TB2912HQ Toshiba, TB2912HQ Datasheet - Page 4

• Manufacturer Part Number: TB2912HQ
• Manufacturer: Toshiba

Specifications of TB2912HQ

• No. Of Channels: 4
• Package: HZIP 25-P-1.00F
• Recommended Vcc (v): 13.2
• Rl=2 Ohm: 70W x 4
• Rl=4 Ohm: 43W x 4
• Rl=8 Ohm: -
• Features/built-in Functions: 4 BTL channels, standby switch, mute, BiCD process, I2C self-diagnosis, tweeter diagnostics, low standby current
• Operating Voltage (v): 9 to 18

Output AC
waveform
Internal detection
circuit
Clip Det. 5 V
output
GND
Waveform L.P.F
output
3. Clip Detection
Figure 3. In the case when the output waveform is clipping, the clip detection circuit is operated and the
NPN Tr. is turned on.
through a low pass filter (L.P.F) smoothing circuit as shown in Figure 3.
The output clip detection terminal, pin 4, has an open collector output structure on chip as shown in
It is possible to improve the audio output quality by controlling the volume and/or tone control circuits
The sensitivity of the circuit to clipping level can be selected T.H.D. = 1% or 10% via I
In the event that this function is not used, pin4 should be left open circuit.
Clip detector
Figure 3 Clip Detection
4
4
smoothing
L.P.F.
circuit
Volume control circuit
Tone control circuit
2
C bus.
TB2912HQ
2006-04-28