Texas Instruments ADS7809, User Manual, Page: 1 / 10

1 Introduction
1.1 Features
User's Guide
SLAU140 – November 2004
ADS78/8509 EVM User's Guide
Contents
1 Introduction
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1
2 Analog Interface
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2
3 Digital Interface
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3
4 Power Supplies
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3
5 EVM Operation
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4
6 EVM Bill of Materials and Schematic
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5
7 Related Documentation from Texas Instruments
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6
List of Tables
1 Pinout of the Analog Input Connector, J1
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2
2 Input Range Selection
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2
3 Pinout of J3
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3
4 Factory Default Jumper Locations
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5
5 Bill of Materials
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5
6 EVM Compatible Device Data Sheets, Users Guides and Additional Resources
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6
The ADS7809 and ADS8509 are complete 16-bit analog-to-digital (A/D) using state-of-the-art CMOS
structures. They contain a complete 16-bit, capacitor-based, successive approximation register (SAR) A/D
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 ADS7809 and ADS8509 also provide an
output synchronization pulse for ease of use with standard DSP processors.
The EVM is available with either the ADS7809 or ADS8509 installed. The EVM can also accommodate
the 12-bit ADS7808 simply removing and replacing the installed device. Samples of the ADS7808 can be
obtained through the sample program at Texas Instruments. See the ADS7808 Product Folder for details.
•
Full-Featured Evaluation Board for the ADS7808, ADS7809 or ADS8509, serial Analog to Digital
Converters
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4 V, 5 V, 10 V,
±
3.3 V,
±
5 V and
±
10 V Analog Input Ranges
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Built in reference
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High-Speed Serial Interface
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Compatible with the 5-6K Interface Board for use with a variety of DSP Starter Kits as well as the
HPA449 from SoftBaugh, Inc. (www.softbaugh.com).
•
Field Programmable Gate Array (FPGA) users can evaluate the ADS78/8509 EVM by obtaining the
Texas Instruments Analog Adapter Kit from Avnet Design Services (www.em.avnet.com).
ADS78/8509 EVM User's Guide SLAU140 – November 2004 1