ADM1032ARMZ-1 Equivalent & Substitute Parts

Part Overview

The ADM1032ARMZ-1 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 new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	ADM1032ARMZ-1
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

Substitution eligibility for the ADM1032ARMZ-1 is determined by the following critical parameters:

Primary Compatibility Criteria:

Digital, Local/Remote sensor type with SMBus interface
8-MSOP or 8-VSSOP package configuration (0.118", 3.00mm Width)
Surface mount mounting type
Supply voltage range compatibility (minimum 3V support required)
Resolution of 7 bits or higher
Accuracy specification of ±3°C or better
Features including Output Switch and Programmable Limit

Substitution Logic: Parts are grouped into two categories based on operating temperature range alignment:

Standard Temperature Range Substitutes (0°C ~ 85°C local sensing): LM86CIMM/NOPB, LM86CIMMX/NOPB, LM90CIMM/NOPB, LM90CIMMX/NOPB, and LM95235CIMMX/NOPB. These parts maintain compatibility with the ADM1032ARMZ-1's core temperature monitoring function within overlapping operating windows.
Extended Temperature Range Substitutes (-40°C ~ 90°C local sensing): LM95235DIMMX/NOPB, LM95235EIMM/NOPB, and LM95235QEIMM/NOPB. These parts provide broader temperature coverage and are suitable for applications requiring extended operating range.
Wide Temperature Range Substitute (-40°C ~ 125°C): EMC1422-2-ACZL-TR from Microchip Technology offers the widest temperature specification and highest resolution (11 bits), with supply voltage limited to 3V ~ 3.6V.

Parameter Comparison

Part Number	Manufacturer	Sensor Type	Local Temp Range	Remote Temp Range	Output Type	Supply Voltage	Resolution	Accuracy	Package	Product Status
ADM1032ARMZ-1	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

Engineering Selection Recommendations

For Direct Replacement (Matching Temperature Range): LM86CIMMX/NOPB and LM90CIMMX/NOPB are active products with identical local temperature sensing range (0°C ~ 85°C) and matching SMBus interface. Both maintain ±3°C or better accuracy and support programmable limit and output switch features. LM86CIMMX/NOPB is recommended as the primary choice due to active product status and Texas Instruments manufacturing support.

For Extended Temperature Coverage: LM95235CIMMX/NOPB, LM95235DIMMX/NOPB, and LM95235QEIMM/NOPB provide higher resolution (10-12 bits) and improved accuracy (±2°C) with extended operating ranges. These parts are suitable for applications requiring broader temperature monitoring capability. LM95235QEIMM/NOPB includes automotive qualification (AEC-Q100) for applications requiring automotive-grade components.

For Maximum Temperature Range and Resolution: EMC1422-2-ACZL-TR from Microchip Technology offers the widest operating temperature range (-40°C ~ 125°C) and highest resolution (11 bits) with superior accuracy (±1°C). This part is recommended for applications requiring extended temperature monitoring beyond the ADM1032ARMZ-1 specification. Supply voltage is limited to 3V ~ 3.6V, requiring verification against system power requirements.

Compliance Considerations: All substitute parts maintain REACH Unaffected status and EAR99 ECCN classification matching the original part. LM95235QEIMM/NOPB includes RoHS3 compliance and automotive qualification. EMC1422-2-ACZL-TR and LM95235 series parts include RoHS3 compliance. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can LM86CIMMX/NOPB directly replace ADM1032ARMZ-1 in existing designs? A: LM86CIMMX/NOPB is functionally compatible for applications operating within 0°C ~ 85°C local temperature range. Both parts feature SMBus interface, 7-bit local resolution, ±3°C accuracy, and identical 8-MSOP package dimensions. The primary difference is supply voltage range: LM86CIMMX/NOPB operates at 3V ~ 3.6V versus ADM1032ARMZ-1's 3V ~ 5.5V. Verify system power supply compatibility before substitution.

Q: What is the difference between LM90CIMMX/NOPB and LM86CIMMX/NOPB? A: Both parts share identical temperature ranges (0°C ~ 85°C local), SMBus interface, and 8-VSSOP package. LM86CIMMX/NOPB is manufactured by Texas Instruments with active product status. LM90CIMMX/NOPB is manufactured by National Semiconductor with active product status. Accuracy specification differs: LM86CIMMX/NOPB specifies ±3°C while LM90CIMMX/NOPB specifies ±4°C. Both support identical features including programmable limit and output switch.

Q: Why would I choose LM95235QEIMM/NOPB over other substitutes? A: LM95235QEIMM/NOPB is recommended for automotive applications requiring extended temperature range (-40°C ~ 85°C), higher resolution (10-12 bits), improved accuracy (±2°C), and automotive qualification (AEC-Q100). This part is packaged in Tape & Reel format and includes RoHS3 compliance. Select this part when application requirements exceed standard industrial temperature monitoring specifications.

Q: Is EMC1422-2-ACZL-TR compatible with 5V supply systems? A: No. EMC1422-2-ACZL-TR operates at 3V ~ 3.6V supply voltage, which is narrower than ADM1032ARMZ-1's 3V ~ 5.5V range. This part is not suitable for systems requiring 5V operation. Verify system power supply operates within 3V ~ 3.6V before selecting this substitute.

Q: What packaging formats are available for substitute parts? A: All substitute parts are available in 8-MSOP or 8-VSSOP surface mount packages with 0.118" (3.00mm) width, matching ADM1032ARMZ-1 physical dimensions. Packaging options include Tape & Reel (TR), Cut Tape (CT), and Bulk formats. Verify packaging format availability with your supplier for production requirements.

Q: Do all substitute parts support programmable limit functionality? A: Yes. All listed substitute parts include Output Switch and Programmable Limit features matching ADM1032ARMZ-1 functionality. Additional features vary by part: LM86 and LM90 series include One-Shot and Shutdown Mode; LM95235 series includes One-Shot, Shutdown Mode, and Standby Mode; EMC1422-2-ACZL-TR includes Shutdown Mode.

Q: What is the resolution difference between ADM1032ARMZ-1 and substitute parts? A: ADM1032ARMZ-1 provides 7-bit local resolution. LM86 and LM90 series provide 7-bit local and 10-bit remote resolution. LM95235 series provides 10-bit local and 12-bit remote resolution. EMC1422-2-ACZL-TR provides 11-bit resolution. Higher resolution enables finer temperature measurement granularity for precision monitoring applications.

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