ADS8519_08 Datasheet, PDF (1/27 Pages) Texas Instruments – 16-Bit, 250kSPS, Serial, CMOS, Sampling ANALOG-TO-DIGITAL CONVERTER

ADS8519
www.ti.com
SLAS462A – JUNE 2007 – REVISED MARCH 2008
16-Bit, 250kSPS, Serial, CMOS, Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
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•23 0V to 8.192V, ±5V, and ±10V Input Ranges
• 93dB SNR with 20kHz Input
• ±1.5LSB Max INL
• ±1LSB Max DNL; 16 Bits, No Missing Codes
• SPI™-Compatible Serial Output with
Daisy-Chain (TAG) Feature and 3-State Bus
• 5V Analog Supply, 1.65V to 5.25V I/O Supply
• Pinout Similar to 16-Bit ADS7809 (Low-Speed)
and 12-Bit ADS7808 and ADS8508
• No External Precision Resistors Required
• Uses Internal or External Reference
• 110mW Typ Power Dissipation at 250kSPS
• 28-Pin SSOP Package
• Simple DSP Interface
APPLICATIONS
• Industrial Process Control
• Data Acquisition Systems
• Digital Signal Processing
• Medical Equipment
• Instrumentation
DESCRIPTION
The ADS8519 is a complete 16-bit sampling
analog-to-digital (A/D) converter using state-of-the-art
CMOS structures. It contains a complete 16-bit,
capacitor-based, successive approximation register
(SAR) A/D converter with sample-and-hold,
reference, clock, and a serial data interface. Data can
be output using the internal clock or synchronized to
an external data clock. The ADS8519 also provides
an output synchronization pulse for ease-of-use with
standard DSP processors.
The ADS8519 is specified at a 250kSPS sampling
rate over the full temperature range. Internal precision
resistors provide various input ranges including ±10V,
±5V, and 0V to 8.192V, while the innovative design
allows operation from a single 5V supply with power
dissipation under 125mW.
The ADS8519 is available in a 28-pin SSOP
package, and is fully specified for operation over the
industrial –40°C to +85°C temperature range.
Successive Approximation Register
Clock EXT/INT
R1_IN
R2_IN
R3_IN
7kΩ
7kΩ
2.87kΩ
CAP
REF
25.67kΩ
CDAC
Buffer
4kΩ
Internal
+4.096V Ref
Comparator
Serial
Data
Out
and
Control
BUSY
DATACLK
TAG
DATA
R/C
SB/BTC
CS
PWRD
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SPI is a trademark of Motorola, Inc.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2008, Texas Instruments Incorporated