Single-chip synthesized tuner for dual-band mobile TV applications
Zero-IF single-conversion architecture eliminates need for SAW filters
Covers entire VHF Band III (174 MHz to 245 MHz) and UHF Band IV/Band V (470 MHz to 862 MHz)
Typical AGC dynamic range: ?102 dBm to 0 dBm
Low power consumption
VHF: 180 mW
UHF: 200 mW
On-chip features include
Fast switching fractional-N PLL
Low phase noise and wide frequency range VCO
Bandwidth-adjustable low-pass filter
Integrated baseband VGA for direct connection to digital demodulators
Noise/linearity optimization through internal RFAGC loop
Adjustable take-over point
I 2C serial bus interface
Small 32-lead lead frame chip scale package (LFCSP) ( 5 mm × 5 mm )
Minimal external components |