PNX3000 데이터 시트보기 (PDF) - Philips Electronics

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PNX3000

Analog front end for digital video processors

Philips Electronics 

Philips Semiconductors

Analog front end for digital video

processors

Preliminary specification

PNX3000

1 FEATURES

• Multi-standard vision IF circuit with alignment-free PLL

demodulator without external components

• Internal (switchable) time-constant for the IF AGC circuit

• DTV IF circuit for gain control of digital broadcast

TV signals

• Sound IF amplifier with separate AGC circuit for

quasi-split sound

• IF circuit can also be used for intercarrier sound

• Analog demodulator for AM sound

• Integrated sound trap and group delay correction

• Video ident function detects the presence of a video

signal

• Video source selector with four external CVBS or YC

inputs and two analog CVBS outputs with independent

source selection for each output

• Two linear inputs for 1fH or 2fH RGB signals with source

selector; the RGB signals are converted to YUV before

A to D conversion; both inputs can also be used as

YPbPr input for DVD or set top box

• Integrated anti-alias filters for video Analog to Digital

Converters (ADCs)

• Four 10-bit video ADCs for the conversion of CVBS, YC,

YUV and down-mixed sound IF signals

• Up to three different A to D converted video channels

are available simultaneously (e.g. CVBS, YC and YUV)

• Audio source selector with five stereo inputs for analog

audio and two microphone inputs

• Two microphone amplifiers with adjustable gain

• Three analog audio outputs for SCART and line out with

independent source selection for each output

• Four 1-bit audio sigma delta ADCs for the conversion of

audio and microphone signals

• Three serial data link transmitters for interfacing with the

digital video processor at a bit rate of 594 Mbit/s per data

link

• Voltage to current converter for driving external

east-west power amplifier

• I2C-bus transceiver with selectable slave address and

maskable interrupt output.

2 GENERAL DESCRIPTION

The PNX3000 is an analog front end for digital video

processors. It contains an IF circuit for both analog and

digital broadcast signals, input selectors and ADCs for

analog video and audio signals. The digital output signals

are made available via three serial data links.

The IC has a supply voltage of 5 V. The supply voltage of

the analog audio part can be 5 V or 8 V, depending on the

maximum signal amplitudes that are required.

3 ORDERING INFORMATION

TYPE NUMBER

PNX3000HL/N3

NAME

LQFP128

PACKAGE

DESCRIPTION

plastic low profile quad flat package; 128 leads; body 14 × 20 × 1.4 mm

VERSION

SOT425-1

2004 Oct 04

3

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