Multichannel 96 kHz Codec AD1836A FEATURES APPLICATIONS 5 V multichannel audio system Accepts 16-/18-/20-/24-bit data Supports 24-bit and 96 kHz sample rate Multibit - modulators with data directed scrambling Differential output for optimum performance ADCs: -92 dB THD + N, 105 dB SNR and dynamic range DACs: -95 dB THD + N, 108 dB SNR and dynamic range On-chip volume control with "auto-ramp" function Programmable gain amplifier for ADC input Hardware and software controllable clickless mute Digital de-emphasis processing Supports 256 x fS, 512 x fS, or 768 x fS master clock Power-down mode plus soft power-down mode Flexible serial data port with right justified, left justified, I2S compatible, and DSP serial port modes TDM interface mode supports 8 in/8 out using a single SHARC(R) SPORT 52-lead MQFP (PQFP) plastic package Home theater systems Automotive audio systems DVD recorders Set-top boxes Digital audio effects processors PRODUCT OVERVIEW The AD1836A is a high performance, single-chip codec that provides three stereo DACs and two stereo ADCs using ADI's patented multibit - architecture. An SPI(R) port is included, allowing a microcontroller to adjust volume and many other parameters. The AD1836A operates from a 5 V supply, with provision for a separate output supply to interface with low voltage external circuitry. The AD1836A is available in a 52-lead MQFP (PQFP) package. FUNCTIONAL BLOCK DIAGRAM CCLK DLRCLK DBCLK DSDATA1 DSDATA2 DSDATA3 CDATA CLATCH COUT MCLK CONTROL PORT CLOCK SERIAL DATA I/O PORT ALRCLK ABCLK ASDATA1 ASDATA2 VOLUME VOLUME ADC1L - ADC1L 48kHz/96kHz DIGITAL FILTER 48kHz/96kHz ADC1R - ADC1R 48kHz/96kHz DIGITAL FILTER 48kHz/96kHz VOLUME VOLUME VOLUME ADC2L1 ADC2L2 MUX CAPL1 PGA - ADC2L 48kHz VOLUME DIGITAL FILTER 48kHz DIGITAL FILTER - DAC DIGITAL FILTER - DAC DIGITAL FILTER - DAC MUX ADC2R1 DAC1R DAC2L DAC2R DAC3L DAC3R FILTD CAPL2 CAPR1 ADC2R2 DAC1L PGA - ADC2R 48kHz DIGITAL FILTER 48kHz VREF FILTR CAPR2 PD/RST 2 4 3 2 AVDD AGND DVDD DGND Figure 1. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 (c) 2003 Analog Devices, Inc. All rights reserved. AD1836A AD1836A C1 1nF CAP1L GAIN SELECT POWER-DOWN - VREF MUX LEFT INPUT NO. 1 250 + ADC2L LEFT INPUT NO. 2 250 - VREF + PGA CAP2L C2 1nF INPUT SELECT NOTE ADC2 SINGLE-ENDED MUX PGA INPUT MODE--LEFT CHANNEL ONLY SHOWN. CONTROL REGISTER 3 CONTENTS: 6 LSBs: SELECT INPUT NO. 1: 11 1010 SELECT INPUT NO. 2: 11 1111 Figure 13. Single-Ended MUX/PGA Mode AD1836A C1 1nF CAP1L LEFT + VE INPUT - 250 + VREF ADC2L + 250 - LEFT - VE INPUT GAIN SELECT PGA POWER-DOWN CAP2L C2 1nF NOTE ADC2 DIFFERENTIAL PGA INPUT MODE--LEFT CHANNEL ONLY SHOWN. CONTROL REGISTER 3 CONTENTS: 6 LSBs: 00 1010 Figure 14. Differential PGA Mode Rev. 0 | Page 22 of 24 AD1836A OUTLINE DIMENSIONS 1.03 0.88 0.73 13.45 13.20 SQ 12.95 2.45 MAX 27 39 26 40 SEATING PLANE 7.80 REF 10.20 10.00 SQ 9.80 TOP VIEW (PINS DOWN) VIEW A PIN 1 52 14 1 0.23 0.11 13 0.65 BSC 2.20 2.00 1.80 0.40 0.22 7 0 VIEW A 0.13 MIN COPLANARITY ROTATED 90 CCW COMPLIANT TO JEDEC STANDARDS M-022-AC Figure 15. 52-Lead Plastic Quad Flat Package [MQFP] (S-52A) Dimensions shown in millimeters ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. ORDERING GUIDE AD1836A Products AD1836AAS AD1836AASRL AD1836ACS AD1836ACSRL EVAL-AD1836AEB Temperature Package -40C to +85C Ambient -40C to +85C Ambient -40C to +85C Ambient -40C to +85C Ambient Package Description 52-Lead MQFP 52-Lead MQFP 52-Lead MQFP 52-Lead MQFP Evaluation Board Rev. 0 | Page 23 of 24 Package Option S-52A S-52A on 13" Reels S-52A S-52A on 13" Reels AD1836A NOTES (c) 2003 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C03800-0-8/03(0) Rev. 0 | Page 24 of 24