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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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MSCBT Datenblatt(PDF) 1 Page - Mixed Signal Integration |
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MSCBT Datenblatt(HTML) 1 Page - Mixed Signal Integration |
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1 / 12 page  D Description _________________ The MSCBT IC is a CMOS chip that has the ana- log signal processing functions required by cellular phones and radio and other full duplex and half duplex devices. The MSCBT integrated circuit allows bi-directional transmit and receive gain volume and filtering for the voice band. In addition, the MSCBT provides the filter needed for Continuous Tone Control Squelch System (CTCSS) and Continuous Digital Control Squelch System (CDCSS) generation and detection. A comparator in the MSCBT allows for the recovered squelch or DTMF tones to be applied to a microcontroller for decoding. An internal highpass filter attenuates the tones from the voice band, by 50 dB, preventing voice from effecting tone transmission. A limiter increases the voice signals to be transmitted to 2Vpp for more effective modulation. The transmit output is fil- tered to a selectable 2.55 or 3kHz bandwidth before gain adjusts. A differential output is pro- vided for interface with a variety of FM transmitter choices. The MSCBT will operate from 3.3 V to 5.5 VDC. The MSCBT is available in a 32 pin 7x7mm LQFP. FFeatures ___________________________ Function down to 3.3 VDC Low Power Consumption 50 CTCSS Squelch Tones filtered CDCSS Code filter Programmable filter for pre-detection filtering Comparator for direct uP interface of detected signals Applications_______________________ Family Radio Service (FRS) 2-way Radio Land Mobile Radio (LMR) 2 way Radios General Mobile Radio Service (GMRS) 2 way Radios Low Power Radio Service (LPRS) 2 way Cellular Non-standard Voice-band communications Wired and Wireless Intercom Half-Duplex Speakerphone Analog Signal Processing Full-Duplex Speakerphone Analog Signal Processing Absolute M Maximum R Ratings______ Power Supply Voltage +6v Storage Temperature -60 to +150 °C Operating Temperature -20 to +85 °C 10/2014 Communications Baseband Transceiver Data Sheet www.mix-sig.com © 2014 Mixed Signal Integration 1 RXIN 67 Hz to 500 Hz CxCSS Tone TXTone CTCSS/CDCSS TONE FILTER GAIN RXTIN+ COUT RXTIN- TONEIN OUT- MICIN OUT+ RXIN VOUT DA2O ADIN DA1O VDDD VDDA AGND BYPASS DGND VSS X1 X2 RECEIVED SIGNAL SIGNAL PROCESSING SERIAL CONTROL INTERFACE TRANSMIT SIGNAL PROCESSING 8-BIT A-to-D CONVERTER 8-BIT D-to-A CONVERTER 8-BIT D-to-A CONVERTER Figure 1: MSCBT Block Diagram |
Ähnliche Teilenummer - MSCBT |
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Ähnliche Beschreibung - MSCBT |
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