TDA1574
Overview
TDA1574 The TDA1574 is a monolithic integrated FM tuner circuit designed for use in the r.f./i.f. section of car radios and home-receivers. The circuit comprises a mixer, oscillator and a linear i.f. amplifier for signal processing, plus the following additional features.
- Keyed automatic gain control (a.g.c.)
- Regulated reference voltage
- Buffered oscillator output
- Electronic standby switch
- Internal buffered mixer driving. QUICK REFERENCE DATA Supply voltage range (pin 15) Mixer input bias voltage (pins 1 and 2) noise figure Oscillator output voltage (pin 6) output admittance at pin 6 for f = 108,7 MHz Oscillator output buffer D.C. output voltage (pin 9) Total harmonic distortion Linear i.f. amplifier output voltage (pin 10) noise figure at RS = 300 Ω Keyed a.g.c. output voltage range (pin 18) V9-4 THD V10-4 NF V18-4 typ. typ. typ. typ. 6V -15 dBC 4,5 V 6,5 dB VP V1, 2-4 NF V6-4 Y22 typ. typ. typ. typ. 7 to 16 V 1V 9 dB 2V 1,5 + j2 mS + 0,5 to VP - 0,3 V
