AMP04ES Equivalent & Substitute Parts

Part Overview

The AMP04ES is an instrumentation amplifier integrated circuit manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This device functions as a single-circuit instrumentation amplifier with a -3dB bandwidth of 700 kHz, designed for precision signal conditioning applications requiring low input offset voltage and low input bias current.

The AMP04ES carries an obsolete product status. Locating equivalent and substitute parts is necessary to support ongoing system maintenance, design updates, and production continuity where the original component is no longer available through standard distribution channels.

Key Parameters

Parameter	Value
Amplifier Type	Instrumentation
Number of Circuits	1
-3dB Bandwidth	700 kHz
Current - Input Bias	22 nA
Voltage - Input Offset	30 µV
Current - Supply	750 µA
Current - Output / Channel	30 mA
Voltage - Supply Span (Min)	5 V
Voltage - Supply Span (Max)	30 V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the AMP04ES is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Amplifier Type: Instrumentation
Number of Circuits: 1
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Operating Temperature Range: -40°C ~ 85°C
Mounting Type: Surface Mount

Secondary Compatibility Parameters:

Voltage - Supply Span (Min): 5 V or lower
Voltage - Supply Span (Max): 30 V or higher
Current - Input Bias: 22 nA or lower
Voltage - Input Offset: 30 µV or lower
Current - Supply: 750 µA or lower
Current - Output / Channel: 30 mA or lower
-3dB Bandwidth: 700 kHz or higher

Substitute parts are grouped into two categories:

Direct Equivalent: AMP04ESZ is an identical Analog Devices part with the same electrical specifications and package, differing only in packaging format (Tube vs. unspecified) and product status (Active vs. Obsolete).

Functional Equivalents: Texas Instruments INA118 and INA126 series parts meet the primary substitution criteria and operate within the specified parameter ranges. These parts demonstrate superior performance in several electrical characteristics while maintaining full compatibility with the original package and thermal specifications.

Parameter Comparison

Parameter	AMP04ES	AMP04ESZ	INA118U	INA118U/2K5	INA118UB	INA118UB/2K5	INA126U	INA126U/2K5	INA126UA	INA126UA/2K5
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	Instrumentation	Instrumentation	Instrumentation	Instrumentation	Instrumentation	Instrumentation	Instrumentation	Instrumentation	Instrumentation	Instrumentation
Number of Circuits	1	1	1	1	1	1	1	1	1	1
-3dB Bandwidth	700 kHz	700 kHz	800 kHz	800 kHz	800 kHz	800 kHz	200 kHz	200 kHz	200 kHz	200 kHz
Current - Input Bias	22 nA	22 nA	1 nA	1 nA	1 nA	1 nA	10 nA	10 nA	10 nA	10 nA
Voltage - Input Offset	30 µV	30 µV	25 µV	25 µV	10 µV	10 µV	100 µV	100 µV	150 µV	150 µV
Current - Supply	750 µA	750 µA	350 µA	350 µA	350 µA	350 µA	175 µA	175 µA	175 µA	175 µA
Current - Output / Channel	30 mA	30 mA	12 mA	12 mA	12 mA	12 mA	10 mA	10 mA	10 mA	10 mA
Voltage - Supply Span (Min)	5 V	5 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	30 V	30 V	36 V	36 V	36 V	36 V	36 V	36 V	36 V	36 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	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)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	2 (1 Year)	3 (168 Hours)	3 (168 Hours)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

Direct Replacement:

AMP04ESZ is the recommended direct replacement for the obsolete AMP04ES. This part is manufactured by Analog Devices Inc. and maintains identical electrical specifications across all measured parameters. The AMP04ESZ carries Active product status and is ROHS3 compliant, supporting long-term design continuity and regulatory compliance. The primary distinction is packaging format; AMP04ESZ is supplied in Tube packaging.

Functional Alternatives:

The Texas Instruments INA118 series (INA118U, INA118U/2K5, INA118UB, INA118UB/2K5) provides functional equivalence with enhanced electrical performance. These parts deliver superior input bias current (1 nA vs. 22 nA), lower input offset voltage (10-25 µV vs. 30 µV), and reduced supply current (350 µA vs. 750 µA). All INA118 variants maintain the required 8-SOIC package, operating temperature range, and supply voltage specifications. These parts are Active and ROHS3 compliant.

