MC44818 Просмотр технического описания (PDF) - Motorola => Freescale
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MC44818 Datasheet PDF : 8 Pages
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PLL Tuning Circuit
with I2C Bus
The MC44818 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 MC44818 is a pin compatible drop in
replacement for the MC44817, where the only difference is the MC44818
has a fixed divide–by–8 prescaler (cannot be bypassed) and the MC44817
uses the three wire bus.
The MC44818 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). Data and
Clock Inputs are 3–Wire Bus Compatible
• Divide–by–8 Prescaler Accepts Frequencies up to 1.3 GHz
• 15 Bit Programmable Divider Accepts Input Frequencies up to 165 MHz
• Reference Divider: Programmable for Division Ratios 512 and 1024.
• 3–State Phase/Frequency Comparator
• Operational Amplifier for Direct Tuning Voltage Output (30 V)
• Four Integrated PNP Band Buffers for 40 mA (VCC1 to 14.4 V)
• Output Options for the Reference Frequency and the
Programmable Divider
• High Sensitivity Preamplifier
• Circuit to Detect Phase Lock
• Fully ESD Protected
MOSAIC is a trademark of Motorola, Inc.
Order this document by MC44818/D
MC44818
TV AND VCR
PLL TUNING CIRCUIT
WITH 1.3 GHz PRESCALER
AND I2C BUS
SEMICONDUCTOR
TECHNICAL DATA
16
1
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
PIN CONNECTIONS
Device
MC44818D
ORDERING INFORMATION
Operating
Temperature Range
TA = –20° to +80°C
Package
SO–16
SDA 1
SCL 2
XTAL 3
Amp In 4
VTUN 5
VCC2 33 V 6
VCC1 5.0 V 7
HF In 8
16 AS
15 Lock
14 VCC3 12 V
13 B3
12 B2
11 B1
10 B0
9 Gnd
(Top View)
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 2
1
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