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參數資料
| 型號： | 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 |
| 文件頁數： | 5/25頁 |
| 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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| 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 |
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