TDA7088T FM Receiver Circuit for Battery Supply

6,016 views

The TDA7088T is a bipolar integrated circuit for use in mono portable and pocket radios. It is used when a minimum of peripheral components (of small dimensions and low costs) is important. The circuit contains a frequency-locked-loop (FLL) system with an Intermediate Frequency (IF) of about 70 kHz. Selectivity is achieved by active RC-filters. De-tuning related to the IF and too weak input signals is suppressed by the mute circuit.

TDA7088 Pinout

TDA7088 Pin Configuration

Pin NoPin NameDescription
1MUTEMute Output
2VoAFAudio Frequency Output Signal
3LOOPAF Loop Filter
4VPSupply Voltage
5OSCOscillator Resonant Circuit
6IFFBIF Feedback
7CLP1Low-Pass Capacitor 1
8VoIFIF Output to External Coupling Capacitor (high-pass)
9ViIFIF input to limiter amplifier
10CLP2Low-Pass Capacitor Of IF Limiter Amplifier
11ViRFRadio Frequency Input
12ViRFRadio Frequency Input
13CLIMLimiter Offset Voltage Capacitor
14GNDGround
15CAPAll-Pass Filter Capacitor
16TUNEElectrical Tuning/AFC Output

TDA7088 Key Features

  • Equipped with all stages of a mono receiver from antenna to audio output
  • Mute circuit
  • Search tuning with a single varicap diode
  • Mechanical tuning with integrating AFC
  • AM application supported
  • Power supply polarity protection
  • Power supply voltage down to 1.8 V.

Application

  • Mechanical tuning; this is possible with or without integrating AFC circuit
  • Electrical tuning; this is realized by one directional (band-up) search tuning facility, including RESET to the lower-band limit.

You can download this datasheet for TDA7088 FM Receiver Circuit for Battery Supply from the link given below: