AD4693

The AD4693/AD4694 are compact, high accuracy, 8-channel, 16-bit successive approximation register (SAR) analog-to-digital converters (ADCs) optimized for high-density multichannel precision data acquisition solutions. The AD4693/AD4694 combine precision performance with Easy Drive features and flexible digital processing to ensure compatibility with space-constrained analog front-end (AFE)designs and low-power digital hosts.The AD4693/AD4694 Easy Drive features broaden the selection of compatible amplifiers and voltage references. The precharge buffers enable smaller and lower power AFE designs by significantly reducing input voltage and current transients that typically force AFEs to include high-bandwidth ADC driver amplifiers per channel. The WLCSP model also includes an integrated reference buffer which provides a true, buffered reference input.The AD4693/AD4694 digital features and serial interface are optimized for use with low-power or power-cycled microcontrollers. The AD4693/AD4694 include averaging filters per channel and a customizable channel sequencer, which combined enable on-chip noise filtering with channel-independent averaging ratios. An integrated burst sampling timer enables autonomous and burst sampling schemes to perform conversions with minimal digital resources. Device configuration and ADC data readback are supported via a robust, 4-wire serial peripheral interface (SPI) with optional cyclic redundancy check (CRC).The AD4693/AD4694 are available in a 4mm × 4mm, 24-lead lead frame chip scale package (LFCSP) and a 2.96mm × 2.96mm, 36-ball wafer level chip scale package (WLCSP) with operation specified from −40°C to +125°C.