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參數資料
| 型號： | TS4962MEIJT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| 封裝： | ROHS COMPLIANT, FCP-9 |
| 文件頁數： | 26/41頁 |
| 文件大小： | 1104K |
| 代理商： | TS4962MEIJT |
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Application information
TS4962M
32/41
We have the following equations:
In general, for mixed situations (single-ended and differential inputs), it is best to use the
same rule, that is, to equalize impedance on both TS4962M inputs.
5.10
Output filter considerations
The TS4962M is designed to operate without an output filter. However, due to very sharp
transients on the TS4962M output, EMI radiated emissions may cause some standard
compliance issues.
These EMI standard compliance issues can appear if the distance between the TS4962M
outputs and loudspeaker terminal is long (typically more than 50mm, or 100mm in both
directions, to the speaker terminals). As the PCB layout and internal equipment device are
different for each configuration, it is difficult to provide a one-size-fits-all solution.
However, to decrease the probability of EMI issues, there are several simple rules to follow:
●
Reduce, as much as possible, the distance between the TS4962M output pins and the
speaker terminals.
●
Use ground planes for “shielding” sensitive wires.
●
Place, as close as possible to the TS4962M and in series with each output, a ferrite
bead with a rated current at minimum 2A and impedance greater than 50
Ω at
frequencies above 30MHz. If, after testing, these ferrite beads are not necessary,
replace them by a short-circuit. Murata BLM18EG221SN1 or BLM18EG121SN1 are
possible examples of devices you can use.
●
Allow enough footprint to place, if necessary, a capacitor to short perturbations to
ground (see the schematics in Figure 63).
Figure 63.
Method for shorting pertubations to ground
Out
+
Out
-
–
V
e1
300
R
in1
-------------
×… V
ek
300
R
ink
-------------
×
(V)
++
=
C
eq
k
Σ
j1
=
C
inj
=
C
inj
1
2
π R
inj
F
×
CLj
-------------------------------------------------------
(F)
=
R
eq
1
R
inj
----------
j1
=
k
∑
-------------------
=
Ferrite chip bead
about 100pF
Gnd
From TS4962 output
To speaker
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TS4962MEIKJT | 功能描述:3 W FILTER-FREE CLASS D AUDIO PO 制造商:stmicroelectronics 系列:- 包裝:剪切帶（CT） 零件狀態:在售 類型:D 類 輸出類型:1-通道（單聲道） 不同負載時的最大輸出功率 x 通道數:2.8W x 1 @ 4 歐姆 電壓 - 電源:2.4 V ~ 5.5 V 特性:消除爆音，差分輸入，待機，熱保護 工作溫度:-40°C ~ 85°C（TA） 供應商器件封裝:9-覆晶 封裝/外殼:9-UFBGA 標準包裝:1 |
| TS4972 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1.2W AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE HIGH |
| TS4972_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1.2W Audio Power Amplifier with Standby Mode Active High |
| TS4972EIJT | 功能描述:音頻放大器 1.2W audio power amp W/Standby 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 |
| TS4972EIJT1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1.2W Audio Power Amplifier with Standby Mode Active High |
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