TSA5522T中文资料1.4 GHz I2C-bus controlled synthesizer数据手册恩XP规格书

描述 Description

FEATURES
• Complete 1.4 GHz single chip system
• Three PNP band switch buffers (20 mA)
• Four bus-controlled bidirectional ports (NPN
   open-collector outputs); only one port in 16-pin version
• 33 V tuning voltage output
• In-lock detector
• 5-step ADC
• Mixer-Oscillator (M/O) band switch output
• 15-bit programmable divider
• Programmable reference divider ratio (512, 640 or 1024)
• Programmable charge-pump current (50 or 250 µA)
• Varicap drive disable
• I2C-bus format
   – address plus 4 data bytes transmission (write mode)
   – address plus 1 status byte transmission (read mode)
   – three independent addresses
• Low power and low radiation.APPLICATIONS
• TV tuners and front-ends
• VCR tuners.

特性 Features

• Complete 1.4 GHz single chip system
• Three PNP band switch buffers (20 mA)
• Four bus-controlled bidirectional ports (NPN
   open-collector outputs); only one port in 16-pin version
• 33 V tuning voltage output
• In-lock detector
• 5-step ADC
• Mixer-Oscillator (M/O) band switch output
• 15-bit programmable divider
• Programmable reference divider ratio (512, 640 or 1024)
• Programmable charge-pump current (50 or 250 µA)
• Varicap drive disable
• I2C-bus format
   – address plus 4 data bytes transmission (write mode)
   – address plus 1 status byte transmission (read mode)
   – three independent addresses
• Low power and low radiation.

应用 Application

• TV tuners and front-ends
• VCR tuners.