ADA4500-2ARMZ-RL Equivalent & Substitute Parts

Part Overview

The ADA4500-2ARMZ-RL is a general-purpose operational amplifier manufactured by Analog Devices Inc., featuring dual circuits in a rail-to-rail configuration. This device is classified as an active linear amplifier component in the 8-MSOP surface-mount package. The part maintains active product status with 3100 units in current inventory stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, procurement lead times, or design flexibility within specified parameter ranges. Substitution is valid only when the alternative part maintains compatibility across supply voltage, package form factor, circuit count, and output type specifications.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	ADA4500-2ARMZ-RL	—
Manufacturer	Analog Devices Inc.	—
Category	Linear, Amplifiers	—
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40°C ~ 125°C	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitute parts for the ADA4500-2ARMZ-RL are grouped based on strict compatibility across the following critical parameters:

Mandatory Compatibility Criteria:

Number of Circuits: 2 (dual-channel configuration)
Output Type: Rail-to-Rail
Package / Case: 8-MSOP (0.118", 3.00mm Width)
Mounting Type: Surface Mount
Voltage - Supply Span: 2.7 V minimum to 5.5 V maximum
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitution Logic:

The identified substitute parts are all manufactured by Analog Devices Inc. and maintain identical package geometry, circuit count, and supply voltage specifications. These parts are classified into two functional groups based on amplifier type and performance characteristics:

Group 1: CMOS Amplifiers (LTC6078 Series) LTC6078ACMS8#PBF, LTC6078AHMS8#PBF, LTC6078AIMS8#PBF, LTC6078CMS8#PBF, LTC6078CMS8#TRPBF, and LTC6078HMS8#PBF are CMOS-based amplifiers with reduced slew rate (0.05 V/µs) and lower gain bandwidth product (750 kHz) compared to the main part. These devices operate within the same supply voltage range and maintain rail-to-rail output capability. Operating temperature ranges vary by grade designation (C, A, H grades).

Group 2: CMOS Amplifiers (LTC6081 Series) LTC6081CMS8#PBF, LTC6081CMS8#TRPBF, and LTC6081HMS8#PBF are CMOS-based amplifiers with intermediate performance characteristics, featuring 1 V/µs slew rate and 3.5 MHz gain bandwidth product. These devices bridge performance between the LTC6078 and ADA4500 series while maintaining identical package and supply specifications.

All substitute parts share identical mechanical compatibility, regulatory compliance status, and moisture sensitivity classification with the main part.

Parameter Comparison

Parameter	ADA4500-2ARMZ-RL	LTC6078ACMS8#PBF	LTC6078AHMS8#PBF	LTC6078AIMS8#PBF	LTC6078CMS8#PBF	LTC6078CMS8#TRPBF	LTC6078HMS8#PBF	LTC6078IMS8#TRPBF	LTC6081CMS8#PBF	LTC6081CMS8#TRPBF	LTC6081HMS8#PBF
Amplifier Type	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	5.5	0.05	0.05	0.05	0.05	0.05	0.05	0.05	1	1	1
Gain Bandwidth Product (MHz)	10	0.75	0.75	0.75	0.75	0.75	0.75	0.75	3.5	3.5	3.5
Current - Input Bias (pA)	0.7	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2
Voltage - Input Offset (µV)	120	20	10	20	25	25	10	25	90	90	90
Current - Supply (mA, x2 Channels)	1.5	0.055	0.055	0.055	0.055	0.055	0.055	0.055	0.33	0.33	0.33
Current - Output / Channel (mA)	75	25	25	25	25	25	25	25	24	24	24
Voltage - Supply Span (Min)	2.7	2.7	2.7	2.7	2.7	2.7	2.7	2.7	2.7	2.7	2.7
Voltage - Supply Span (Max)	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 125°C
Package / Case	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts maintain active product status with Analog Devices Inc. and carry ROHS3 compliance certification. Selection among substitute options is determined by application-specific requirements within the following framework:

Temperature Range Considerations:

Parts with -40°C to 125°C operating range (LTC6078AHMS8#PBF, LTC6078HMS8#PBF, LTC6081HMS8#PBF) provide extended temperature coverage matching the ADA4500-2ARMZ-RL specification. These parts are suitable for applications requiring full industrial temperature range operation.

Parts with -40°C to 85°C operating range (LTC6078ACMS8#PBF, LTC6078AIMS8#PBF, LTC6078IMS8#TRPBF) are suitable for standard industrial applications with reduced upper temperature limit.

