® DEM-PCM1710 EVALUATION FIXTURE FPO FEATURES DESCRIPTION ● DUAL MULTI-LEVEL NOISE SHAPING DAC WITH ON-CHIP DIGITAL FILTER ● HIGH PERFORMANCE: THD+N: 0.0025% Dynamic Range: 98dB typ S/N Ratio: 110dB typ The DEM-PCM1710 is an evaluation fixture for the PCM1710 (16/20-bit stereo digital-to-analog converter with on-chip digital filter) primarily intended for quick evaluation of the PCM1710’s performance. The DEM-PCM1710 is capable of either serial or parallel output, can accept either an external system clock (256fs or 384fs) or a user-installed crystal oscillator. Other digital input signals are: LRCK, BCK, and DATA. ● ANALOG VOLTAGE OUTPUT: VO = 3.2Vp-p ● ON-CHIP POST ANALOG LOW PASS FILTER ● SYSTEM CLOCK 256fs or 384fs ● ON-CHIP 8X OVERSAMPLING DIGITAL FILTER WITH: Soft Mute and Attenuator Digital De-Emphasis Double Speed Dubbing Mode All of the functions of the PCM1710 (De-Emphasis, Mute, Double Speed) can be easily controlled by onboard switches. Power supply requirement is +5V only. ● SINGLE +5V POWER SUPPLY International Airport Industrial Park • Mailing Address: PO Box 11400 Tel: (602) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • © 1994 Burr-Brown Corporation • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706 Telex: 066-6491 • FAX: (602) 889-1510 • Immediate Product Info: (800) 548-6132 LI-442 Printed in U.S.A. July, 1994 BLOCK DIAGRAM DS LRCIN C DIN N BCKIN 1 CLKO XTI PCM1710U C ML/DSD N MC/DM2 2 MC/DM1 GND +VCC CN3 C O U T • R D D C O G O O U N U U T D T T • • • R L L COMPONENT LOCATION AND FUNCTION 1 2 3 4 5 CN2 CKSL DM1 MODE DM2 DSO OFF Operation Mode Dip Switch + ML MC MD GND +VCC (+5V) ® DEM-PCM1710 + COUT • L LRCI C N 1 PCM1710 + DOUT • L DIN + GND BCK CLKO DOUT • R + XTI COUT• R System Clock Components (Not Installed) NOTE: See Burr-Brown data sheet for PCM1710U (PDS-1217) for complete operation description and instructions for the PCM1710U. ® DEM-PCM1710 2 C N 3 CIRCUIT DIAGRAM CN1 DS LRCIN 1 28 DSO DM2 DIN 2 27 BCKIN 3 26 DM1 CLKO 4 25 MODE XTI 5 24 CKSL XTO 6 23 7 22 8 9 20 (1) 10 19 11 18 12 17 13 16 14 15 10µF 21 (1) (1) ML + C N 2 10µF + PCM1710U (1) MD GND +VCC + (1) 0.1µF + MC 100µF + NOTE: (1) Bypass Capacitor. CN3 C O U T • R D D O G O U N U T D T • • R L C O U T • L ® 3 DEM-PCM1710 PATTERN LAYOUT TOP BOTTOM ® DEM-PCM1710 4