TB2912HQ Toshiba, TB2912HQ Datasheet - Page 13

• 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

Pin10
ripple
voltage
WRITE DATA
Turn On diagnostic
acquisition time (80 ms typ.)
but the result is not latched internally as shown in the Figure below:
and next read is set at Tvos = 1/the lowest signal frequency ,or more. For instance Tvos > 50 ms if the
lowest output signal frequency is 20 Hz, and to obtain 2 or more readings in order not to make a
misjudgment
Regarding operation of the output offset detection, The software always detects the output offset
However, this detection has to be performed in real time: Time voltage offset (Tvos) between read
Additionaly, the threshold level is designed at +/−2 V.
Figure 8 Software Output Offset Detection Timing Chart
Turn On diagnostic
DATA permitted time
FAULT
Permanent diagnostic DATA
permitted time
event
READ DATA
result faulty
13
Correct Tvos
removed
FAULT
result not faulty
READ DATA
Correct Tvos
result not faulty
READ DATA
TB2912HQ
2006-04-28