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PDF LC72725V Data sheet ( Hoja de datos )
| Número de pieza | LC72725V | |
| Descripción | RDS Demodulation IC | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENN7672A
SANYO Semiconductors
DATA SHEET
LC72725M
LC72725V
LC72725NV
CMOS IC
RDS Demodulation IC
Overview
The LC72725 is an RDS (Radio Data System) signal demodulation IC. This IC integrates a bandpass filter, the
demodulation circuit, and buffer RAM on a single chip and can read out RDS data in slave mode operation with the
provision of an external clock input. It also supports master mode, in which the data is read out in synchronization with an
RDS clock output provided by the IC itself.
Functions
• Bandpass filter: Switched capacitor filter (SCF)
• RDS demodulation: Functions include 57kHz carrier regeneration, clock regeneration, biphase decoding, and
differential decoding
• Buffer RAM: Stores 128 bits (about 100 ms) of data.
• Data output: Output can be switched between master mode and slave mode readout.
• RDS ID detection: Supports ID reset
• Standby control: Stops the crystal oscillator.
• Low voltage: 2.7 to 5.5 V (LC72723: 4.5 to 5.5 V)
• Improvement sample in crystal oscillation capability: LC72725NV
• Fully adjustment free.
Ratings
• Operating supply voltage: 2.7 to 5.5 V
• Operating temperature: –20 to +70°C
• Packages: MFP16 and SSOP16 (LC72723: DIP 16 and MFP16)
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
92104TN (OT) / N1503TN (OT) No. 7672-1/8
1 page  
Pin Descriptions
Pin No.
Pin
3 VREF
LC72725M, LC72725V, LC72725NV
Function
Reference voltage output (Vdda/2)
I/O Pin circuit type
Output
4
MPXIN
Base band (multiplex) signal input
Input
7
FLOUT
Subcarrier output (filter output)
Output
8 CIN Subcarrier input (comparator input)
5
Vdda
Analog system power supply (+3 V)
6
Vssa
Analog system ground
14
XOUT
Crystal element output (4.332 MHz)
13 XIN Crystal element input (or external reference signal input)
9
TEST
Test input
10
MODE
Readout mode setting (0: master, 1: slave)
15
RST
RDS ID and RAM reset (Active high logic)
2
RDDA
RDS data output
RDS clock output (master mode)
16 RDCL
RDS clock input (slave mode)
1
RDS-ID/READY
RDS ID/ready output (Active high)
12
Vddd
Digital system power supply (+3 V)
11
Vssd
Digital system ground
Input
—
—
Output
—
—
Input
Output
I/O
Output
—
—
—
—
No. 7672-5/8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LC72725V.PDF ] | |
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