OP07CDG4 Equivalent & Substitute Parts

Part Overview

The OP07CDG4 is a general purpose operational amplifier manufactured by Texas Instruments, packaged in 8-SOIC surface mount configuration. This device is classified as Last Time Buy, indicating discontinued production with limited availability. The OP07CDG4 serves applications requiring low input offset voltage and low input bias current in precision analog signal conditioning circuits. Due to its Last Time Buy status, identification of functionally equivalent substitute components is necessary for design continuity and long-term supply chain planning.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Slew Rate	0.3	V/µs
Gain Bandwidth Product	600	kHz
Current - Input Bias	1.8	nA
Voltage - Input Offset	60	µV
Voltage - Supply Span (Min)	6	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the OP07CDG4 is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Amplifier Type: General Purpose
Number of Circuits: 1
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Slew Rate: 0.3 V/µs (minimum requirement)
Gain Bandwidth Product: 600 kHz (minimum requirement)
Current - Input Bias: 1.8 nA (maximum allowable)
Voltage - Input Offset: 60 µV (maximum allowable)
Voltage - Supply Span: 6 V to 36 V (minimum overlap requirement)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories:

Category 1: Direct Functional Equivalents (Texas Instruments OP07 Series) Parts OP07CD and OP07CDG4 share identical electrical specifications and are interchangeable within the same supply voltage and temperature operating ranges.

Category 2: Enhanced Performance Alternatives (Analog Devices OP07 Series) Parts OP07CSZ and OP07CSZ-REEL provide identical electrical performance with extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and Active product status, offering superior long-term availability.

Category 3: Instrumentation Amplifier Alternatives Parts AD621ARZ-R7, AD621BRZ-R7, AD8229HRZ, and AD8429BRZ are instrumentation amplifiers with different amplifier topology. These parts are listed as alternatives only when instrumentation amplifier functionality is acceptable for the application. These parts exhibit higher slew rates, higher bandwidth, and different input bias current characteristics.

Category 4: General Purpose Amplifier Alternatives Parts LT1012AIS8#TRPBF and LT1012IS8#TRPBF are general purpose operational amplifiers with extended supply voltage range (2.4 V to 40 V) and lower input bias current (25 pA), suitable for applications requiring wider supply flexibility.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	Gain Bandwidth (kHz)	Input Bias (nA)	Input Offset (µV)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status	Packaging
OP07CDG4	Texas Instruments	General Purpose	0.3	600	1.8	60	6	36	0 to 70	Last Time Buy	8-SOIC Tube
OP07CD	Texas Instruments	General Purpose	0.3	600	1.8	60	6	36	0 to 70	Last Time Buy	8-SOIC Tube
OP07CSZ	Analog Devices Inc.	General Purpose	0.3	600	1.8	60	6	36	-40 to 85	Not For New Designs	8-SOIC Tube
OP07CSZ-REEL	Analog Devices Inc.	General Purpose	0.3	600	1.8	60	6	36	-40 to 85	Active	8-SOIC CT & Digi-Reel
OP07CSZ-REEL7	Analog Devices Inc.	General Purpose	0.3	600	1.8	60	6	36	-40 to 85	Active	8-SOIC CT & Digi-Reel
AD621ARZ-R7	Analog Devices Inc.	Instrumentation	1.2	800	0.5	75	4.6	36	-40 to 85	Active	8-SOIC CT & Digi-Reel
AD621BRZ-R7	Analog Devices Inc.	Instrumentation	1.2	800	0.5	50	4.6	36	-40 to 85	Active	8-SOIC Tape & Reel
AD8229HRZ	Analog Devices Inc.	Instrumentation	22	15000	70	100	8	34	-40 to 175	Active	8-SOIC Tube
AD8429BRZ	Analog Devices Inc.	Instrumentation	22	15000	150	50	8	36	-40 to 125	Active	8-SOIC Tube
LT1012AIS8#TRPBF	Analog Devices Inc.	General Purpose	0.2	—	25	8	2.4	40	-40 to 85	Active	8-SO Tape & Reel
LT1012IS8#TRPBF	Analog Devices Inc.	General Purpose	0.2	—	25	8	2.4	40	-40 to 85	Active	8-SO Tape & Reel

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

OP07CD is the primary recommended substitute for OP07CDG4. Both parts are manufactured by Texas Instruments with identical electrical specifications and 8-SOIC packaging. OP07CD maintains the same operating temperature range (0°C to 70°C) and supply voltage span (6 V to 36 V). Both parts carry Last Time Buy status, indicating limited future availability. Current inventory of OP07CD (2094 pcs) exceeds OP07CDG4 inventory (740 pcs), providing improved near-term supply security.

For Extended Temperature Range and Active Status:

OP07CSZ-REEL and OP07CSZ-REEL7 are manufactured by Analog Devices Inc. and provide identical electrical performance to OP07CDG4 with extended operating temperature range (-40°C to 85°C). Both parts maintain Active product status, ensuring long-term availability and continued manufacturing support. OP07CSZ-REEL7 and OP07CSZ-REEL are functionally equivalent; selection between them depends on packaging preference (standard Digi-Reel versus alternative reel configuration). Inventory levels for both parts (25202 pcs and 25300 pcs respectively) significantly exceed the main part, providing superior supply chain security.

