Current-to-Digital ADC. ADAS1126 Datasheet

ADAS1126 ADC. Datasheet pdf. Equivalent

ADAS1126 Datasheet
Recommendation ADAS1126 Datasheet
Part ADAS1126
Description 24-Bit Current-to-Digital ADC
Feature ADAS1126; Data Sheet 32-Channel, 24-Bit Current-to-Digital ADC ADAS1126 FEATURES GENERAL DESCRIPTION 32-ch.
Manufacture Analog Devices
Datasheet
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Analog Devices ADAS1126
Data Sheet
32-Channel, 24-Bit Current-to-Digital ADC
ADAS1126
FEATURES
GENERAL DESCRIPTION
32-channel, low level current-to-digital converter
Up to 24-bit resolution
Up to 19.7 kSPS (50.7 µs integration time)
Simultaneous sampling
Ultralow noise (down to 0.4 fC [2500e])
User-adjustable full-scale range
INL: ±0.025% of reading ±0.75 ppm of FSR
Very low power dissipation: 12.5 mW/channel
LVDS self-clocked serial data interface
SPI configuration registers (daisy-chain)
On-board temperature sensor and reference buffer
10 mm × 10 mm, mini-BGA package
Low cost external components
Support tools
Evaluation board
Reference design with reference layout
FPGA Verilog code
The ADAS1126 is a 32-channel, current-to-digital, analog-to-
digital converter (ADC). It contains 32 low power, low noise,
low input current integrators, simultaneous sample-and-holds,
and a high speed, high resolution ADCs with configurable
sampling rate and resolutions up to 24 bits.
All converted channel results are output on a single LVDS self-
clocked serial interface, which reduces external hardware.
An SPI-compatible serial interface allows configuration of the
ADC using the SDI input. The SDO output allows the user to
daisy-chain several ADCs on a single, 3-wire bus. The
ADAS1126 uses the separate supply IOVDD to reduce the
digital noise effect on the conversions.
The ADAS1126 is in a 10 mm × 10 mm, mini-BGA package.
APPLICATIONS
Medical, industrial, and security CT scanner data acquisition
Photodiode sensors
Dosimetry and radiation therapy systems
Optical fiber power monitoring
X-ray detection systems
High channel-count data acquisition systems (current or
voltage inputs)
FUNCTIONAL BLOCK DIAGRAM
2.5V 3.3V TO NEXT SDI
SDO
TO ALL ADCs
AN0
AN15
AN16
AN31
KGND
F
OR0
S/H
F
OR15
S/H
F
OR16
S/H
F
OR31
S/H
+
ADCH
CONFIGURATION
SDI
DATA
PROCESSING
OR(0:31)
LVDS/CMOS
INTERFACE
TEMP
SCK
CS
RESET
DOUTx
CLKx
SYNC
IOVDD
IOGND
FPGA
2.5V
VIO
SDI
BUFP BUFN
REF
2.048V
SDI
FROM DOUT OF
FROM PREVIOUS OTHER ADCs
SDO
Figure 1.
For more information about the ADAS1126, email: adas@analog.com.
Rev. SpC
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Technical Support
www.analog.com



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DOCUMENTATION
Data Sheet
ADAS1126: 32-Channel, 24-Bit Current-to-Digital ADC
Two Page Data Sheet
REFERENCE MATERIALS
Technical Articles
MS-2210: Designing Power Supplies for High Speed ADC
Semiconductors: The Heart of Next-Generation Medical
Devices
DESIGN RESOURCES
ADAS1126 Material Declaration
PCN-PDN Information
Quality And Reliability
Symbols and Footprints
DISCUSSIONS
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SAMPLE AND BUY
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Analog Devices ADAS1126
ADAS1126
NOTES
Data Sheet
©2010-2013 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D08786F-0-10/13(SpC)
Rev. SpC | Page 2 of 2







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