- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10064 > AD7875KRZ (Analog Devices Inc)IC ADC 12BIT SAMPLING 5V 24SOIC PDF資料下載
參數(shù)資料
| 型號： | AD7875KRZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 15/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT SAMPLING 5V 24SOIC |
| 產(chǎn)品變化通告： | Conversion Time Change |
| 標準包裝： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 100k |
| 數(shù)據(jù)接口： | 串行，并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 95mW |
| 電壓電源： | 雙 ± |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 24-SOIC W |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 1 個單端，單極 |
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頁當前第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
AD7870/AD7875/AD7876
Rev. C | Page 22 of 2
8
APPLICATIONS INFORMATION
Good printed circuit board (PCB) layout is as important as
the overall circuit design itself in achieving high speed analog-
to-digital performance. The designer has to be conscious of
noise both in the ADC itself and in the preceding analog
circuitry. Switching mode power supplies are not recommended
because the switching spikes feed through to the comparator
causing noisy code transitions. Other causes of concern are
ground loops and digital feedthrough from microprocessors.
These are factors which influence any ADC, and a proper
PCB layout which minimizes these effects is essential for best
performance.
LAYOUT HINTS
Ensure that the layout for the printed circuit board has the
digital and analog signal lines separated as much as possible.
Take care not to run any digital track alongside an analog signal
track. Guard (screen) the analog input with AGND.
Establish a single point analog ground (star ground) separate
from the logic system ground at the AGND pin or as close
as possible to the ADC. Connect all other grounds and the
AD7870/AD7875/AD7876 DGND to this single analog
ground point. Do not connect any other digital grounds to
this analog ground point.
Low impedance analog and digital power supply common
returns are essential to low noise operation of the ADC, so
make the foil width for these tracks as wide as possible. The
use of ground planes minimizes impedance paths and also
guards the analog circuitry from digital noise. The circuit
layout has both analog and digital ground planes which are
kept separated and only joined together at the AD7870/
AD7875/AD7876 AGND pin.
NOISE
Keep the input signal leads to VIN and signal return leads from
AGND as short as possible to minimize input noise coupling.
In applications where this is not possible, use a shielded cable
between the source and the ADC. Reduce the ground circuit
impedance as much as possible since any potential difference
in grounds between the signal source and the ADC appears as
an error voltage in series with the input signal.
相關PDF資料 |
PDF描述 |
|---|---|
| LT1138ACSW#TRPBF | IC 5DRV/3RCV RS232 5V 28-SOIC |
| AD9613BCPZRL7-170 | IC ADC 12BIT SRL 170MSPS 64LFCSP |
| IDT72225LB25PFI | IC FIFO 1024X18 SYNC 25NS 64TQFP |
| LT1138ACSW#TR | IC TXRX 5V RS232 LP CAPS 28SOIC |
| IDT72V241L20J | IC FIFO SYNC 4KX9 20NS 32PLCC |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD7875LN | 制造商:Analog Devices 功能描述:ADC Single SAR 100ksps 12-bit Parallel/Serial 24-Pin PDIP |
| AD7875LNZ | 功能描述:IC ADC 12BIT SAMPLING 5V 24-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類型:- |
| AD7875LNZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs |
| AD7875LP | 制造商:Rochester Electronics LLC 功能描述:12 BIT SAMPLING ADC IC - Bulk 制造商:Analog Devices 功能描述: |
| AD7875LP-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs |
發(fā)布緊急采購，3分鐘左右您將得到回復。