OPA2626 Analog-to-Digital Converter Driver

OPA2626 Analog-to-Digital Converter Driver

Texas Instruments' OP2626 operational amplifier is a 16-bit and 18-bit, high-precision, SAR ADC driver with low total harmonic distortion (THD) and noise. This precision op amp is fully characterized and specified with a 16-bit settling time of 280 ns that enables a true 16-bit effective number of bits (ENOB). With a high DC precision of only 100 µV offset voltage, a wide gain-bandwidth product of 120 MHz, and a low wideband noise of 2.5 nV/√Hz, this op amp is optimized for driving high-throughput, high-resolution SAR ADCs in applications such as the ADS88xx family of SAR ADCs.

The OPA2626 operational amplifier is available in an 8-pin VSSOP package and is specified for operation from -40°C to 125°C.

  • Excellent dynamic performance 
  • Low distortion: -122 dBc for HD2 and -140 dBc for HD3 at 100 kHz
  • Gain bandwidth (G = 100): 120 MHz
  • Slew rate: 115 V/µs
  • 16-bit settling at 4 V step: 280 ns
  • Low voltage noise: 2.5 nV/√Hz at 10 kHz
  • Excellent DC precision: offset voltage: ±100 µV (max.)
  • Low output impedance: 1 Ω at 1 MHz
  • Offset voltage drift: ±3 µV/°C (max.)
  • Low quiescent current: 2 mA (typ.)
  • Input common-mode range includes negative rail
  • Rail-to-rail output
  • Wide temperature range: fully specified from -40°C to 125°C

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