La description
The AD*****4/AD*****4/AD*****4
are **-bit, **-bit, and **-bit compatible, quad, simultaneous
sampling, high-speed, successive approximation register (SAR),
analog-to-digital converters (ADCs) operating from a 3.0 V to 3.3 V
power supply with throughput rates up to 4 MSPS. The single-ended
analog accepts voltage from 0 V to VREF, and is sampled and
converted on the falling edge of CS.
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The AD*****4/AD*****4/AD*****4
have on-chip oversampling blocks to improve dynamic range and
reduce noise at lower bandwidths. The oversampling can boost up to
two bits of added resolution. The REFIO pin can have a reference
voltage (VREF) of 2.5 V to 3.3 V.
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The conversion process and data
acquisition use standard control s, allowing easy interfacing
to microprocessors or digital signal processors (DSPs). The
conversion result can clock out simultaneously via *-wire mode for
faster throughput or via *-wire serial mode when slower throughput
is allowed. The device is compatible with 1.8 V, 2.5 V, and 3.3 V
interfaces using the separate logic supply.
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The AD*****4/AD*****4/AD*****4
are available in a **-lead lead frame chip scale package (LFCSP)
and operate over a temperature range of −*0°C to
***5°C
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