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

TYPICAL APPLICATIO

APPLICATIO S

*See Theory of Operation section

3.5k

Supply Current: 530 A Max

Meets IEC 1000-4-2 Level 4 ( 15kV) 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

G = 200

249

=1: 103dB Min

= 1: 90dB Min

–

Single Supply* Pressure Monitor

LT1168

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

P-P

BI TECHNOLOGIES

40k

20k

40k

Precision Instrumentation Amplifier

–

LT1112

1/2

Resistor Gain Programmable,

REF

AGND

LTC

ADC

DESCRIPTIO

The LT

plifier 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

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 mono-

lithic 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 process-

ing. 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.

1286

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

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

OUTPUT

DIGITAL

DATA

1168 TA01

1168 is a micropower, precision instrumentation am-

Low Power, Single

G = 1000

OUT

= 2k

= 10V

Gain Nonlinearity

OUTPUT VOLTAGE (2V/DIV)

LT1168

1168 TA01a

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