OP295GP Equivalent & Substitute Parts

Part Overview

The OP295GP is a general-purpose operational amplifier manufactured by Analog Devices Inc., configured as a dual-circuit (2-channel) rail-to-rail output device in an 8-pin DIP package. This through-hole mounted component operates across a wide supply voltage range of 3V to 36V and is rated for industrial temperature applications from -40°C to 125°C.

The OP295GP is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability for production, and support long-term system maintenance where original inventory is depleted or procurement becomes impractical.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	Channels
Output Type	Rail-to-Rail	—
Slew Rate	0.03	V/µs
Gain Bandwidth Product	75	kHz
Current - Input Bias	7	nA
Voltage - Input Offset	300	µV
Current - Output / Channel	25	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 125	°C
Mounting Type	Through Hole	—
Package / Case	8-DIP (0.300", 7.62mm)	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the OP295GP is determined by compatibility across the following critical parameters:

Electrical Compatibility Requirements:

Amplifier Type: General Purpose
Number of Circuits: 2 (dual-channel configuration)
Output Type: Rail-to-Rail
Supply Voltage Range: Minimum 3V, Maximum 36V (substitute must support this span)
Operating Temperature Range: Must support -40°C to 125°C or a subset thereof
Mounting Type: Through Hole (for direct PCB replacement)
Package: 8-DIP form factor (for socket and board layout compatibility)

Performance Parameters: Substitute parts may exhibit different slew rates, gain bandwidth products, input bias currents, and input offset voltages. These differences are acceptable provided the substitute meets or exceeds the electrical requirements of the application circuit.

Product Status Consideration: The OP295GP is obsolete. Active and Last Time Buy alternatives provide continued availability and manufacturing support.

Parameter Comparison

Parameter	OP295GP	OP295GPZ	LT1673CN8#PBF	LT1673IN8#PBF	OPA2241PA	OPA2251PA
Manufacturer	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Texas Instruments	Burr Brown
Product Status	Obsolete	Active	Active	Active	Last Time Buy	Active
Number of Circuits	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
Slew Rate (V/µs)	0.03	0.03	0.005	0.005	0.01	0.01
Gain Bandwidth Product (kHz)	75	75	12	12	35	35
Current - Input Bias (nA)	7	7	0.025	0.025	4	20
Voltage - Input Offset (µV)	300	300	200	200	50	100
Current - Output / Channel (mA)	25	25	1.5	1.5	50	50
Voltage - Supply Span Min (V)	3	3	2.2	2.2	2.7	2.7
Voltage - Supply Span Max (V)	36	36	36	36	36	36
Operating Temperature (°C)	-40 to 125	-40 to 125	0 to 70	-40 to 85	-40 to 85	-40 to 85
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—
REACH Status	—	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	—

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance):

OP295GPZ is the direct successor to OP295GP. It maintains identical electrical specifications including slew rate (0.03 V/µs), gain bandwidth product (75 kHz), and all voltage/current parameters. The primary difference is product status: OP295GPZ is active with ROHS3 compliance and REACH unaffected certification. This part is suitable for applications requiring no circuit redesign or re-qualification.

Functional Equivalents (Same Package, Modified Performance):

LT1673CN8#PBF and LT1673IN8#PBF are dual-channel, rail-to-rail operational amplifiers in 8-DIP packages with identical mechanical compatibility. Both are active products with ROHS3 compliance. The LT1673 series exhibits lower slew rate (0.005 V/µs) and lower gain bandwidth product (12 kHz) compared to OP295GP, making them suitable for applications where reduced bandwidth and lower power consumption are acceptable or beneficial. LT1673IN8#PBF supports the full industrial temperature range (-40°C to 85°C), while LT1673CN8#PBF is limited to 0°C to 70°C.

OPA2241PA (Texas Instruments) and OPA2251PA (Burr Brown) are dual-channel, rail-to-rail operational amplifiers in 8-DIP packages. Both support the full supply voltage range (2.7V to 36V minimum, 36V maximum) and industrial temperature operation. OPA2241PA is Last Time Buy status with ROHS3 compliance. OPA2251PA is active. Both exhibit intermediate performance characteristics between OP295GP and LT1673 series, with slew rates of 0.01 V/µs and gain bandwidth products of 35 kHz.

Temperature Range Considerations:

Applications requiring operation at 125°C must use OP295GPZ, which maintains the full -40°C to 125°C range. All other substitutes are limited to maximum temperatures of 70°C to 85°C.