The Texas Instruments INA126 series (INA126U, INA126U/2K5, INA126UA, INA126UA/2K5) operates within specification but with reduced bandwidth (200 kHz vs. 700 kHz) and lower output current capability (10 mA vs. 30 mA). Selection of INA126 variants is appropriate for applications where bandwidth and output current requirements are less stringent. All INA126 variants are Active and ROHS3 compliant.

Packaging and Moisture Considerations:

The AMP04ES and AMP04ESZ feature MSL 1 (Unlimited) moisture sensitivity, indicating minimal handling restrictions. Texas Instruments substitutes carry MSL 2 or MSL 3 ratings, requiring adherence to moisture control protocols during storage and assembly. The /2K5 suffix variants indicate Cut Tape (CT) & Digi-Reel packaging format, while non-suffixed variants are supplied in Tube packaging.

Frequently Asked Questions (FAQ)

Q: Can INA118U directly replace AMP04ES in all applications?

A: INA118U meets all primary substitution criteria: identical package (8-SOIC), matching operating temperature range (-40°C ~ 85°C), and supply voltage compatibility (2.7 V to 36 V exceeds the 5 V to 30 V requirement). The INA118U demonstrates superior electrical performance with lower input bias current, lower input offset voltage, and reduced supply current consumption. However, applications requiring the full 30 mA output current specification of the AMP04ES should note that INA118U provides 12 mA maximum output current. Bandwidth is higher (800 kHz vs. 700 kHz), which is compatible with existing designs.

Q: What is the difference between INA118U and INA118UB?

A: Both parts are functionally identical in electrical specifications and package. The primary distinction is input offset voltage: INA118U specifies 25 µV maximum, while INA118UB specifies 10 µV maximum. INA118UB represents a tighter tolerance grade suitable for applications requiring lower offset voltage. Both are available in Tube (INA118U, INA118UB) and Cut Tape/Digi-Reel (INA118U/2K5, INA118UB/2K5) packaging formats.

Q: Why does INA126 have lower bandwidth than AMP04ES?

A: The INA126 series is designed for lower-bandwidth applications with reduced power consumption (175 µA vs. 750 µA). The 200 kHz bandwidth specification reflects the design optimization for precision DC and low-frequency signal conditioning. Applications requiring the full 700 kHz bandwidth of the AMP04ES should select INA118 series alternatives.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. AMP04ESZ and all Texas Instruments substitutes (INA118 and INA126 series) are ROHS3 compliant. The original AMP04ES does not specify RoHS status due to its obsolete classification.

Q: What packaging options are available for substitute parts?

A: AMP04ESZ is supplied in Tube packaging. Texas Instruments substitutes are available in two packaging formats: Tube (standard part numbers without suffix) and Cut Tape (CT) & Digi-Reel (part numbers with /2K5 suffix). Selection depends on assembly process requirements and component handling procedures.

Q: Can I use INA126 in place of AMP04ES if bandwidth is not critical?

A: Yes, provided the application does not require output current exceeding 10 mA or bandwidth exceeding 200 kHz. INA126 variants meet all primary substitution criteria and offer significant power consumption reduction (175 µA vs. 750 µA). Input bias current is 10 nA, which is lower than the AMP04ES specification of 22 nA.

Q: What is the significance of the /2K5 suffix in part numbers?

A: The /2K5 suffix indicates packaging in Cut Tape (CT) & Digi-Reel format, typically used for automated assembly processes. Parts without this suffix are supplied in Tube packaging, suitable for manual assembly or alternative handling methods. Electrical specifications are identical between suffixed and non-suffixed variants.

Q: Are there supply voltage compatibility concerns when substituting?

A: No. The AMP04ES requires 5 V to 30 V supply range. All substitute parts accept 2.7 V to 36 V, which fully encompasses the original specification. Designs operating at the AMP04ES minimum supply voltage of 5 V will function with all substitutes.

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