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參數資料
| 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： | 4/24頁 |
| 文件大小： | 753K |
| 代理商： | TPA2031D1YZFT |
_
+
IN-
IN+
PWM
H-
Bridge
VO+
VO-
Internal
Oscillator
CS
ToBattery
VDD
GND
Bias
Circuitry
RI
Differential
Input
TPA2031D1
Filter-FreeClassD
SHUTDOWN
CI
TPA2031D1
SUMMING INPUT SIGNALS WITH THE TPA2031D1
Summing Two Differential Input Signals
Gain 1 +
V
O
V
I1
+
2 x 150 kW
R
I1
V
(4)
Gain 2 +
V
O
V
I2
+
2 x 150 kW
R
I2
V
(5)
SLOS546 – MAY 2008........................................................................................................................................................................................................ www.ti.com
Figure 29. TPA2031D1 Application Schematic With Differential Input and Input Capacitors
Figure 30. TPA2031D1 Application Schematic With Single-Ended Input
Most wireless phones or PDAs need to sum signals at the audio power amplifier or just have two signal sources
that need separate gain. The TPA2031D1 makes it easy to sum signals or use separate signal sources with
different gains. Many phones now use the same speaker for the earpiece and ringer, where the wireless phone
would require a much lower gain for the phone earpiece than for the ringer. PDAs and phones that have stereo
headphones require summing of the right and left channels to output the stereo signal to the mono speaker.
Two extra resistors are needed for summing differential signals (a total of 5 components). The gain for each input
If summing left and right inputs with a gain of 1 V/V, use RI1 = RI2 = 300 k.
12
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPA2031D1
相關PDF資料 |
PDF描述 |
|---|---|
| TPA2031D1YZF | 2.5 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA9 |
| TPA2031D1YZFR | 2.5 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA9 |
| TPA2032D1YZFR | 2.75 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9 |
| TPA2032D1YZF | 2.75 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| 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 |
| 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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