MC44864 Datasheet, PDF (1/12 Pages) Motorola, Inc – PLL TUNING CIRCUIT WITH 1.3 GHz PRESCALER AND D/A CONVERTERS

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Advance Information
MC44864
PLL Tuning Circuit with
1.3 GHz Prescaler and D/A
Converters for Automatic
Tuner Alignment
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 IC generates the tuning voltage and the additional control
signals, such as band switching voltages.
The D/A section 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, MOSIAC™
(Motorola Oxide Self–Aligned Implanted Circuits).
• 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
• 3–State 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
Non–Matched 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 MIL–STD–883C, Method 3015.7
(2,000 V, 1.5 kΩ, 150 pF)
MOSAIC is a trademark of Motorola, Inc.
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)
Rating
Pin
Value
Unit
Power Supply Voltage (VCC1)
Band Buffer “Off” Voltage
9
6.0
V
14 – 17
15
V
Band Buffer “On” Current
14 – 17
20
mA
PLL TUNING CIRCUIT
WITH 1.3 GHz PRESCALER
AND D/A CONVERTERS
SEMICONDUCTOR
TECHNICAL DATA
20
1
M SUFFIX
PLASTIC PACKAGE
CASE 967
(EIAJ–20)
PIN CONNECTIONS
XTAL 1
PHO 2
Amp In 3
VCC2 4
VTUN 5
DA1 6
DA2 7
DA3 8
VCC1 9
HF1 10
20 Gnd
19 SDA
18 SCL
17 B7
16 B5
15 B3
14 B1
13 CA
12 Gnd
11 HF2
Operational Amplifier Power Supply
Voltage (VCC2)
4
36
V
Operational Amplifier Short Circuit Duration 5 – 8
Continuous
S
(0 to VCC2)
Storage Temperature
–
– 65 to +150 °C
Operating Temperature Range
–
0 to +70
°C
NOTE: ESD data available upon request.
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC44864M TA = 0° to +70°C
EIAJ–20
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 2
1