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參數(shù)資料
| 型號： | TS4956EIKJT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.055 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| 封裝： | ROHS COMPLIANT, FCP-18 |
| 文件頁數(shù)： | 39/52頁 |
| 文件大?。?/td> | 1709K |
| 代理商： | TS4956EIKJT |
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TS4956
Application information
44/51
4.8
Notes on PSRR measurements
4.8.1
What is PSRR?
The PSRR is the Power Supply Rejection Ratio. The PSRR of a device is the ratio between
a power supply disturbance and the result on the output. In other words, the PSRR is the
ability of a device to minimize the impact of power supply disturbance to the output.
4.8.2
How we measure the PSRR?
The PSRR was measured with the TS4956 in the configuration shown in the schematic in
Figure 132
Figure 132. Configuration schematic of TS4956 for PSRR measurement
Main operating principles of TS4956 for purposes of PSRR measurement:
●
The DC voltage supply (VCC) is fixed
●
The AC sinusoidal ripple voltage (Vripple) is fixed
●
No bypass capacitor Cs is used
The PSRR value for each frequency is calculated as:
RMS is a rms selective measurement.
F
E
D
C
B
A
Bias
control
Select
I2C
Mode
TS4956
LHP
MLO
PHG
RHP
LHP Amplifier
Speaker Amplifier
RHP Amplifier
PHG Amplifier
S
CL
S
DA
I2CVCC
BYPASS
Digital volume
SRP+
SRN-
MLO Amplifier
Stereo
Input Left
Input Right
LIN
RIN
Stereo
Input Left
Input Right
MIP
MIN
B4
A2
A1
A5
C
3
C5
C1
C7
D4
E
3
E5
E1
GN
D
GN
D
Vcc
B6
A7
D6
B2
D2
E7
+
Cb
1F
16 Ohms
RL
+
Cout
220F
I2CVCC
SCL
SDA
+
Cin1
330nF
+
Cin2
330nF
Diff. input +
Diff. input -
I2C BUS
+
Cin3
330nF
+
Cin4
330nF
SE input left
SE input right
8 Ohms
RL
16 Ohms
RL
16 Ohms
RL
8 Ohms
RL
MODE7
10 Ohms
Vripple
Vcc
PSRR
20Log
RMS
Out put
()
RMS
Vripple
()
---------------------------------- dB
()
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS4961TIQT | 功能描述:音頻放大器 MONO CLASS D 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS4962 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2.8W filter-free mono class D audio power amplifier |
| TS4962_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2.8W filter-free mono class D audio power amplifier |
| TS4962_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2.8 W filter-free mono class D audio power amplifier |
| TS4962EIJT | 制造商:STMicroelectronics 功能描述:AUD AMP SPKR 1CH MONO 2W CLS-D 9PIN FLIP-CHIP - Tape and Reel |
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