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參數(shù)資料
型號： ADUC831BS
廠商： ANALOG DEVICES INC
元件分類： 微控制器/微處理器
英文描述： MicroConverter, 12-Bit ADCs and DACs with Embedded 62 kBytes Flash MCU
中文描述： 8-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, PQFP52
封裝： PLASTIC, MQFP-52
文件頁數(shù)： 34/76頁
文件大小： 1211K
代理商： ADUC831BS
REV. 0
–34–
ADuC831
SOURCE/SINK CURRENT – mA
3
0
5
10
15
O
2
1
0
DAC LOADED WITH 0000H
DAC LOADED WITH 0FFFH
Figure 24. Source and Sink Current Capability with
V
REF
= V
DD
= 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 V
REF
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
ADUC831BS-REEL 制造商:Analog Devices 功能描述:MCU 8-bit ADuC8xx 8052 CISC 62KB Flash 3.3V/5V 52-Pin MQFP T/R
ADUC831BSZ 功能描述:IC ADC/DAC 12BIT W/MCU 52-MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
ADUC831BSZ-REEL 功能描述:IC MCU 62K FLASH ADC/DAC 52MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設(shè)備:欠壓檢測/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲器容量:4KB（4K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND
ADUC832 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter, 12-Bit ADCs and DACs with Embedded 62 kBytes Flash MCU
ADUC832BCP 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 62KB Flash 3V/5V 56-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 62KB FLASH 16.78MHZ 3.3/5V 56LFCSP - Bulk
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