Dual ±15V Zero-Drift Operational Amplifier

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 chopper 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 0.5µV, drift of 0.01µV/°C, 0.1Hz to 10Hz input noise voltage of 1.5mVP-P, and a typical voltage gain of 140dB. It has a slew 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.

Applications

* Strain Gauge Amplifiers

* Instrumentation Amplifiers

* Electronic Scales

* Medical Instrumentation

* Thermocouple Amplifiers

* High Resolution Data Acquisition

* Maximum Offset Voltage Drift: 0.05µV/°C

* High Voltage Operation: ±18V

* No External Components Required

* Maximum Offset Voltage: 5µV

* Low Noise: 1.5µVP-P (0.1Hz to 10Hz)

* Minimum Voltage Gain: 125dB

* Minimum CMRR: 106dB

* Minimum PSRR: 110dB

* Low Supply Current: 0.9mA/Amplifier

* Single Supply Operation: 4.75V to 36V

* Input Common-Mode Range Includes Ground

* Typical Overload Recovery Time: 20ms