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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