TDA884X/5X-N2 series - Device Specification - Integrated Circuits - I2C-bus controlled PAL/NTSC/SECAM TV processors

Oct 12, 2026

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Integrated circuits device specification for the TDA884X/5X-N2 series of I2C-bus controlled single-chip TV processors supporting PAL, NTSC, PAL/NTSC and SECAM receiver applications. Describes system features such as multi-standard vision IF demodulation, alignment-free IF PLL with internal VCO, FM sound demodulation, audio switching, source selection, chrominance trapping, luminance delay, and color/geometry control. Includes a survey of IC types and tables detailing functional differences across versions, plus quick reference electrical data.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages68

Reading Time2 h 51 min

AccessFree to download

Features

General Description

Survey of IC Types

TV receiver category and PAL/NTSC/SECAM variants

Functional Differences Between IC Versions

Quick Reference Data

INTEGRATED CIRCUITS DEVICE SPECIFICATION TDA884X/5X-N2 series I2 C-bus controlled PAL/NTSC/SECAM TV processors Tentative Device Speciﬁcation December 16, 1997 Previous version: April 24, 1997 Philips Semiconductors I2C-bus controlled PAL/NTSC/SECAM TV processors TDA884X/5X-N2 series FEATURES The following features are available in all IC’s: • Multi-standard vision IF circuit with an alignment-free PLL demodulator without external components • Alignment-free multi-standard FM sound demodulator (4 .5 MHz to 6.5 MHz) • Audio switch • Flexible source selection with CVBS switch and Y(CVBS)/C input so that a comb filter can be applied • Integrated chrominance trap circuit • Integrated luminance delay line • Asymmetrical peaking in the luminance channel with a (defeatable) noise coring function • Black stretching of non-standard CVBS or luminance signals • Integrated chroma band-pass filter with switchable centre frequency • Dynamic skin tone control circuit • Blue stretch circuit which offsets colours near white towards blue • RGB control circuit with “Continuous Cathode Calibration” and white point adjustment • Possibility to insert a “blue back” option when no video signal is available • Horizontal synchronization with two control loops and alignment-free horizontal oscillator • Vertical count-down circuit • Vertical driver optimised for DC-coupled vertical output stages • I2C-bus control of various functions The detailed differences between the various IC’s are given in the table on page 3. GENERAL DESCRIPTION The various versions of the TDA 884X/5X series are I2C-bus controlled single chip TV processors which are intended to be applied in PAL, NTSC, PAL/NTSC and multi-standard television receivers. The N2 version is pin and application compatible with the N1 version, however, a new feature has been added which makes the N2 more attractive. The IF PLL demodulator has been replaced by an alignment-free IF PLL demodulator with internal VCO (no tuned circuit required) . The setting of the various frequencies (33 .4, 33.9, 38, 38.9, 45,75 and 58.75 MHz) can be made via the I2C-bus. Because of this difference the N2 version is compatible with the N1, however, N1 devices cannot be used in an optimised N2 application. Functionally the IC series is split up is 3 categories, viz: • Versions intended to be used in economy TV receivers with all basic functions (envelope: S-DIP 56 and QFP 64) • Versions with additional features like E-W geometry control, H-V zoom function and YUV interface which are intended for TV receivers with 110° picture tubes (envelope: S-DIP 56) • Versions which have in addition a second RGB input with saturation control and a second CVBS output (envelope: QFP 64) The various type numbers are given in the table below. SURVEY OF IC TYPES | ENVELOPE | S-DIP 56 | | QFP 64 | | | --- | --- | --- | --- | --- | | TV receiver category | Economy | Mid/High end | Economy | Mid/High end | | PAL only | TDA 8840 | | TDA 8840H | | | PAL/NTSC | TDA 8841 | TDA 8843 | TDA 8841H | | | PAL/SECAM/NTSC | TDA 8842 | TDA 8844 | TDA 8842H | TDA 8854H | | NTSC only | TDA 8846/46A | TDA 8847 | | TDA 8857H | December 16, 1997 2 I2C-bus controlled PAL/NTSC/SECAM TV processors TDA884X/5X-N2 series FUNCTIONAL DIFFERENCES BETWEEN THE VARIOUS IC VERSIONS | IC VERSION (TDA) | 8840 | 8841 | 8842 | 8846 | 8846A | 8843 | 8844 | 8847 | 8854H | 8857H | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Automatic Volume Limiting | X | X | X | X | X | | | | | | | PAL decoder | X | X | X | | | X | X | | X | | | SECAM decoder | | | X | | | | X | | X | | | NTSC decoder | | X | X | X | X | X | X | X | X | X | | Colour matrix PAL/NTSC(Japan) | | X | X | | | X | X | | X | | | Colour matrix NTSC Japan/USA | | | | X | X | | | X | | X | | YUV interface | | | | X | X | X | X | X | X | X | | Base-band delay line for PAL and SEC

FAQs

What communication control interface is used to configure the TDA884X/5X-N2 series TV processors?

The series is I2C-bus controlled, allowing frequency settings and various function control via the I2C-bus.

What makes the N2 version different from the N1 version?

The N2 version replaces the IF PLL demodulator with an alignment-free IF PLL demodulator with an internal VCO, enabling configurable frequencies via the I2C-bus.

How do the different TDA884X/5X versions differ functionally?

They are split into categories such as economy receivers with basic functions, versions with additional geometry/zoom/YUV features for 110° picture tubes, and versions with an extra RGB input and additional CVBS output; the exact differences are listed in the functional differences table.

Oct 12, 2026

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