TB2926HQ Toshiba, TB2926HQ Datasheet - Page 4

• Manufacturer Part Number: TB2926HQ
• Manufacturer: Toshiba

Specifications of TB2926HQ

• No. Of Channels: 4
• Package: HZIP 25-P-1.00F
• Recommended Vcc (v): 13.2
• Rl=2 Ohm: Not Supported
• Rl=4 Ohm: 43W x 4
• Rl=8 Ohm: -
• Features/built-in Functions: 4 BTL channels, standby switch, mute, low-RON BiCD process, DC offset detection
• Operating Voltage (v): 9 to 18

2. Mute Function
The audio mute function is enabled by setting pin 22 Low. R
mute function. The time constant affects pop noise generated when power or the mute function is turned on
or off; thus, it must be determined on a per-application basis. (Refer to Figures 4 and 5.)
The value of the external pull-up resistor is determined, based on pop noise value.
For example, when the control voltage is changed from 5 V to 3.3 V, the pull-up resistor should be:
5 V
R
1
3.3 V/5 V × 47 kΩ = 31 kΩ
Figure 3 Mute Function
C
4
(pin 22)
22
1 kΩ
Mute On/Off
control
4
Figure 4 Mute Attenuation − V
1
−100
−120
−20
−40
−60
−80
and C
20
0
0
V CC = 13.2 V
f = 1 kHz
R L = 4 Ω
V O = 20dBm
BW = 400 Hz to 30 kHz
4
determine the time constant of the
0.5
Pin 22 control voltage: V
1
ATT – V
1.5
MUTE
MUTE
2
TB2926HQ
MUTE
2006-11-27
(V)
2.5
(V)
3