TV tuner TAEC-G020D.Such a tuner can be found in the LG CF-21D79 TV.The board contains high-frequency transistors, varicaps, ceramic capacitors and other components.
Unknown component,the inscription “NAp” on the case.Four leads, one of them thickened
Unknown component, the inscription “EW-” on the case.Four outputs
Unknown component, the inscription “BF” on the case.
TDA6405ATS.This is a 5-volt mixer/generator-
synthesizer PLL for hyperband tuners.
FEATURES
• Single chip 5 V mixer/oscillator-PLL synthesizer for
hyperband tuners
• I2C-bus protocol
• 3 PNP band switch buffers (25 mA)
• 33 V tuning voltage output
• In-lock detector
• 5-level Analog-to-Digital Converter (ADC)
• 15-bit programmable divider
• Programmable reference divider ratio
(512, 640 or 1024)
• Programmable charge pump current
• Balanced mixer with a common emitter input for VHF
(single input)
• Balanced mixer with a common base input for UHF
(double input)
• 4-pin common emitter oscillator for VHF
• 4-pin common emitter oscillator for UHF
• IF amplifier with a low output impedance to drive a SAW
filter directly (≈2 kΩ load)
• Low power, low radiation, small size
The location of the tuner pins is shown on the board
