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參數資料
| 型號： | EVAL-ADUC812QSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 16/57頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVALUATION FOR ADUC812 |
| 產品培訓模塊： | Process Control |
| 標準包裝： | 1 |
| 系列： | QuickStart™ 套件 |
| 類型： | MCU |
| 適用于相關產品： | ADuC812 |
| 所含物品： | 評估板、電源、纜線、軟件和說明文檔 |
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REV.
ADuC812
–23–
SOURCE/SINK CURRENT – mA
3
05
10
15
OUTPUT
VOLTAGE
–
V
2
1
0
Figure 21. Source and Sink Current Capability with
VREF = VDD = 3 V
To drive significant loads with the DAC outputs, external
buffering may be required, as illustrated in Figure 22.
9
ADuC812
10
Figure 22. Buffering the DAC Outputs
The DAC output buffer also features a high impedance disable
function. In the chip’s default power-on state, both DACs are
disabled, and their outputs are in a high impedance state (or
“three-state”) where they remain inactive until enabled in software.
This means that if a zero output is desired during power-up or
power-down transient conditions, then a pull-down resistor must
be added to each DAC output. Assuming this resistor is in place,
the DAC outputs will remain at ground potential whenever the
DAC is disabled. However, each DAC output will still spike
briefly when power is first applied to the chip, and again when
each DAC is first enabled in software. Typical scope shots of
these spikes are given in Figure 23 and Figure 24, respectively.
200 s/DIV
AVDD – 2V/DIV
DAC OUT – 500mV/DIV
Figure 23. DAC Output Spike at Chip Power-Up
s/DIV, 1V/DIV
5
Figure 24. DAC Output Spike at DAC Enable
F
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相關代理商/技術參數 |
參數描述 |
|---|---|
| EVAL-ADUC814MK | 制造商:Analog Devices 功能描述:Evaluation Board For Micro-Converter, Small Packag 12-Bit ADC With Embedded Flash MCU 制造商:Analog Devices 功能描述:MICROCONVEMICROCNVRTR, SMALL PACKAG 12-BIT ADC W/ EMBEDDED F - Bulk 制造商:Analog Devices 功能描述:Microcontroller Development Tool |
| EVAL-ADUC814QS | 制造商:Analog Devices 功能描述:8052 ADUC814 QUICKSTART DEV KIT |
| EVAL-ADUC814QS-U | 制造商:Analog Devices 功能描述:QUICK START DEVL SYST EVAL BOARD I.C. - Bulk |
| EVAL-ADUC814QSZ | 功能描述:KIT DEV FOR ADUC814 MICROCONVRTR RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 通用嵌入式開發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:QuickStart™ 套件 標準包裝:1 系列:PICDEM™ 類型:MCU 適用于相關產品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，線纜，元件，CD，PICkit 編程器 產品目錄頁面:659 (CN2011-ZH PDF) |
| EVAL-ADUC814QSZ | 制造商:Analog Devices 功能描述:EVAL BOARD, ADUC814 8052 CORE ANALOG MCU |
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