Parts with 0°C to 70°C operating range (LTC6078CMS8#PBF, LTC6078CMS8#TRPBF, LTC6081CMS8#PBF, LTC6081CMS8#TRPBF) are suitable for commercial-grade applications with restricted temperature operation.

Packaging Format Considerations:

Tube packaging (suffix #PBF) is standard for manual assembly and small-volume procurement. Tape & Reel packaging (suffix #TRPBF) is standard for automated assembly and high-volume production environments.

Performance Tier Selection:

LTC6078 series devices (0.75 MHz gain bandwidth product, 0.05 V/µs slew rate) are suitable for low-frequency signal conditioning, precision measurement, and low-power applications where bandwidth requirements do not exceed 750 kHz.

LTC6081 series devices (3.5 MHz gain bandwidth product, 1 V/µs slew rate) are suitable for intermediate-bandwidth applications requiring higher slew rate performance than LTC6078 but lower power consumption than ADA4500.

The ADA4500-2ARMZ-RL (10 MHz gain bandwidth product, 5.5 V/µs slew rate) remains the highest-performance option for applications requiring maximum bandwidth and slew rate within the dual-channel rail-to-rail amplifier category.

Frequently Asked Questions (FAQ)

Q: Can LTC6078 series amplifiers directly replace the ADA4500-2ARMZ-RL in all applications?

A: LTC6078 series amplifiers are mechanically and electrically compatible for pin-level substitution in the 8-MSOP package. However, the significantly lower gain bandwidth product (0.75 MHz versus 10 MHz) and reduced slew rate (0.05 V/µs versus 5.5 V/µs) restrict their use to low-frequency applications. Applications requiring bandwidth above 750 kHz or slew rates above 0.05 V/µs require the ADA4500 or LTC6081 series.

Q: What is the difference between LTC6078 and LTC6081 series amplifiers?

A: Both series are CMOS-based dual-channel rail-to-rail amplifiers in 8-MSOP packages with identical supply voltage specifications. The LTC6081 series provides higher performance with 3.5 MHz gain bandwidth product and 1 V/µs slew rate, compared to LTC6078 at 0.75 MHz and 0.05 V/µs. The LTC6081 series also draws higher supply current (330 µA per channel versus 55 µA) to achieve this performance improvement.

Q: Are tube and tape & reel packaging options electrically equivalent?

A: Yes. Tube packaging (#PBF suffix) and Tape & Reel packaging (#TRPBF suffix) contain identical die and electrical specifications. The packaging format difference affects only procurement and assembly methodology. Tube packaging is used for manual assembly and small quantities. Tape & Reel packaging is used for automated pick-and-place assembly and high-volume production.

Q: Which substitute part should be selected for applications requiring -40°C to 125°C operation?

A: Three substitute parts support the full -40°C to 125°C operating range: LTC6078AHMS8#PBF, LTC6078HMS8#PBF, and LTC6081HMS8#PBF. Selection between these options depends on required bandwidth and slew rate performance. LTC6078HMS8#PBF provides lowest power consumption (55 µA per channel) with 0.75 MHz bandwidth. LTC6081HMS8#PBF provides intermediate performance (330 µA per channel) with 3.5 MHz bandwidth.

Q: What is the significance of the grade designation (A, C, H, I) in LTC6078 and LTC6081 part numbers?

A: Grade designations indicate temperature range and performance binning. Grade H indicates -40°C to 125°C extended temperature range. Grade A indicates -40°C to 85°C industrial range. Grade C and I indicate 0°C to 70°C commercial range. Input offset voltage specifications vary by grade, with H-grade typically offering tighter offset specifications (10 µV) compared to C-grade (25 µV).

Q: Are all substitute parts ROHS3 compliant and moisture-sensitive level 1?

A: Yes. All identified substitute parts carry ROHS3 compliance certification and Moisture Sensitivity Level 1 (unlimited shelf life) classification, matching the ADA4500-2ARMZ-RL specifications. This ensures regulatory compliance and simplified handling requirements across all substitute options.

Q: Can the ADA4500-2ARMZ-RL be substituted with parts from other manufacturers?

A: The provided substitute list includes only Analog Devices Inc. manufactured parts. Substitution with amplifiers from other manufacturers requires independent verification of electrical specifications, package compatibility, and regulatory compliance status beyond the scope of this reference.

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