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| 型號： | EVAL-AD7401EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Isolated Sigma-Delta Modulator |
| 中文描述： | 隔離式Σ-Δ調(diào)制器 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 339K |
| 代理商： | EVAL-AD7401EB |
Isolated Sigma-Delta Modulator
AD7401
FEATURES
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2006 Analog Devices, Inc. All rights reserved.
www.analog.com
1
Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents
pending.
20 MHz maximum external clock rate
Second-order modulator
16 bits no missing codes
±2 LSB INL typical at 16 bits
3.5 μV/°C maximum offset drift
On-board digital isolator
On-board reference
Low power operation: 20 mA maximum at 5.25 V
40°C to +105°C operating range
16-lead SOIC package
AD7400
, internal clock version
Safety and regulatory approvals
UL recognition
3750 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
VDE Certificate of Conformity
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000
V
IORM
= 891 V peak
APPLICATIONS
AC motor controls
Data acquisition systems
A/D + opto-isolator replacements
GENERAL DESCRIPTION
The AD7401
1
is a second-order, Σ-Δ modulator that converts
an analog input signal into a high speed, 1-bit data stream with
on-chip digital isolation based on Analog Devices, Inc.
i
Coupler technology. The AD7401 operates from a 5 V power
supply and accepts a differential input signal of ±200 mV
(±320 mV full scale). The analog input is continuously sampled
by the analog modulator, eliminating the need for external
sample-and-hold circuitry. The input information is contained
in the output stream as a density of ones with a data rate up to
20 MHz. The original information can be reconstructed with an
appropriate digital filter. The serial I/O can use a 5 V or a 3 V
supply (V
DD2
).
The serial interface is digitally isolated. High speed CMOS,
combined with monolithic air core transformer technology,
means the on-chip isolation provides outstanding performance
characteristics, superior to alternatives such as optocoupler
devices. The part contains an on-chip reference. The AD7401
is offered in a 16-lead SOIC and has an operating temperature
range of 40°C to +105°C.
FUNCTIONAL BLOCK DIAGRAM
V
IN
+
V
DD1
V
DD2
V
IN
–
Σ
-
Δ
ADC
CONTROL LOGIC
AD7401
BUF
T/H
REF
WATCHDOG
GND
1
GND
2
MDAT
MCLKIN
DECODE
ENCODE
DECODE
ENCODE
UPDATE
WATCHDOG
UPDATE
0
Figure 1.
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參數(shù)描述 |
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| EVAL-AD7401EDZ | 功能描述:BOARD EVALUATION FOR AD7401 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:iCoupler® 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| EVAL-AD74111EBZ | 功能描述:BOARD EVAL FOR AD74111 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源 |
| EVAL-AD74122EB-U1 | 制造商:Analog Devices 功能描述:- Bulk |
| EVAL-AD7414/15EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:【0.5C Accurate, 10-Bit Digital Temperature Sensors in SOT-23 |
| EVAL-AD7414/15EBZ | 功能描述:BOARD EVALUATION FOR AD7414/15 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 傳感器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
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