TUA6024-2 Infineon Technologies Corporation, TUA6024-2 Datasheet - Page 6

• Manufacturer Part Number: TUA6024-2
• Description: 2 Band Tv Tuner Mixer-oscillator-pll With Balanced If-amplifier
• Manufacturer: Infineon Technologies Corporation

Wireless Components
2.1 General Description
2.2 Features
The TUA6024-2 device combines a digitally programmable phase locked loop
(PLL), with a mixer-oscillator block including two balanced mixers and oscilla-
tors for use in TV and VCR tuners.
The PLL block with four selectable chip addresses forms a digitally programm-
able phase locked loop. With a 4 MHz quartz crystal, the PLL permits 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 micropro-
cessor via an I
loop is locked. It can be read by the processor via the I
The mixer-oscillator block includes two balanced mixers (one mixer with high-
impedance input and one mixer with a balanced low-impedance input), two fre-
quency and amplitude-stable balanced oscillators for LOW/MID and HIGH, an
IF amplifier, a low-noise reference voltage source, and a band switch.
General
Mixer/Oscillator
IF-Amplifier
PLL
Suitable for analog tuners and for digital CATV tuners
Compatible with TUA6024-S and TUA6024-K in normal mode
New features in extended mode
Full ESD protection
High impedance mixer input for LOW/MID band
Low impedance mixer input for HIGH band
4 pin oscillator for LOW/MID band
4 pin oscillator for HIGH band
balanced SAW preamplifier
Low output impedance
PLL with short lock-in time
High voltage VCO tuning output
Fast I
3 NPN bandswitch buffers
Internal LOW-MID/HIGH switch
2
C bus
2
C bus. The device has three output ports. A flag is set when the
2 - 2
2
C bus.
Product Description
Specification, July 2001
TUA6024-2