器件名称:
U2731B
功能描述:
DAB ONE- CHIP FRONT END
文件大小:
681.26KB 共25页
简 介:
Features 8.5 V Supply Voltage Voltage Regulator for Stable Operating Conditions Microprocessor-controlled Via a Simple Two-wire Bus Two Addresses Selectable Gain-controlled RF Amplifier with Two Inputs, Selectable Via a Simple Two-wire Bus Control Balanced RF Amplifier Inputs Gain-controlled RF Mixer Four-pin Voltage-controlled Oscillator SAW Filter Driver with Differential Low-impedance Output AGC Voltage Generation for RF Section, Available at Charge-pump Output (Can Also Be Used to Control a PIN Diode Attenuator) Gain-controlled IF Amplifier Balanced IF Amplifier Inputs Selectable Gain-controlled IF Mixer Single-ended IF Output AGC Voltage Generation for IF Section, Available at Charge-pump Output Separate Differential Input for the IF AGC Block All AGC Time Constants Adjustable AGC Thresholds Programmable Via a Simple Two-wire Bus Three AGC Charge Pump Currents Selectable (Zero, Low, High) Reference Oscillator Programmable 9-bit Reference Divider Programmable 15-bit Counter 1:2048 to 1:32767 Effectively Tristate Phase Detector with Programmable Charge Pump Superior Phase-noise Performance Deactivation of Tuning Output Programmable Three Switching Outputs (Open Collector) Three D/A Converters (Resolution: 8 Bits) Lock Status Indication (Open Collector) DAB One-chip Front End U2731B Electrostatic sensitive device. Observe precautions for handling. Description The U2731B is a monolithically integrated Digital Audio Broadcasting one-chip front e……
