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LC72722PM Datasheet

  • LC72722PM

  • Single-Chip RDS Signal-Processing System LSI

  • 115.38KB

  • 15頁

  • SANYO

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Ordering number : ENN6123A
CMOS IC
LC72722, 72722M, 72722PM
Single-Chip RDS
Signal-Processing System LSI
Overview
The LC72722 and LC72722M, LC72722PM are single-
chip system ICs that implement the signal processing
required by the European Broadcasting Union RDS (Radio
Data System) standard and by the US NRSC (National
Radio System Committee) RDBS (Radio Broadcast Data
System) standard. These ICs include band-pass filter,
demodulator, synchronization, and error correction circuits
as well as data buffer RAM on chip and perform effective
error correction using a soft-decision error correction
technique.
Functions
鈥?Band-pass filter: Switched capacitor filter (SCF)
鈥?Demodulator: RDS data clock regeneration and
demodulated data reliability information
鈥?Synchronization: Block synchronization detection (with
variable backward and forward protection conditions)
鈥?Error correction: Soft-decision/hard-decision error
correction
鈥?Buffer RAM: Adequate for 24 blocks of data (about 500
ms) and flag memory
鈥?Data I/O: CCB interface (power on reset)
鈥?Two synchronization detection circuits provide
continuous and stable detection of the synchronization
timing.
鈥?Data can be read out starting with the backward-
protection block data after a synchronization reset.
鈥?Bit slip detection and correction
鈥?Low spurious radiation
鈥?Fully adjustment free
鈥?Operating power-supply voltage: 4.5 to 5.5 V
鈥?Operating temperature: 鈥?0 to +85擄C
鈥?Package: LC72722 : DIP24S
LC72722M : MFP24S
LC72722PM : MFP24
Package Dimensions
unit: mm
3067A-DIP24S
[LC72722]
21.0
24
13
7.62
6.4
1
0.9
12
鈥?Error correction capability improved by soft-decision
error correction
鈥?The load on the control microprocessor can be reduced
by storing decoded data in the on-chip data buffer RAM.
(0.71)
1.78
0.48
0.95
0.51min
3.3 3.9max
(3.25)
Features
SANYO: DIP24S
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.
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鈥檚
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
51202AS (OT)/83199TH (OT) No. 6123-1/15
0.25

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