LC72146

Manufacturer Part NumberLC72146
DescriptionPLL frequency synthesizer for electronic tuning
ManufacturerSanyo Semiconductor Corporation
LC72146 datasheet
 


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Ordering number : ENN4922D
Overview
The LC72146 is a PLL frequency synthesizer LSI circuit
for electronic tuning in car stereo systems. The LC72146
supports the construction of high-performance, multi-
functional electronic tuning systems for the VHF MW,
and LW bands.
Features
• High-speed programmable dividers for
— 10 to 160 MHz on FMIN using pulse swallower
— 0.5 to 40.0 MHz on AMIN using pulse swallower
and direct division
• General-purpose counters
— HCTR for 0.4 to 25.0 MHz frequency measurement
— LCTR for 10 to 500 kHz frequency measurement
and 1.0 Hz to 20 10
3
kHz period measurement
• Reference frequencies: Twelve selectable reference
frequencies (4.5 or 7.2 MHz crystal) 1, 3, 5, 9, 10,
3.125, 6.25, 12.5, 25, 30, 50 and 100 kHz
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is SANYO’s original bus format and all the bus
addresses are controlled by SANYO.
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
LC72146, 72146M, 72146V
PLL Frequency Synthesizer
for Electronic Tuning
• Phase comparator
— Insensitive band control
— Unlock detection
— Sub-charge pump for high-speed locking
— Deadlock clear circuit
• CCB input/output data interface
• Power-on reset circuit
• Built-in MOS transistor for a low-pass filter
• Inputs/outputs (using five general-purpose input/output
ports)
— Maximum of seven inputs (max)
— Maximum of seven outputs (max/four n-channel
open-drain and three CMOS outputs)
— Time-base output for clock (8 Hz)
• Operating ranges
— Supply voltage ..................................4.5 to 5.5 V
— Opetating temperature ......................–40 to 85 C
• Package
— DIP24S, MFP24S, SSOP24
N2001TN (OT)/73096HA (OT)/11095TH (OT) No. 4922-1/22
CMOS IC

LC72146 Summary of contents