For Applications Requiring Instrumentation Amplifier Topology:

AD621BRZ-R7 is recommended when instrumentation amplifier functionality is required. This part provides lower input offset voltage (50 µV versus 60 µV), higher slew rate (1.2 V/µs versus 0.3 V/µs), and higher bandwidth (800 kHz versus 600 kHz). Operating temperature range (-40°C to 85°C) and supply voltage span (4.6 V to 36 V) are compatible with OP07CDG4 applications. Active product status ensures continued availability.

For Applications Requiring Extended Supply Voltage Range:

LT1012AIS8#TRPBF and LT1012IS8#TRPBF provide extended supply voltage range (2.4 V to 40 V) compared to OP07CDG4 (6 V to 36 V). These parts feature lower input bias current (25 pA versus 1.8 nA) and lower input offset voltage (8 µV versus 60 µV), suitable for precision applications. Slew rate is lower (0.2 V/µs versus 0.3 V/µs). Both parts carry Active product status and ROHS3 compliance.

Compliance and Regulatory Considerations:

All recommended substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the regulatory profile of OP07CDG4. All parts are classified as REACH Unaffected and carry ECCN EAR99 designation. No additional compliance verification is required for direct substitution.

Frequently Asked Questions (FAQ)

Q1: Can OP07CD be used as a direct replacement for OP07CDG4?

A: Yes. OP07CD is a direct functional equivalent with identical electrical specifications, package type (8-SOIC), and operating parameters. Both parts are manufactured by Texas Instruments and share the same base product number (OP07). The only difference is packaging format (Tube for both). Substitution requires no circuit modifications.

Q2: What is the difference between OP07CSZ and OP07CSZ-REEL?

A: OP07CSZ and OP07CSZ-REEL are electrically identical. The difference is packaging format: OP07CSZ is supplied in Tube packaging, while OP07CSZ-REEL is supplied in Cut Tape (CT) & Digi-Reel format. Both provide identical electrical performance and extended operating temperature range (-40°C to 85°C). Selection depends on assembly process requirements and packaging handling preferences.

Q3: Why are AD621 and AD8229 listed as alternatives if they are instrumentation amplifiers?

A: AD621ARZ-R7, AD621BRZ-R7, AD8229HRZ, and AD8429BRZ are instrumentation amplifiers with different internal topology compared to the general purpose operational amplifier OP07CDG4. These parts are listed as alternatives only for applications where instrumentation amplifier functionality (differential input stage with integrated gain setting) is acceptable or beneficial. Direct substitution in circuits designed for general purpose operational amplifiers is not recommended without circuit analysis.

Q4: What is the significance of "Last Time Buy" status for OP07CDG4?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of OP07CDG4 and will not accept new orders after a specified cutoff date. Current inventory (740 pcs) represents the final available stock. For applications requiring long-term supply continuity, migration to Active status parts (OP07CSZ-REEL, OP07CSZ-REEL7) is recommended.

Q5: Can LT1012AIS8#TRPBF be used in applications designed for OP07CDG4?

A: LT1012AIS8#TRPBF is functionally compatible for applications where the extended supply voltage range (2.4 V to 40 V) and lower input bias current (25 pA) provide benefits. However, the lower slew rate (0.2 V/µs versus 0.3 V/µs) may limit performance in high-speed applications. Circuit analysis is required to confirm compatibility with specific application requirements.

Q6: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this document maintain ROHS3 compliance, matching the regulatory profile of OP07CDG4. All parts are also classified as REACH Unaffected with ECCN EAR99 designation. No additional regulatory verification is required for substitution.

Q7: What is the difference between OP07CSZ-REEL and OP07CSZ-REEL7?

A: OP07CSZ-REEL and OP07CSZ-REEL7 are electrically identical general purpose operational amplifiers with identical specifications. Both are manufactured by Analog Devices Inc. and supplied in Cut Tape (CT) & Digi-Reel format. The designation difference (REEL versus REEL7) indicates different reel configurations or packaging variants. Selection depends on assembly equipment compatibility and supplier availability.

Q8: Which substitute part offers the best long-term availability?

A: OP07CSZ-REEL and OP07CSZ-REEL7 offer the best long-term availability due to Active product status and significantly higher inventory levels (25202 pcs and 25300 pcs respectively). These parts are manufactured by Analog Devices Inc. and provide identical electrical performance to OP07CDG4 with extended operating temperature range. Both parts are recommended for new designs requiring long-term supply security.

Q9: What are the key electrical differences between OP07CDG4 and AD8229HRZ?

A: AD8229HRZ is an instrumentation amplifier with significantly higher performance specifications: slew rate of 22 V/µs (versus 0.3 V/µs), bandwidth of 15 MHz (versus 600 kHz), and higher input bias current of 70 nA (versus 1.8 nA). Operating temperature range extends to 175°C. These differences make AD8229HRZ suitable for high-speed, high-temperature applications but not for direct replacement in precision low-speed circuits.

Q10: Can OP07CDG4 be substituted with AD621BRZ-R7 in precision measurement applications?

A: AD621BRZ-R7 is an instrumentation amplifier with lower input offset voltage (50 µV versus 60 µV) and higher bandwidth (800 kHz versus 600 kHz). Substitution is possible only if the application requires instrumentation amplifier functionality (differential input with integrated gain setting). For applications designed for general purpose operational amplifier topology, direct substitution is not recommended without circuit redesign.

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