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. It features keyed automatic gain control (a.g.c.), regulated reference voltage, buffered oscillator output, electronic standby switch, and internal buffered mixer driving.
The TDA1574 is a monolithic FM tuner circuit intended for car radios and home receivers. It integrates a mixer, oscillator, linear IF amplifier, and keyed AGC, providing a compact solution for FM front‑end design.
The datasheet details electrical parameters, package dimensions, thermal limits, and recommended soldering methods, allowing designers to evaluate performance and integrate the device into their circuits.
| Supply voltage (pin 15) | 7 V – 16 V |
|---|---|
| Supply current (except mixer) | 23 mA (typical) |
| Noise figure (typical) | 9 dB |
| Total harmonic distortion (THD) | -15 dB |
| Storage temperature range | -55 °C to +150 °C |
The device operates with a supply voltage between 7 V and 16 V (typical).
The maximum storage temperature is +150 °C.
The typical noise figure is 9 dB.