ADM1025ARQ-REEL ON Semiconductor, ADM1025ARQ-REEL Datasheet

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ADM1025ARQ-REEL

Manufacturer Part Number
ADM1025ARQ-REEL
Description
IC MONITOR SYS/VOLT 5CH 16QSOP
Manufacturer
ON Semiconductor
Datasheet

Specifications of ADM1025ARQ-REEL

Rohs Status
RoHS non-compliant
Applications
PC's, PDA's
Interface
I²C
Voltage - Supply
3 V ~ 5.5 V
Package / Case
16-QSOP
Mounting Type
Surface Mount
a
*Patent Pending.
Purchase of licensed I
Associated Companies conveys a license for the purchaser under the Philips I
Rights to use these components in an I
to the I
REV. C
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. 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 companies.
FEATURES
Up to 8 Measurement Channels
5 Inputs to Measure Supply Voltages
V
External Temperature Measurement with Remote Diode
On-Chip Temperature Sensor
5 Digital Inputs for VID Bits
Integrated 100 k
LDCM Support
I
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
2
CC
C
2
®
C Standard Specification as defined by Philips.
Monitored Internally
Compatible System Management Bus (SMBus)
2
C components of Analog Devices or one of its sublicensed
12V
IN
V
D–/NTI
2.5V
3.3V
CCPIN
/VID4
VID0
VID1
VID2
VID3
5V
Pull-Ups on VID Pins (ADM1025 Only)
V
D+
CC
IN
IN
IN
2
C system, provided that the system conforms
TEMPERATURE
BAND GAP
SENSOR
300k
PULL-UPS
100k
V
DD
FUNCTIONAL BLOCK DIAGRAM
POWER TO CHIP
ATTENUATORS
MULTIPLEXER
VID0–VID3
REGISTER
REGISTER
ANALOG
INPUT
VID4
AND
2
C Patent
REGISTER
REFERENCE
ADDRESS
POINTER
BAND GAP
GND
ADC
2.5V
PRODUCT DESCRIPTION
The ADM1025/ADM1025A is a complete system hardware
monitor for microprocessor-based systems, providing measure-
ment 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 V
dedicated to a remote temperature-sensing diode, and an on-chip
temperature sensor allows ambient temperature to be moni-
tored. The ADM1025A has open-drain VID inputs while the
ADM1025 has on-chip 100 kΩ pull-ups on the VID inputs.
Measured values and in/out of limit status can be read out via
an I
can be controlled and configured over the same serial bus. The
device also has a programmable INT output to indicate under-
voltage, overvoltage, and overtemperature conditions.
The ADM1025/ADM1025A’s 3.0 V to 5.5 V supply voltage
range, low supply current, and I
it ideal for a wide range of applications. These include hardware
monitoring and protection applications in personal computers,
electronic test equipment, and office electronics.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
2
C compatible serial System Management Bus. The device
CONFIGURATION
COMPARATORS
MEASUREMENT
SERIAL BUS
VALUE AND
REGISTERS
REGISTERS
INTERFACE
REGISTER
REGISTER
STATUS
OFFSET
ADM1025/ADM1025A
LIMIT
LIMIT
Hardware Monitor ASIC
ADM1025/
ADM1025A
© 2003 Analog Devices, Inc. All rights reserved.
2
C compatible interface make
ADD/RST/INT/NTO
SDA
SCL
CC
. One input (two pins) is
Low Cost PC
www.analog.com
*

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ADM1025ARQ-REEL Summary of contents

Page 1

FEATURES Measurement Channels 5 Inputs to Measure Supply Voltages V Monitored Internally CC External Temperature Measurement with Remote Diode On-Chip Temperature Sensor 5 Digital Inputs for VID Bits Integrated 100 k Pull-Ups on VID Pins (ADM1025 ...

Page 2

ADM1025/ADM1025A–SPECIFICATIONS P arameter POWER SUPPLY Supply Voltage Supply Current TEMPERATURE-TO-DIGITAL CONVERTER Internal Sensor Accuracy Resolution External Diode Sensor Accuracy Resolution Remote Sensor Source Current ANALOG-TO-DIGITAL CONVERTER (INCLUDING MUX AND ATTENUATORS) Total Unadjusted Error, TUE Differential Nonlinearity, ...

