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| 型號： | ADM1191 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Digital Power Monitor with Convert Pin and ALERTB O |
| 中文描述： | 數(shù)字電源監(jiān)視器轉(zhuǎn)換引腳和ALERTB ? |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 269K |
| 代理商： | ADM1191 |
Digital Power Monitor
with Convert Pin and ALERTB Output
ADM1191
FEATURES
Powered from 3.15 V to 26 V
Precision current sense amplifier
Precision voltage input
12-bit ADC for current and voltage readback
Convert pin (CONV) for commanding an ADC read
SETV input for setting overcurrent alert threshold
ALERTB output provides an overcurrent interrupt
I
2
C fast mode-compliant interface (400 kHz maximum)
Two address pins allow 16 devices on the same bus
10-lead MSOP
Rev. 0
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
APPLICATIONS
Power monitoring/power budgeting
Central office equipment
Telecommunication and data communication equipment
PCs/servers
GENERAL DESCRIPTION
The ADM1191 is an integrated current sense amplifier that
offers digital current and voltage monitoring via an on-chip,
12-bit analog-to-digital converter (ADC), communicated
through an I
2
C interface.
An internal current sense amplifier senses voltage across the sense
resistor in the power path via the VCC pin and the SENSE pin.
A 12-bit ADC can measure the current seen in the sense
resistor, as well as the supply voltage on the VCC pin.
An industry-standard I
2
C interface allows a controller to read
current and voltage data from the ADC. Measurements can be
initiated by an I
2
C command or via the convert (CONV) pin.
The CONV pin is especially useful for synchronizing reads on
multiple ADM1191 devices. Alternatively, the ADC can run
continuously, and the user can read the latest conversion data
whenever it is required. Up to 16 unique I
2
C addresses can be
created, depending on the way the A0 pin and the A1 pin are
connected.
A SETV pin is also included. A voltage applied to this pin is
internally compared to the output voltage on the current sense
amplifier. The output of the SETV comparator asserts when the
current sense amplifier ouput exceeds the SETV voltage. When
this event occurs, the ALERTB output asserts.
FUNCTIONAL BLOCK DIAGRAM
V
I
0
1
ADM1191
SENSE
SETV
VCC
CONV
MUX
I
2
C
ALERT
GND
COMPARATOR
CURRENT
SENSE
AMPLIFIER
A
SDA
SCL
A1
A0
ALERTB
0
12-BIT
ADC
Figure 1.
R
SENSE
P = VI
CONTROLLER
ADM1191
SENSE
VCC
SDA
SCL
SDA
SCL
GND
ALERTB
CONV
CONV
A0
A1
3.15V TO 26V
SETV
INTERRUPT
0
Figure 2. Applications Diagram
The ALERTB output can be used as a flag to warn a micro-
controller or field programmable gate array (FPGA) of an
overcurrent condition. ALERTB outputs of multiple ADM1191
devices can be tied together and used as a combined alert.
The ADM1191 is packaged in a 10-lead MSOP.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADM1191_08 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Digital Power Monitor with Convert Pin and ALERTB Output |
| ADM1191-2ARMZ-R7 | 功能描述:IC PWR MONITOR DGTL ALERT 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 應(yīng)用:熱電冷卻器 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.173"，4.40mm 寬）裸露焊盤 供應(yīng)商設(shè)備封裝:28-TSSOP 裸露焊盤 包裝:管件 產(chǎn)品目錄頁面:1410 (CN2011-ZH PDF) |
| ADM1191-2ARMZ-R71 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Digital Power Monitor with Convert Pin and ALERTB O |
| ADM1192 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Digital Power Monitor with Clear Pin and ALERT Output |
| ADM1192_08 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Digital Power Monitor with Clear Pin and ALERT Output |
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