Philips TDA8798HL free download

File name TDA8798HL.pdf

APPLICATION NOTE - TDA8798HL DUAL 8-BIT A/D CONVERTER WITH DPGA DEMONSTRATION BOARD AN/99055 Philips Semiconductors - TDA8798HL DEMONSTRATION BOARD Application Note AN99055 APPLICATION NOTE - TDA8798HL DUAL 8-BIT A/D CONVERTER WITH DPGA DEMONSTRATION BOARD AN/99055 Author: Stйphane JOUIN Systems & Applications Laboratories - Caen FRANCE Keywords: TDA8798HL Demoboard Dual 8-bit ADC High speed Low power DPGA Date: October 1999 -2- Philips Semiconductors - TDA8798HL DEMONSTRATION BOARD Application Note AN99055 CONTENTS 1. 2. 3. 4. MAIN FEATURES OF THE TDA8798HL: ... 5 PRINCIPLE AND DESCRIPTION OF THE BOARD: ... 8 OVERVIEW OF THE BOARD:... 10 PCB DESIGN:... 13 4.1 4.2 4.3 MICROSTRIP LINES: ... 14 POWER SUPPLY WIRE:... 14 ANALOG AND DIGITAL RETURN GROUND POINT:... 14 5. SPECIAL FEATURES OF THE APPLICATION BOARD:... 15 5.1 5.2 5.3 5.4 5.5 DPGA ANALOG INPUTS VIN1: ... 15 EXTERNAL FILTER:... 16 ADC ANALOG INPUTS BUF1 AND BUF1N: ... 18 DATA OUTPUT A0 TO A7:... 18 ADC ANALOG, DIGITAL AND OUTPUT STAGES POWER SUPPLY:... 19 6. ENVIRONMENT CIRCUITS:... 20 6.1 6.2 6.3 6.4 6.5 GENERAL POWER SUPPLY: ... 20 EXTERNAL CLOCK SELECTOR: ... 21 D-TYPE FLIP-FLOP INTERFACE: ... 22 MANUAL INTERFACE: ... 23 MULTIPLEXER: ...