The ADAQ4381-4 is a quad-channel precision data acquisition
(DAQ) signal chain μModule solution that reduces the development
cycle of a precision measurement system by transferring the signal
chain design challenges of component selection, optimization, and
layout from the designer to the device.
Using system-in-package (SIP) technology, the ADAQ4381-4
reduces end system component count by combining multiple common
signal processing and conditioning blocks into a single device.
These blocks include a quad-channel, high resolution 14-bit, 4
MSPS simultaneous sampling SAR ADC, low noise, fully differential
ADC driver amplifier, a 3.3 V precision voltage reference, low-noise
buffer amplifiers, and low-dropout linear regulator.
The ADAQ4381-4 has an on-chip oversampling blocks to improve
the dynamic range and reduce noise at lower bandwidths. The
oversampling can boost up to two bits of added resolution. It
provides the flexibility of a configurable ADC driver feedback loop to
allow four gain and attenuation adjustments, and accept both fully
differential or single-ended to differential input configuration.
Using Analog Devices, Inc. iPassives® technology, the
ADAQ4381-4 incorporates critical passive components with
superior matching and drift characteristics to minimize temperature
dependent error sources and to offer optimized signal chain
performance. Housed in a small 8 mm × 8 mm × 0.8 mm pitch, 81-
ball CSP_BGA package, the ADAQ4381-4 enables compact design
without sacrificing performance and simplifies end system bill of
materials management. The ADAQ4381-4's optimum performance
is guaranteed with a single 5 V supply operation, all the required
bypass and decoupling capacitors are included inside the package.
The level of ADAQ4381-4 system integration solves many design
challenges, which enables a compact and simple solution for a
multichannel application.
The conversion result can clock out simultaneously through 4-wire
mode for faster throughput or through 1-wire serial mode when
slower throughput is allowed. The ADAQ4381-4 is compatible with
1.8 V, 2.5 V, and 3.3 V interfaces using the separate logic supply.
The ADAQ4381-4 is specified to operate over a temperature range
of −40°C to +105°C.
APPLICATIONS
- Lab grade battery test system
- Motor control current sense
- Motor control position feedback
- Sonar
- Power quality monitoring
- Data acquisition system
- Erbium-Doped Fiber Amplifier (EDFA) applications
- I and Q demodulation
