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MB3776APF-G-BND

MB3776APF-G-BND资料
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File Size : 116 KB Manufacturer:FUJITSU Description:The data will be transmitted in the silent period between the first and second power ring before a voice path is es- tablished. The HT9032 should first detect a valid ring and then perform the FSK demodulation. The typical ring detection circuit of the HT9032 is depicted below. The power ring signal is first rectified through a bridge circuit and then sent to a resistor network that attenu- ates the incoming power ring. The values of resistors and capacitor given in the figure have been chosen to provide a sufficient voltage at RDET1 pin to turn on the Schmitt trigger input with approximately a 40 Vrms or greater power ring input from tip and ring. When VT+ of the Schmitt is exceeded, the NMOS on the pin RTIME will be driven to saturation discharging capacitor on RTIME. This will initialize a partial power up, with only the portions of the part involved with the ring signal anal- ysis enabled, including RDET2 pin. With RDET2 pin en- abled, a portion of the power ring above 1.2V is fed to the ring analysis circuit. Once the ring signal is qualified, the RDET pin will be sent low.

	1PCS	100PCS	1K	10K
价格


型号：MB3776APF-G-BND 厂家：FUJITSU 封装：3087 批号：N/A 数量：SOP 说明：


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