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參數資料
| 型號： | TPA6211A1DGN |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | GREEN, PLASTIC, MSOP-8 |
| 文件頁數： | 7/32頁 |
| 文件大小： | 916K |
| 代理商： | TPA6211A1DGN |
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_
+
VDD
VO+
VO
GND
6
5
8
7
To Battery
Cs
IN
IN+
4
3
RI
40 k
40 k
+
CI
CF
Ca
Ra
(1) C(BYPASS) is optional
Bias
Circuitry
2
SHUTDOWN
1
C(BYPASS)(1)
100 k
Selecting Components
Gain = RF/RI
(1)
fc +
1
2p R
I
C
I
(2)
-3 dB
fc
www.ti.com........................................................................................................................................................ SLOS367C – AUGUST 2003 – REVISED JUNE 2008
Figure 31. Differential Input Application Schematic With Input Bandpass Filter
Input Capacitor (CI)
The TPA6211A1 does not require input coupling
Resistors (RI)
capacitors when driven by a differential input source
biased from 0.5 V to VDD - 0.8 V. Use 1% tolerance
The input resistor (RI) can be selected to set the gain
or better gain-setting resistors if not using input
of the amplifier according to equation 1.
coupling capacitors.
In the single-ended input application,
an
input
The internal feedback resistors (RF) are trimmed to
capacitor, CI, is required to allow the amplifier to bias
40 k
.
the input signal to the proper dc level. In this case, CI
and RI form a high-pass filter with the corner
Resistor matching is very important in fully differential
frequency defined in Equation 2.
amplifiers. The balance of the output on the reference
voltage depends on matched ratios of the resistors.
CMRR, PSRR, and the cancellation of the second
harmonic distortion diminishes if resistor mismatch
occurs. Therefore, 1%-tolerance resistors or better
are recommended to optimize performance.
Bypass Capacitor (CBYPASS) and Start-Up Time
The internal voltage divider at the BYPASS pin of this
device
sets
a
mid-supply
voltage
for
internal
references and sets the output common mode
voltage to VDD/2. Adding a capacitor filters any noise
into
this
pin,
increasing
kSVR.
C(BYPASS)also
determines the rise time of VO+ and VO- when the
device exits shutdown. The larger the capacitor, the
slower the rise time.
The value of CI is an important consideration. It
Copyright 2003–2008, Texas Instruments Incorporated
15
Product Folder Link(s): TPA6211A1
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相關代理商/技術參數 |
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| TPA6211A1DGNG4 | 功能描述:音頻放大器 Mono Fully Diff Class-AB 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 |
| TPA6211A1DGNR | 功能描述:音頻放大器 Mono Fully Diff Class-AB 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 |
| TPA6211A1DGNRG4 | 功能描述:音頻放大器 Mono Fully Diff Class-AB 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 |
| TPA6211A1DRB | 功能描述:音頻放大器 Mono Fully Diff Class-AB 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 |
| TPA6211A1DRBG4 | 功能描述:音頻放大器 Mono Fully Diff Class-AB 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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