- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374302 > KA22296 (SAMSUNG SEMICONDUCTOR CO. LTD.) Playback / Record PRE AMP FOR DOUBLE DECK(重放/錄音前置放大器) PDF資料下載
參數(shù)資料
| 型號： | KA22296 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | Playback / Record PRE AMP FOR DOUBLE DECK(重放/錄音前置放大器) |
| 中文描述： | 播放/錄音前級的雙層（重放/錄音前置放大器） |
| 文件頁數(shù)： | 9/17頁 |
| 文件大?。?/td> | 157K |
| 代理商： | KA22296 |
KA22296 DOUBLE DECK SYSTEM FOR RADIO CASSETTE
2. DESCRIPTION OF SWITCH FUNCTION
2 - 1. Controlling the selection switch of pin 15 play / record
Pin 15 is not constructed with logic from inside, however it is constructed by controlling 3 level switches caused by external
voltage input. As soon as the power is on, it really doesn
’
t matter if the attach switch is in play ( low mode ). Nevertheless is
open ( record mode), it will turn to record stage and depending on it, the ALC circuit will function. After and at the incident of
source of electric power being approved, all of the circuits will eventuate unstable and results in tendency not known.
Sometime in the begining, it is necessary to find a method to stop ALC movement for a set period of time, and is developed
through using original switch period.
Immediately after the approval of source of electric power, through 100UA's
current source with capacitor and resistance in the Pin 15, the Pin 15's
current gradually increased. Until it reaches the setted voltage level, the
record state can not be accomodated. While under this process, the circuit in
record part will not receive any inputs, and by disc harging the generated in-
crease voltage of ALC P/R, turn it into initiation.
In the section of high speed recording, 3.5 Volts of control voltage must be
inflicted. But under this condition, it is wise to operate at high speed recording
after delaying the time by connecting the resistance with the outside electrical
series or just approval it first and apply the procedure next.
Note 1
: 3 steps of input switch ( Pin 15, 17 ) controlled voltage.
In the 3 stepped switch recording system, play deciding
Pin 15 exist and Mic mode deciding function P17 also
exists as well. Voltage in the high mode is more than
enough. Low mode's voltage will be achieved if the
voltage goes below 0.3 V. The open mode does not
deal with any other voltage so just open it.
100uA
15
47uF
12§ú
Control
Voltage
Fig 2 - 1
Low
Open
High
0.5V
0.9V
2.1V
2.6V
0 ~ 0.3V
open
state
3.5V ~ VCC
switch input
control
Fig 2 - 3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| KA22425B | AM/FM 1 Chip Radio(AM/FM單片收音電路) |
| KA22426B | AM/FM 1 Chip Radio(AM/FM 單片收音電路) |
| KA22427C | AM/FM 1 Chip Radio(AM/FM單片收音電路) |
| KA22429 | FM 1 CHIP RADIO |
| KA22429D | FM 1 CHIP RADIO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KA224 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Quad OP amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| KA224_Q | 功能描述:運(yùn)算放大器 - 運(yùn)放 Quad OP amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| KA22425 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:AM/FM 1CHIP RADIO |
| KA22425BD | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:INTROCUCTION |
| KA22425D | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:AM/FM 1 CHIP RADIO |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。