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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)： | 4/8頁(yè) |
| 文件大?。?/td> | 173K |
| 代理商： | TDA7478D |
TDA7478
4/8
Figure 4. RDS timing diagram
3
OUTPUT TIMING
The RDS (1187.5Hz) output clock on RDCL line is synchronized to the incoming data. According to the internal
PLL lock condition data change can result on the falling or on the rising clock edge. (see Fig. 1)Whichever clock
edge is used by the decoder (rising or falling edge) the data will remain valid for 416.7
s after the clock transi-
tion.
4
OSCILLATOR CONTROLS (FSEL, OSEL)
Two different crystal frequencies can be used. The adaption of the internal clock divider to the external crystal
is achieved via the input pin FSEL. See the following table for reference:
Table 6.
A special mode is introduced to reduce EMI. With pin OSEL connected to GND the internal oscillator is switched
off and an external sinusoidal frequency could be applied on OSCIN. The peak to peak voltage of this signal
can be reduced down to 60mV.
In this mode the frequency selection via FSEL is still active.
Suggested values of C1 and C2 are shown in the following table:
Table 7.
Crystal
FSEL (pin configuration)
4.332MHz
8.664MHz
connected to GND or open
connected to Vs
Crystal
C1
C2
4.332MHz
8.664MHz
27pF
47pF
-
CLOCK
LINE
DATA
LINE
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 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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