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參數資料
| 型號： | TPA2011D1YFFR |
| 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： | 6/24頁 |
| 文件大?。?/td> | 670K |
| 代理商： | TPA2011D1YFFR |
_
+
IN-
IN+
PWM
H-
Bridge
VO+
VO-
Internal
Oscillator
CS
To Battery
VDD
GND
Bias
Circuitry
RI2
+
-
Differential
Input 1
SHUTDOWN
RI1
+
-
Differential
Input 2
Filter-Free Class D
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
I2 +
1
2p R
I2
f
c2
C
I2 u
1
2p 150kW 20Hz
C
I2 u
53 nF
SLOS626A – DECEMBER 2009 – REVISED MAY 2010
www.ti.com
If summing a ring tone and a phone signal, set the ring-tone gain to Gain 2 = 2 V/V, and the phone gain to gain 1
= 0.1 V/V. The resistor values would be. . .
RI1 = 3 M, and = RI2 = 150 k.
Figure 31. Application Schematic With TPA2011D1 Summing Two Differential Inputs
Summing a Differential Input Signal and a Single-Ended Input Signal
Figure 32 shows how to sum a differential input signal and a single-ended input signal. Ground noise can couple
in through IN+ with this method. It is better to use differential inputs. The corner frequency of the single-ended
input is set by CI2, shown in Equation 8. To assure that each input is balanced, the single-ended input must be
driven by a low-impedance source even if the input is not in use
(6)
(7)
(8)
If summing a ring tone and a phone signal, the phone signal should use a differential input signal while the ring
tone might be limited to a single-ended signal. Phone gain is set at gain 1 = 0.1 V/V, and the ring-tone gain is set
to gain 2 = 2 V/V, the resistor values would be…
RI1 = 3 M, and = RI2 = 150 k.
The high pass corner frequency of the single-ended input is set by CI2. If the desired corner frequency is less
than 20 Hz...
(9)
(10)
14
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s) :TPA2011D1
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA2011D1YFFT | 功能描述:音頻放大器 3.2W mono class-D RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA2012D2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.1 W/CH STEREO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2012D2_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.1 W/CH STEREO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2012D2EVM | 功能描述:音頻 IC 開發工具 TPA2012D2 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| TPA2012D2PWP | 制造商:Texas Instruments 功能描述: |
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