- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄10685 > AD7780BRUZ (Analog Devices Inc)IC ADC 24BIT 1CH LP SD 16TSSOP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD7780BRUZ |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 7/16頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 24BIT 1CH LP SD 16TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Weigh Scale Introduction |
| 標(biāo)準(zhǔn)包裝： | 96 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 16.7 |
| 數(shù)據(jù)接口： | 串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 管件 |
| 輸入數(shù)目和類(lèi)型： | 1 個(gè)差分，雙極 |
| 產(chǎn)品目錄頁(yè)面： | 779 (CN2011-ZH PDF) |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)當(dāng)前第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
AD7780
Rev. A | Page 15 of 16
GROUNDING AND LAYOUT
Because the analog input and reference input of the ADC are
differential, most of the voltages in the analog modulator are
common-mode voltages. The excellent common-mode reject-
tion of the part removes common-mode noise on these inputs.
The digital filter provides rejection of broadband noise on the
power supply, except at integer multiples of the modulator sam-
pling frequency. The digital filter also removes noise from the
analog and reference inputs, provided that these noise sources
do not saturate the analog modulator. As a result, the AD7780
is more immune to noise interference than conventional high
resolution converters. However, because the resolution of the
AD7780 is so high, and the noise levels from the AD7780 are so
low, care must be taken with regard to grounding and layout.
The printed circuit board that houses the AD7780 should be
designed such that the analog and digital sections are separated
and confined to certain areas of the board. A minimum etch
technique is generally best for ground planes because it gives
the best shielding.
It is recommended that the GND pin of the AD7780 be tied
to the AGND plane of the system. In any layout, pay attention
to the flow of currents in the system and ensure that the return
paths for all currents are as close as possible to the paths that the
currents took to reach their destinations. Avoid forcing digital
currents to flow through the AGND sections of the layout.
The ground plane of the AD7780 should be allowed to run under
the AD7780 to prevent noise coupling. The power supply lines
to the AD7780 should use as wide a trace as possible to provide
low impedance paths and reduce the effects of glitches on the
power supply line. Fast switching signals such as clocks should
be shielded with digital ground to avoid radiating noise to other
sections of the board, and clock signals should never be run near
the analog inputs. Avoid crossover of digital and analog signals.
Traces on opposite sides of the board should run at right angles
to each other. This reduces the effects of feedthrough through
the board. A microstrip technique is by far the best, but it is not
always possible with a double-sided board. In this technique,
the component side of the board is dedicated to ground planes,
and the signals are placed on the solder side.
Good decoupling is important when using high resolution
ADCs. AVDD should be decoupled with 10 μF tantalum capa-
citors in parallel with 0.1 μF capacitors to GND. DVDD should
be decoupled with 10 μF tantalum capacitors in parallel with
0.1 μF capacitors to GND, with the system’s AGND to DGND
connection kept close to the AD7780. To achieve the best results
from these decoupling components, place them as close as possible
to the device, ideally right up against the device. All logic chips
should be decoupled with 0.1 μF ceramic capacitors to DGND.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1445IS | IC COMP W/REF LOWPWR QUAD 16SOIC |
| LTC1444IS | IC COMP W/REF LOWPWR QUAD 16SOIC |
| LTC2366CTS8#TRMPBF | IC ADC 12BIT 3MSPS TSOT23-8 |
| DS90LV031ATMTC/NOPB | IC LINE DRIVER QUAD CMOS 16TSSOP |
| LTC1444IN#PBF | IC COMP W/REF LOWPWR QUAD 16-DIP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7780BRUZ-REEL | 功能描述:IC ADC 24BIT 1CH LP SD 16TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:16 個(gè)單端，雙極；8 個(gè)差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7780BRZ | 功能描述:IC ADC 24BIT 1CH LP SD 14SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類(lèi)型:4 個(gè)單端，單極；2 個(gè)差分，單極 產(chǎn)品目錄頁(yè)面:1156 (CN2011-ZH PDF) 其它名稱(chēng):497-5435-6 |
| AD7780BRZ | 制造商:Analog Devices 功能描述:IC ADC 24BIT 16.7HZ SOIC-14 |
| AD7780BRZ-REEL | 功能描述:IC ADC 24BIT 1CH LP SD 14SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:16 個(gè)單端，雙極；8 個(gè)差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7781 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:20-Bit, Pin-Programmable, Low Power Sigma-Delta ADC |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。