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參數(shù)資料
| 型號： | TPA2031D1YZFT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2.5 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA9 |
| 封裝： | 1.45 X1.45 MM, LEAD FREE, WCSP-9 |
| 文件頁數(shù)： | 5/24頁 |
| 文件大小： | 753K |
| 代理商： | TPA2031D1YZFT |
_
+
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
Summing a Differential Input Signal and a Single-Ended Input Signal
Gain 1 +
V
O
V
I1
+
2 x 150 kW
R
I1
V
(6)
Gain 2 +
V
O
V
I2
+
2 x 150 kW
R
I2
V
(7)
(
)
1
I2
c2
C
=
2
R f
p
(8)
www.ti.com........................................................................................................................................................................................................ SLOS546 – MAY 2008
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 TPA2031D1 Summing Two Differential Inputs
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
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...
Copyright 2008, Texas Instruments Incorporated
13
Product Folder Link(s): TPA2031D1
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| TPA2031D1YZF | 2.5 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA9 |
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| TPA2032D1YZFR | 2.75 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA2032D1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.75-W FIXED GAIN MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2032D1YZF | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.75-W FIXED GAIN MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2032D1YZFR | 功能描述:音頻放大器 2.75W Mon Fully Diff Class-D Aud Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA2032D1YZFT | 功能描述:音頻放大器 2.75W Mon Fully Diff Class-D Aud Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA2033D1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.75-W FIXED GAIN MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
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