參數(shù)資料
型號(hào)： TA8275
廠商： Toshiba Corporation
英文描述： Max Power 41 W BTL x 4 ch Audio Power IC
中文描述： 最大功率41糯橋接× 4通道音頻功率IC
文件頁(yè)數(shù)： 3/14頁(yè)
文件大?。?/td> 250K
代理商： TA8275
TA8275H
2002-02-13
3
Figure 2 With pin 4 set to High,
Power is turned ON
ON
4
OFF
10 k
to BIAS
CUTTING CIRCUIT
2V
BE
V
CC
Power
Caution and Application Method
(Description is made only on the single channel.)
1. Voltage Gain Adjustment
This IC has no NF (negative feedback) terminals. Therefore, the voltage gain can’t adjusted, but it makes
the device a space and total costs saver.
The voltage gain of Amp.1:
The voltage gain of Amp.2A, B:
The voltage gain of BLT Connection: G
V (BTL)
6 dB
Therefore, the total voltage gain is decided by expression below.
G
V
G
V1
G
V2
G
V (BTL)
0 20 6 26 dB
G
V1
0 dB
G
V2
20 dB
2. Stand-by SW Function
(pin 4)
By means of controlling pin 4 (stand-by terminal)
to high and low, the power supply can be set to ON
and OFF. The threshold voltage of pin 4 is set at
about 3V
BE
(typ.), and the power supply current is
about 2 A (typ.) at the stand-by state.
Control Voltage of pin 4: V
SB
Stand-by
Power
V
SB
(V)
ON
OFF
0~1.5
OFF
ON
3~V
CC
Adjustage of Stand-by SW
(1)
Since V
CC
can directly be controlled to ON or OFF by the microcomputer, the switching relay can be
omitted.
Since the control current is microscopic, the switching relay of small current capacity is satisfactory
for switching
(2)
Amp. 1
Input
Amp. 2A
Amp. 2B
Figure 1 Block Diagram
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參數(shù)描述
TA8275H 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Max Power 41 W BTL x 4 ch Audio Power IC
TA8276H 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Max Power 35 W BTL 】 4 ch Audio Power IC
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TA8277 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:MAX POWER 43 W BTL x 4 CH AUDIO POWER IC
TA8277H 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:MAX POWER 43 W BTL x 4 CH AUDIO POWER IC
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