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参数资料
| 型号： | TS4984IQT |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC16 |
| 封装： | 4 X 4 MM, 0.50 MM PITCH, LEAD FREE, TQFN-16 |
| 文件页数： | 11/29页 |
| 文件大小： | 901K |
| 代理商： | TS4984IQT |
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Application Information
TS4984
19/29
4.2 Gain in typical application schematic
The typical application schematic (Figure 64) is shown on page 18.
In the flat region (no Cin effect), the output voltage of the first stage is:
For the second stage: Vout2 =-Vout1 (V)
The differential output voltage is:
The differential gain, referred to as Gv for greater convenience, is:
Vout2 is in phase with Vin and Vout1 is phased 180° with Vin. This means that the positive terminal of the
loudspeaker should be connected to Vout2 and the negative to Vout1.
4.3 Low and high frequency response
In the low frequency region, Cin starts to have an effect. Cin forms with Rin a high-pass filter with a -3dB
cut-off frequency:
In the high frequency region, you can limit the bandwidth by adding a capacitor (Cfeed) in parallel with
Rfeed. It forms a low-pass filter with a -3dB cut-off frequency. FCH is in Hz.
V
ou t1
V
–
in
()
R
feed
R
in
---------------
(V)
=
V
out2
V
ou t1
–
2V
in
R
feed
R
in
---------------
(V)
=
G
v
V
out2
V
out1
–
V
in
------------------------------------
2
R
feed
R
in
---------------
==
F
CL
1
2
πR
inCin
--------------------------
(Hz)
=
F
CH
1
2
πR
feed Cfeed
----------------------------------------
(Hz)
=
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相关代理商/技术参数 |
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| TS4985 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins |
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| TS4985EIKJT | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins |
| TS4985EKIJT | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins |
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