OP249GP Equivalent & Substitute Parts

Part Overview

The OP249GP is a J-FET operational amplifier manufactured by Analog Devices Inc., configured as a dual-channel (2 circuit) device in an 8-DIP through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The OP249GP operates across a wide supply voltage range of 9V to 36V with a slew rate of 22V/µs and gain bandwidth product of 4.7 MHz, serving applications requiring low input bias current (30 pA) and moderate input offset voltage (400 µV).

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	2	—
Slew Rate	22	V/µs
Gain Bandwidth Product	4.7	MHz
Current - Input Bias	30	pA
Voltage - Input Offset	400	µV
Current - Supply	5.6	mA
Current - Output / Channel	36	mA
Voltage - Supply Span (Min)	9	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Mounting Type	Through Hole	—
Package / Case	8-DIP (0.300", 7.62mm)	—

Substitute Part Grouping Explanation

Substitution of the OP249GP is determined by the following critical parameters: amplifier type (J-FET), number of circuits (2), package type (8-DIP through-hole), supply voltage range compatibility (9V to 36V minimum), and operating temperature range (-40°C to 85°C minimum). Parts are grouped into two categories:

Direct Package Equivalents (8-DIP Through-Hole): Parts maintaining identical or superior electrical performance within the same physical package form factor, enabling direct board-level replacement without layout modification.

Functional Equivalents with Package Variation (8-SOIC Surface Mount): Parts providing equivalent or enhanced electrical performance but requiring PCB redesign due to different mounting technology and package dimensions.

Substitution validity requires that the candidate part meets or exceeds the minimum supply voltage range, maintains J-FET or compatible amplifier architecture, and supports the full operating temperature range or a subset thereof that encompasses the application requirements.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Number of Circuits	Slew Rate (V/µs)	Gain Bandwidth Product (MHz)	Input Bias Current (pA)	Input Offset Voltage (µV)	Supply Current (mA)	Output Current / Channel (mA)	Supply Voltage Min (V)	Supply Voltage Max (V)	Operating Temperature (°C)	Package	Product Status
OP249GP	Analog Devices	J-FET	2	22	4.7	30	400	5.6	36	9	36	-40 to 85	8-DIP	Obsolete
OP249GPZ	Analog Devices	J-FET	2	22	4.7	30	400	5.6	36	9	36	-40 to 85	8-DIP	Active
LT1113CN8#PBF	Analog Devices	J-FET	2	3.9	5.6	300	550	5.3	—	9	40	-40 to 85	8-DIP	Active
LT1169CN8#PBF	Analog Devices	J-FET	2	4.2	5.3	4	600	5.3	—	9	40	0 to 70	8-DIP	Active
LT1057CN8#PBF	Analog Devices	J-FET	2	13	5	7	200	1.7	—	20	36	0 to 70	8-DIP	Active
OPA2107AP	Texas Instruments	General Purpose	2	18	4.5	4	100	4.5	40	9	36	-25 to 85	8-DIP	Obsolete
TLE2142IP	Texas Instruments	General Purpose	2	45	5.9	700	290	6.9	50	4	44	-40 to 105	8-DIP	Active
TL082ACP	Texas Instruments	J-FET	2	13	3	30	3000	1.4	10	10	30	0 to 70	8-DIP	Active
ADA4610-2BRZ	Analog Devices	J-FET	2	61	16.3	5	200	1.6	79	10	30	-40 to 125	8-SOIC	Active
OPA211ID	Texas Instruments	General Purpose	1	27	80	60	30	3.6	30	4.5	36	-40 to 125	8-SOIC	Active
RC4558IDR	Texas Instruments	General Purpose	2	1.7	3	150	500	2.5	10	10	30	-40 to 85	8-SOIC	Active

Engineering Selection Recommendations

Primary Direct Replacement (Recommended):

OP249GPZ is the direct equivalent of OP249GP, maintaining identical electrical specifications and 8-DIP through-hole package configuration. OP249GPZ carries Active product status with ROHS3 compliance and REACH Unaffected designation, providing long-term supply assurance and regulatory compliance for new designs and production continuity.

Alternative 8-DIP Through-Hole Substitutes:

LT1113CN8#PBF and LT1169CN8#PBF are J-FET amplifiers in 8-DIP packages with supply voltage ranges encompassing the OP249GP minimum requirement (9V to 40V). Both parts are Active status with ROHS3 compliance. LT1113CN8#PBF maintains the full -40°C to 85°C operating temperature range of the OP249GP. LT1169CN8#PBF operates within 0°C to 70°C, suitable for applications not requiring the full lower temperature specification.

