ADS8513 Datasheet, PDF (1/24 Pages) Texas Instruments – 16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE

BurrĆBrown Products
from Texas Instruments
www.ti.com
ADS8513
SLAS486 – JUNE 2007
16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH
INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
FEATURES
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•2 40-kHz Min Sampling Rate
• Very Low Power: 25 mW
• ±3.33-V, ±5-V, ±10-V, 4-V, and 10-V Input
Ranges
• 89.9-dB SINAD with 10-kHz Input
• ±1.5 LSB Max INL
• ±1 LSB Max DNL, 16-Bit NMC
• ±5-mV BPZ, ±0.4 PPM/°C BPZ Drift
• 87-dB Min SINAD, 96-dB Min SFDR
• Uses Internal or External 2.5-V Reference
• No External Calibration Resistors Required
• Single 5-V Analog Supply
– 40-mW Max Power Dissipation
– 50-μW Max Power-Down Mode
• 20-Mhz Compatible SPI
• Global CONV and 3-Stated Bus for Multi-Chip
Simultaneous S/H Operation
• Pin-Compatible with ADS7813 and 12-Bit
ADS7812/8512
• SO-16 Package
APPLICATIONS
• Industrial Process Control
• Test Equipment
• Robotics
• DSP Servo Control
• Medical Instrumentation
• Portable Data Acquisition Systems
DESCRIPTION
The ADS8513 is a complete low-power, single 5-V
supply, 16-bit sampling analog-to-digital (A/D)
converter. It contains a complete 16-bit
capacitor-based, successive approximation register
(SAR) A/D converter with sample and hold, clock,
reference, and serial data interface. The converter
can be configured for a variety of input ranges
including ±10 V, ±5 V, 0 V to 10 V, and 0.5 V to
4.5 V. A high-impedance, 0.3-V to 2.8-V input is also
available with input impedance greater than 10 MΩ.
For most input ranges, the input voltage can swing to
25 V or –25 V without damage to the converter.
An SPI-compatible serial interface allows data to be
synchronized to an internal or external clock. The
ADS8513 is specified at 40-kHz sampling rate over
the industrial –40°C to 85°C temperature range.
Successive Approximation Register
Clock EXT/INT
R1_IN
R2_IN
R3_IN
BUF
CAP
REF
40 kΩ
8 kΩ
20 kΩ
CDAC
Comparator
Serial
Data
Out
&
Control
Buffer
4 kΩ
Internal
+2.5 V Ref
PWRD
BUSY
CS
CONV
SDATA
DATACLK
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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.
QSPI, SPI are trademarks of Motorola, Inc.
2
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