參數(shù)資料
型號(hào)： 101-0814
廠(chǎng)商： Rabbit Semiconductor
文件頁(yè)數(shù)： 25/94頁(yè)
文件大?。?/td> 0K
描述： COMPUTER SNG BD BL1810 512K SRAM
標(biāo)準(zhǔn)包裝： 10
系列： SBC
模塊/板類(lèi)型： 單板計(jì)算機(jī)模塊
適用于相關(guān)產(chǎn)品： BL1810
User’s Manual
27
The resolution of the DA0 output depends on the smallest increment of time to change the
on/off time (the time between 5 V and 0 V). The Jackrabbit uses the Rabbit 2000’s Port D
control registers to clock out the signal at a timer timeout. The timer used is timer B.
Timer B has 10 bits of resolution so that the voltage can be varied in 1/1024 increments.
The resolution is thus about 3.88 mV for the DA0 output voltage range of 0 V to 3 V in the
12%–88% duty cycle.
An LM324 op amp, which can comfortably source 10 mA throughout the D/A converter
range, drives the D/A converter output. If the output voltage is above 1 V, the D/A con-
verter can comfortably sink 10 mA. Below 1 V, the D/A converter can only sink a maxi-
mum of 100 A.
The peak-to-peak ripple on DA0 is less than 3 mV. There is a way to get rid of the ripple
for very small periods of time. To do that, simply program the PWM port from a PWM
output to a high-impedance input. This will allow the capacitor to hold the voltage subject
only to leakage currents, which add up to about 1 A. This will cause the capacitor to
change voltage at the rate of 10 V per second, or 10 mV per millisecond. Practically, this
means that the PWM can stop for about 1 ms (seven 1024-count D/A converter cycles on
a 14.74 MHz processor clock) with a voltage movement of less than 10 mV.
To summarize, DA0 is provided uncalibrated, can be programmed with a resolution of
3.88 mV and a peak-to-peak ripple less than 3 mV over the range from 0.1 V to 2.8 V and
at 3.35 V. The settling time to within 3 mV is 54 ms.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
101-0815 功能描述:單板計(jì)算機(jī) SR9100 512K SRAM RoHS:否 制造商:Ampro By ADLINK 外觀尺寸:EPIC 處理器類(lèi)型:Intel Atom D510 頻率:1.66 GHz 存儲(chǔ)容量:2 GB (max) 存儲(chǔ)類(lèi)型:DDR2, L2 Cache 接口類(lèi)型:Ethernet, PS/2, SATA, Serial, USB 工作電源電壓:5 V, 12 V 功耗:13 W 最大工作溫度:+ 70 C 尺寸:165.1 mm x 114.3 mm
101-0816 功能描述:KIT DEV RABBITCORE TCP/IP 2000 RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 過(guò)時(shí)/停產(chǎn)零件編號(hào) 系列:* 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線(xiàn)、軟件、數(shù)據(jù)表和用戶(hù)手冊(cè) 其它名稱(chēng):520-1035
101-0817 功能描述:單板計(jì)算機(jī) BL2030 512K SRAM RoHS:否 制造商:Ampro By ADLINK 外觀尺寸:EPIC 處理器類(lèi)型:Intel Atom D510 頻率:1.66 GHz 存儲(chǔ)容量:2 GB (max) 存儲(chǔ)類(lèi)型:DDR2, L2 Cache 接口類(lèi)型:Ethernet, PS/2, SATA, Serial, USB 工作電源電壓:5 V, 12 V 功耗:13 W 最大工作溫度:+ 70 C 尺寸:165.1 mm x 114.3 mm
101-0818 功能描述:單板計(jì)算機(jī) BL2100 Fric Lk 512K RoHS:否 制造商:Ampro By ADLINK 外觀尺寸:EPIC 處理器類(lèi)型:Intel Atom D510 頻率:1.66 GHz 存儲(chǔ)容量:2 GB (max) 存儲(chǔ)類(lèi)型:DDR2, L2 Cache 接口類(lèi)型:Ethernet, PS/2, SATA, Serial, USB 工作電源電壓:5 V, 12 V 功耗:13 W 最大工作溫度:+ 70 C 尺寸:165.1 mm x 114.3 mm
101-0820 功能描述:COMPUTER SGL-BD BL2000 SRAM/FLSH RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器或微處理器模塊 系列:SBC 產(chǎn)品目錄繪圖:DLP-245SY-G 標(biāo)準(zhǔn)包裝:1 系列:USB 模塊/板類(lèi)型:開(kāi)發(fā)板 適用于相關(guān)產(chǎn)品:USB 其它名稱(chēng):813-1006
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