These integrated ones consist of class B amplifiers with gain fixed 24 internally for better balance between the channels (less than 1 dB). The two types are virtually identical, except for the gain being presented in a folded 13-pin SIL housing for the DIL format. Among the advantages presented by these integrated ones, we highlight:
- No need for external components in the BTL configuration.
- Low off-set voltage at the output (100 mV), an important factor for the BTL connection.
- Fixed voltage gain (14.4 V at 4 ohms load) of 26 dB for BTL and 20 dB for stereo (TDA151ôQ). The values for the TDA15180 are 46 dB (BTL) and 40 dB (stereo),
- Excellent ripple rejection from the power supply (40 dB between 100 Hz and 10 kHz, Rs = 0 ohm)
- Output protected against short circuit with earth or power line.
- Thermal protection.
- Protection against polarity inversion - Has stand-by input with switching from 0 V to 2 V on pin11, and a switching current of only 12 uA to allow low cost switches. The current in the stand-by condition is less than 100 uA. The voltage on pin 11 for normal operation is greater than 8.1 V.
- It has mute with switching between 3 and 6.4 V on pin 11 to eliminate clicks when on and off. The supply current in the mute condition is 40 mA.
- Same inputs (inverting and non-inverting)
Few external components are required for stereo configuration.
