Datasheet LTC1151 (Analog Devices)

LTC1151 Dual ±15V Zero-Drift Operational Amplifier
U FEATURES DESCRIPTIO
■ Maximum Offset Voltage Drift: 0.05µV/°C The LTC®1151 is a high voltage, high performance dual ■ High Voltage Operation: ±18V zero-drift operational amplifier. The two sample-and-hold ■ No External Components Required capacitors per amplifier required externally by other chop- ■ Maximum Offset Voltage: 5µV per amplifiers are integrated on-chip. The LTC1151 also ■ Low Noise: 1.5µV incorporates proprietary high voltage CMOS structures P-P (0.1Hz to 10Hz) ■ Minimum Voltage Gain: 125dB which allow operation at up to 36V total supply voltage. ■ Minimum CMRR: 106dB The LTC1151 has a typical offset voltage of 0.5µV, ■ Minimum PSRR: 110dB drift of 0.01µV/°C, 0.1Hz to 10Hz input noise voltage of ■ Low Supply Current: 0.9mA/Amplifier 1.5µVP-P, and a typical voltage gain of 140dB. It has a slew ■ Single Supply Operation: 4.75V to 36V rate of 3V/µs and a gain-bandwidth product of 2.5MHz ■ Input Common Mode Range Includes Ground with a supply current of 0.9mA per amplifier. Overload ■ Typical Overload Recovery Time: 20ms recovery times from positive and negative saturation are ■ Available in 8-Lead N8 and 16-Lead SW Packages 3ms and 20ms, respectively.
U APPLICATIO S
The LTC1151 is available in a standard 8-lead plastic DIP package as well as a 16-lead wide body SO. The LTC1151 ■ Strain Gauge Amplifiers is pin compatible with industry-standard dual op amps ■ Instrumentation Amplifiers and runs from standard ±15V supplies, allowing it to plug ■ Electronic Scales in to most standard bipolar op amp sockets while offering ■ Medical Instrumentation significant improvement in DC performance. ■ Thermocouple Amplifiers , LTC and LT are registered trademarks of Linear Technology Corporation. ■ High Resolution Data Acquisition All other trademarks are the property of their respective owners.
U TYPICAL APPLICATIO
±
15V Dual Thermocouple Amplifier Noise Spectrum
51Ω 100Ω* 240k 15V 60 50 0.1µF 0.1µF √Hz) 6 40 15V – 8 1/2 7 OUTPUT A LTC1151 30 100mV/°C 2k 7 – + 5 VIN K + LT1025 20 3 VO 51Ω 100Ω* 240k NOISE VOLTAGE (nV/ R– GND 10 470k TYPE K 4 5 0 –15V 2 – 0.1µF 1 10 100 1k 10k 1/2 1 OUTPUT B FREQUENCY (Hz) LTC1151 100mV/°C 2k – + 1151 TA02 3 + 4 0.1µF TYPE K –15V * FULL SCALE TRIM: TRIM FOR 10.0V OUTPUT 1151 TA01 WITH THERMOCOUPLE AT 100°C 1151fa 1