NXP Semiconductors


Select site:

English

Datasheet

SAA7824
(Product Specification)
01-Oct-03, 89 pages, 378 kB

Download all documentation

CD audio decoder, digital servo and filterless DAC with integrated pre-amp and laser control (PhonIC)

General description
Features
Products/packages
Chemical content
Pricing/ordering/availability
Samples
Applications
Block diagrams/pinning
Design support
Parametrics/similar products
Print/email

General description

This document covers versions M0 and M1 of the CD audio decoder IC.

The SAA7824 is a CD audio decoder IC which combines the function of the SAA732X IC with the pre-amplifier and laser control functions previously found in the TZA102X IC. The design is intended to reduce the external component count and hence the Bill Of Material (BOM).

Supply of this Compact Disc IC does not convey an implied license under any patent right to use this IC in any Compact Disc application.

Features

  • Decoder and servo parts are based upon the SAA732X design (the original features are maintained)
  • Software compatibility is maintained with the SAA732X by using a similar register structure (new features are controlled from new shadow registers)
  • 1x, 2x and 4x speed
  • LF (servo) signals converted to digital representations by 6 oversampling bitstream ADCs
  • HF part summed from signals D1 to D4 and converted into a digital signal by a data slicer
  • On-chip buffering and filtering of the diode signals from the mechanism for signal optimization
  • Selectable DC offset cancellation of quiescent mechanism voltages and dark currents
  • On-chip laser power control (up to 120 mA)
  • Laser on/off control, including ?soft? start control (zero to nominal power in 1 ms)
  • Monitor control and feedback circuit to maintain nominal output power throughout laser life
  • Dynamic element matching DAC with minimum external components
  • DAC performance of -80 dB Total Harmonic Distortion + Noise (THD + N) and 90 dB Signal-to-Noise Ratio (S/N) A-weighted
  • Separate left and right channel digital silence detection available on the KILL pins
  • Digital silence detection on internal data and loopback (external) data
  • 5 versatile pins, 2 inputs and 3 outputs
  • Integrated CD text decoder with separate microcontroller interface
  • Dedicated 4 MHz or 12 MHz clock output for microcontroller (configurable)
  • Configured for N-sub monitor diode
  • On-chip clock multiplier allows the use of an 8.4672 MHz crystal or ceramic resonator
  • The M1 version has an EBU mute function which allows independent muting of data being transmitted over the EBU interface whilst maintaining the SPDIF frame structure.

Products/packages

Type numberNorth American Type numberOrdering code (12NC)Product statusPackagePackingMarkingChemical contentLeadfree conversion date
SAA7824HL/M1A9352 728 61157Volume productionSOT315-1
(LQFP80)
Tray Pack, Bakeable, MultipleStandard MarkingSAA7824HL/M1A
week 12, 2004

Pricing/ordering/availability

Type numberOrdering code(12NC)Indicative price/unit($)RegionDistributorIn stockInventory dateBuy onlineSamples
SAA7824HL/M1A9352 728  61157        Order samples

Block diagrams/pinning

Disclaimer

The information published on product information pages of the www.nxp.com or www.semiconductors.com websites is an extract from product data sheets and is for information purposes only. For detailed information please check the most recent version of the relevant product data sheet as published on these websites. In the event of any conflict between product information pages and data sheets or deviations from information provided in the product data sheets on these product information pages, the information provided in the product data sheets shall prevail.


The product status of the product(s) described in the product data sheet may have changed since publication of the data sheet and therefore information in datasheets on product status may be outdated. The latest information on product status is published on the product information pages of the above-mentioned websites.


As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors, which will be used in future data sheets together with new contact details. In data sheets where the previous Philips references remain, please use the new links as shown below.


http://www.philips.semiconductors.com use http://www.nxp.com
http://www.semiconductors.philips.com use http://www.nxp.com (Internet)
sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com (e-mail)

The copyright notice at the bottom of each page (or elsewhere in the document, depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved -
is replaced with:
- © NXP B.V. (year). All rights reserved.-


If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your cooperation and understanding.