參數(shù)資料
型號(hào)： TPA2006D1DRBTG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PQCC8
封裝： 3 X 3 MM, GREEN, PLASTIC, SON-8
文件頁(yè)數(shù)： 5/25頁(yè)
文件大小： 1002K
代理商： TPA2006D1DRBTG4
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)
C
I2 +
1
2p R
I2
f
c2
(8)
C
I2 u
1
2p 150kW 20Hz
(9)
C
>53nF
I2
(10)
_
+
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
www.ti.com ................................................................................................................................................. SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008
Figure 31 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.
The high pass corner frequency of the single-ended input is set by CI2. If the desired corner frequency is less
than 20 Hz:
Figure 31. Application Schematic With TPA2006D1 Summing Differential Input and Single-Ended Input
Signals
Copyright 2006–2008, Texas Instruments Incorporated
13
Product Folder Link(s): TPA2006D1
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TPA2008D2_07 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-W STEREO CLASS-D AUDIO POWER AMPLIFIER WITH DC VOLUME CONTROL
TPA2008D2EVM 功能描述:音頻 IC 開發(fā)工具 TPA2008D2 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
TPA2008D2PWP 功能描述:音頻放大器 Stereo Hi-Pwr 5-V Filter-Free Class-D 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
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