LTC1150 ±15V Zero-Drift Operational Amplifier with Internal Capacitors UFEATURESDESCRIPTIO ■ High Voltage Operation: ±16V The LTC®1150 is a high-voltage, high-performance ■ No External Components Required zero-drift operational amplifier. The two sample-and-hold ■ Maximum Offset Voltage: 10µV capacitors usually required externally by other chopper ■ Maximum Offset Voltage Drift: 0.05µV/°C amplifiers are integrated on-chip. Further, LTC’s propri- ■ Low Noise 1.8µVP-P (0.1Hz to 10Hz) etary high-voltage CMOS structures allow the LTC1150 to ■ Minimum Voltage Gain: 135dB operate at up to 32V total supply voltage. ■ Minimum PSRR: 120dB The LTC1150 has an offset voltage of 0.5µV, drift of ■ Minimum CMRR: 110dB 0.01µV/°C, 0.1Hz to 10Hz input noise voltage of 1.8µVP-P ■ Low Supply Current: 0.8mA and a typical voltage gain of 180dB. The slew rate of 3V/µs ■ Single Supply Operation: 4.75V to 32V and a gain bandwidth product of 2.5MHz are achieved with ■ Input Common Mode Range Includes Ground 0.8mA of supply current. Overload recovery times from ■ 200µA Supply Current with Pin 1 Grounded positive and negative saturation conditions are 3ms and ■ Typical Overload Recovery Time 20ms 20ms, respectively. U For applications demanding low power consumption, APPLICATIO S Pin 1 can be used to program the supply current. Pin 5 is ■ an optional AC-coupled clock input, useful for Strain Gauge Amplifiers synchronization. ■ Electronic Scales ■ Medical Instrumentation The LTC1150 is available in standard 8-lead, plastic dual- ■ Thermocouple Amplifiers in-line package, as well as an 8-lead SO package. The ■ High Resolution Data Acquisition LTC1150 can be a plug-in replacement for most standard bipolar op amps with significant improvement in DC performance. , LTC and LT are registered trademarks of Linear Technology Corporation. UTYPICAL APPLICATIOSingle Supply Instrumentation AmplifierNoise Spectrum 160 1k 140 1M Hz) √ 120 V+ V+ 100 1M 2 7 – 80 1k 6 2 7 LTC1150 – 3 60 6 –V + LTC1150 V IN OUT 4 3 40 V + GAIN = 1000V/V IN 4 OUTPUT OFFSET ≤ 5mV VOLTAGE NOISE DENSITY (nV 20 TOTAL SUPPLY CURRENT DECREASES TO 400µA 0 WHEN BOTH PIN 1s ARE 10 100 1k 10k 100k GROUNDED LTC1150 •TA01 FREQUENCY (Hz) LTC1150 •TA02 1150fb 1
