Order this document by MC44826/D
MC44826
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).
TV AND VCR
I2C PLL TUNING CIRCUIT
WITH 1.3 GHz PRESCALER
AND MIX/OSC DECODER
SEMICONDUCTOR
TECHNICAL DATA
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•
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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 kΩ, 150 pF)
14
1
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
MOSAIC is a trademark of Motorola, Inc.
PIN CONNECTIONS
VTUN
Gnd
HF1
HF2
VCC1
B1
B3
1
2
3
4
5
6
7
14
13
12
11
10
9
8
PHO
Xtal
DEC
SDA
SCL
CA
B5
ORDERING INFORMATION
Device
MC44826D
Operating
Temperature Range
TA = –20° to +80°C
Package
SO–14
(Top View)
©
Motorola, Inc. 1996
Rev 1
MOTOROLA ANALOG IC DEVICE DATA
1
MOTOROLA [ MOTOROLA, INC ]
