參數(shù)資料
型號(hào)： 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(yè)數(shù)： 4/24頁(yè)
文件大?。?/td> 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
source can be set independently (see Equation 4 and Equation 5, and Figure 31).
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(guān)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
TPA2034D1YZFR 2.75 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9
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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