DESCRIPTION
The TDA5632 and TDA5633 are monolithic integrated circuits that perform VHF and UHF mixer/oscillator functions in TV and VCR cable tuners. With correct oscillator application and by using a switchable inductor to
split the VHF band into two sub-bands, the full VHF/UHF TV bands can be covered. These low-power mixers/oscillators require a power supply of 9 V and are available in a very small package.

FEATURES
• Balanced mixer with a common emitter input for band A
• 2-pin oscillator for band A
• Balanced mixer with a common base input for band C
• 4-pin oscillator for band C
• Local oscillator buffer output for external prescaler
• SAW filter preamplifier with a low output impedance to drive a 75 Ω load
• Band gap voltage stabilizer for oscillator stability
• Electronic band switch
• External IF filter connected between the mixer output and the IF amplifier input.

APPLICATIONS
• Cable tuners for TV and VTR; switched concept for VHF
• Recommended RF bands for Europe:
   48.25 to 105.25 MHz, 112.25 to 294.25 MHz and  471.25 to 855.25 MHz
• Recommended RF bands for the USA:
55.25 to 133.25 MHz, 139.25 to 361.25 MHz and 367.25 to 801.25 MHz.