Page 3

... J Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C Lead Temperature, Soldering Vapor Phase 60 sec . . . . . . . . . . . . . . . . . . . . . . . . . . . 215°C Infrared 15 sec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200°C ESD Rating All Pins . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 V Temperature Model Range ADM1025ARQ 0°C to 100°C ADM1025AARQ 0°C to 100° LOW SCL t HD:DAT ...

Page 4

ADM1025/ADM1025A Pin No. Mnemonic Description 1 SDA Digital I/O. Serial bus bidirectional data. Open-drain output. 2 SCL Digital Input. Serial bus clock. 3 GND System Ground 4 V Power. Can be powered by 3.3 V standby power if monitoring in ...

Page 5

Typical Performance Characteristics– DXP TO GND 0 –10 DXP TO V (5V) CC –20 –30 –40 –50 –60 1 3.3 10 LEAKAGE RESISTANCE – M TPC 1. Temperature Error vs. PC Board Track Resistance ...

Page 6

ADM1025/ADM1025A 26.5 26.0 25 3.3V DD 25.0 24.5 24.0 23.5 23.0 22.5 –40 – TEMPERATURE – C TPC 7. Standby Current vs. Temperature GENERAL DESCRIPTION The ADM1025/ADM1025A is a complete system hardware monitor for ...

Page 7

If ADD is left open-circuit, the default address will be 0101110. ADD is sampled only after power-up, so any changes made will have no effect, unless power is cycled. The facility to make hardwired changes to A1 and A0 allows ...

Page 8

ADM1025/ADM1025A 1 SCL SDA START BY MASTER FRAME 1 SERIAL BUS ADDRESS BYTE Figure 2b. Writing to the Address Pointer Register Only 1 SCL SDA START BY MASTER FRAME 1 SERIAL BUS ...

Page 9

<0.062 <0.026 0.062–0.125 0.026–0.052 0.125–0.188 0.052–0.078 0.188–0.250 0.078–0.104 0.250–0.313 0.104–0.130 0.313–0.375 0.130–0.156 0.375–0.438 0.156–0.182 0.438–0.500 0.182–0.208 0.500–0.563 0.208–0.234 4.000–4.063 1.666–1.692 8.000–8.063 3.330–3.560 12.000–12.063 5.000–5.026 15.312–15.375 6.380–6.406 15.375–15.437 6.406–6.432 15.437–15.500 6.432–6.458 15.500–15.563 6.458–6.484 15.625–15.625 6.484–6.510 ...

Page 10

ADM1025/ADM1025A TEMPERATURE MEASUREMENT SYSTEM Internal Temperature Measurement The ADM1025/ADM1025A contains an on-chip band gap temperature sensor whose output is digitized by the on-chip ADC. The temperature data is stored in the Local Temperature Value Register (Address 27h). As both positive ...

Page 11

Try to minimize the number of copper/solder joints, which can cause thermocouple effects. Where copper/solder joints are used, make sure that they are in both the D+ and D– path and at the same temperature. Thermocouple effects should not ...

Page 12

ADM1025/ADM1025A Table IV. Controlling the Operation of INT Test Register Bit 1 Bit 0 Function 0 0 Interrupts Disabled 0 1 Thermal Interrupt Only 1 0 Voltage Interrupt Only 1 1 Voltage and Thermal Interrupts Note that Bit 7 of ...

Page 13

USING THE ADM1025/ADM1025A Power-On RESET When power is first applied, the ADM1025/ADM1025A performs a “power- on reset” on several of its registers. Registers whose power-on values are not shown have power-on conditions that are indeterminate. Value and limit registers are ...

Page 14

ADM1025/ADM1025A Table VII. Register 40h – Configuration Register Bit Name R/W Description 0 START Read/Write Logic 1 enables startup of monitor ASIC, and Logic 0 places the ASIC in standby mode. At startup, limit checking functions and scanning begins. Note, ...

Page 15

Table X. Register 47h – VID REGISTER (Power-On Default = 0000 (VID[3:0])) Bit Name R/W Description 0–3 VID[3:0] Read-Only The VID[3:0] inputs from Pentium/PRO power supplies to indicate the operating voltage (e.g., 1 2.9 V). 4–5 Reserved Read-Only ...

Page 16

ADM1025/ADM1025A 0.065 0.049 0.010 0.004 COPLANARITY Revision History Location 4/03—Data Sheet changed from REV REV. C. Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . ...

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