1000-4-2 Level 4 ESD Tests with

Two External 5k Resistors

Single Gain Set Resistor: G = 1 to 10,000

Gain Error: G = 10, 0.4% Max

Input Offset Voltage Drift: 0.3 V/ C Max

Gain Nonlinearity: G = 10, 20ppm Max

Input Offset Voltage: 40 V Max

Input Bias Current: 250pA Max

PSRR at A

CMRR at A

Wide Supply Range: 2.3V to 18V

1kHz Voltage Noise: 10nV/ Hz

0.1Hz to 10Hz Noise: 0.28 V

Available in 8-Pin PDIP and SO Packages

Bridge Amplifiers

Strain Gauge Amplifiers

Thermocouple Amplifiers

Differential to Single-Ended Converters

Differential Voltage to Current Converters

Data Acquisition

Battery-Powered and Portable Equipment

Medical Instrumentation

Scales

3.5k

=1: 103dB Min

= 1: 90dB Min

G = 200

249

Single Supply* Pressure Monitor

–

LT1168

Resistor Gain Programmable, Micropower

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

P-P

67-8-3 R40KQ, (0.02% RATIO MATCH)

BI TECHNOLOGIES

40k

20k

40k

Precision Instrumentation Amplifier

–

LT1112

1/2

DESCRIPTIO

The LT

amplifier that requires only one external resistor to set gains

of 1 to 10,000. The low voltage noise of 10nV/ Hz (at 1kHz)

is not compromised by low power dissipation (350 A typical

for 15V supplies). The wide supply range of 2.3V to 18V

allows the LT1168 to fit into a wide variety of industrial as well

as battery-powered applications.

The high accuracy of the LT1168 is due to a 20ppm maximum

nonlinearity and 0.4% max gain error (G = 10). Previous

monolithic instrumentation amps cannot handle a 2k load

resistor whereas the nonlinearity of the LT1168 is specified

for loads as low as 2k. The LT1168 is laser trimmed for very

low input offset voltage (40 V max), drift (0.3 V/ C), high

CMRR (90dB, G = 1) and PSRR (103dB, G = 1). Low input

bias currents of 250pA max are achieved with the use of

superbeta processing. The output can handle capacitive

loads up to 1000pF in any gain configuration while the inputs

are ESD protected up to 13kV (human body). The LT1168

with two external 5k resistors passes the IEC 1000-4-2 level

4 specification.

The LT1168 is a pin-for-pin improved second source for the

AD620 and INA118. The LT1168, offered in 8-pin PDIP and

SO packages, requires significantly less PC board area than

discrete op amp resistor designs. These advantages make

the LT1168 the most cost effective solution for precision

instrumentation amplifier applications.

REF

AGND

LTC

, LTC and LT are registered trademarks of Linear Technology Corporation.

ADC

1286

DIGITAL

OUTPUT

1168 is a micropower, precision instrumentation

DATA

1168 TA01

Low Power, Single

Final Electrical Specifications

G = 1000

OUT

= 2K

= 10V

Gain Nonlinearity

OUTPUT VOLTAGE (2V/DIV)

March 2000

LT1168

1168 TA01a

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