AD4630-24 Analog-to-Digital Converter (ADC)

ADI's AD4630-24 is a two-channel, simultaneous sampling, Easy Drive, 2 MSPS SAR ADC. With a guaranteed maximum ±0.9 ppm INL and no missing codes at 24-bits, the AD4630-24 achieves unparalleled precision from -40°C to +125°C.

A low-drift, internal precision reference buffer eases voltage reference sharing with other system circuitry. The AD4630-24 offers a typical dynamic range of 106 dB when using a 5 V reference. The low noise floor enables signal chains requiring less gain and lower power. A block averaging filter with programmable decimation ratio can increase dynamic range up to 153 dB. The wide differential input and common-mode ranges allow inputs to use the full ±V_REF range without saturating, simplifying signal conditioning requirements and system calibration. The improved settling of the Easy Drive analog inputs broadens the selection of analog front-end components compatible with the AD4630-24. Both single-ended and differential signals are supported.

The versatile Flexi-SPI serial interface eases host processor and ADC integration. A wide data clocking window, multiple SDO lanes, and optional dual data rate (DDR) data clocking can reduce the serial clock to 10 MHz while operating at a sample rate of 2 MSPS. Echo clock mode and ADC master clock mode relax the timing requirements and simplify the use of digital isolators.

The 64-ball chip scale package ball grid array (CSP_BGA) of the AD4630-24 integrates all critical power supply and reference bypass capacitors, reducing the footprint and system component count, and lessening sensitivity to board layout.

The EVAL-AD4630-24FMCZ evaluation board enables quick and easy evaluation of the AD4630 family of 24-bit precision SAR ADCs.

Features

• Linearity is guaranteed at ±0.9 ppm
• Wide common-mode input range and Easy Drive inputs improve compatibility with companion circuitry
• Flexi-SPI relaxes user interface timing requirements without compromising performance
• Innovative packaging relaxes device layout guidelines