ADM1025A Datasheet PDF - ON Semiconductor
| Part Number | ADM1025A | |
| Description | Low Cost PC Hardware Monitor ASIC | |
| Manufacturers | ON Semiconductor | |
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ADM1025, ADM1025A
Product Preview
Low Cost PC
Hardware Monitor ASIC
The ADM1025/ADM1025A1 is a complete system hardware
monitor for microprocessor-based systems, providing measurement
and limit comparison of various system parameters. Five voltage
measurement inputs are provided for monitoring 2.5 V, 3.3 V, 5 V, and
12 V power supplies and the processor core voltage. The
ADM1025/ADM1025A can monitor a sixth power supply voltage by
measuring its own VCC. One input (two pins) is dedicated to a remote
temperature-sensing diode, and an onchip temperature sensor allows
ambient temperature to be monitored. The ADM1025A has
open-drain VID inputs while the ADM1025 has on-chip 100 kW
pull-ups on the VID inputs.
Measured values and in/out of limit status can be read out via an I2C
compatible serial System Management Bus. The device can be
controlled and configured over the same serial bus. The device also
has a programmable INT output to indicate undervoltage, overvoltage,
and overtemperature conditions.
The ADM1025/ADM1025A’s 3.0 V to 5.5 V supply voltage range,
low supply current, and I2C compatible interface make it ideal for a
wide range of applications. These include hardware monitoring and
protection applications in personal computers, electronic test
equipment, and office electronics.
Features
Up to 8 Measurement Channels
5 Inputs to Measure Supply Voltages
VCC Monitored Internally
External Temperature Measurement with Remote Diode
On-chip Temperature Sensor
5 Digital Inputs for VID Bits
Integrated 100 kW Pull-ups on VID Pins (ADM1025 Only)
LDCM Support
I2C Compatible System Management Bus (SMBus)
Programmable RST Output Pin
Programmable INT Output Pin
Configurable Offset for Internal/External Channel
Shutdown Mode to Minimize Power Consumption
Limit Comparison of All Monitored Values
Applications
Network Servers and Personal Computers
Microprocessor-based Office Equipment
Test Equipment and Measuring Instruments
http://onsemi.com
QSOP−16
CASE 492
PIN ASSIGNMENT
SDA 1
SCL 2
16
ADD/RST/
INT/NTO
15 VCCPIN
GND 3
14 2.5VIN
VCC 4
ADM1025/
ADM1025A
13 3.3VIN
VID0 5
Top View 12 5VIN
VID1 6 (Not To Scale) 11 12VIN/VID4
VID2 7
10 D+
VID3 8
9 D−/NTI
MARKING DIAGRAM
1025A
RQZ
#YYWW
1025ARQZ
#
YY
WW
= Special Device Code
= Pb-Free Package
= Year
= Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
Semiconductor Components Industries, LLC, 2012
August, 2012 − Rev. P6
1
Publication Order Number:
ADM1025/D
|
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SCL
SDA
tBUF
PS
t LOW
tR
tHD; STA
tHD; DAT
ADM1025, ADM1025A
tF
t HD; STA
tHIGH
tSU; DAT
tSU; STA
S
Figure 2. Serial Bus Timing Diagram
tSU; STO
P
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 3. Temperature Error vs. PC Board
Track Resistance
Figure 4. Temperature Error vs. Power Supply
Noise Frequency
Figure 5. Temperature Error vs. Common-mode
Noise Frequency
Figure 6. Pentium II) Temperature Measurement
vs. ADM1025/ADM1025A Reading
http://onsemi.com
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ADM1025A electronic component. |
| Information | Total 19 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ADM1025A.PDF Datasheet ] | |
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