βTDA1083

The βTDA1083 is an AM-FM radio system integrated circuit made by IPRS Băneasa [1].

The I.P.R.S. Băneasa Full Line Condensed Catalog (1990) lists the βTDA1083, marked as preliminary data, as an integrated circuit that performs all the radio functions except the VHF tuning, well suited for low-cost applications that need a minimum parts count and high performance; in the AM mode the device is a complete single conversion superheterodyne broadcast or shortwave receiver, including AGC and envelope peak detection, and in the FM mode it works as a high-gain IF amplifier/limiter and phase shift detector; the modes are switched with a simple DC switch [1].

The catalog gives an operating temperature of −25…+70 °C (storage −25…+125 °C), a supply voltage of 2…12 V, an input limiting threshold of at most 40 µV, a typical sensitivity of 10 µV, an output distortion of at most 2 % and an AM rejection of at least 40 dB [1]. Pins (MP-117, top view): 1 IF decoupling, 2 IF input, 3 GND, 4 mixer output, 5 oscillator circuit, 6 input, 7 AM decoupling, 8 demodulator output, 9 audio input, 10 audio feedback, 11 audio GND, 12 audio output, 13 Vcc, 14 demodulator circuit, 15 demodulator circuit, 16 AGC/AFC voltage [1].