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參數資料
| 型號： | TPA2011D1YFFT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3.24 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9 |
| 封裝： | 1.21 X 1.16 MM, 0.40 MM PITCH, GREEN, PLASTIC, DSBGA-9 |
| 文件頁數： | 7/24頁 |
| 文件大?。?/td> | 670K |
| 代理商： | TPA2011D1YFFT |
_
+
IN-
IN+
PWM
H-
Bridge
VO+
VO-
Internal
Oscillator
CS
To Battery
VDD
GND
Bias
Circuitry
RI2
Differential
Input 1
Filter-Free Class D
SHUTDOWN
RI1
Single-Ended
Input 2
CI2
Gain 1 +
V
O
V
I1
+
2 x 150 kW
R
I1
V
Gain 2 +
V
O
V
I2
+
2 x 150 kW
R
I2
V
C
I1 +
1
2p R
I1
f
c1
C
I2 +
1
2p R
I2
f
c2
C
P +
C
I1 )
C
I2
R
P +
R
I1
R
I2
R
I1 )
R
I2
www.ti.com
SLOS626A – DECEMBER 2009 – REVISED MAY 2010
Figure 32. Application Schematic With TPA2011D1 Summing Differential Input and Single-Ended Input
Signals
Summing Two Single-Ended Input Signals
Four resistors and three capacitors are needed for summing single-ended input signals. The gain and corner
frequencies (fc1 and fc2) for each input source can be set independently (see Equation 11 through Equation 14,
and Figure 33). Resistor, RP, and capacitor, CP, are needed on the IN+ terminal to match the impedance on the
IN– terminal. The single-ended inputs must be driven by low impedance sources even if one of the inputs is not
outputting an ac signal.
(11)
(12)
(13)
(14)
(15)
(16)
Copyright 2009–2010, Texas Instruments Incorporated
15
Product Folder Link(s) :TPA2011D1
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