The TEA0676T is a monolithic bipolar integrated circuit intended for applications in car radios. It includes head and equalization amplifiers with electronically switchable time constants. Furthermore it includes electronically switchable inputs for tape drivers with reverse heads.
The Philips TEA0676T is a monolithic bipolar integrated circuit intended for use in car radios. It functions as a dual head pre-amplifier and equalizer with electronically switchable time constants (70 µs/120 µs) to accommodate different tape deck configurations.
The device supports reverse head switching via pin 10, allowing it to interface with tape drivers that have reverse heads. It operates with power supplies ranging from 7.6 V to 12.0 V and includes features such as improved EMC behavior and an output overload level comparable to the Dolby standard of 387.5 mV.
| Supply voltage range | 7.6 to 12.0 V |
|---|---|
| Output overload level (0 dB) | 387.5 mV RMS |
| Signal-to-noise ratio (unweighted) | 67 dB to 73 dB |
| Pre-amplifier gain | 30 dB |
| Equalizer minimum gain | 24.5 dB at 1 kHz |
| Operating ambient temperature | -40 to +85 °C |
It is a monolithic bipolar integrated circuit intended for applications in car radios.
Yes, it includes electronically switchable inputs for tape drivers with reverse heads.
Head switching is achieved when pin 10 (HSW) is connected to ground via a 27 kΩ resistor or left open-circuit.