TDA9881TS/V2-T NXP Semiconductors, TDA9881TS/V2-T Datasheet

TDA9881TS/V2-T

Manufacturer Part Number

TDA9881TS/V2-T

Description

Modulator / Demodulator IF DEMODULATOR

Manufacturer

NXP Semiconductors

Datasheet

1.TDA9881HNV5118.pdf (42 pages)

Specifications of TDA9881TS/V2-T

Package / Case

SSOP-24

Maximum Operating Temperature

+ 70 C

Maximum Power Dissipation

385 mW

Minimum Operating Temperature

- 20 C

Modulation Type

Quadrature

Mounting Style

SMD/SMT

Operating Supply Voltage

5 V

Supply Current

63 mA

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

TDA9881TS/V2,518

Current page: 1 of 42
Download datasheet (218Kb)

1. General description

2. Features

3. Applications

The TDA9881 is an alignment-free multistandard (PAL and NTSC) vision and sound

IF signal PLL demodulator for negative modulation, including Quasi Split Sound (QSS) or

intercarrier FM processing.

TDA9881

Alignment-free vision and FM sound IF PLL demodulator for

negative modulated TV standards

Rev. 01 — 16 November 2004

5 V supply voltage

Gain controlled wideband Vision Intermediate Frequency (VIF) ampliﬁer; AC-coupled

Multistandard true synchronous demodulation for negative modulated standards with

active carrier regeneration: very linear demodulation, good intermodulation ﬁgures,

reduced harmonics and excellent pulse response

Fully integrated VIF Voltage Controlled Oscillator (VCO), alignment-free, frequencies

switchable via logic pin VIF0 and pin QSSO with resistor

Digital acquisition help circuit, VIF frequencies of 38.0 MHz, 38.9 MHz, 45.75 MHz and

58.75 MHz

4 MHz reference frequency input signal from Phase-Locked Loop (PLL) tuning system

or operating as crystal oscillator

VIF Automatic Gain Control (AGC) detector for gain control; operating as peak sync

detector

VIF AGC monitor output at pin VAGC

Precise fully digital Automatic Frequency Control (AFC) detector with 4-bit

digital-to-analog converter

TakeOver Point (TOP) adjustable with potentiometer

Fully integrated sound carrier trap for 4.5 MHz, 5.5 MHz, 6.0 MHz and 6.5 MHz;

controlled by FM PLL oscillator

Sound IF (SIF) input for single reference Quasi Split Sound (QSS) mode; PLL

controlled

SIF AGC for gain controlled SIF ampliﬁer; single reference QSS mixer able to operate

in high performance single reference QSS mode or in intercarrier mode; switchable via

SIF input pins

Alignment-free selective FM PLL demodulator with high linearity and low noise.

TV, VTR, PC and Set-Top Box (STB) applications.

Product data sheet

Related parts for TDA9881TS/V2-T

TDA9881TS/V2-T Summary of contents

Page 1

TDA9881 Alignment-free vision and FM sound IF PLL demodulator for negative modulated TV standards Rev. 01 — 16 November 2004 1. General description The TDA9881 is an alignment-free multistandard (PAL and NTSC) vision and sound IF signal PLL demodulator for ...

Page 2

Philips Semiconductors 4. Quick reference data Table 1: Quick reference data Symbol Parameter V supply voltage P I supply current P Video part V VIF input voltage sensitivity i(VIF)(rms) (RMS value) G VIF gain control range VIF(cr) f vision carrier ...

Page 3

Philips Semiconductors Table 1: Quick reference data Symbol Parameter PSRR power supply ripple rejection FMSO on pin FMSO V IF intercarrier output level o(intc)(rms) (RMS value) Reference frequency f reference signal frequency ref V reference signal voltage ref(rms) (RMS value) ...

Page 4

TOP TAGC VAGC 9 (8) 14 (15) 22 (24) C AGC TUNER AGC VIF AGC VIF2 2 (31) VIF PLL VIF1 1 (30) SIF2 24 (27) SINGLE REFERENCE QSS MIXER INTERCARRIER MIXER SIF1 23 (26) SUPPLY SIF AGC C AGC ...

Page 5

Philips Semiconductors 7. Pinning information 7.1 Pinning VIF1 1 VIF2 2 3 i.c. FMPLL 4 DEEM 5 6 AFD TDA9881TS 7 DGND FMSO 8 TOP 9 10 FM1 FM0 11 QSSO 12 Fig 2. Pin conﬁguration for SSOP24. 9397 750 ...

Page 6

Philips Semiconductors 7.2 Pin description Table 3: Symbol VIF1 VIF2 n.c. i.c. FMPLL DEEM AFD DGND n.c. FMSO TOP FM1 FM0 QSSO n.c. n.c. VIF0 TAGC REF AMUTE0 16 CVBS n.c. AGND VPLL V P AFC VAGC n.c. SIF1 SIF2 ...

Page 7

Philips Semiconductors 8. Functional description A simpliﬁed block diagram of the device is illustrated in following functional blocks: 1. VIF ampliﬁer 2. Tuner AGC and VIF AGC 3. VIF AGC detector 4. Frequency Phase-Locked Loop (FPLL) detector 5. VCO and ...

Page 8

Philips Semiconductors 8.4 FPLL detector The VIF ampliﬁer output signal is fed to a frequency detector and a phase detector via a limiting ampliﬁer to remove the video AM. During acquisition the frequency detector produces a current that is proportional ...

Page 9

Philips Semiconductors The AFC signal is derived from the corresponding downcounter stop value after a counting cycle. The last four bits are latched and the digital-to-analog converted value is given as current at pin AFC. 8.7 Video demodulator and ampliﬁer ...

Page 10

Philips Semiconductors 8.11 Single reference QSS mixer With the present system high performance Hi-Fi stereo sound processing can be achieved. For a simpliﬁed application without an SIF SAW ﬁlter, the single reference QSS mixer can be switched to the intercarrier ...

Page 11

Philips Semiconductors 8.13 Audio ampliﬁer and mute time constant The audio ampliﬁer consists of two parts: • AF preampliﬁer • AF output ampliﬁer. The AF preampliﬁer used for FM sound is an operational ampliﬁer with internal feedback, high gain and ...

Page 12

Philips Semiconductors Table 5: FM0 Pin open-circuit Pin connected to ground Pin open-circuit Pin connected to ground Table 6: AMUTE0 Pin open-circuit Pin connected to ground Table 7: SIF1 and SIF2 No DC path to ground One or both pins ...

Page 13

Philips Semiconductors 10. Thermal characteristics Table 9: Thermal characteristics Symbol Parameter R thermal resistance from junction to ambient th(j-a) TDA9881TS (SSOP24) TDA9881HN (HVQFN32) 11. Characteristics Table 10: Characteristics see Table 12 P ...