AD7265

Data Sheet AD7265 Differential/Single-Ended Input, Dual 1 MSPS, 12-Bit, 3-Channel SAR ADC FEATURES ► Dual 12-bit, 3-channel ADC ► Throughput rate: 1 MSPS ► Specified for VDD of 2.7 V to 5.25 V ► Power consumption ► 7 mW at 1 MSPS with 3 V supplies ► 17 mW at 1 MSPS with 5 V supplies ► Pin-configurable analog inputs ► 12-channel single-ended inputs ► 6-channel fully differential inputs ► 6-channel pseudo differential inputs ► 70 dB SINAD at 50 kHz input frequency ► Accurate on-chip reference: 2.5 V ► ±0.2% maximum at 25°C, 20 ppm/°C maximum ► Dual conversion with read 875 ns, 16 MHz SCLK ► High speed serial interface ► SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible ► −40°C to +125°C operation ► Shutdown mode: 1 µA maximum ► 32-lead LFCSP and 32-lead TQFP ► 2 MSPS version, AD7266 GENERAL DESCRIPTION The AD72651 is a dual, 12-bit, high speed, low power, successive approximation ADC that operates from a single 2.7 V to 5.25 V power supply and features throughput rates of up to 1 MSPS. The device contains two ADCs, each preceded by a 3-channel multiplexer, and a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 30 MHz. The conversion process and data acquisition use standard control inputs allowing easy interfacing to microprocessors or DSPs. The input signal is sampled on the falling edge of CS; conversion is also initiated at this point. The conversion time is determined by the SCLK frequency. The AD7265 uses advanced design techniques t...