参数资料
型号: TPA0162PWPG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 音频控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24
封装: GREEN, PLASTIC, HTSSOP-24
文件页数: 20/34页
文件大小: 812K
代理商: TPA0162PWPG4
www.ti.com
INPUT MUX OPERATION
ROUT+
21
R
MUX
RHPIN
RLINEIN
+
23
20
8
RIN
ROUT
16
+
32-Step
Volume
Control
32-Step
Volume
Control
CIRHP
0.47
F
CIRLINE
0.47
F
Right
Headphone
Input Signal
Right Line
Input Signal
CRIN
0.47
F
SHUTDOWN MODES
TPA0162
SLOS249E – JUNE 1999 – REVISED SEPTEMBER 2004
Figure 39. TPA0162 Example Input MUX Circuit
The input MUX provides the user with a means to select from two different audio sources. In BTL mode, the
LINE input is selected. In SE mode, the HP inputs are selected. RIN and LIN must be AC-grounded in SE mode.
The TPA0162 provides a shutdown mode to minimize supply current (IDD) during periods of nonuse to conserve
battery power. Hold the SHUTDOWN input terminal high during normal operation when the amplifier is in use.
Pulling SHUTDOWN low mutes the outputs and causes the amplifier to enter a low-current state, IDD = 150 A.
Do not leave SHUTDOWN unconnected because amplifier operation would be unpredictable.
Table 5. Shutdown and Mute Mode Functions
INPUTS(1)
AMPLIFIER STATE
SE/BTL
SHUTDOWN
INPUT
OUTPUT
Low
High
Line
BTL
X
Low
X
Mute
High
HP
SE
(1)
Do not leave inputs unconnected.
27
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