1

LTC1051/LTC1053

10513fa

FREQUENCY (Hz)

10

120

100

80

60

40

20

100

1k

10k

1051/53 TA01b

The LTC

dual/quad zero-drift operational amplifiers. The unique

achievement of the LTC1051/LTC1053 is that they integrate

on chip the sample-and-hold capacitors usually required

externally by other chopper amplifiers. Further, the

LTC1051/LTC1053 offer better combined overall DC and

AC performance than is available from other chopper

stabilized amplifiers with or without internal sample/hold

capacitors.

The LTC1051/LTC1053 have an offset voltage of 0.5µV,

drift of 0.01µV/°C, DC to 10Hz, input noise voltage typically

of 4V/µs and gain bandwidth product of 2.5MHz are

achieved with only 1mA of supply current per op amp.

Overload recover times from positive and negative

saturation conditions are 1.5ms and 3ms respectively,

about a 100 or more times improvement over chopper

amplifiers using external capacitors.

The LTC1051 is available in an 8-lead standard plastic

dual-in-line package as well as a 16-pin SW package. The

LTC1053 is available in a standard 14-pin plastic package

and an 18-pin SO. The LTC1051/LTC1053 are plug in

replacements for most standard dual/quad op amps with

improved performance.

■

Thermocouple Amplifiers

■

Electronic Scales

■

Medical Instrumentation

■

Strain Gauge Amplifiers

■

High Resolution Data Acquisition

■

DC Accurate R C Active Filters

■

Dual/Quad Low Cost Precision Op Amp

■

No External Components Required

■

Maximum Offset Voltage: 5µV

■

Maximum Offset Voltage Drift: 0.05µV/°C

■

■

Minimum Voltage Gain: 120dB

■

Minimum PSRR: 120dB

■

Minimum CMRR: 114dB

■

Low Supply Current: 1mA/Op Amp

■

Single Supply Operation: 4.75V to 16V

■

Input Common Mode Range Includes Ground

■

Output Swings to Ground

■

Typical Overload Recovery Time: 3ms

■

Pin Compatible with Industry Standard Dual and

Quad Op Amps

Dual/Quad Precision

Zero-Drift Operational Amplifiers

With Internal Capacitors

High Performance Low Cost Instrumentation Amplifier

LTC1051 Noise Spectrum

–

+

–

+

5V

1/2

LTC1051

1/2

LTC1051

–5V

R1

R2

R1

R2

1

2

3

4

5

6

7

8

1051/53 TA01a

R1 = 499Ω, 0.1%

R2 = 100k, 0.1%

GAIN = 201

MEASURED CMRR ~ 120dB AT DC

FEATURES

DESCRIPTIO

TYPICAL APPLICATIO

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

APPLICATIO S