OPA2227MDREP Equivalent & Substitute Parts

Part Overview

The OPA2227MDREP is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-SOIC surface-mount package. This device is classified as Active and is ROHS3 compliant. The OPA2227MDREP serves applications requiring low input bias current, low input offset voltage, and moderate bandwidth performance across industrial and commercial temperature ranges. Substitute parts are identified when original inventory is unavailable, when alternative packaging formats are required, or when design specifications permit operation within the electrical parameter tolerances of equivalent devices.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Slew Rate	2.3	V/µs
Gain Bandwidth Product	8	MHz
Current - Input Bias	2.5	nA
Voltage - Input Offset	5	µV
Current - Supply (x2 Channels)	3.7	mA
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	5	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-55 to 125	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	3 (168 Hours)	—

Substitute Part Grouping Explanation

Substitute parts for the OPA2227MDREP are selected based on strict electrical and mechanical compatibility within the following criteria:

Primary Substitution Parameters:

Package format: 8-SOIC surface-mount configuration
Number of circuits: Dual-channel (2 circuits)
Supply voltage range: Minimum 5V to maximum 36V operation
Output current capability: 45 mA per channel
Input bias current: ≤2.5 nA
Input offset voltage: ≤5 µV
Operating temperature range: -55°C to 125°C or compatible subset
Compliance: ROHS3 and REACH Unaffected status

Substitution Logic: Parts are grouped by manufacturer and base product number. Variants within the same base product (such as AD8672ARZ, AD8672ARZ-REEL, and AD8672ARZ-REEL7) differ only in packaging format (Tube, Cut Tape & Digi-Reel, or Tape & Reel) and inventory availability, not electrical performance. Parts from different manufacturers (Analog Devices, Renesas) are included when electrical parameters fall within acceptable tolerance windows and mechanical compatibility is maintained.

Parameter Comparison

Parameter	OPA2227MDREP	AD8672ARZ	AD8672ARZ-REEL	AD8672ARZ-REEL7	AD8672TRZ-EP	ADA4004-2ARZ	ADA4004-2ARZ-R7	ADA4004-2ARZ-RL	ISL28227FBZ	ISL28227FBZ-T7	ISL28227FBZ-T7A
Manufacturer	Texas Instruments	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Renesas	Renesas	Renesas
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	2.3	4	4	4	4	2.7	2.7	2.7	3.6	3.6	3.6
Gain Bandwidth Product (MHz)	8	10	10	10	10	12	12	12	10	10	10
Current - Input Bias (nA)	2.5	3	3	3	3	40	40	40	1	1	1
Voltage - Input Offset (µV)	5	20	20	20	20	40	40	40	10	10	10
Current - Supply (mA, x2 Channels)	3.7	3	3	3	3	—	—	—	2.2	2.2	2.2
Current - Output / Channel (mA)	45	20	20	20	20	10	10	10	45	45	45
Voltage - Supply Span Min (V)	5	10	10	10	10	10	10	10	4.5	4.5	4.5
Voltage - Supply Span Max (V)	36	36	36	36	36	30	30	30	40	40	40
Operating Temperature (°C)	-55 to 125	-40 to 125	-40 to 125	-40 to 125	-55 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Obsolete

Engineering Selection Recommendations

Tier 1 - Direct Electrical Equivalents (Preferred for Full Compatibility):

The ISL28227FBZ and ISL28227FBZ-T7 (Renesas Electronics Corporation) provide the closest electrical match to the OPA2227MDREP. Both devices maintain the 45 mA output current per channel, lower input bias current (1 nA), and support the full 4.5V to 40V supply range. These parts are Active status with ROHS3 compliance and MSL 2 rating. The ISL28227FBZ-T7A variant is Obsolete and should not be selected for new designs.

Tier 2 - Acceptable Substitutes with Parameter Trade-offs:

The AD8672ARZ family (Analog Devices Inc.) offers improved slew rate (4V/µs vs. 2.3V/µs) and higher gain bandwidth product (10 MHz vs. 8 MHz). However, output current is reduced to 20 mA per channel, and minimum supply voltage increases to 10V. These variants are suitable when output current requirements do not exceed 20 mA and supply voltage remains above 10V. All AD8672 variants are Active with ROHS3 compliance and MSL 1 rating. Packaging options include Tube (AD8672ARZ), Cut Tape & Digi-Reel (AD8672ARZ-REEL, AD8672ARZ-REEL7), and Tube (AD8672TRZ-EP with extended temperature range -55°C to 125°C).

