GENERAL DESCRIPTION

The AD4030-24/AD4032-24 are 2 MSPS or 500 kSPS successive

approximation register (SAR), analog-to-digital converters (ADC)

with Easy Drive™. With a guaranteed maximum ±0.9 ppm integral

nonlinearity (INL) and no missing codes at 24-bits, the AD4030-24/

AD4032-24 achieve unparalleled precision from −40°C to +125°C.

Figure 1 shows the functional architecture of the AD4030-24/

AD4032-24.

A low drift, internal precision reference buffer eases voltage

reference sharing with other system circuitry. The AD4030-24/

AD4032-24 offer a typical dynamic range of 109 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 155.5 dB.

The wide differential input and common mode ranges allow inputs

to use the full ±VREF 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 AD4030-24/

AD4032-24. Both single-ended and differential signals are supported.

The versatile Flexi-SPI serial peripheral interface (SPI) 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 or 500 kSPS. Echo clock mode and ADC host clock

mode relax the timing requirements and simplify the use of digital

isolators.

The 7 mm × 7 mm, 64-Ball CSP_BGA package of the AD4030-24/

AD4032-24 integrates all critical power supply and reference bypass

capacitors, reducing the footprint and system component

count, and lessening sensitivity to board layout.

FEATURES

► High performance

► Throughput: 2 MSPS (AD4030-24) or 500 kSPS (AD4032-24)

options

► INL: ±0.9 ppm maximum from −40°C to +125°C

► SNR: 108.4 dB typical

► THD: −127 dB typical

► NSD: −169 dBFS/Hz typical

► Low power

► 30 mW at 2 MSPS

► 10 mW at 500 kSPS

► 3 mW at 10 kSPS

► Easy Drive™ features reduce system complexity

► Low 1.2 μA input current for dc inputs at 2 MSPS

► Wide common-mode input range: −(1/128) × VREF to

+(129/128) × VREF

► Flexible external reference voltage range: 4.096 V to 5 V

► Accurate integrated reference buffer with 2 μF bypass

capacitor

► Programmable block averaging filter with up to 216 decimation

► Extended sample resolution to 30 bits

► Overrange and synchronization bits

► Flexi-SPI digital interface

► 1, 2, or 4 SDO lanes allows slower SCK

► Echo clock mode simplifies use of digital isolator

► Compatible with 1.2 V to 1.8 V logic

► 7 mm × 7 mm, 64-Ball CSP_BGA package with internal supply

and reference capacitors to help reduce system footprint

APPLICATIONS

► Automatic test equipment

► Digital control loops

► Medical instrumentation

► Seismology

► Semiconductor manufacturing

► Scientific instrumentation