OPA2626IDGKT

The OPA2626 operational amplifier is a driver for 16-bit and 18-bit, high-precision successive approximation register (SAR) analog-to-digital converters (ADCs), featuring low total harmonic distortion (THD) and low noise. This operational amplifier has a 16-bit settling time of 280 ns under rated operating conditions and can provide a true 16-bit effective number of bits (ENOB). The device offers high DC accuracy (with an offset voltage of only 100 μV), a wide gain-bandwidth product of 120 MHz, and low broadband noise of 2.5 nV/√Hz. It is optimized to drive high-throughput, high-resolution SAR ADCs in applications such as the ADS88xx series of SAR ADCs. The OPA2626 comes in an 8-pin VSSOP package and is rated for an operating temperature range of -40°C to +125°C.

Applications

• Precision SAR ADC driver
• Precision voltage reference buffer
• Programmable logic controller
• Test and measurement equipment
• Scientific instrumentation
• High-throughput data acquisition systems
• High-density, multiplexed data acquisition systems

Key features

• Excellent dynamic performance:
• Low distortion: HD2 = –122dBc, HD3 = –140dBc at 100kHz
• Gain bandwidth (G = 100): 120MHz
• Slew rate: 115V/μs
• 16-bit settling time (4V step): 280ns
• Low voltage noise: 2.5nV/√Hz at 10kHz
• Low output impedance: 1Ω at 1MHz
• Excellent DC accuracy:
• Offset voltage: ±100μV (maximum)
• Offset voltage drift: ±3μV/°C (maximum)
• Low quiescent current: 2mA (typical)
• Input common-mode range includes negative supply rail
• Rail-to-rail output
• Wide rated temperature range: –40°C to +125°C