參數(shù)資料
型號(hào): TS4890IS
元件分類: 音頻放大器
英文描述: AUDIO AMPLIFIER|SINGLE|BIPOLAR|TSSOP|8PIN|PLASTIC
中文描述: 音頻放大器|單|雙極| TSSOP封裝| 8引腳|塑料
文件頁數(shù): 28/31頁
文件大?。?/td> 432K
代理商: TS4890IS
TS4890
28/31
Components :
I
Note on how to use the PSRR curves
(page 8)
We havefinished a design and wehave chosen for
the components :
Rin=Rfeed=22k
Cin=100nF
Cb=1
μ
F
Now, on fig. 16, 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. 15 we can see the effect of Cb on the
PSRR (input grounded) vs. frequency.
Cb=100
μ
F, we can reach the -70dB value.
With
The process to obtain the final curve (Cb=100
μ
F,
Cin=100nF, Rin=Rfeed=22k
) is a simple transfer
point by point on each frequency of the curve on
fig. 16 to the curve on fig. 15.
The measurement result is shown on the next
figure.
Fig. 105 : PSRR changes with Cb
Designator
Part Type
R1
22k / 0.125W
R4
22k / 0.125W
R5
22k / 0.125W
R6
22k / 0.125W
R7*
(Vcc-Vf_led)/If_led
R8
10k / 0.125W
C4
470nF
C5
470nF
C6
100
μ
F
C7
100nF
C9
Short Circuit
C10
Short Circuit
C12
1
μ
F
D1*
Led 3mm
S1, S2, S6, S7
2mm insulated Plug
10.16mm pitch
S8
3 pts connector 2.54mm
pitch
P1, P2
PCB Phono Jack
U1
TS4890ID or TS4890IS
10
100
1000
10000
100000
70
60
50
40
30
Cin=100nF
Cb=100
μ
F
Cin=100nF
Cb=1
μ
F
Vcc = 5 to 2.2V
Rfeed = 22k, Rin= 22k
Rg = 100
, RL = 8
Tamb = 25
°
C
P
Frequency (Hz)
相關(guān)PDF資料
PDF描述
TS556CJ Analog Timer Circuit
TS556IJ Analog Timer Circuit
TS556MJ Analog Timer Circuit
TS556 LOW POWER DUAL CMOS TIMER
TS6120P Prescaler/Frequency Divider
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TS4890IST 功能描述:音頻放大器 1W Audio Power Amp 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
TS489IQT 功能描述:音頻放大器 100mW Stereo Amp 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
TS489IST 功能描述:音頻放大器 Popfree 100mW stereo headphone amp 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
TS4900 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE HIGH
TS4900ID 功能描述:音頻放大器 300mW Audio Pwr Amp 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