TUA6045 INFINEON [Infineon Technologies AG], TUA6045 Datasheet - Page 11

• Manufacturer Part Number: TUA6045
• Description: Low Power 3-Band Digital TV / Portable Tuner IC
• Manufacturer: INFINEON [Infineon Technologies AG]

2.1.3
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2.1.4
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2.1.5
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2.1.6
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2.2
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Data Sheet
Symmetrical IF preamplifier with low output impedance able to drive a compensated
SAW filter (500 //40 pF).
Symmetrical variable gain IF output amplifier with low noise, high linearity,
high dynamic range.
4 independent I
I
High voltage VCO tuning output.
3 PNP ports, one of them realized as programmable voltage output.
1 clock output for external DC/DC upconversion to generate the tuning supply
voltage, may be used as NPN port.
Stand-by programmable for functional blocks allows customized ramping.
Internal LOW/MID/HIGH band switch.
Lock-in flag.
4 to 16 MHz crystal oscillator with programmable output buffer.
programmable reference divider ratios.
4 charge pump currents, programmable in 15 steps.
2 programmable switches to bypass the bandpass/SAW filter to facilitate the tuner
pre-stage alignment.
The IC is suitable for PAL, NTSC, SECAM, DVB-T/H/C, DAB, ISDB-T, ATSC and L-
Band tuners.
The integrated RF AGC control has wide band detectors at the mixer inputs and
a narrowband detector at the saw filter driver output.
2
C bus protocol compatible with 3.3 V and 5V micro-controllers up to 400 kHz.
SAW Filter Driver
IF AGC Amplifier
PLL
IF switch and Loop through for tuner alignment
Application
2
C addresses, or 3-Wire bus mode.
11
Revision 3.1, 2006-12-19
Product Description
TUA 6045-2
TAIFUN 3