ADS8519 Datasheet, PDF (1/25 Pages) Texas Instruments – 16-BIT 250-KSPS SERIAL CMOS SAMPLING ANALOG-TO-DIGITAL CONVERTER

BurrĆBrown Products
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ADS8519
SLAS462 – JUNE 2007
16-BIT 250-KSPS SERIAL CMOS SAMPLING ANALOG-TO-DIGITAL CONVERTER
FEATURES
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• 0-V to 8.192-V, ±5-V, and ±10-V Input Ranges
• 90-dB SNR With 20-kHz Input
• ±2.0 LSB Max INL
• ±1 LSB Max DNL; 16-Bits No Missing Codes
• SPI Compatible Serial Output with
Daisy-Chain (TAG) Feature and 3-State Bus
• 5-V Analog Supply, 5.25 V ~ 1.65 V I/O Supply
• Pinout Similar to ADS7809 (Low Speed) and
12-Bit ADS7808/8508
• No External Precision Resistors Required
• Uses Internal or External Reference
• 100-mW Typ Power Dissipation at 250 KSPS
• 32-Pin 5x5 QFN and 28-Pin SSOP Packages
• 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 can be
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 250-kHz sampling rate
over the full temperature range. Precision resistors
provide various input ranges including ±10 V and 0 V
to 5 V, while the innovative design allows operation
from a single 5-V supply with power dissipation under
100 mW.
The ADS8519 is available in 32-pin 5x5 QFN and
28-pin SSOP packages, both 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
7 kΩ
7 kΩ
2.87 kΩ
25.67 kΩ
CAP
REF
CDAC
Buffer
4 kΩ
Internal
+4.096 V Ref
Comparator
Serial
Data
Out
&
Control
BUSY
DATACLK
TAG
DATA
R/C
SB/BTC
CS
PWRD
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data and
other specifications are design goals. Texas Instruments reserves
the right to change or discontinue these products without notice.
Copyright © 2007, Texas Instruments Incorporated