UPC2533 Datasheet - NEC

UPC2533 - AM TUNER FOR ELECTRONIC TUNING CAR RADIOS

Names and symbols in parentheses indicate pin names for µPC2533GS-02. parentheses are pin names used in both the µPC2533GS-01 and µPC2533GS-02. (1/7) Pin No. 1 Symbol OSC1 Buff Name OSC1 Buff output Equivalent Circuit Names and symbols not in VCC ZO = 30 Ω ±20 % 1 2 ALC OSC1 ALC VCC 2 3 4 .

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, AGC circuit, signal meter circuit, SD (station detector) circuit, and Lo/DX (sh.

UPC2533 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

* H

UPC2533_NEC.pdf