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TDA5636

Features: · Balanced mixer with a common emitter input for band A (single input)· 2-pin oscillator for bands A and B· Balanced mixer with a common base input for bands B and C (balanced input)· 4-pin oscillator for band C· Local oscillator buffer output for external prescaler· SAW filter preamplif...

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SeekIC No. : 004516449 Detail

TDA5636: Features: · Balanced mixer with a common emitter input for band A (single input)· 2-pin oscillator for bands A and B· Balanced mixer with a common base input for bands B and C (balanced input)· 4-pi...

TDA5636 Data Sheet

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Part Number:
TDA5636
Supply Ability:
5000

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Product Details

Description



Features:

· Balanced mixer with a common emitter input for band A (single input)
· 2-pin oscillator for bands A and B
· Balanced mixer with a common base input for bands B and C (balanced input)
· 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 W load
· Band gap voltage stabilizer for oscillator stability
· Electronic band switch
· External IF filter between the mixer output and the IF amplifier input
· Pin to pin compatible with TDA5636B; TDA5637B family (same function with symmetrical IF output).


Application

· 3-band all-channel TV and VCR tuners
· Any standard.


Pinout

Connection Diagram


Specifications

SYMBOL PARAMETER MIN. MAX. UNIT
VP supply voltage -0.3 +10.5 V
VSW switching voltage 0 10.5 V
IO output current of each pin to ground - -10 mA
tsc(max) maximum short-circuit time (all pins) - 10 s
Tstg IC storage temperature 55 +150 °C
Tamb operating ambient temperature -10 +80 °C
Tj junction temperature - +150 °C



Description

The TDA5636 and TDA5637 are monolithic integrated circuits that perform the mixer/oscillator functions for bands A, B and C in TV and VCR tuners. These low-power mixer/oscillators require a power supply of 9 V and are available in a very small package.

The TDA5636 and TDA5637 give the designer the capability to design an economical and physically small 3-band tuner.

TDA5636 and TDA5637 are suitable for European standards, as illustrated in Fig.17, with the following RF bands:
· 48.25 to 168.25 MHz
· 175.25 to 447.25 MHz
· 455.25 to 855.25 MHz.

With an appropriate tuned circuit, TDA5636 and TDA5637 are also suitable for NTSC all-channel tuners (USA and Japan). The tuner development time can be drastically reduced by using these devices.

These circuits of TDA5636 and TDA5637 belong to the TDA5636B/TDA5637B family which has exactly the same function with an IF amplifier having a symmetrical IF output to drive a SAW filter directly. It is possible to build tuners with either an asymmetrical or a symmetrical IF output with one main tuner lay-out.




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