●Universal Cordless Telephone Subsystem IC
●The MC13109 integrates several of the functions required for a cordless telephone into a single integrated circuit. This significantly reduces component count, board space requirements, and external adjustments. It is designed for use in both the handset and the base.
●• Dual Conversion FM Receiver
●– Complete Dual Conversion Receiver – Antenna Input to Audio Output 80 MHz Maximum Carrier Frequency
●– RSSI Output
●– Carrier Detect Output with Programmable Threshold
●– Comparator for Data Recovery
●– Operates with Either a Quad Coil or Ceramic Discriminator
●• Compander
●– Expandor Includes Mute, Digital Volume Control and Speaker Driver
●– Compressor Includes Mute, ALC and Limiter
●• Dual Universal Programmable PLL
●– Supports New 25 Channel U.S. Standard with No External Switches
●– Universal Design for Domestic and Foreign CT–1 Standards
●– Digitally Controlled Via a Serial Interface Port
●– Receive Side Includes 1st LO VCO, Phase Detector, and 14–Bit Programmable Counter and 2nd LO with 12–Bit Counter
●– Transmit Section Contains Phase Detector and 14–Bit Counter
●– MPU Clock Output Eliminates Need for MPU Crystal
●• Supply Voltage Monitor
●– Externally Adjustable Trip Point
●• 2.0 to 5.5 V Operation with One–Third the Power Consumption of Competing Devices
●• AN1575: Refer to Application Note for a List of “Worldwide Cordless Telephone Frequencies” (Chapter 8 Addendum of DL128 Data Book)
