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描述

The LTC882x family of single-, dual-, and quad- channel amplifiers features a maximized ratio of gain bandwidth (GBW) to supply current and is ideal for batterypowered applications such as wearables, handsets, tablets, and portable medical devices. Featuring rail-to-rail input and output swings, a wide bandwidth of 500-kHz combined with ultra-low supply current (typical 6.6 µA at VS =5.5V per amplifier) and low noise (6 μVP-P at 0.1 to 10 Hz) , the LTC882x family is an excellent choice for precision or general-purpose, low-current, low-voltage, battery-powered applications. The low input bias current supports these amplifiers to be used in applications with mega-ohm source impedances. The robust design of the LTC882x operational amplifiers provides ease-of-use to the circuit designer: integrated RF/EMI rejection filter, no phase reversal in overdrive conditions, and high electro-static discharge (ESD) protection (5-kV HBM). The LTC882x amplifiers are optimized for operation at voltages as low as +1.8 V (±0.9 V) and up to +5.5 V (±2.75 V). The LTC8821 (single) is available in both SOT23-5L and SC70-5L packages. The LTC8822 (dual) is offered in DFN-8L, SOIC-8L and MSOP-8L packages. The quad-channel LTC8824 is offered in both SOIC-14L and TSSOP-14L packages. All of the devices are specified over the extended temperature range of −40 ℃ to +125 ℃.

优势和特点

  • 500 kHz GBW
  • Ultra-Low 6.6 μA Supply Current (at 5.5V Supply, Per Amplifier)
  • Low Input Offset Voltage: 0.5 mV
  • Low Noise: 6 μVP-P at 0.1 to 10 Hz
  • Single 1.8 V to 5.5 V Supply Voltage Range
  • Rail-to-Rail Input and Output
  • Internal RF/EMI Filter
  • Extended Temperature Range: −40℃ to +125℃

应用

  • Battery-Powered Instruments:
– Consumer, Industrial, Medical, Notebooks
  • Wearable Fitness Devices
  • Audio Outputs
  • Sensor Signal Conditioning:
– Sensor Interfaces, Loop-Powered, Active Filters
  • Wireless Sensors:
– Home Security, Remote Sensing, Wireless Metering
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