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參數資料
型號: TPA2017D2RTJT
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻/視頻放大
英文描述: 2.8 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20
封裝: 4 X 4 MM, GREEN, PLASTIC, QFN-20
文件頁數: 3/20頁
文件大小: 642K
代理商: TPA2017D2RTJT
Gain-dB
V
-dBV
IN
www.ti.com ..................................................................................................................................................................................................... SLOS584 – APRIL 2009
Since the number of gain steps is limited the compression region is limited as well. The following figure shows
how the gain changes vs. the input signal amplitude in the compression region.
Figure 20. Input Signal Voltage vs Gain
Thus the AGC performs a mapping of the input signal vs. the output signal amplitude.
Pins AGC1 and AGC 2 are used to enable/disable the limiter, compression, and noise gate function. Table 1
shows each function.
Table 1. FUNCTION DEFINITION FOR AGC1 AND AGC2
AGC1
AGC2
Function
0
AGC Function disabled
0
1
AGC Limiter Function enabled
1
0
AGC, Limiter, and Compression Functions enabled
1
AGC, Limiter, Compression, and Noise Gate Functions enabled
The default values for the TPA2017D2 AGC function are given in Table 2. The default values can be changed at
the factory during production. Refer to the TI representative for assistance with different default value requests.
Table 2. AGC DEFAULT VALUES
Attack Time
6.4 ms / step
Release Time
1.81 sec/step
Fixed Gain
6 dB
NoiseGate Threshold
20 mV
Output Limiter Level
9 dBV
Max Gain
30 dB
Compression Ratio
2:1
Copyright 2009, Texas Instruments Incorporated
11
Product Folder Link(s): TPA2017D2
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相關代理商/技術參數
參數描述
TPA2017D2RTJT 制造商:Texas Instruments 功能描述:; No. of Channels:2; Output Power Po rm
TPA2017D2V2RTJR 制造商:Texas Instruments 功能描述:
TPA2018D1 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-W Mono Class-D Audio Amplifier with SmartGain AGC/DRC
TPA2018D1YZFEVM 功能描述:音頻 IC 開發工具 TPA2018D1YZF Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
TPA2018D1YZFR 功能描述:音頻放大器 3W Mono 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
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