參數(shù)資料
型號(hào)： TLC4545IDRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
封裝： GREEN, PLASTIC, MS-012AA, SOIC-8
文件頁(yè)數(shù)： 4/26頁(yè)
文件大?。?/td> 652K
代理商： TLC4545IDRG4
TLC4541, TLC4545
SLAS293 DECEMBER 2001
12
www.ti.com
PRINCIPLES OF OPERATION
control and timing
device initialization/RESET cycle
The TLC4541/45 each require one RESET cycle after power-on for initialization in order to operate properly.
This RESET cycle is initiated by asserting the CS pin (pin 1) low for a minimum duration of at least one SCLK
falling edge but no more than 8 SCLK falling edges in length. The RESET cycle is terminated by asserting CS
high. If a valid RESET cycle is issued, the data presented on the SDO output during the following cycle is FF00h.
This output code is useful in determining when a valid reset/initialization has occurred.
The TLC4541 has separate CS and FS pins. In this case, it is also possible to initiate the RESET cycle by
asserting FS low if CS is already low. The RESET cycle can be terminated by either asserting CS high (as shown
in the first RESET cycle in Figure 14), or by asserting FS high ( as shown in the second RESET cycle in Figure
14), whichever happens first.
18 Falling SCLK Edges
ADC is Initialized
1
2
1
4
8
MSB
LSB3
1
2
8
1
4
16
LSB
1111111100000000
tcyc(reset)
SCLK
OR
tcyc(reset)
FS High for Valid Initialization
Normal CycleSample
and Convert
t(PWRDWN)
SDO DataReset of Previous cycle’s Sample
For TLC45xxLSB Presented on 16th Rising SCLK Edge
Normal CycleSample
and Convert
CS
FS
SDO
Figure 14. TLC4541/45 Initialization Timing
sampling
The converter sample time is 20 SCLKs in duration, beginning on the 5th SCLK received during an active signal
on the CS input (or FS input for the TLC4541.)
conversion
Each device completes a conversion in the following manner. The conversion is started after the 24th falling
SCLK edge. The CS input can be released at this point or at any time during the remainder of the conversion
cycle. The conversion takes a maximum of 2.94
s to complete. Enough time (for conversion) should be allowed
before the next falling edge on the CS input (or rising edge on the FS input for the TLC4541) so that no
conversion is terminated prematurely. If the conversion cycle is terminated early, the data presented on SDO
during the following cycle is FF00h. This predefined output code is helpful in determining if the cycle time is not
long enough to complete the conversion. The same code is also used to determine if a reset cycle is valid.
For all devices, the SDO data presented during a cycle is the result of the conversion of the sample taken during
the previous cycle. The output data format is shown in the following table.
SERIAL OUTPUT DATA FORMAT
MSB [D15:D2]
LSB [D1:D0]
TLC4541/45
Conversion Result (OD15OD2)
Conversion Result (OD1 OD0)
相關(guān)PDF資料
PDF描述
TLC4541IDR 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLC4545IDGK 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLC4545IDGKRG4 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLC4541IDRG4 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLC540INSG4 11-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLC-4C-0375 制造商:KATO/COILTHREAD 功能描述:
TLC-4C-0375W 制造商:KATO/COILTHREAD 功能描述:
TLC-4C-0500 制造商:KATO/COILTHREAD 功能描述:
TL-C5-140-30 制造商:Newport Electronics Inc 功能描述:5-DOT ROUND LABELS
TLC530FTU 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 NPN 330V 7A RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*