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UPC2539のメーカーはNECです、この部品の機能は「RDS DATA DEMODULATOR IC」です。 |
部品番号 | UPC2539 |
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部品説明 | RDS DATA DEMODULATOR IC | ||
メーカ | NEC | ||
ロゴ | |||
このページの下部にプレビューとUPC2539ダウンロード(pdfファイル)リンクがあります。 Total 8 pages
PRELIMINARY DATA SHEET
Bi-CMOS INTEGRATED CIRCUIT
µPC2539
RDS DATA DEMODULATOR IC
The µPC2539 is data demodulator IC for FM receiver applying to Radio Data System in European countries and
Radio Broadcasting Data System in USA.
This IC carries out to extract 57kHz RDS signal from FM multiplex signal, demodulate data-stream, recover
bit-rate-clock, and discriminate SK signal in ARI system.
FEATURES
• Adjustment-free
• Built-in 57kHz band-pass-filter consist of switched capactiors.
• High sensitivity.
• Employing digital PLL.
• Small outline plastic package
ORDERING INFORMATION
Part Number
Package
µPC2539GS
24-pin plastic SOP (300 mil)
BLOCK DIAGRAM
24 23 22 21 20 19 18 17 16 15 14 13
COSTAS
BIPHASE
DECODER
DIFFERENTIAL
DECODER
57kHz BPF
SK DET
CLOCK
RECOVERY
OSC
1 2 3 4 5 6 7 8 9 10 11 12
The information in this document is subject to change without notice.
Document No. S11570EJ1V0DS00 (1st edition)
Date Published May 1996 P
Printed in Japan
©
1996
1 Page µPC2539
PIN FUNCTIONS
Pin no.
1
2
3
4
5
6
Pin name
VDD
TEST1
TEST2
CLK OUT
DATA OUT
RDS IND
7 SK IND
8 TEST3
9 TEST4
10 DGND
11 OSC IN
12 OSC OUT
13 TEST5
14 TEST6
15 OP.CTL
16 AGND
17 DSB IN
18 BPF OUT
19 REF
20 BPF IN
21 TEST7
22 TEST8
23 TEST9
24 VCC
Function
Power Supply for Digital Circuit
Pin for Test : Normally connect to GND.
Pin for Test : Normally be open.
Bit-Rate-Clock Output Pin
RDS Data Output Pin
RDS Idenrification Indicator : When RDS signal is detected, the output voltage becomes
to Low level.
SK Identification Indicator : When SK signal is detected, the output voltage becomes to
Low level.
Pin for Test : Normally connect to GND.
Pin for Test : Normally connect to GND.
GND for Digital Circuit
Oscillator Input Pin
Oscillator Output Pin
Pin for Test : Normally be open.
Pin for Test : Normally connect to GND.
Operation/Stop control Pin : High:Operation mode, Low:Stop mode
GND for Analog Circuit
DSB Demodulator Input Pin
Band-Pass-Filter Output Pin
Reference Voltage for BPF
Band-Pass-Filter Input Pin
Pin for Test : Normally connect to GND.
Pin for Test : Normally connect to GND.
Pin for Test : Normally connect to GND.
Power Supply for Analog Circuit
3
3Pages APPLICATION CIRCUIT ESAMPLE
VCC=+5V
INPUT
100 µF + 0.1 µF
4700pF
0.1 µF
4700pF
+5V
OPERATE
STOP
24 23 22 21 20 19 18 17 16 15 14 13
COSTAS
BIPHASE
DECODER
DIFFERENTIAL
DECODER
57kHz BPF
SK DET
CLOCK
RECOVERY
OSC
1 2 3 4 5 6 7 8 9 10 11 12
0.1 µF
+5V
RBDS 22pF
4.332MHz
*2
22pF
*1
RDS
µPC2539
Notes 1.
2.
Pin 7 does not have ability enough to drive LED directly because of internal serial resistor (10kΩ) shown
in following figure. In application for system with no ARI signal such as RBDS in USA, pin 7 is
recommended to be connected with VDD.
Crystal oscillation frequency tolerance : ±100ppm
The equivalent circuit in pin 7
S K detector block
10k Ω
7
PLL block
6
6 Page | |||
ページ | 合計 : 8 ページ | ||
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PDF ダウンロード | [ UPC2539 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 |
UPC2533 | AM TUNER FOR ELECTRONIC TUNING CAR RADIOS | NEC |
UPC2539 | RDS DATA DEMODULATOR IC | NEC |
UPC2539GS | RDS DATA DEMODULATOR IC | NEC |