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參數(shù)資料
| 型號： | LA4183 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | 2.3 W 2-Channel AF Power Amplifier for Radio Cassette Players |
| 中文描述： | 2.3西2通道自動對焦功率放大器無線電錄音機(jī) |
| 文件頁數(shù)： | 5/11頁 |
| 文件大?。?/td> | 286K |
| 代理商： | LA4183 |
The output of ch1 is divided with R5, R6 and led to pin 1 and then inputted to ch2. Since the attenuation degree (R5/R6) of ch1
output and the amplification degree (R4/R2 + R6)) of ch2 are fixed at an equal value, the ch2 output is in opposite phase with the
ch1 output. Therefore, the total voltage gain gets apparently 6 dB higher than the voltage gain of ch1 alone and is determined by
the following equation.
VG = 20 log
R3
R1
+ 6 [dB]
If the IC is used at a voltage gain less than this, the following equation with Rf added applies.
VG = 20 log
R3
R1 + Rf
+ 6 [dB]
2.
Starting time
Starting time depends on capacitance of C1 (C2) and C9 as shown in the diagram below. That is because of using a muting circuit
utilizing the C9 (decoupling capacitor) time constant for pop noise prevention when power is turned on and charging circuits for
C1 and C2 (NF capacitors).
3.
Crosstalk
Channel separation characteristic is important for single-package IC embodying two channels.
With LA4183, good channel separation is obtainable even as is, but if the BTL OUT pin (pin 1) is not grounded, it will invite
imbalance in crosstalk between the two channels. (Refer to the characteristics diagram.)
Quiescent
Dependence on C9
Quiescent
Dependence on C1 (C2)
LA4183
No.887-5/11
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| LA4185 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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| LA4195 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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