1

LTC1050

1050fb

–

+

7

8

13

14

16

17

11

4

1/2 LTC1043

5V

1µF

1µF

DIFFERENTIAL

INPUT

12

0.01µF

R1

CMRR > 120dB AT DC

CMRR > 120dB AT 60Hz

DUAL SUPPLY OR SINGLE 5V

GAIN = 1 + R2/R1

COMMON MODE INPUT VOLTAGE EQUALS THE SUPPLIES

R2

1050 TA01

–5V

1µF

–5V

5V

4

7

3

2

6

LTC1050

Precision Zero-Drift

Operational Amplifier

with Internal Capacitors

■

No External Components Required

■

Noise Tested and Guaranteed

■

Low Aliasing Errors

■

Maximum Offset Voltage: 5µV

■

Maximum Offset Voltage Drift: 0.05µV/°C

■

■

Minimum Voltage Gain: 130dB

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Minimum PSRR: 125dB

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Minimum CMRR: 120dB

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Low Supply Current: 1mA

■

Single Supply Operation: 4.75V to 16V

■

Input Common Mode Range Includes Ground

■

Output Swings to Ground

■

Typical Overload Recovery Time: 3ms

The LTC

operational amplifier. The unique achievement of the

LTC1050 is that it integrates on-chip the two sample-and-

hold capacitors usually required externally by other chop-

per amplifiers. Further, the LTC1050 offers better com-

bined overall DC and AC performance than is available

from other chopper stabilized amplifiers with or without

internal sample-and-hold capacitors.

The LTC1050 has an offset voltage of 0.5µV, drift of

and a typical voltage gain of 160dB. The slew rate of 4V/µs

and a gain bandwidth product of 2.5MHz are achieved with

only 1mA of supply current.

Overload recovery times from positive and negative satu-

ration conditions are 1.5ms and 3ms respectively, which

represents an improvement of about 100 times over chop-

per amplifiers using external capacitors. Pin 5 is an optional

external clock input, useful for synchronization purposes.

The LTC1050 is available in standard 8-pin metal can,

plastic and ceramic dual-in-line packages as well as an

SO-8 package. The LTC1050 can be an improved plug-in

replacement for most standard op amps.

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Thermocouple Amplifiers

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Electronic Scales

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Medical Instrumentation

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Strain Gauge Amplifiers

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High Resolution Data Acquisition

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DC Accurate RC Active Filters

High Performance, Low Cost Instrumentation Amplifier

Noise Spectrum

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

FREQUENCY (Hz)

40

80

100

140

160

10

1k

10k

100k

1050 TA02

0

100

120

60

20

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