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ADS4449EVM 产品设计参考手册 - TI（德州仪器）
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ADS4449EVM数据手册
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User's Guide
SLAU485–January 2013
ADS4449 User Guide
This document serves as a user’s guide for the ADS4449 Evaluation Module (EVM). The EVM provides a
platform for evaluating the ADS4449, a quad-channel, 14-bit telecommunications analog-to-digital
converter (ADC) operating at sampling rates of up to 250 MSPS. Designed for low-power consumption
and high spurious free dynamic range (SFDR), the ADC has low-noise performance and outstanding
SFDR over a large input-frequency range. The four ADC channels are separated into two blocks with two
ADCs each.
This EVM is ideally suited for mating with the TSW1400 Capture Card for performing a data capture into a
capture buffer, uploading the sample data to a PC, performing an FFT, and reporting on SNR, SFDR, and
other performance metrics.
For more information regarding the ADS4449 and the related evaluation tools, please refer to the
following:
• ADS4449 – Quad 14-bit 250-MSPS ADC (SBAS603)
• TSW1400 – High-Speed Data Capture and Pattern Generation Platform (SLWU079)
• ADS4449 EVM Configuration Software (SLAC566).
Contents
1 Introduction .................................................................................................................. 2
1.1 EVM Block Diagram ............................................................................................... 2
1.2 EVM Power Supply ................................................................................................ 3
1.3 EVM Connectors and Jumpers ................................................................................... 4
1.4 EVM ADC Input Circuit Configurations .......................................................................... 6
2 Software Control ............................................................................................................ 6
2.1 Installation Instructions ............................................................................................ 6
2.2 Software Operation ................................................................................................ 7
3 Basic Test Procedure ....................................................................................................... 9
3.1 Test Block Diagram ................................................................................................ 9
3.2 Test Set-up Connection .......................................................................................... 10
3.3 ADS4449 Software Quick Start Guide ......................................................................... 10
3.4 ADS4449 and TSW1400 Setup Guide ........................................................................ 11
List of Figures
1 Simplified ADS4449 EVM Block Diagram ............................................................................... 2
2 Simplified ADS4449 EVM Power Supply ................................................................................ 3
3 ADS4449 EVM Connector and Jumper Locations...................................................................... 4
4 ADS4449 ADC Input Circuit ............................................................................................... 6
5 ADS4449 Clock Input Circuit .............................................................................................. 6
6 ADS4449 Main Control Panel............................................................................................. 7
7 ADS4449 Special Modes Panel........................................................................................... 8
8 ADS4449 and TSW1400 Test Setup Block Diagram .................................................................. 9
9 Select ADS4449 in the High Speed Converter Pro GUI Program .................................................. 11
10 Load ADC Firmware Prompt............................................................................................. 11
11 ADS4449 14-bit Operating Mode, Single Tone Test Result: Fs = 245.76 MSPS, Fin = 170 MHz ............. 12
1
SLAU485–January 2013 ADS4449 User Guide
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