1

LTC1151

Dual

±15V Zero-Drift

Operational Amplifier

–15V

–15V

–

+

15V

0.1

µF

6

5

8

1/2

LTC1151

7

OUTPUT A

100mV/°C

1151 TA01

240k

51

Ω 100Ω*

0.1

µF

2k

LT1025

15V

470k

GND

7

3

+

–

–

+

TYPE K

0.1

µF

2

3

4

1/2

LTC1151

1

OUTPUT B

100mV/°C

240k

51

Ω 100Ω*

0.1

µF

2k

+

–

5

4

TYPE K

* FULL SCALE TRIM: TRIM FOR 10.0V OUTPUT

WITH THERMOCOUPLE AT 100°C

APPLICATI

TYPICAL

DESCRIPTIO

S

FEATURE

The LTC1151 is a high voltage, high performance dual

zero-drift operational amplifier. The two sample-and-hold

capacitors per amplifier required externally by other chop-

per amplifiers are integrated on-chip. The LTC1151 also

incorporates proprietary high voltage CMOS structures

which allow operation at up to 36V total supply voltage.

The LTC1151 has a typical offset voltage of 0.5

µV,

drift of 0.01

µV/°C, 0.1Hz to 10Hz input noise voltage of

1.5

rate of 3V/

µs and a gain-bandwidth product of 2.5MHz

with a supply current of 0.9mA per amplifier. Overload

recovery times from positive and negative saturation are

3ms and 20ms, respectively.

The LTC1151 is available in a standard 8-lead plastic DIP

package as well as a 16-lead wide body SO. The LTC1151

is pin compatible with industry-standard dual op amps

and runs from standard

±15V supplies, allowing it to plug

in to most standard bipolar op amp sockets while offering

significant improvement in DC performance.

S

APPLICATI

s

Strain Gauge Amplifiers

s

Instrumentation Amplifiers

s

Electronic Scales

s

Medical Instrumentation

s

Thermocouple Amplifiers

s

High Resolution Data Acquisition

s

Maximum Offset Voltage Drift: 0.05

µV/°C

s

High Voltage Operation:

±18V

s

No External Components Required

s

Maximum Offset Voltage: 5

µV

s

Low Noise: 1.5

s

Minimum Voltage Gain: 125dB

s

Minimum CMRR: 106dB

s

Minimum PSRR: 110dB

s

Low Supply Current: 0.9mA/Amplifier

s

Single Supply Operation: 4.75V to 36V

s

Input Common-Mode Range Includes Ground

s

Typical Overload Recovery Time: 20ms

Noise Spectrum

±15V Dual Thermocouple Amplifier

FREQUENCY (Hz)

10

20

30

40

60

1

100

1k

10k

1151 TA02

0

10

50