MC44826 Datasheet, PDF (1/8 Pages) Motorola, Inc – TV AND VCR I2C PLL TUNING CIRCUIT WITH 1.3 GHz PRESCALER AND MIX/OSC DECODER

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