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参数资料
| 型号： | LA3241 |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 2 CHANNEL, AUDIO PREAMPLIFIER, PDIP24 |
| 封装： | 0.300 INCH, SDIP-24 |
| 文件页数： | 13/15页 |
| 文件大小： | 206K |
| 代理商： | LA3241 |
No. 2564-7/15
LA3241
(4) Relationship between the electronic switch on and off control voltage levels and the power supply voltage
(See VCC – VCONT for the data.)
Pin9,16(V)
VCC(V)
VCONT
ILA00611
When the supply voltage VCC is determined, the corresponding
electronic switch control pin (pins 9 and 16) control levels will be
determined. There is a threshold area of about 1 V. The center
point of the threshold area for a given supply voltage VCC will be
roughly:
1/2
× (V
CC – 0.9) [V]
Therefore, the electronic switches can be turned on and off
reliably by applying voltages that are at least ±0.5 V of this center
point voltage to the electronic switch control pins (pins 9 and 16).
(5) Add a 470 pF capacitor between pin 15 and ground to prevent oscillation at low temperature in the microphone
amplifier output.
ILA00612
input
50k
10k
output
470pF
+
--
11
10
15
(6) The ALC switching level can be implemented with pin 7. The IC supply voltage VCC must be turned off temporarily
when switching to prevent ALC failure.
50
SBD
× 4
ALC Drive
50
TR2
TR1
ILA00613
18
7
8
17
(7) Although the ALC level is converted by opening (0.7 V) or shorting (0.46 V) pin 17, basically, the ALC start DC
threshold level is switched by turning transistor TR2 on (pin 17 open) or off (pin 17 shorted).
Rectifier Block Equivalent Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LA3242 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Preamplifier for Compact Cassette Recorder Recording-only Use |
| LA3245 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| LA3246 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Stereo Preamplifier for Compact Double Cassette Playback-only Use |
| LA32B-G-4-PF | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA32B-G-PF | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
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