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MC44864

Features: • Complete Single Chip System for MPU Control• Selectable ÷8 Prescaler Accepts Frequencies up to 1.3 GHz• 15 Bit Programmable Divider Accepts Input Frequencies up to 165 MHz• Programmable Reference Divider• 3State Phase/Frequency Comparator• Operationa...

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SeekIC No. : 004416014 Detail

MC44864: Features: • Complete Single Chip System for MPU Control• Selectable ÷8 Prescaler Accepts Frequencies up to 1.3 GHz• 15 Bit Programmable Divider Accepts Input Frequencies up to 165 ...

MC44864 Data Sheet

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Part Number:
MC44864
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/27

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Product Details

Description



Features:

• Complete Single Chip System for MPU Control
• Selectable ÷8 Prescaler Accepts Frequencies up to 1.3 GHz
• 15 Bit Programmable Divider Accepts Input Frequencies up to 165 MHz
• Programmable Reference Divider
• 3State Phase/Frequency Comparator
• Operational Amplifier for Direct Varactor Control with Low Saturation Voltage
• Four Output Buffers (15 mA)
• Output Options for 62.5 kHz, Reference Frequency and the Programmable Divider
• The HF Input is Symmetrical
• Three 6 Bit DACs for Automatic Tuner Adjustment Allowing Use of NonMatched Varactors
• Better Tuner Performances Through Optimum Filter Response
• I2C Bus Controlled
• Four Chip Addresses for the PLL Section
• Four Chip Addresses for the D/A Section
• ESD Protected to MILSTD883C, Method 3015.7 (2,000 V, 1.5 k, 150 pF)


Pinout

Connection Diagram


Specifications

Rating
Pin
Value
Unit
Power Supply Voltage (VCC1)
9
6.0
V
Band Buffer "Off" Voltage
14 17
15
V
Band Buffer "On" Current
14 17
20
mA
Operational Amplifier Power Supply
Voltage (VCC2)
4
36
V
Operational Amplifier Short Circuit Duration
(0 to VCC2)
5 8
Continuous
S
Storage Temperature
-
65 to +150
Operating Temperature Range
-
0 to +70
NOTE: ESD data available upon request.


Description

The MC44864 is a tuning circuit for TV applications. This device contains a PLL section and a DAC section and is MCU controlled through an I2C Bus.

The PLL section contains all the functions required to control the VCO of a TV tuner. The MC44864 generates the tuning voltage and the additional control signals, such as band switching voltages.

The D/A section MC44864 generates three additional varactor voltages to feed all of the varactors of the tuner with individually optimized control voltages (automatic tuner adjustment). The MC44864 is manufactured on a single silicon chip using Motorola's high density bipolar process, MOSIACETM (Motorola Oxide SelfAligned Implanted Circuits).




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