Tier 3 - Limited Compatibility (Conditional Use Only):

The ADA4004-2ARZ family (Analog Devices Inc., iPolar® series) exhibits significantly higher input bias current (40 nA) and input offset voltage (40 µV), with reduced output current (10 mA per channel) and maximum supply voltage (30V). These devices are suitable only when application specifications explicitly permit these parameter degradations. All ADA4004 variants are Active with ROHS3 compliance and MSL 1 rating. Packaging options include Tube (ADA4004-2ARZ), Cut Tape & Digi-Reel (ADA4004-2ARZ-R7), and Tape & Reel (ADA4004-2ARZ-RL).

Compliance and Certification:

All recommended substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the original OPA2227MDREP certification profile. Moisture sensitivity levels vary: OPA2227MDREP (MSL 3, 168 Hours), ISL28227 variants (MSL 2, 1 Year), and AD8672/ADA4004 variants (MSL 1, Unlimited). Lower MSL ratings provide extended shelf life and reduced handling constraints.

Frequently Asked Questions (FAQ)

Q1: Can AD8672ARZ replace OPA2227MDREP in all applications?

The AD8672ARZ is electrically compatible for applications where output current does not exceed 20 mA per channel and minimum supply voltage is 10V or higher. The OPA2227MDREP supports 45 mA output current and operates from 5V minimum. If your circuit requires 45 mA output current or 5V supply operation, AD8672ARZ is not suitable. For lower output current applications, AD8672ARZ offers superior slew rate and bandwidth performance.

Q2: What is the difference between AD8672ARZ, AD8672ARZ-REEL, and AD8672ARZ-REEL7?

These three part numbers are electrically identical. The differences are packaging format and reel configuration: AD8672ARZ is supplied in Tube packaging, AD8672ARZ-REEL uses standard Cut Tape & Digi-Reel format, and AD8672ARZ-REEL7 uses alternative Cut Tape & Digi-Reel format. Select based on your assembly equipment compatibility and inventory requirements. All three are Active status with identical electrical specifications.

Q3: Why is ISL28227FBZ-T7A listed as Obsolete?

ISL28227FBZ-T7A is marked Obsolete by the manufacturer. Although electrical specifications are identical to ISL28227FBZ and ISL28227FBZ-T7, new designs should not incorporate this part number. Use ISL28227FBZ (Tube) or ISL28227FBZ-T7 (alternative packaging) for active production.

Q4: What are the key electrical differences between OPA2227MDREP and ISL28227FBZ?

Both devices are dual-channel general-purpose amplifiers in 8-SOIC packages. ISL28227FBZ offers superior input bias current (1 nA vs. 2.5 nA) and lower minimum supply voltage (4.5V vs. 5V). OPA2227MDREP provides lower input offset voltage (5 µV vs. 10 µV) and higher slew rate (2.3V/µs vs. 3.6V/µs). Output current capability is identical at 45 mA per channel. Select based on your specific application requirements for bias current, offset voltage, or supply voltage constraints.

Q5: Can I use ADA4004-2ARZ as a direct replacement?

ADA4004-2ARZ is not a direct replacement. It exhibits 40 nA input bias current (16× higher than OPA2227MDREP), 40 µV input offset voltage (8× higher), and only 10 mA output current per channel (4.4× lower). Maximum supply voltage is also limited to 30V. Use ADA4004-2ARZ only if your application specifications explicitly permit these parameter degradations and do not require 45 mA output current or 36V supply operation.

Q6: What is the moisture sensitivity impact when switching from OPA2227MDREP (MSL 3) to AD8672ARZ (MSL 1)?

MSL 3 (168 Hours) means the component must be used within 168 hours of moisture exposure. MSL 1 (Unlimited) means no time restriction. Switching to AD8672ARZ (MSL 1) reduces handling constraints and extends shelf life. This is a beneficial change that simplifies supply chain management and reduces risk of moisture-induced failures during storage and assembly.

Q7: Are all substitute parts ROHS3 compliant?

Yes. All substitute parts listed (AD8672 family, ADA4004 family, ISL28227 family) are ROHS3 compliant and REACH Unaffected, matching the OPA2227MDREP compliance profile. No additional regulatory review is required when substituting within this list.

Q8: Which substitute offers the best performance for high-speed applications?

The AD8672ARZ family offers the highest slew rate (4V/µs) and gain bandwidth product (10 MHz) among the substitutes. However, output current is limited to 20 mA per channel. If your high-speed application requires 45 mA output current, ISL28227FBZ (3.6V/µs slew rate, 10 MHz bandwidth) is the optimal choice while maintaining full output current capability.

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