 |
|||||||
|
|||||||
|
|
|||||||
|
|||||||
|
|
| L7809资料 | |
|
L7809 PDF Download |
|
File Size : 116 KB
Manufacturer:ST Description:Separation of the low-group and high group tones is achieved by applying the DTMF signal to the inputs of two sixth-order switched capacitor bandpass filters, the bandwidths of which correspond to the low and high group frequencies. The filter section also incorporates notches at 350 and 440 Hz for exceptional dial tone rejection. Each filter output is followed by a single order switched capacitor filter section which smooths the signals prior to limiting. Limiting is performed by high-gain comparators which are provided with hysteresis to prevent detection of unwanted low-level signals. The outputs of the comparators provide full rail logic swings at the frequencies of the incoming DTMF signals. |
|
| 相关型号 | |
| ◆ ADP3335ARMZ-5 | |
| ◆ LTC4414EMS8 | |
| ◆ LTC1968CMS8 | |
| ◆ LTC1871EMS | |
| ◆ LTC3548AEMSE | |
| ◆ LTC1412CG/IG | |
| ◆ LTC1562IG | |
| ◆ LTC1562CG | |
| ◆ AD7705BRZ | |
| ◆ ADM3053BRWZ | |
| 1PCS | 100PCS | 1K | 10K | ||
| 价 格 | |||||
|
型 号：L7809 厂 家：ST 封 装：TO-220 批 号：08+ 数 量：93 说 明：绝对原厂原装现货热卖！！ |
|||||
|
运 费： 所在地：深圳 新旧程度： |
|||||
| 联系人：陈小姐 |
| 电 话：0755-83605789 |
| 手 机：13428979109 |
| QQ：656259901,307704921 |
| MSN：chenqiongxia18@126.com |
| 传 真：0755-23816523 |
| EMail：656259901@qq.com |
| 公司地址： 广东深圳市福田区华强北（振华路）赛格高科德电子市场A1848室 |
