OPA625

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design OPA625, OPA2625 SBOS688A – APRIL 2015 – REVISED OCTOBER 2015 OPAx625 High-Bandwidth, High-Precision, Low THD+N, 16-Bit and 18-Bit Analog-to-Digital Converter (ADC) Drivers 1 Features 1 High-Drive Mode: – GBW (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 – Low Output Impedance: 1 Ω at 1 MHz – Offset Voltage: ±100 µV (max) – Offset Voltage Drift: ±3 µV/ºC (max) – Low Quiescent Current: 2 mA (typ) Low-Power Mode: – GBW: 1 MHz – Low Quiescent Current: 270 µA (typ) Power-Scalable Features: – Ultrafast Transition from Low-Power to HighDrive Mode: 170 ns High AC and DC Precision: – Low Distortion: –122 dBc for HD2 and –140 dBc for HD3 at 100 kHz – Input Common-Mode Range Includes Negative Rail – Rail-to-Rail Output – Wide Temperature Range: Fully Specified from –40°C to +125°C 3 Description The OPAx625 family of operational amplifiers are excellent 16-bit and 18-bit, high-precision, SAR ADC drivers with low THD and noise that allow for a unique power-scalable solution. This family of devices 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 gainbandwidth product of 120 MHz, and a low wideband noise of 2.5 nV/√Hz, this family is optimized for driving...