ADM1032ARMZ-2RL7 Equivalent & Substitute Parts

Part Overview

The ADM1032ARMZ-2RL7 is a digital temperature sensor manufactured by onsemi, designed for local and remote temperature monitoring across 0°C to 100°C (local) and 0°C to 120°C (remote) operating ranges. This component features SMBus output, 7-bit resolution, and programmable limit functionality in an 8-MSOP surface mount package. The product is currently obsolete, making equivalent substitute parts necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	ADM1032ARMZ-2RL7
Manufacturer	onsemi
Category	Temperature Sensors
Sensor Type	Digital, Local/Remote
Sensing Temperature - Local	0°C ~ 100°C
Sensing Temperature - Remote	0°C ~ 120°C
Output Type	SMBus
Voltage - Supply	3V ~ 5.5V
Resolution	7 b
Accuracy	±3°C (0°C ~ 100°C)
Features	Output Switch, Programmable Limit, Standby Mode
Mounting Type	Surface Mount
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the ADM1032ARMZ-2RL7 are selected based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Sensor Type: Digital, Local/Remote temperature monitoring capability
Output Type: SMBus protocol support
Package / Case: 8-MSOP or 8-VSSOP surface mount configuration
Mounting Type: Surface Mount
Supply Voltage Range: Overlap with 3V ~ 5.5V specification
Temperature Sensing Range: Coverage of at least 0°C ~ 100°C local sensing capability

Secondary Considerations:

Resolution: 7-bit or higher
Accuracy: ±3°C or better
Features: Output Switch and Programmable Limit functionality
MSL Rating: 1 or 2 (Unlimited or 1 Year)

Substitute parts are grouped into two categories based on their operational temperature ranges and accuracy specifications relative to the original ADM1032ARMZ-2RL7.

Parameter Comparison

Part Number	Manufacturer	Sensor Type	Local Temp Range	Remote Temp Range	Output Type	Supply Voltage	Resolution	Accuracy	Package	Product Status
ADM1032ARMZ-2RL7	onsemi	Digital, Local/Remote	0°C ~ 100°C	0°C ~ 120°C	SMBus	3V ~ 5.5V	7 b	±3°C	8-MSOP	Obsolete
EMC1422-2-ACZL-TR	Microchip Technology	Digital, Local/Remote	-40°C ~ 125°C	-64°C ~ 191°C	SMBus	3V ~ 3.6V	11 b	±1°C (±2°C)	8-MSOP	Active
LM86CIMM/NOPB	Texas Instruments	Digital, Local/Remote	0°C ~ 85°C	0°C ~ 85°C	SMBus	3V ~ 3.6V	7 b (Local), 10 b (Remote)	±3°C	8-VSSOP	Obsolete
LM86CIMMX/NOPB	Texas Instruments	Digital, Local/Remote	0°C ~ 85°C	0°C ~ 85°C	SMBus	3V ~ 3.6V	7 b (Local), 10 b (Remote)	±3°C	8-VSSOP	Active
LM90CIMM/NOPB	National Semiconductor	Digital, Local/Remote	0°C ~ 85°C	0°C ~ 85°C	SMBus	3V ~ 3.6V	7 b (Local), 10 b (Remote)	±4°C	8-VSSOP	Active
LM90CIMMX/NOPB	National Semiconductor	Digital, Local/Remote	0°C ~ 85°C	0°C ~ 85°C	SMBus	3V ~ 3.6V	7 b (Local), 10 b (Remote)	±4°C	8-VSSOP	Active
LM95235CIMMX/NOPB	Texas Instruments	Digital, Local/Remote	0°C ~ 90°C	0°C ~ 90°C	SMBus	3V ~ 3.6V	10 b (Local), 12 b (Remote)	±2°C	8-VSSOP	Active
LM95235DIMMX/NOPB	Texas Instruments	Digital, Local/Remote	-40°C ~ 90°C	-40°C ~ 90°C	SMBus	3V ~ 3.6V	10 b	±2°C (±6°C)	8-VSSOP	Active
LM95235EIMM/NOPB	National Semiconductor	Digital, Local/Remote	-40°C ~ 90°C	-40°C ~ 90°C	SMBus	3V ~ 3.6V	10 b (Local), 12 b (Remote)	±2°C (±6°C)	8-VSSOP	Active
LM95235QEIMM/NOPB	Texas Instruments	Digital, Local/Remote	-40°C ~ 85°C	-40°C ~ 85°C	SMBus	3V ~ 3.6V	10 b (Local), 12 b (Remote)	±2°C (±6°C)	8-VSSOP	Active
TMP411ADGKT	Texas Instruments	Digital, Local/Remote	-40°C ~ 125°C	-64°C ~ 191°C	I2C/SMBus	2.7V ~ 5.5V	11 b	±1°C (±2.5°C)	8-VSSOP	Obsolete

