TDA7361

www.DataSheet4U.com TDA7361 LOW VOLTAGE NBFM IF SYSTEM . . . . . OPERATION FROM 1.8V TO 9V LOW DRAIN CURRENT (4mA, Vs = 4V) HIGH SENSITIVITY (-3dB input limiting at 3µV) 8µV INPUT FOR 20dB S/N LOW EXTERNAL FAIR COUNT DIP16 ORDERING NUMBER : TDA7361 DESCRIPTION The TDA7361 is a low-power narrow band FM IF demodulation system operable to less than 2 V supply voltage. The device includes Oscillator, Mixer, Limiting DataSheet4U.com Amplifier, Quadrature Discriminator, Op. Amp. Squelch, Scan Control and Mute Switch. SO16 The TDA7361 is designed for use in NBFM dual ORDERING NUMBER : TDA7361D conversion communication equipments using a 455 KHz ceramic filter like cordless telephones, walkie-talkies, scan receivers, etc. PIN CONNECTION DataShee DataSheet4U.com June1993 1/8 DataSheet4U.com DataSheet 4 U .com www.DataSheet4U.com TDA7361 Pin FUNCTION No 1-2 Name XTAL OSCILLATOR Function Connections for the Colpitts XTAL Oscillator. The XTAL may be replaced by an inductor (see Figure 5) if the application does not require high stability. The Mixer is double balanced to reduce spurious products. The output impedance is 1.8kW to match the input impedance of a 455kHz ceramic filter. Must be well decoupled with a 100nF ceramic capacitor. Input pin of the six stages amplifier with about 50 µV limiting sensitivity and 1.8kΩ input impedance. The if output is connected to the external quadrature coil (Pin 8) via an internal 10pF capacitor. Good quality 100nF ceramic capacitors and a su...