MC44826中文資料摩托羅拉數(shù)據(jù)手冊PDF規(guī)格書

PLL Tuning Circuit with I2C Bus

The MC44826 is a tuning circuit for TV and VCR tuner applications. It contains, on one chip, all the functions required for PLL control of a VCO. This integrated circuit also contains a high frequency prescaler and thus can handle frequencies up to 1.3 GHz. The circuit has a band decoder that provides the band switching signal for the mixer/oscillator circuit. The decoder is controlled by the buffer bits or independently by extra bits T6 and T7.

The MC44826 has a programmable 512/1024 reference divider and is manufactured on a single silicon chip using Motorola’s high density bipolar process, MOSAIC? (Motorola Oxide Self Aligned Implanted Circuits).

? Complete Single Chip System for MPU Control (I2C Bus)

? Divide–by–8 Prescaler Accepts Frequencies up to 1.3 GHz

? 15 Bit Programmable Divider

? Reference Divider: Programmable for Division Ratios 512 and 1024

? 3–State Phase/Frequency Comparator

? Operational Amplifier for Direct Tuning Voltage Output (30 V)

? Four Programmable Chip Addresses

? Integrated Band Decoder for the Mixer/Oscillator Circuit

? Band Buffers with Low “On” Voltage (0.4 V Maximum at 15 mA)

? Fully ESD Protected to MIL–STD–883C, Method 3015.7 (2000 V, 1.5 k?, 150 pF)