18-Bit, 15 MSPS, μModule Data Acquisition Solution

The ADAQ23878 is a precision, high speed, μModule® data acquisition solution that reduces the development cycle of a precision measurement systems by transferring the design burden of component selection, optimization, and layout from the designer to the device.

Using System-in-Package (SIP) technology, the ADAQ23878 reduces end system component count by combining multiple common signal processing and conditioning blocks in a single device, including a low noise, fully differential ADC driver (FDA), a stable reference buffer, and a high speed, 18-bit, 15 MSPS successive approximation register (SAR) ADC.

The ADAQ23878 also incorporates the critical passive components with superior matching and drift characteristics using Analog Devices, Inc., iPassive® technology to minimize temperature dependent error sources and to offer optimized performance. The fast settling of the ADC driver stage and no latency of the SAR ADC provide a unique solution for high channel count multiplexed signal chain architectures and control loop applications.

The small footprint, 9 mm × 9 mm BGA package enables smaller form factor instruments without sacrificing performance. The system integration solves many design challenges while the device still provides the flexibility of a configurable ADC driver feedback loop to allow gain or attenuation adjustments, as well as fully differential or single-ended to differential input. A single 5 V supply operation is possible while achieving optimum performance from the device.

The ADAQ23878 features a serial low voltage differential signaling (LVDS) digital interface with one-lane or two-lane output modes, allowing the user to optimize the interface data rate for each application. The specified operation of the ADAQ23878 is from −40°C to +85°C.

APPLICATIONS

* Automatic test equipment

* Data acquisition

* Hardware in the Loop (HiL)

* Power analyzers

* Non-destructive test (acoustic emissions)

* Mass spectrometry

* Travelling wave fault location

* Medical imaging and instruments

* Integrated fully differential ADC driver with signal scaling

* Wide input common-mode voltage range

* High common-mode rejection

* Single-ended to differential conversion

* Pin selectable input range with overrange

* Input ranges with 4.096 V REFBUF: ±10 V, ±5 V, ±4.096 V, ±2.5 V, and ±1.5 V

* Gain/attenuation options: 0.37, 0.73, 0.87, 1.38, and 2.25

* Critical passive components

* 0.005% precision matched resistor array for FDA

* 9 mm × 9 mm, 0.8 mm pitch, 100-ball CSPBGA package

* 2.5× footprint reduction vs. discrete solution