The AD4001 from Analog Devices is a low noise, low power, high speed, 16-bit, 2 MSPS, precision successive approximation register (SAR) analog-to- digital converter (ADC). The ADC has a ±VREF fully differential input range with VREF ranging from 2.4 V to 5.1 V. It consumes only 16 mW of power when operating at at 2 MSPS sample rate with a minimum SCK rate of 70 MHz in turbo mode and achieves ±0.4 LSB integral nonlinearity error (INL) maximum, guaranteed no missing codes at 16 bits with 96.2 dB typical signal-to-noise ratio (SNR).
The reference voltage is applied externally and can be set independently of the supply voltage. The SPI-compatible, versatile serial interface features seven different modes including the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply. The ADC is available in a 10-lead MSOP or a 10-lead LFCSP and is ideal for automatic test equipment, machine automation and medical equipment. The device operates over a temperature range of -40°C to +125°C and is pin compatible with the AD4003 18-bit, 2 MSPS, precision SAR differential ADC.