Compliance and Availability:

For new designs or production requiring regulatory compliance, OP295GPZ, LT1673 series, and OPA2241PA all carry ROHS3 certification and REACH unaffected status. OPA2251PA does not list compliance certifications in the provided data.

Frequently Asked Questions (FAQ)

Q: Can OP295GPZ be used as a direct replacement for OP295GP without circuit modification?

A: Yes. OP295GPZ is electrically identical to OP295GP across all specified parameters: slew rate, gain bandwidth product, input bias current, input offset voltage, output current, and supply voltage range. The 8-DIP package is mechanically identical. No circuit redesign is required.

Q: What is the primary difference between OP295GP and OP295GPZ?

A: OP295GP is obsolete; OP295GPZ is active. OP295GPZ includes ROHS3 compliance and REACH unaffected certification, making it suitable for modern manufacturing and regulatory environments. Electrical performance is identical.

Q: Can LT1673 series parts replace OP295GP in all applications?

A: LT1673 series parts are mechanically and electrically compatible in terms of package, supply voltage range, and dual-channel configuration. However, they exhibit significantly lower slew rate (0.005 V/µs vs. 0.03 V/µs) and lower gain bandwidth product (12 kHz vs. 75 kHz). Substitution is valid only for applications where these reduced performance characteristics are acceptable. Circuit re-qualification is recommended.

Q: What is the temperature limitation when using LT1673CN8#PBF?

A: LT1673CN8#PBF operates from 0°C to 70°C. Applications requiring operation below 0°C or above 70°C must use LT1673IN8#PBF (-40°C to 85°C) or OP295GPZ (-40°C to 125°C).

Q: Are OPA2241PA and OPA2251PA suitable for high-temperature applications?

A: Both OPA2241PA and OPA2251PA operate from -40°C to 85°C, which is below the OP295GP specification of -40°C to 125°C. Applications requiring operation above 85°C must use OP295GPZ.

Q: What is the difference between OPA2241PA and OPA2251PA?

A: Both are dual-channel, rail-to-rail operational amplifiers in 8-DIP packages with identical electrical specifications (0.01 V/µs slew rate, 35 kHz gain bandwidth product, -40°C to 85°C operation). OPA2241PA is manufactured by Texas Instruments and carries Last Time Buy status with ROHS3 compliance. OPA2251PA is manufactured by Burr Brown and is active. Compliance certifications for OPA2251PA are not specified in the provided data.

Q: Can I use ADA4096-2ARMZ as a substitute for OP295GP?

A: ADA4096-2ARMZ is not recommended as a direct substitute. While it is a dual-channel, rail-to-rail operational amplifier from Analog Devices, it uses surface-mount packaging (8-MSOP) rather than through-hole 8-DIP. Additionally, it exhibits significantly higher slew rate (0.4 V/µs) and gain bandwidth product (786 kHz), and lower maximum supply voltage (30V vs. 36V). Mechanical and electrical incompatibilities require complete circuit redesign.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 (Restriction of Hazardous Substances Directive 3) compliance indicates the component meets European Union restrictions on hazardous materials including lead, cadmium, mercury, and certain flame retardants. ROHS3 compliance is required for many modern manufacturing environments and regulatory jurisdictions. OP295GPZ, LT1673 series, and OPA2241PA all carry ROHS3 certification.

Q: What does REACH Unaffected status mean?

A: REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) Unaffected status indicates the component does not contain substances of very high concern (SVHC) listed under REACH regulations. This certification simplifies compliance documentation for supply chain and end-use applications. OP295GPZ, LT1673 series, and OPA2241PA all carry REACH Unaffected certification.

Q: Which substitute part has the lowest power consumption?

A: LT1673 series parts exhibit the lowest supply current at 1.9 µA per channel (3.8 µA total for dual channels). OPA2241PA and OPA2251PA consume 25 µA and 27 µA per channel respectively. OP295GP and OP295GPZ do not specify supply current in the provided data. LT1673 series is suitable for ultra-low-power applications.

Q: Which substitute part has the highest output current capability?

A: OPA2241PA and OPA2251PA both provide 50 mA per channel output current, compared to 25 mA for OP295GP and OP295GPZ, and 1.5 mA for LT1673 series. OPA2241PA and OPA2251PA are suitable for applications requiring higher output drive capability.

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