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參數(shù)資料
| 型號(hào)： | AD7934 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer |
| 中文描述： | 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | TSSOP-28 |
| 文件頁數(shù)： | 30/32頁 |
| 文件大小： | 1253K |
| 代理商： | AD7934 |
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AD7933/AD7934
Preliminary Technical Data
APPLICATION HINTS
GROUNDING AND LAYOUT
The printed circuit board that houses the AD7933/AD7934
should be designed so that the analog and digital sections are
separated and confined to certain areas of the board. This
facilitates the use of ground planes that can be easily separated.
A minimum etch technique is generally best for ground planes
as it gives the best shielding. Digital and analog ground planes
should be joined in only one place, and the connection should
be a star ground point established as close to the ground pins on
the AD7933/AD7934 as possible. Avoid running digital lines
under the device as this couples noise onto the die. The analog
ground plane should be allowed to run under the
AD7933/AD7934 to avoid noise coupling. The power supply
lines to the AD7933/AD7934 should use as large 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 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 is not always
possible with a double-sided board.
In this technique, the component side of the board is dedicated
to ground planes, while signals are placed on the solder side.
Good decoupling is also important. All analog supplies should
be decoupled with 10 μF tantalum capacitors in parallel with
0.1 μF capacitors to GND. To achieve the best from these
decoupling components, they must be placed as close as
possible to the device.
EVALUATING THE AD7933/AD7934
PERFORMANCE
The recommended layout for the AD7933/AD7934 is outlined
in the evaluation board documentation. The evaluation board
package includes a fully assembled and tested evaluation board,
documentation, and software for controlling the board from the
PC via the evaluation board controller. The evaluation board
controller can be used in conjunction with the
AD7933/AD7934 evaluation board, as well as many other ADI
evaluation boards ending in the CB designator, to
demonstrate/evaluate the ac and dc performance of the
AD7933/AD7934.
The software allows the user to perform ac (fast Fourier
transform) and dc (histogram of codes) tests on the
AD7933/AD7934. The software and documentation are on the
CD that ships with the evaluation board.
Rev. PrG | Page 30 of 32
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7934BRU | 4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer |
| AD7933 | 4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer |
| AD7933BRU | 4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer |
| AD7937 | LC2MOS 8+4 Loading Dual 12-Bit DAC |
| AD7937AR | LC2MOS 8+4 Loading Dual 12-Bit DAC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7934-6 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 625 kSPS, 12-Bit Parallel ADC with a Sequencer |
| AD7934BRU | 功能描述:IC ADC 12BIT 4CH 1.5MSPS 28TSSOP RoHS:否 類別: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:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 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(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
| AD7934BRU-6 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD7934BRU-6REEL7 | 制造商:Analog Devices 功能描述:ADC SGL SAR 625KSPS 12-BIT PARALLEL 28TSSOP - Tape and Reel |
| AD7934BRU-REEL | 功能描述:IC ADC 12BIT 4CH 1.5MSPS 28TSSOP RoHS:否 類別: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:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 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(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
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