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
• 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.


Pinout




Specifications

Item	Symbol	Rating	Unit
Power supply voltage	VCC	10	V
Power dissipation	PD	600	mW
Operating ambient temperature	TA	40 to +85	°C
Storage temperature	Tstg	55 to +125	°C

Caution Exposure to Absolute Maximum Ratings for extended periods may affect device reliability; exceeding the ratings could cause permanent damage. The parameters apply independently. The device should be operated within the limits specified under DC and AC Characteristics.


Description

The PC2533 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 (short range/long range) circuit.