Engineering Selection Recommendations

Category 1: Direct Functional Equivalents (Active Status)

LM86CIMMX/NOPB and LM90CIMMX/NOPB provide the closest functional match to the ADM1032ARMZ-2RL7 with active product status. Both maintain SMBus output, 7-bit local resolution, and equivalent accuracy specifications. LM86CIMMX/NOPB is preferred for applications requiring exact ±3°C accuracy matching. These parts operate within the 3V ~ 3.6V supply range, which is a subset of the original 3V ~ 5.5V specification. RoHS3 compliance is confirmed for both parts.

Category 2: Enhanced Performance Alternatives (Active Status)

LM95235CIMMX/NOPB, LM95235DIMMX/NOPB, LM95235EIMM/NOPB, and LM95235QEIMM/NOPB offer improved accuracy (±2°C) and higher resolution (10-bit local, 12-bit remote) compared to the original part. LM95235QEIMM/NOPB includes automotive-grade qualification (AEC-Q100) for applications requiring automotive reliability standards. All LM95235 variants are RoHS3 compliant and maintain SMBus compatibility.

Category 3: Extended Temperature Range Options (Active Status)

EMC1422-2-ACZL-TR and TMP411ADGKT extend operational temperature ranges to -40°C ~ 125°C with 11-bit resolution and ±1°C accuracy. EMC1422-2-ACZL-TR is active and RoHS3 compliant. TMP411ADGKT is obsolete but supports both I2C and SMBus protocols with 2.7V ~ 5.5V supply voltage range, matching the original part's upper voltage specification.

Supply Voltage Consideration:

The original ADM1032ARMZ-2RL7 operates at 3V ~ 5.5V. Most active substitutes operate at 3V ~ 3.6V. Applications requiring 5V operation must verify compatibility or select TMP411ADGKT (2.7V ~ 5.5V) or EMC1422-2-ACZL-TR with appropriate voltage regulation.

Frequently Asked Questions (FAQ)

Q: Can LM86CIMMX/NOPB directly replace ADM1032ARMZ-2RL7 in existing designs?

A: LM86CIMMX/NOPB is functionally compatible for applications operating within 0°C ~ 85°C local temperature range. Both parts feature SMBus output, 7-bit local resolution, ±3°C accuracy, and 8-MSOP packaging. However, the supply voltage range differs: LM86CIMMX/NOPB operates at 3V ~ 3.6V versus the original 3V ~ 5.5V. Verify your circuit's supply voltage before substitution.

Q: What is the difference between LM95235 variants?

A: LM95235 variants differ in temperature range and packaging. LM95235CIMMX/NOPB covers 0°C ~ 90°C. LM95235DIMMX/NOPB and LM95235EIMM/NOPB extend to -40°C ~ 90°C. LM95235QEIMM/NOPB covers -40°C ~ 85°C with automotive-grade qualification (AEC-Q100). All maintain 10-bit local and 12-bit remote resolution with ±2°C accuracy.

Q: Why is EMC1422-2-ACZL-TR recommended for extended temperature applications?

A: EMC1422-2-ACZL-TR operates across -40°C ~ 125°C with 11-bit resolution and ±1°C accuracy, exceeding the original part's 0°C ~ 100°C range. It maintains SMBus compatibility, 8-MSOP packaging, and active product status with RoHS3 compliance. The extended remote temperature range (-64°C ~ 191°C) supports demanding thermal monitoring applications.

Q: Are all substitute parts RoHS3 compliant?

A: Active substitute parts (LM86CIMMX/NOPB, LM90CIMMX/NOPB, LM95235 series, EMC1422-2-ACZL-TR) are RoHS3 compliant. Obsolete parts (LM86CIMM/NOPB, TMP411ADGKT) are also RoHS3 compliant but lack active manufacturing support.

Q: What packaging differences exist between substitutes?

A: The original ADM1032ARMZ-2RL7 uses 8-MSOP packaging. Most active substitutes use 8-VSSOP packaging, which is mechanically compatible within the 8-TSSOP/8-MSOP family (0.118", 3.00mm width). Both package types are surface mount with identical pin counts and compatible footprints for PCB layout purposes.

Q: Which substitute offers the best accuracy?

A: EMC1422-2-ACZL-TR and TMP411ADGKT both provide ±1°C accuracy (±2°C at extended ranges), compared to the original ±3°C specification. Among active parts, LM95235 variants offer ±2°C accuracy, representing a significant improvement over the original part's ±3°C specification.

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