MC33411A中文资料900 MHz Cordless Phone Baseband with Compander数据手册恩XP规格书

描述 Description

Overview The MC33411 900 MHz Analog Cordless Phone Baseband system is designed to fit the requirements of a 900 MHz analog cordless telephone system. Included are three PLLs (Phase–Locked Loops). Two are intended for use with external VCOs and 64/65 or 128/129 dual modulus prescalers, and can control the transmit and receive (LO1) frequencies for 900 MHz communication. The third PLL is configured as the 2nd local oscillator (LO2), and is functional to 80 MHz. Archived content is no longer updated and is made available for historical reference only.

特性 Features

Also included are muting, audio gain adjust (internal and external), low battery/carrier detect, and a wide range for the
PLL reference frequency. The power supply range is 2.7 to 5.5 V. \"A\" version
devices have programmable MCU clock out and reference oscillator disable
functions, whereas these functions are always enabled for \"B\" version
devices.
•Complete Expander/Compressor for Superior Noise Rejection
•Two PLLs and a LO Suitable for a 900 MHz System
•Minimal External Components
•Transmit Path Includes Adjustable Gain Amplifier, Filters, Mute,
Compressor with Bypass and Limiter
•Receive Path Contains Data Slicer, Adjustable Gain Amplifier, Sidetone
Attenuator, Filters, Expander with Bypass, Mute, Volume Control and
Power Amplifier
•Dual A/Ds are Provided to Monitor RSSI and VCC
•Independent Power Amplifier with Differential Outputs and Mute
•Selectable Frequency for Switched Capacitor Filters, PLLs and the LO
•Reference Frequency Source can be a Crystal or System Clock
•Serial µP Port to Control Gain, Mute, Frequency Selection, Phase
Detector Gain, Power Down Modes, Low Battery Detect and Others
•Power Supply Range: 2.7 to 5.5 V
•Power Down Modes for Power Conservation