- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄11201 > ADUC824BCPZ (Analog Devices Inc)IC MCU 8K FLASH ADC/DAC 56LFCSP PDF資料下載
參數(shù)資料
| 型號： | ADUC824BCPZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 30/68頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU 8K FLASH ADC/DAC 56LFCSP |
| 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，溫度傳感器，WDT |
| 輸入/輸出數(shù)： | 34 |
| 程序存儲器容量： | 8KB（8K x 8） |
| 程序存儲器類型： | 閃存 |
| EEPROM 大?。?/td> | 640 x 8 |
| RAM 容量： | 256 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.25 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 3x16b，4x24b; D/A 1x12b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 56-VFQFN 裸露焊盤，CSP |
| 包裝： | 托盤 |
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頁第29頁當(dāng)前第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
REV. B
ADuC824
–36–
Figure 22 shows the frequency response of the ADC chan-
nel at the default SF word of 69 dec or 45 hex, yielding an
overall output update rate of just under 20 Hz.
It should be noted that this frequency response allows frequency
components higher than the ADC Nyquist frequency to pass
through the ADC, in some cases without significant attenuation.
These components may, therefore, be aliased and appear in-band
after the sampling process.
It should also be noted that rejection of mains-related frequency
components, i.e., 50 Hz and 60 Hz, is seen to be at level of
>65 dB at 50 Hz and >100 dB at 60 Hz. This confirms the
data sheet specifications for 50 Hz/60 Hz Normal Mode Rejec-
tion (NMR) at a 20 Hz update rate.
0
20
30
50
70
80
90
100
110
FREQUENCY – Hz
GAIN
–
dB
0
–20
–40
–70
–80
–90
–100
–110
–120
10
40
60
–10
–30
–60
–50
Figure 22. Filter Response, SF = 69 dec
The response of the filter, however, will change with SF word as
can be seen in Figure 23, which shows >90 dB NMR at 50 Hz
and >70 dB NMR at 60 Hz when SF = 255 dec.
0
20
30
50
70
80
90
100
FREQUENCY – Hz
GAIN
–
dB
0
–20
–40
–70
–80
–90
–100
–110
–120
10
40
60
–10
–30
–60
–50
Figure 23. Filter Response, SF = 255 dec
Figures 24 and 25 show the NMR for 50 Hz and 60 Hz across
the full range of SF word, i.e., SF = 13 dec to SF = 255 dec.
10
50
70
110
150 170 190 210
SF – Decimal
GAIN
–
dB
0
–20
–40
–70
–80
–90
–100
–110
–120
30
90
130
–10
–30
–60
–50
230 250
Figure 24. 50 Hz Normal Mode Rejection vs. SF
10
50
70
110
150 170 190 210
SF – Decimal
GAIN
–
dB
0
–20
–40
–70
–80
–90
–100
–110
–120
30
90
130
–10
–30
–60
–50
230 250
Figure 25. 60 Hz Normal Mode Rejection vs. SF
ADC Chopping
Both ADCs on the ADuC824 implement a chopping scheme
whereby the ADC repeatability reverses its inputs. The deci-
mated digital output words from the Sinc
3 filters therefore have a
positive offset and negative offset term included.
As a result, a final summing stage is included in each ADC so that
each output word from the filter is summed and averaged with the
previous filter output to produce a new valid output result to be
written to the ADC data SFRs. In this way, while the ADC
throughput or update rate is as discussed earlier and illustrated
in Table VII, the full settling time through the ADC (or the time
to a first conversion result), will actually be given by 2
× tADC.
The chopping scheme incorporated in the ADuC824 ADC results
in excellent dc offset and offset drift specifications and is
extremely beneficial in applications where drift, noise rejection,
and optimum EMI rejection are important factors.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IDTQS4A215Q1G8 | IC MUX/DEMUX DUAL 4X1 48QVSOP |
| ADUC7025BCPZ62 | IC MCU FLSH 62K ANLG I/O 64LFCSP |
| IDTHS231P16NDG | IC SWITCH DUAL SPST 16QFN |
| IDTHS231P16NDGI8 | IC SWITCH DUAL SPST 16QFN |
| VE-B4P-IW | CONVERTER MOD DC/DC 13.8V 100W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADUC824BS | 制造商:Analog Devices 功能描述:MCU 8-bit ADuC8xx 8052 CISC 8KB Flash 3.3V/5V 52-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 8KB FLASH 12.58MHZ 3.3/5V 52MQFP - Bulk 制造商:Analog Devices 功能描述:8BIT MCU +24BIT ADC LQFP52 824 |
| ADUC824BS-DEN | 制造商:Analog Devices 功能描述: |
| ADUC824BS-REEL | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 8KB Flash 3.3V/5V 52-Pin MQFP T/R 制造商:Analog Devices 功能描述:24BIT ADC/EMBEDDED 8BIT MCU+FLASH MEMORY - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:24BIT ADC/EMBEDDED 8BIT MCU+FLASH MEMORY - Tape and Reel |
| ADUC824BSZ | 功能描述:IC MCU 8K 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:250 系列:LPC11Uxx 核心處理器:ARM? Cortex?-M0 芯體尺寸:32-位 速度:50MHz 連通性:I²C，Microwire，SPI，SSI，SSP，UART/USART，USB 外圍設(shè)備:欠壓檢測/復(fù)位，POR，WDT 輸入/輸出數(shù):40 程序存儲器容量:96KB（96K x 8） 程序存儲器類型:閃存 EEPROM 大小:4K x 8 RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):1.8 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:48-LQFP 包裝:托盤 其它名稱:568-9587 |
| ADUC824BSZ-DEN | 功能描述:8052 MicroConverter? ADuC8xx Microcontroller IC 8-Bit 12.58MHz 8KB (8K x 8) FLASH 制造商:analog devices inc. 系列:MicroConverter? ADuC8xx 包裝:- 零件狀態(tài):上次購買時(shí)間 核心處理器:8052 核心尺寸:8-位 速度:12.58MHz 連接性:EBI/EMI，I2C，SPI，UART/USART 外設(shè):POR，PSM，溫度傳感器，WDT I/O 數(shù):34 程序存儲容量:8KB（8K x 8） 程序存儲器類型:閃存 EEPROM 容量:640 x 8 RAM 容量:256 x 8 電壓 - 電源（Vcc/Vdd）:2.7 V ~ 5.25 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 3x16b，4x24b；D/A 1x12b 振蕩器類型:內(nèi)部 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:- 供應(yīng)商器件封裝:- 標(biāo)準(zhǔn)包裝:1 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。