LTC1051/LTC1053 Dual/Quad Precision Zero-Drift Operational Amplifiers With Internal Capacitors UFEATURESDESCRIPTIO ■ Dual/Quad Low Cost Precision Op Amp The LTC®1051/LTC1053 are high performance, low cost ■ No External Components Required dual/quad zero-drift operational amplifiers. The unique ■ Maximum Offset Voltage: 5µV achievement of the LTC1051/LTC1053 is that they integrate ■ Maximum Offset Voltage Drift: 0.05µV/°C on chip the sample-and-hold capacitors usually required ■ Low Noise 1.5µV externally by other chopper amplifiers. Further, the P-P (0.1Hz to 10Hz) ■ Minimum Voltage Gain: 120dB LTC1051/LTC1053 offer better combined overall DC and ■ Minimum PSRR: 120dB AC performance than is available from other chopper ■ Minimum CMRR: 114dB stabilized amplifiers with or without internal sample/hold ■ Low Supply Current: 1mA/Op Amp capacitors. ■ Single Supply Operation: 4.75V to 16V The LTC1051/LTC1053 have an offset voltage of 0.5µV, ■ Input Common Mode Range Includes Ground drift of 0.01µV/°C, DC to 10Hz, input noise voltage typically ■ Output Swings to Ground 1.5µVP-P and typical voltage gain of 140dB. The slew rate ■ Typical Overload Recovery Time: 3ms of 4V/µs and gain bandwidth product of 2.5MHz are ■ Pin Compatible with Industry Standard Dual and achieved with only 1mA of supply current per op amp. Quad Op Amps U Overload recover times from positive and negative APPLICATIO S saturation conditions are 1.5ms and 3ms respectively, about a 100 or more times improvement over chopper ■ Thermocouple Amplifiers amplifiers using external capacitors. ■ Electronic Scales ■ Medical Instrumentation The LTC1051 is available in an 8-lead standard plastic ■ Strain Gauge Amplifiers dual-in-line package as well as a 16-pin SW package. The ■ High Resolution Data Acquisition LTC1053 is available in a standard 14-pin plastic package ■ DC Accurate R C Active Filters and an 18-pin SO. The LTC1051/LTC1053 are plug in replacements for most standard dual/quad op amps with , LTC and LT are registered trademarks of Linear Technology Corporation. improved performance. UTYPICAL APPLICATIOHigh Performance Low Cost Instrumentation AmplifierLTC1051 Noise Spectrum 120 R1 R2 Hz) √ 100 5V R2 2 – 8 80 1/2 R1 1 6 LTC1051 – 3 1/2 7 VIN + 60 LTC1051 5 VIN + 4 R1 = 499Ω, 0.1% R2 = 100k, 0.1% 40 – 5V VOLTAGE NOISE DENSITY (nV GAIN = 201 MEASURED CMRR ~ 120dB AT DC MEASURED INPUT VOS 3µV 20 1051/53 TA01a MEASURED INPUT NOISE 2µV 10 100 1k 10k P-P (DC – 10Hz) FREQUENCY (Hz) 1051/53 TA01b 10513fa 1
