Analog Devices Inc. ADAQ4216 µModule® Precision Data-Acquisition (DAQ)

Analog Devices ADAQ4216 µModule® Precision Data-Acquisition (DAQ) implements a signal-chain solution that decreases the development cycle of a precision measurement system by transferring the signal-chain challenge of component selection, optimization, and layout from the developer to the device. Ensuring a maximum ±3ppm INL and no missing codes at 16-bits, the ADI ADAQ4216 achieves unparalleled precision within -40°C to +105°C.

Using system-in-package (SIP) technology, the ADAQ4216 merges the standard signal processing blocks needed in a data-acquisition solution. The Flexi-SPI serial-user interface is compatible with 1.2V to 1.8V and utilizes a separate VIO supply.

The ADAQ4216 integrates the following:

•A low-noise, high-bandwidth programmable gain instrumentation amplifier (PGIA)

•A second-order anti-aliasing filter

•A low-noise, low-distortion, high-bandwidth analog‐to‐digital converter (ADC) driver

•A high precision 16-bit, 2MSPS successive approximation register (SAR) ADC

•A 1.8V low dropout (LDO) regulator

•Performance critical passives

The ADAQ4216 is specified for operation from -40°C to +105°C and is housed in a small, 14mm x 9mm, 0.8mm pitch, 178-ball CSP_BGA package.

FEATURES

•Highly performance

Throughput of 2MSPS, no latency

INL of ±3ppm maximum from -40°C to 105°C

Total system dynamic range of 123dB typical

SNR: 97.5dBFS typical, THD of -122dBc typical

Offset error drift of +5.05μV/°C maximum

Gain error drift of +1.17ppm/°C maximum

•Ease of use features reduce system complexity

Second-order, 270kHz anti-aliasing filter

High-Z PGIA gain options of 1/3, 5/9, 20/9, 20/3

Flexible external reference voltage of 4.096V or 5V

Differential input voltage ranges, ±REFIN/Gain of ±15V, ±9V, ±2.25V, ±0.75V

Wide input common-mode voltage range of -8V to +10V

Low input bias current of -30pA typical

•High-density solution reduces system footprint

14mm x 9mm, 0.8mm pitch, 178-ball CSP BGA

4× footprint reduction vs. equivalent discrete solution

On-board reference buffer with an internal VCM generation

•Total power dissipation of 445mW typical at 2MSPS

•Flexi-SPI digital interface

1, 2, or 4 SDO lanes allow slower SCK

Echo clock mode simplifies the use of a digital isolator

Compatible with 1.2V to 1.8V logic

PGIA gain control (A0, A1) interface

Extended sample resolution to 30-bits

Overrange and synchronization bits

APPLICATIONS

•Automatic test equipment

•Machine automation

•Process controls

•Medical and industrial instrumentation

•Digital control loops

FUNCTIONAL BLOCK DIAGRAM