參數(shù)資料
型號: TPA6030A4PWP
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28
封裝: GREEN, PLASTIC, TSSOP-28
文件頁數(shù): 14/32頁
文件大?。?/td> 698K
代理商: TPA6030A4PWP
TPA6030A4
SLOS395B DECEMBER 2002 REVISED JANUARY 2005
www.ti.com
21
Tying the SE/BTL and IN2/IN1 Pins Together
In some applications, it may be desirable to have one input specifically for BTL operation and one input specifically for SE
operation. This is accomplished by tying the SE/BTL and IN2/IN1 pins together and connecting them to a common control
voltage. An example of this type of configuration can be found in Figure 22. The two pins are tied together and are
connected to the resistor divider network. That network is connected to the stereo headphone jack, and is closed when
no plug is inserted. This pulls both the IN2/IN1 and SE/BTL pins low, causing the amplifier to go into BTL mode using the
IN1 (RIN1 and LIN1) inputs. Should a headphone plug be inserted into the headphone jack, both inputs would be pulled
high, and the amplifier would be in SE mode using the IN2 inputs.
26
To Rout+ and Right
Speaker
To Lout+ and Left
Speaker
VCC
100 k
1 k
100 k
TPA6030A4PWP
10
11
12
14
13
Rout
PVcc
SEMAX
RIN1
RIN1+
RIN2
RIN2+
Vcc
LIN1
LIN1+
LIN2
LIN2+
NC
Lout
1
2
3
15
16
18
19
20
21
23
25
27
28
GND
Rout +
SE/BTL
IN2/IN1
SHUTDOWN
VOLUME
SEDIFF
CLK
GND
BYPASS
PVcc
Lout +
GND
4
5
6
7
8
9
5VREG
17
24
22
Figure 26. Resistor Divider Network
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