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TDA6403A Key Features

  • Single-chip 5 V mixer/oscillator and synthesizer for cable TV and VCR tuners
  • Synthesizer function patible with existing TSA5526
  • Universal bus protocol (I2C-bus or 3-wire bus)
  • Bus protocol for 18 or 19-bit transmission (3-wire bus)
  • Extra protocol for 27-bit transmission (test modes and features for 3-wire bus)
  • Address + 4 data bytes transmission (I2C-bus ‘write’ mode)
  • Address + 1 status byte (I2C-bus ‘read’ mode)
  • 4 independent I2C-bus addresses
  • 1 PNP buffer for UHF band selection (25 mA)
  • 3 PNP buffers for general purpose, e.g. 2 VHF sub-bands, FM sound trap (25 mA)

Related NXP Semiconductors Datasheets

Part Number Description
TDA6403 5 V mixers/oscillators and synthesizers for cable TV and VCR 2-band tuners
TDA6402 5 V mixers/oscillators and synthesizers for cable TV and VCR 2-band tuners
TDA6402A 5 V mixers/oscillators and synthesizers for cable TV and VCR 2-band tuners
TDA6404 5 V mixer/oscillator-PLL synthesizers for hyperband tuners
TDA6405 5 V mixer/oscillator-PLL synthesizers for hyperband tuners

TDA6403A Description

The TDA6402, TDA6402A, TDA6403 and TDA6403A are programmable 2-band mixers/oscillators and synthesizers intended for VHF/UHF cable tuners (see Fig.1). The devices include two double balanced mixers and two oscillators for the VHF and UHF band respectively, an IF amplifier and a PLL synthesizer. The VHF band can be split-up into two sub-bands using a proper oscillator application and a switchable inductor.

TDA6403A Applications

  • Cable tuners for TV and VCR (switched concept for VHF)