Description

The LTC858x family of amplifiers provides very low input offset voltage (± 40 μV maximum) and low drift (± 0.5 μV/℃ maximum) characteristics with a design combination of a gain bandwidth product of 2 MHz and a high slew rate of 1.3 V/μs, while only drawing 150 μA supply current. These devices are unity gain stable and have good Power Supply Rejection Ratio (PSRR) and Common Mode Rejection Ratio (CMRR). 

The LTC858x series are perfectly suited for applications that require precision amplification of low level signals, in which error sources cannot be tolerated, even in which high bandwidth and fast transition are needed. The rail-to-rail input and output
swings make both high-side and low-side sensing easy. The LTC858x series can operate with a single supply voltage as low as 1.8 V for 2-cell battery applications.

The LTC858x op-amps have enhanced EMI protection to minimize any electromagnetic interference from external sources, and have high electro-static discharge (ESD) protection (5-kV HBM). All models are specified over the extended industrial temperature range of -40 ℃ to +125 ℃

 

Advantages And Characteristics

  • High DC Precision:
– ± 40 μV Maximum VOS with a Drift of ± 0.5 μV/℃ Maximum
– AVOL: 106 dB Minimum, at VS = 5V
– PSRR: 106 dB Minimum, at VS = 5V
– CMRR: 100 dB Minimum, at VS = 5V
– Vn: 1 μVPP, at 0.1 to 10 Hz
  • 2 MHz Bandwidth and 1.3 V/μs Slew Rate
  • Settling Time to 0.1% with 1V Step: 1.2 μs
  • 1.8 V to 5.5 V Wide Supply Voltage Range
  • 150 μA per Amplifier Low Power
  • Operating Temperature Range: -40℃ to +125℃


 

Application

  • Precision current sensing
  • Resistor thermal detectors
  • Temperature, position and pressure sensors
  • Medical equipment
  • Electronic scales
  • Strain gage amplifiers
  • Thermocouple amplifiers
  • Driving A/D Converters
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