Infineon Technologies TUA 6020

Overview

TUA6020 from Infineon Technologies is a 5 V integrated TV tuner IC combining a digitally programmable PLL, dual-band mixer-oscillator (LOW/MID and HIGH), balanced IF amplifier, and I²C interface. It supports analog/digital terrestrial TV reception with 31.25–166.7 kHz frequency step resolution, ≤10 µs PLL lock time, and low-noise SAW preamplification for PAL tuners in TVs, VCRs, and set-top boxes.

For engineers reviewing the TUA6020 datasheet, TUA6020 pinout, TUA6020 application, or TUA6020 equivalent, key selection criteria include VHF/UHF band switching capability, I²C-programmable reference divider ratios (24/64/80/128), high-voltage VCO tuning output, ESD-protected mixer inputs, and balanced IF output impedance matching to SAW filters.

Technical Context

The TUA6020 implements a fully integrated PLL synthesizer with four selectable I²C addresses and a 4 MHz crystal reference, enabling precise oscillator frequency synthesis up to 1024 MHz. Its dual-mixer architecture features high-impedance input for LOW/MID band (45–300 MHz) and low-impedance balanced input for HIGH band (300–900 MHz), each paired with dedicated 4-pin oscillators.

The IF amplifier delivers balanced, low-output-impedance (50 Ω) differential drive optimized for SAW filter interfacing, while internal NPN bandswitch buffers and an automatic LOW-MID/HIGH switch enable seamless channel tuning without external relays or switches.

Key Specifications

Pinout & Package

Package: P-TSSOP-28-1 (28-pin thin shrink small outline package, 0.65 mm pitch, exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TV tuner front-end applications.

Compared with TDA8260 and BU2508KV, the TUA6020 provides integrated bandswitching, differential IF output, and full I²C configurability-reducing PCB area by ~35% and enabling faster channel switching in microprocessor-based multi-standard receivers.

Availability

TUA6020 is available at Aetrix Electronics and suitable for PAL TV tuners, DVB-T set-top boxes, VCR tuner modules, and multi-standard broadcast receivers requiring stable component supply and long-lifecycle support.

Supply support for TUA6020 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive, and wireless solutions, with global manufacturing and quality certification (CECC-approved).

The TUA6020 belongs to Infineon's Wireless Components product line, designed specifically for high-integration analog/digital TV tuner front-ends requiring low phase noise, fast PLL lock, and robust ESD performance in consumer broadcast equipment.

FAQ

What is the maximum operating frequency of the TUA6020's VCO?

The TUA6020's PLL synthesizer supports VCO frequencies up to 1024 MHz, covering the full UHF terrestrial TV band (470–862 MHz) and extending into L-band for satellite-adjacent applications. This is achieved using a 4 MHz crystal reference and programmable reference dividers, with tuning voltage (VTUNE) output rated up to 30 V for wide varactor range control.

Does the TUA6020 require external matching networks for its RF inputs?

No - the TUA6020 integrates band-specific input impedance optimization: a high-impedance input for LOW/MID band (45–300 MHz) and a low-impedance balanced input for HIGH band (300–900 MHz). These are designed to interface directly with standard TV antenna circuits and diplexer outputs without discrete matching components.

How is the band-switching function implemented internally?

The TUA6020 uses three integrated NPN transistors as bandswitch buffers, controlled by internal logic that automatically selects LOW/MID or HIGH band based on the programmed frequency target. This eliminates external relay drivers or GPIO-controlled switches, reducing layout complexity and ensuring synchronized RF/LO path switching.

Can the TUA6020 be used in digital-only (DVB-T/DVB-C) systems without analog TV support?

Yes - the TUA6020's low-phase-noise PLL, balanced IF output, and wide tuning range make it suitable for DVB-T and DVB-C front-ends. Its IF amplifier maintains >50 dB gain flatness across 36–44 MHz, matching common DVB-T IF bandwidths, and its ESD-hardened inputs ensure reliability in unshielded consumer enclosures.