- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄12014 > ADUC836BSZ (Analog Devices Inc)IC ADC DUAL 16BIT W/MCU 52-MQFP PDF資料下載
參數(shù)資料
| 型號(hào)： | ADUC836BSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 29/80頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC DUAL 16BIT W/MCU 52-MQFP |
| 產(chǎn)品培訓(xùn)模塊： | Process Control |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | MicroConverter® ADuC8xx |
| 核心處理器： | 8052 |
| 芯體尺寸： | 8-位 |
| 速度： | 12.58MHz |
| 連通性： | EBI/EMI，I²C，SPI，UART/USART |
| 外圍設(shè)備： | POR，PSM，PWM，溫度傳感器，WDT |
| 輸入/輸出數(shù)： | 34 |
| 程序存儲(chǔ)器容量： | 62KB（62K x 8） |
| 程序存儲(chǔ)器類型： | 閃存 |
| EEPROM 大小： | 4K x 8 |
| RAM 容量： | 2.25K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.25 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 7x16b; D/A 1x12b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 52-QFP |
| 包裝： | 托盤 |
| 產(chǎn)品目錄頁面： | 738 (CN2011-ZH PDF) |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁當(dāng)前第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁
ADuC836
–34–
ADuC836
–35–
VDD
VDD–50mV
VDD–100mV
100mV
50mV
0mV
000H
FFFH
Figure 22. Endpoint Nonlinearities Due to
Amplifier Saturation
Note that Figure 22 represents a transfer function in 0-to-VDD mode
only. In 0-to-VREF mode (with VREF < VDD), the lower nonlinearity
would be similar, but the upper portion of the transfer function
would follow the “ideal” line right to the end, showing no signs of
endpoint linearity errors.
The endpoint nonlinearities conceptually illustrated in Figure 22
get worse as a function of output loading. Most of the ADuC836
data sheet specifications assume a 10 k resistive load to ground
at the DAC output. As the output is forced to source or sink more
current, the nonlinear regions at the top or bottom (respectively)
of Figure 22 become larger.With larger current demands, this
can significantly limit output voltage swing. Figures 23 and 24
illustrate this behavior. It should be noted that the upper trace in
each of these figures is valid only for an output range selection of
0-to-AVDD. In 0-to-VREF mode, DAC loading will not cause high
side voltage drops as long as the reference voltage remains below
the upper trace in the corresponding figure. For example, if AVDD
= 3V andVREF = 2.5V, the high side voltage will not be affected by
loads less than 5 mA. But somewhere around 7 mA, the upper curve
in Figure 24 drops below 2.5 V (VREF), indicating that at these
higher currents, the output will not be capable of reaching VREF.
SOURCE/SINK CURRENT – mA
5
0
5
10
15
OUTPUT
VOLTAGE
–
V
4
3
2
1
0
DAC LOADED WITH 0000H
DAC LOADED WITH 0FFFH
Figure 23. Source and Sink Current Capability
with VREF = AVDD = 5 V
SOURCE/SINK CURRENT – mA
4
0
5
10
15
OUTPUT
VOLTAGE
–
V
3
1
0
DAC LOADED WITH 0000H
DAC LOADED WITH 0FFFH
Figure 24. Source and Sink Current Capability with
VREF = VDD = 3 V
For larger loads, the current drive capability may not be sufficient
To increase the source and sink current capability of the DAC, an
external buffer should be added, as shown in Figure 25.
ADuC836
12
Figure 25. Buffering the DAC Output
The DAC output buffer also features a high impedance disable func-
tion. In the chip’s default power-on state, the DAC is disabled and
its output is 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, a pull-down resistor must be
added to each DAC output. Assuming this resistor is in place, the
DAC output will remain at ground potential whenever the DAC
is disabled.
REV. A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADUC841BSZ62-5 | IC ADC/DAC 12BIT W/MCU 52-MQFP |
| VJ1825Y103JBGAT4X | CAP CER 10000PF 1KV 5% X7R 1825 |
| SCRU-01 | CONN RCPT IP68 USB A PNL MNT |
| VJ1825Y153JBGAT4X | CAP CER 0.015UF 1KV 5% X7R 1825 |
| VJ1825Y223JBGAT4X | CAP CER 0.022UF 1KV 5% X7R 1825 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADUC841 | 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU |
| ADUC841BCP32-5 | 制造商:Analog Devices 功能描述:MICROCONVERTER 1-CYCLE VERSION ADUC829 - Trays |
| ADUC841BCP62-3 | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 62KB Flash 3V 56-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 62KB FLASH 20MHZ 3.3V 56LFCSP - Bulk |
| ADUC841BCP62-5 | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 62KB Flash 5V 56-Pin LFCSP EP |
| ADUC841BCP8-3 | 制造商:Analog Devices 功能描述:MCU 8-bit ADuC8xx 8052 CISC 62KB Flash 3V 56-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 62KB FLASH 20MHZ 3.3V 56LFCSP - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。