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參數(shù)資料
| 型號(hào)： | EVAL-ADUC831QSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 28/76頁 |
| 文件大小： | 0K |
| 描述： | KIT DEV FOR ADUC831 QUICK START |
| 產(chǎn)品培訓(xùn)模塊： | Process Control |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuickStart™ 套件 |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | ADuC831 |
| 所含物品： | 評估板、電源、纜線、軟件和說明文檔 |
| 產(chǎn)品目錄頁面： | 739 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | ADUC831BCPZ-ND - IC MCU 62K FLASH ADC/DAC 56LFCSP ADUC831BCPZ-REEL-ND - IC MCU 62K FLASH ADC/DAC 56LFCSP ADUC831BSZ-REEL-ND - IC MCU 62K FLASH ADC/DAC 52MQFP ADUC831BSZ-ND - IC ADC/DAC 12BIT W/MCU 52-MQFP |
| 其它名稱： | EVAL-ADUC831QS EVAL-ADUC831QS-ND |
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REV. 0
–34–
ADuC831
SOURCE/SINK CURRENT – mA
3
05
10
15
OUTPUT
VOLTAGE
–
V
2
1
0
DAC LOADED WITH 0000H
DAC LOADED WITH 0FFFH
Figure 24. Source and Sink Current Capability with
VREF = VDD = 3 V
To reduce the effects of the saturation of the output amplifier at
values close to ground and to give reduced offset and gain errors,
the internal buffer can be bypassed. This is done by setting the
DBUF bit in the CFG831 register. This allows a full rail-to-rail
output from the DAC which should then be buffered externally
using a dual supply op-amp in order to get a rail-to-rail output.
This external buffer should be located as near as physically
possible to the DAC output pin on the PCB. Note the unbuffed
mode only works in the 0 to VREF range.
To drive significant loads with the DAC outputs, external buff-
ering may be required (even with the internal buffer enabled),
as illustrated in Figure 25. A list of recommended op-amps is in
Table VI.
ADuC831
DAC0
DAC1
Figure 25. 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.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-ADUC832QS | 制造商:Analog Devices 功能描述:QUICK START DEVELOPMENT SYSTEM - Bulk 制造商:Analog Devices 功能描述:DEVELOPMENT KIT SYSTEM |
| EVAL-ADUC832QSZ | 功能描述:KIT DEV FOR ADUC832 QUICK START 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(biāo)準(zhǔn)包裝:1 系列:PICDEM™ 類型:MCU 適用于相關(guān)產(chǎn)品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，線纜，元件，CD，PICkit 編程器 產(chǎn)品目錄頁面:659 (CN2011-ZH PDF) |
| EVAL-ADUC834QS | 制造商:Analog Devices 功能描述:DATA ACQ SYS, MICROCNVRTR, DUAL 16BIT/24BIT - ADCS W/ EMBEDD - Bulk 制造商:Analog Devices 功能描述:8052 ADUC834 QUICKSTART DEV KIT |
| EVAL-ADUC834QSZ | 功能描述:KIT DEV QUICK START ADUC834 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(biāo)準(zhǔn)包裝:1 系列:PICDEM™ 類型:MCU 適用于相關(guān)產(chǎn)品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，線纜，元件，CD，PICkit 編程器 產(chǎn)品目錄頁面:659 (CN2011-ZH PDF) |
| EVAL-ADUC836QS | 制造商:Analog Devices 功能描述:MCU 8BIT 8052 CISC 62KB+4KB FLASH 3.6V 48LQFP - Bulk 制造商:Analog Devices 功能描述:KIT- ADUC836 DEV SYSTEM |
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