NXP Semiconductors TDA9881TS/V5,118

Overview

TDA9881TS/V5,118 from NXP Semiconductors (formerly Philips Semiconductors) is an alignment-free multistandard PLL demodulator IC for negative-modulated TV IF signals, supporting PAL and NTSC standards with integrated vision IF amplification, true synchronous video demodulation, and FM sound demodulation. It operates at 5 V supply, delivers 2 V_p-p CVBS output, supports selectable VIF frequencies (38.0/38.9/45.75/58.75 MHz), and integrates QSS/intercarrier sound processing for TV and STB applications.

For engineers reviewing the TDA9881TS/V5,118 datasheet, TDA9881TS/V5,118 pinout, TDA9881TS/V5,118 application, or TDA9881TS/V5,118 equivalent, this page provides verified functional identity, SSOP24 package mapping, 24-pin terminal roles, VIF/FM carrier selection logic, AGC/AFC performance metrics, and validated alternatives for legacy analog TV signal processing designs.

Technical Context

The TDA9881TS/V5,118 implements dual PLL architecture: a vision IF PLL with fully integrated VCO (operating at 2× picture carrier frequency, up to 140 MHz) and digital acquisition help circuitry for lock-in window control across four standard-specific VIF frequencies; and a narrow-band FM PLL demodulator with 100 kHz bandwidth, internal relaxation oscillator (4–7 MHz), and AFC current output via 4-bit DAC.

It features AC-coupled differential VIF/SIF amplifiers (66 dB gain control range, 2 kΩ || 3 pF input impedance), synchronous multiplier-based video demodulation, integrated 4.5–6.5 MHz sound carrier traps with phase-locked reference filtering, and logic-controlled mode selection via pins VIF0, QSSO, FM0, FM1, and AMUTE0 for standard adaptation without external alignment.

Key Specifications

Pinout & Package

Package: SSOP24 (SOT340-1), plastic shrink small outline, 24 leads, body width 5.3 mm, rated for −20 °C to +70 °C ambient operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar vision and FM sound IF demodulator applications.

Compared with TDA9881TS/V5,118, the TDA9886HN provides broader frequency coverage and higher thermal tolerance, while the LA76818 sacrifices multistandard flexibility for integration simplicity - making TDA9881TS/V5,118 the optimal choice for field-upgradable analog TV systems requiring PAL/NTSC interoperability.

Availability

TDA9881TS/V5,118 is available at Aetrix Electronics and suitable for TV broadcast receivers, Set-Top Boxes, VCR video processing, and PC TV tuner cards requiring stable component supply for legacy analog signal chain continuity.

Supply support for TDA9881TS/V5,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors acquired Philips Semiconductors in 2006 and continues to support legacy analog video ICs with long-term product stewardship and documentation archives.

The TDA9881TS/V5,118 belongs to NXP's legacy TV signal processing portfolio, designed specifically for alignment-free, multistandard analog TV IF demodulation in cost-sensitive consumer electronics.

FAQ

What is the primary function of the TDA9881TS/V5,118 in analog TV systems?

The TDA9881TS/V5,118 serves as a fully integrated vision and FM sound IF PLL demodulator for negative-modulated TV signals. It performs synchronous video demodulation with active carrier regeneration, processes QSS or intercarrier sound, and integrates VIF/SIF amplification, AGC, AFC, and sound carrier trapping - all without manual alignment. Its design enables direct replacement of discrete demodulator stages in PAL/NTSC TV, STB, and VCR applications.

How does the TDA9881TS/V5,118 support multiple TV standards without hardware changes?

The TDA9881TS/V5,118 supports PAL and NTSC standards through logic-configurable pins: VIF0 and QSSO select vision carrier frequencies (38.0/38.9/45.75/58.75 MHz), while FM0 and FM1 set FM sound carriers (4.5/5.5/6.0/6.5 MHz) and de-emphasis time constants (50/75 µs). No firmware or external components are needed - resistor ties or open/ground states on these pins determine standard compliance at power-on.

What is the role of the digital acquisition help circuit in the TDA9881TS/V5,118?

The digital acquisition help circuit in the TDA9881TS/V5,118 prevents false PLL locking by verifying that the VIF VCO frequency falls within a ±2.3 MHz window around the target carrier before enabling phase-lock mode. It uses a downcounter gated by the REF input to measure VCO frequency and inject corrective current into the loop filter - ensuring reliable startup across all supported standards without manual tuning.

Can the TDA9881TS/V5,118 operate with an external 4 MHz reference or an onboard crystal?

Yes - pin REF accepts either a 4 MHz external reference signal from a PLL tuning system or a 4 MHz crystal directly. When used with a crystal, the internal oscillator circuit provides stable reference generation without additional components. The datasheet confirms operation as "1-pin crystal oscillator input" with no external load capacitors required, simplifying board layout for cost-sensitive designs.

What are the key video performance metrics guaranteed for the TDA9881TS/V5,118?

The TDA9881TS/V5,118 guarantees differential gain <5% and differential phase <4° per CCIR 330, weighted video SNR ≥55 dB, 2 V_p-p CVBS output with 1.2 V sync level, and −3 dB video bandwidth of 4.05 MHz (at 4.5 MHz trap). These metrics ensure broadcast-grade color fidelity and noise performance in analog TV signal chains, validated under B/G standard conditions at 5 V supply and 25 °C.