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TUA6030 Datasheet(PDF) 8 Page - Infineon Technologies AG |
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TUA6030 Datasheet(HTML) 8 Page - Infineon Technologies AG |
8 / 49 page Product Description 2 - 8 TUA6030, TUA6032 Wireless Components Specification, July 2001 2.1 Overview The TUA6030, TUA6032 devices combine a mixer-oscillator block with a digi- tally programmable phase locked loop (PLL) for use in TV and VCR tuners. The mixer-oscillator block includes three balanced mixers (one mixer with an unbalanced high-impedance input and two mixers with a balanced low-imped- ance input), two 2-pin asymmetrical oscillators for the LOW and the MID band, one 4-pin symmetrical oscillator for the HIGH band, an IF amplifier, a reference voltage, and a band switch. The PLL block with four independently selectable chip addresses forms a digit- ally programmable phase locked loop. With a 4 MHz quartz crystal, the PLL per- mits precise setting of the frequency of the tuner oscillator up to 1024 MHz in increments of 31.25, 50, 62.5 or 166.7 kHz. The tuning process is controlled by a microprocessor via an I2C bus. The device has 8 output ports, one of them (P6) can also be used as ADC input port. A flag is set when the loop is locked. The lock flag can be read by the processor via the I2C bus. 2.2 Features General s Suitable for PAL/NTSC and Digital Video Broadcasting s Wideband AGC detector for internal tuner AGC − 5 programmable take-over points − 2 programmable time constants s Full ESD protection Mixer/Oscillator s High impedance mixer input (common emitter) for LOW band s Low impedance mixer input (common base) for MID band s Low impedance mixer input (common base) for HIGH band s 2 pin oscillator for LOW band s 2 pin oscillator for MID band s 4 pin oscillator for HIGH band IF-Amplifier s IF preamplifier with symmetrical 75 Ω output impedance able to drive a SAW filter (500 Ω//40 pF) PLL s 4 independent I2C addresses s I2C bus protocol compatible with 3.3 V and 5V micro-controllers up to 400 kHz |
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