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LC72725VのメーカーはSanyo Semicon Deviceです、この部品の機能は「RDS Demodulation IC」です。 |
部品番号 | LC72725V |
| |
部品説明 | RDS Demodulation IC | ||
メーカ | Sanyo Semicon Device | ||
ロゴ | |||
このページの下部にプレビューとLC72725Vダウンロード(pdfファイル)リンクがあります。 Total 8 pages
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 LC72725M, LC72725V, LC72725NV
Electrical Characteristics at Ta = –20 to +70°C, Vssd = Vssa = 0 V, Vddd = Vdda.
Parameter
Input resistance
Internal feedback resistance
Center frequency
–3dB bandwidth
Gain
Stop band attenuation
Reference voltage output
Hysteresis
Low-level output voltage
High-level output voltage
High-level input current
Low-level input current
Output off leakage current
Current drain
Symbol
Conditions
Rmpxin MPXIN-Vssa: f = 57 kHz
Rcin CIN-Vssa: f = 57 kHz
Rf XIN
fc FLOUT
BW–3dB FLOUT
Gain MPXIN-FLOUT: f = 57 kHz
Att1 FLOUT: ∆f = ±7 kHz
Att2 FLOUT: f < 45 kHz, f > 70 kHz
Att3 FLOUT: f < 20 kHz
Vref Vref: Vdda = 3 V
VHIS
VOL1
VOL2
VOH
IIH1
IIH2
IIL1
IIL2
IOFF
Idd
TEST, MODE, RST, RDCL
RDDA, RDCL : I = 2 mA
RDS-ID (READY): I = 8 mA
RDDA, RDCL : I = 2 mA
TEST, MODE, RST, RDCL : VI = 6.5 V
XIN: VI = Vddd
TEST, MODE, RST, RDCL : VI = 0 V
XIN: VI = 0 V
RDS-ID (READY): VO = 6.5 V
Vddd + Vdda (Vddd = Vdda = 3 V)
Ratings
min typ
100
120
1.0
56.5
57.0
2.5 3.0
28 31
30
40
50
1.5
0.1 Vddd
Vddd – 0.4
2.0
2.0
5
max
57.5
3.5
34
0.4
0.4
5.0
11
5.0
11
5.0
Unit
KΩ
KΩ
MΩ
kHz
kHz
dB
dB
dB
dB
V
V
V
V
V
µA
µA
µA
µA
µA
mA
Package Dimensions
unit: mm
3035B
[LC72725M]
10.0
16
9
unit: mm
3178A
[LC72725V,LC72725NV]
5.2
16 9
1
(0.56)
1.27
8
0.35
0.15
SANYO: MFP16
1 8 0.15
0.22 0.65 (0.33)
SANYO: SSOP16
No. 7672-3/8
3Pages LC72725M, LC72725V, LC72725NV
Inputs and Outputs
TEST
0
0
1
1
MODE
0
1
0
1
Circuit operating mode
Master mode
Slave mode
Standby mode (crystal oscillator stopped)
IC test mode (Cannot be set by users.)
RDCL pin
Clock output
Clock input
—
—
RDS-ID/READY pin
RDS-ID output
READY output
—
—
RST = 0
RST = 1
RST pin
Normal operation
The RDS-ID and demodulation circuits are cleared, and (in slave mode) the READY state and memory are cleared.
Master mode RDS-ID output (active high)
Slave mode Readout data ready output (active high)
RDS ID/READY pin
Note: The RDS-ID (READY) pin is an n-channel open-drain output, and data is read out by connecting a pull-up resistor.
* LC72723: Active-low
RDCL/RDDA Output Timing
• Master mode
RST Operation
• Master mode
RDCL Control in Slave Mode
Caution: After an RST input, the
RDCL and RDDA outputs
stop at the high level until
the first RDS ID detection.
No. 7672-6/8
6 Page | |||
ページ | 合計 : 8 ページ | ||
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PDF ダウンロード | [ LC72725V データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
LC72725KV | RDS(RBDS) Demodulation IC | ON Semiconductor |
LC72725KVS | RDS(RBDS) Demodulation IC | ON Semiconductor |
LC72725M | RDS Demodulation IC | Sanyo Semicon Device |
LC72725NV | RDS Demodulation IC | Sanyo Semicon Device |