LTC6362 Differential Amplifier

By Analog Devices Inc 202

LTC6362 Differential Amplifier

Linear Technology's LTC6362 is a low-power, low-noise differential op amp with rail-to-rail input and output swing that has been optimized to drive low power SAR ADCs. The LTC6362 draws only 1 mA of supply current in active operation, and features a shutdown mode in which the current consumption is reduced to 70 µA.

The amplifier may be configured to convert a singleended input signal to a differential output signal, and is capable of being operated in an inverting or noninverting configuration.

Low offset voltage, low-input bias current, and a stable, high-impedance configuration make this amplifier suitable for use, not only as an ADC driver but also earlier in the signal chain, in converting a precision sensor signal to a balanced (differential) signal for processing in noisy industrial environments.

The LTC6362 is available in an 8-lead MSOP package and also in a compact 3 mm x 3 mm 8-pin leadless DFN package, operating with guaranteed specifications over a -40°C to +125°C temperature range.

  • 1 mA supply current
  • Single 2.8 V to 5.25 V supply
  • Fully-differential input and output
  • 200 µV maximum offset voltage
  • 260 nA maximum input bias current
  • Fast settling: 550 ns to 18-bit, 8 VP-P output
  • Low distortion: -116 dBc at 1 kHz, 8 VP-P
  • Rail-to-rail inputs and outputs
  • 3.9 nV/√Hz input-referred noise
  • 180 MHz gain-bandwidth product
  • 34 MHz, 3 dB bandwidth
  • Low power shutdown: 70 µA
  • 8-lead MSOP and 3 mm x 3 mm 8-lead DFN packages
  • 16-bit and 18-bit SAR ADC drivers
  • Single-ended-to-differential conversion
  • Low-power pipeline ADC driver
  • Differential line drivers
  • Battery-powered instrumentation