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參數資料
| 型號： | TPA6013A4PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO24 |
| 封裝： | GREEN, PLASTIC, HTSSOP-24 |
| 文件頁數： | 9/30頁 |
| 文件大小： | 743K |
| 代理商： | TPA6013A4PWPRG4 |
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SEMAX (V)
VOLUME-SEDIFF
SEDIFF (V)
-
+
VOLUME (V)
YES
NO
SE_VOLUME (V) = VOLUME (V) - SEDIFF (V)
SE_VOLUME (V) = SEMAX (V)
Is SEMAX>
(VOLUME-SEDIFF)
?
12
13
14
2.70
2.61
2.73
2.81
BTL
Gain-dB
VoltageonVOLUMEPin-V
www.ti.com
SLOS635 – NOVEMBER 2009
actually changes, is different depending on whether the voltage is increased or decreased as a result of the
hysteresis about each trip point. The gaps in Table 1 and Table 2 can also be thought of as indeterminate states
where the gain could be in the next higher gain step or the lower gain step depending on the direction the
voltage is changing. If using a DAC to control the volume, set the voltage in the middle of each range to ensure
that the desired gain is achieved.
A pictorial representation of the volume control can be found in Figure 28. The graph focuses on three gain steps
with the trip points defined in Table 1 for BTL gain. The dotted line represents the hysteresis about each gain
step.
Figure 27. Block Diagram of SE Volume Control
Figure 28. DC Volume Control Operation
Copyright 2009, Texas Instruments Incorporated
17
Product Folder Link(s) :TPA6013A4
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