The TDA1905 is a monolithic integrated circuit designed for use as a low frequency power amplifier in a wide range of applications in radio and TV sets. It features muting functionality, protection against chip over temperature, very low noise, high supply voltage rejection, and low switch-on noise.
The TDA1905 is a monolithic integrated circuit in a POWERDIP package designed for low‑frequency power amplification in radio and TV sets. It offers muting, over‑temperature protection, low noise, and a wide supply voltage range.
The document details absolute maximum ratings, pin connections, thermal data, electrical characteristics, muting function parameters, and example application circuits, along with mechanical dimensions of the POWERDIP package.
| Supply voltage range | 4 V to 30 V |
|---|---|
| Output peak current (non‑repetitive) | 3 A |
| Power dissipation at Tamb = 80 °C | 1 W |
| Thermal resistance junction‑pins | 15 °C/W |
| Quiescent output voltage (Vs=4 V) | typical 2.1 V |
| Open‑loop voltage gain (Vs=14 V) | 75 dB |
The device operates from 4 V up to 30 V supply voltage.
At 24 V supply with a 16 Ω load, the TDA1905 can deliver up to 5.3 W of output power.
The junction‑to‑pins thermal resistance is specified as a maximum of 15 °C/W.