MC44C404 Datasheet, PDF (1/11 Pages) Freescale Semiconductor, Inc – Stereo Encoder

Freescale Semiconductor
Advance Information
NICAM 728 - Stereo Encoder
The MC44C404 NICAM Stereo Encoder is the industry’s first single-chip
CMOS implementation of a Near Instantaneous Companding Audio Multiplex
728 (NICAM) stereo encoder.
• Intended for use in set-top boxes, VCRs, DVD players/recorders, game
stations, and other applications that are required to output high-quality stereo
sound through a single RF coaxial cable.
• Engineered to process analog audio signals to generate a QPSK modulated
signal in compliance with the EN 300 163 standard.
• Designed to output this signal to a Freescale RF modulator, which in turn
produces a stereo encoded RF channel for use with any NICAM stereo
television receiver.
Features
• Supports B, G, H, I, K1, L system standards
• NICAM digital audio processing encodes and transports stereo signals
• Integrated A/D converter input and D/A converter output circuitry
• Extended low frequency response (below 25 Hz)
• Simple passive interface to MC44BS373/4 UHF modulators
• Low power consumption - typically < 50 mW
• RoHS compliant
Benefits
• Preservation of original surround sound fidelity
• Multi standard
• Low system component count, small board size and significantly low overall
system cost
• No manual alignment of filters or phase controls
Reference Documentation
NICAM 728: Transmission of two-channel digital sound with terrestrial
television systems B, G, H, I, K1 and L. (EN 300 163 V1.2.1)
Document Number: MC44C404
Rev. 0.3, 11/2007
MC44C404
NICAM STEREO ENCODER
EP SUFFIX
32-LEAD TQFN PACKAGE
CASE 1457-01
ORDERING INFORMATION
Device
Temp.
Range
Package RoHS
MC44C404EP 0°C to 32TQFN Yes
+70°C
MC44C404EPR2 Tape & Reel
Yes
AUDIO
A - CHANNEL
AUDIO
B - CHANNEL
MC44C404
Σ∆ADC
Σ∆ADC
NICAM
DIGITAL
AUDIO
PROCESSOR
DAC
QPSK
AUDIO
XTAL
CLOCK
GENERATOR
Functional Block Diagram
CLOCK
OUT
NC
VINB
VAGO
VREFP
VREFM
VAGO
ADCV_DD
ADCV_SS
MC44C404
DV_SS
NC
CLK4MHZ
DV_DD
SYS_I
DV_SS
DV_SS
NC
MC44C404 32TQFN Package
This document contains information on a preproduction product. Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2007. All rights reserved.