UPC2533 Overview
DATA SHEET BIPOLAR ANALOG INTEGRATED CIRCUIT µPC2533 AM TUNER FOR ELECTRONIC TUNING CAR RADIOS The µPC2533 is an IC developed as an AM tuner for car stereos and car radios. It employs an up-conversion type double super-heterodyne configuration (IF1 = 10.71 MHz, IF2 = 450 kHz). The internal configuration consists of the MIX1 block (MIX1, OSC1, Buff1), MIX2 block (MIX2, OSC2, Buff2), IF amplifier, detection circuit,...
UPC2533 Key Features
- Possible to select stations using only one varactor diode with narrow variable capacitance range
- Tracking adjustment unnecessary
- Coil switching between LW (long wave) and MW (middle wave) unnecessary
- Less sensitivity deviation due to tracking error
- High S/N: 60 dB
- Signal meter output with good linearity
- Signal meter output voltage inclination setting possible by external resistor
- Can be used with IF (intermediate frequency) counter turning system or high/low tuning system
- LO/DX function on-chip
- Since IFT (intermediate frequency transformer) turn ratio is free from limitation for matching of ceramic filter impedan