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LC72121V Datasheet

  • LC72121V

  • PLL Frequency Synthesizers for Electronic Tuning

  • 378.04KB

  • 22頁

  • SANYO

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Ordering number : EN*5815A
CMOS IC
LC72121, 72121M, 72121V
PLL Frequency Synthesizers for Electronic Tuning
Preliminary
Overview
The LC72121 and the LC72121M and the LC72121V are
high input sensitivity (20 mVrms at 130 MHz) PLL
frequency synthesizers for 3 V systems. These ICs are
serial data (CCB) compatible with the LC72131, and
feature the improved input sensitivity and lower spurious
radiation (provided by a redesigned ground system)
required in high-performance AM/FM tuners.
鈥?I/O ports
鈥?Output-only ports: 4 pins
鈥?I/O ports: 2 pins
鈥?Supports the output of a clock time base signal.
鈥?Operating ranges
鈥?Supply voltage: 2.7 to 3.6 V
鈥?Operating temperature: 鈥?40 to 85擄C
鈥?Package
鈥?DIP22S, MFP24S, SSOP24
鈥?Comparison with the LC72131/M
鈥?Serial data compatible (CCB)
鈥?Identical pin functions
鈥?Two V
SS
pins were added.
鈥?The DIP version is pin compatible (V
SS
pins were
inserted as the DIP22S NC pins.)
鈥?The MFP product provides a modified pin
assignment (The MFP20 package was replaced by
an MFP24 package, and extra V
SS
pins were added.)
鈥?The SSOP24 is a newly developed package that has
the same pin assignment as the MFP24S product.
Functions
鈥?High-speed programmable divider
鈥?FMIN: 10 to 160 MHz ... Pulse swallower technique
(With built-in divide-by-2
prescaler)
鈥?AMIN: 2 to 40 MHz ... Pulse swallower technique
0.5 to 10 MHz ... Direct division technique
鈥?IF counter
鈥?IFIN: 0.4 to 12 MHz ... For AM and FM IF counting
鈥?Reference frequency
鈥?One of 12 reference frequencies can be selected
(using a 4.5 or 7.2 MHz crystal element)
1, 3, 5, 9, 10, 3.125, 6.25, 12.5, 15, 25, 50, or 100
kHz
鈥?Phase comparator
鈥?Supports dead zone control.
鈥?Built-in unlocked state detection circuit
鈥?Built-in deadlock clear circuit
鈥?An MOS transistor for an active low-pass filter is built
in.
鈥?CCB is a trademark of SANYO ELECTRIC CO., LTD.
鈥?CCB is SANYO鈥檚 original bus format and all the bus
addresses are controlled by SANYO.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
70398RM (OT) No. 5815-1/22

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