16-Bit, 15 MSPS,
µModule Data Acquisition Solution
ADAQ23875
Data Sheet
FEATURES
GENERAL DESCRIPTION
The ADAQ23875 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.
Integrated fully differential ADC driver with signal scaling
Wide input common-mode voltage range
High common-mode rejection
Single-ended to differential conversion
2.048 V input range with 4.096 V REFBUF
Critical passive components
0.005% precision matched resistor array for FDA
9 mm × 9 mm, 0.80 mm pitch, 100-ball CSP_BGA package
4× footprint reduction vs. discrete solution
Low power, dynamic power scaling, power-down mode
143 mW typical at 15 MSPS
Throughput: 15 MSPS, no pipeline delay
INL: 0.6 LSB typical, 1 LSB maximum
SINAD: 89 dB typical at 1 kHz
Using system-in-package (SIP) technology, the ADAQ23875
reduces end system component count by combining multiple
common signal processing and conditioning blocks in a single
device, solving many design challenges. These blocks include a
low noise, fully differential analog-to-digital converter (ADC)
driver (FDA), a stable reference buffer, and a high speed, 16-bit,
15 MSPS successive approximation register (SAR) ADC.
Using Analog Devices, Inc., iPassives® technology, the
ADAQ23875 also incorporates crucial passive components
with superior matching and drift characteristics to minimize
temperature dependent error sources and to offer optimized
performance (see Figure 1). The fast settling of the ADC driver
stage, with fully differential or single-ended to differential input
and no latency of the SAR ADC, provides a unique solution for
high channel count multiplexed signal chain architectures and
control loop applications.
THD: −115 dB at 1 kHz, −106 dB at 400 kHz
Gain error: 0.005%FS typical
Gain error drift: 1 ppm/°C maximum
On-board reference buffer with VCMO generation
Serial LVDS interface
Wide operating temperature range: −40°C to +85°C
APPLICATIONS
ATE
The small footprint, 9 mm × 9 mm CSP_BGA package enables
smaller form factor instruments without sacrificing performance.
Single, 5 V supply operation is possible while achieving optimum
performance from the device. The ADAQ23875 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 μModule is from −40°C to +85°C.
Data acquisition
Hardware in the Loop (HiL)
Power analyzers
Nondestructive test (acoustic emissions)
Mass spectrometry
Travelling wave fault location
Medical imaging and instruments
Ultrasonic flow meters
FUNCTIONAL BLOCK DIAGRAM
EXAMPLE 1
EXAMPLE 2
EXAMPLE 3
VS+
REFIN
0.1µF
15kΩ
VCMO
REFBUF VDD
0.1µF
0.5
IN+ IN–
+1.024V
+4V
–1.024V
+4V
+4V
0.1µF
0.2µF
2.048V
REFERENCE
2
10µF
0.1µF
VIO
1.3pF
1.3pF
1.1kΩ
82pF
24.9Ω
IN+ IN–
IN–
550Ω
550Ω
CNV+, CNV–
DA+/DA–, DB+/DB–,
DCO+, DCO–
+1.024V
0V
–1.024V
0V
0V
VCMO
FDA
16-BIT, 15MSPS ADC
IN+
24.9Ω
82pF
CLK+, CLK–
1.1kΩ
IN–
IN+
0.1µF
+1.024V
–1V
–1.024V
SERIAL LVDS
INTERFACE
–1V
–1V
ADAQ23875
PDB_AMP
VS–
GND PDB_ADC
Figure 1. ADAQ23875 Configured for Gain = 2, 2.048 V Differential Input Range
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice.
No license is granted by implication or otherwise under any patent or patent rights of Analog
Devices. Trademarks and registeredtrademarks are the property oftheir respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Technical Support
©2020 Analog Devices, Inc. All rights reserved.
www.analog.com
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