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描述

The LTA8181, LTA8182 and LTA8184 (LTA818x) are a family of zero-drift, low power, rail-to-rail output operational amplifiers capable of operating on wide supplies ranging from +4.5 V (±2.25 V) to +48 V (±24 V). The LTA818x op-amps use Linearin‘s proprietary auto-zeroing techniques to offer outstanding dc precision and ac performance, including low offset voltage (25 μV maximum), near zero-drift over time and temperature, 4 MHz bandwidth, and 0.32 μVPP input voltage noise at 0.1 Hz to 10 Hz. These high-precision, low-quiescent-current op-amps offer high input impedance and rail-to-rail output swing within 10 mV of the rails. The input common-mode range includes the negative rail.

The single version LTA8181 device is available in micro-size MSOP-8L, SOT-23-5L, and SOIC-8L packages. The dual version LTA8182 device is offered in MSOP-8L and SOIC-8L packages. The quad version LTA8184 device is offered in SOIC-14L and TSSOP-14L packages. All versions are specified for operation from –40°C to +125°C.

优势和特点

  • High DC Precision
– ±25 μV (maximum) VOS with a Drift of ±50 nV/℃
– CMRR: 132 dB
– PSRR: 135 dB
– AVOL: 136 dB
– Vn : 0.32 μVPP (0.1 to 10 Hz)
  • Wide Supply: ±2.25 V to ±24 V, 4.5 V to 48 V
  • Gain Bandwidth: 4 MHz
  • Slew Rate: 2.6 V/μs
  • Low Quiescent Current: 600 μA per amplifier
  • Low Bias Current: ±150 pA
  • Rail-to-Rail Output Operation

应用

  • High-Side and Low-Side Current Sensing
  • Transducer Amplifiers
  • Precision Active Filters
  • Programmable Logic Controllers
  • Test and Measurement Equipment
  • Multiplexed Data-Acquisition Systems
  • Tracking Amplifier in Power Modules
  • Power Delivery: UPS, Server, and Merchant Network Power
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