參數資料
型號： TS4871IS
廠商： STMICROELECTRONICS
元件分類： 音頻／視頻放大
英文描述： 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
封裝： MICRO, PLASTIC, SO-8
文件頁數： 18/28頁
文件大?。?/td> 383K
代理商： TS4871IS
TS4871
25/28
s Note on how to use the PSRR curves
(page 7)
We have finished a design and we have chosen
the components values :
Rin=Rfeed=22k
Cin=100nF
Cb=1F
Now, on fig. 13, we can see the PSRR (input
grounded) vs frequency curves. At 217Hz we have
a PSRR value of -36dB.
In reality we want a value about -70dB. So, we
need a gain of 34dB !
Now, on fig. 12 we can see the effect of Cb on the
PSRR (input grounded) vs. frequency. With
Cb=100
F, we can reach the -70dB value.
The process to obtain the final curve (Cb=100
F,
Cin=100nF, Rin=Rfeed=22k
) is a simple transfer
point by point on each frequency of the curve on
fig. 13 to the curve on fig. 12.
The measurement result is shown on the next
figure.
Fig. 84 : PSRR changes with Cb
10
100
1000
10000
100000
70
60
50
40
30
Cin=100nF
Cb=100
F
Cin=100nF
Cb=1
F
Vcc = 5, 3.3 & 2.6V
Rfeed = 22k, Rin = 22k
Rg = 100
,RL = 8
Tamb = 25
°C
PSRR
(dB)
Frequency (Hz)
相關PDF資料
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TS488IQT 0.13 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8
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相關代理商/技術參數
參數描述
TS4871IST 功能描述:音頻放大器 1W Audio Power 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
TS4872 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:RAIL TO RAIL INPUT/OUTPUT 1W AUDIO POWER AMPLIFIER WITH STANDBY MODE
TS487-2 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY MODE
TS4872_05 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:RAIL TO RAIL INPUT/OUTPUT 1W AUDIO POWER AMPLIFIER WITH STANDBY MODE
TS4872IJT 制造商:STMicroelectronics 功能描述:
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