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參數(shù)資料
| 型號(hào)： | TDA7478D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| 封裝： | SOP-16 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大小： | 173K |
| 代理商： | TDA7478D |
1/8
TDA7478
November 2004
1
FEATURES
■ VERY HIGH RDS DEMODULATION QUALITY
WITH IMPROVED DIGITAL SIGNAL
PROCESSING
■ HIGH PERFORMANCE, 57KHz BANDPASS
FILTER (8th ORDER)
■ FILTER ADJUSTMENT FREE AND WITHOUT
EXTERNAL COMPONENTS
■ PURELY DIGITAL RDS DEMODULATION
WITHOUT EXTERNAL COMPONENTS
■ RDS SIGNAL QUALITY OUTPUT
■ 4.332MHz CRYSTAL OSCILLATOR(8.664MHz
OPTIONAL)
■ LOW NOISE CMOS TECHNOLOGY
■ LOW RADIATION
2
DESCRIPTION
The TDA7478 recovers the additional inaudible RDS
information which is transmitted by FM radio broad-
casting stations and operates in accordance with the
EBU (European Broadcasting Union) specifications.
The device is made up of two sections: a cascaded
antialiasing + switched capacitors 8th bandpass filter
for precise RDS band selection and a demodulating
section that performs the extraction od RDS data
stream (RDDA) and clock (RDCL), to be further pro-
cessed by a suitable RDS decoder.
Output for RDS signal quality is also present.
SINGLE CHIP RDS DEMODULATOR
Figure 2. Block Diagram
2nd ORDER
ANTIALIASING
FILTER
8th ORDER
SC-BANDPASS
FILTER
MPX
4
270pF
-
+
8
FILOUT
12
VS
3
VREF
100nF
10
F
OSCILLATOR &
DIVIDER
57KHz PLL
POLARITY
BIPHASE DEC.
INTEGRAL
BIPHASE DEC.
1187.5Hz
PLL
MUX
0
1
DIFF. DECODER
TEST LOGIC
QUAL DET.
6
GND
11
EXTRES
14
13
5
9
16
7
1
D03AU1490
TM
10
RDDA
2
QUAL
N.U.
RDCL
FSEL
OSEL
OSCOUT
OSCIN
4.332MHz
C2 47pF
C1 27pF
15
T57
Figure 1. Packages
Table 1. Order Codes
Part Number
Package
TDA7478D
SO16
E-TDA7478AD
TSSOP16
SO16
TSSOP16
Rev. 2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7479 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SINGLE CHIP RDS DEMODULATOR FILTER |
| TDA7479_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SINGLE CHIP RDS DEMODULATOR + FILTER |
| TDA7479_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Single chip RDS demodulator filter |
| TDA7479AD | 功能描述:射頻無(wú)線雜項(xiàng) INFOTAINMENT SIGNAL RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| TDA7479ADTR | 功能描述:射頻無(wú)線雜項(xiàng) SINGLE CHIP DEMOD RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
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