LT1057CN8#PBF is a J-FET amplifier with superior input bias current (7 pA) and lower supply current (1.7 mA). This part requires minimum 20V supply voltage, restricting use to applications with higher supply rails. Operating temperature range is 0°C to 70°C.

OPA2107AP is a general-purpose amplifier with comparable gain bandwidth product (4.5 MHz) and supply voltage range (9V to 36V). This part is obsolete, offering no advantage over OP249GPZ for new designs.

TLE2142IP is a general-purpose amplifier with enhanced slew rate (45V/µs) and wider supply voltage range (4V to 44V). Operating temperature extends to 105°C. This part is suitable for applications requiring higher performance and extended temperature operation.

TL082ACP is a J-FET amplifier with lower supply current (1.4 mA) but restricted supply voltage range (10V to 30V) and operating temperature (0°C to 70°C). Input offset voltage is significantly higher (3 mV).

Surface Mount Alternative (Package Redesign Required):

ADA4610-2BRZ is a J-FET amplifier in 8-SOIC surface mount package with enhanced performance: slew rate 61V/µs, gain bandwidth product 16.3 MHz, and extended operating temperature (-40°C to 125°C). Supply voltage range is 10V to 30V. This part requires PCB layout modification but provides superior dynamic performance for applications tolerating surface mount technology.

Frequently Asked Questions (FAQ)

Q: Can OP249GPZ be used as a direct replacement for OP249GP without any circuit modifications?

A: Yes. OP249GPZ is electrically and mechanically identical to OP249GP, with identical pin configuration, electrical specifications, and 8-DIP package dimensions. Direct board-level substitution is valid. OP249GPZ carries Active product status, ensuring long-term availability.

Q: What is the primary reason to select OP249GPZ over other alternatives?

A: OP249GPZ is the direct manufacturer equivalent with identical specifications and Active product status. It requires no circuit redesign, no PCB layout modification, and no performance verification. It is the lowest-risk substitution path.

Q: Can I use LT1113CN8#PBF or LT1169CN8#PBF as substitutes?

A: Both are J-FET amplifiers in 8-DIP packages with compatible supply voltage ranges. LT1113CN8#PBF maintains the full -40°C to 85°C operating temperature range. LT1169CN8#PBF operates within 0°C to 70°C. Both are Active status with ROHS3 compliance. Electrical performance differs slightly; verify application requirements for slew rate, gain bandwidth product, and input offset voltage before selection.

Q: Why is TL082ACP not recommended as a primary substitute?

A: TL082ACP has a restricted supply voltage range (10V to 30V minimum), which excludes applications requiring 9V operation. Input offset voltage is significantly higher (3 mV versus 400 µV). Operating temperature range is limited to 0°C to 70°C. These restrictions make it unsuitable for applications matching the OP249GP specification envelope.

Q: Can I use ADA4610-2BRZ as a substitute?

A: ADA4610-2BRZ is functionally equivalent with superior performance (higher slew rate, gain bandwidth product, and extended temperature range). However, it is packaged in 8-SOIC surface mount format, requiring complete PCB redesign. Use this part only when surface mount technology is acceptable and enhanced performance is beneficial.

Q: What is the difference between OPA2107AP and OP249GPZ?

A: Both are dual-channel amplifiers in 8-DIP packages with similar gain bandwidth product (4.5 MHz versus 4.7 MHz) and supply voltage range (9V to 36V). OPA2107AP is classified as obsolete, while OP249GPZ is Active. OP249GPZ is the preferred choice for new designs and production continuity.

Q: Does TLE2142IP offer advantages over OP249GPZ?

A: TLE2142IP is a general-purpose amplifier with enhanced slew rate (45V/µs versus 22V/µs) and wider supply voltage range (4V to 44V). Operating temperature extends to 105°C. These enhancements are beneficial for high-speed applications and extended temperature environments. However, it is not a J-FET amplifier and carries different electrical characteristics. Verify application compatibility before selection.

Q: Are all substitute parts ROHS3 compliant?

A: All Active status parts listed (OP249GPZ, LT1113CN8#PBF, LT1169CN8#PBF, LT1057CN8#PBF, TLE2142IP, TL082ACP, ADA4610-2BRZ, OPA211ID, RC4558IDR) carry ROHS3 compliance designation. Obsolete parts (OP249GP, OPA2107AP) also carry ROHS3 compliance. Verify compliance status for specific procurement requirements.

Q: What is the minimum supply voltage requirement for each substitute?

A: OP249GPZ, LT1113CN8#PBF, LT1169CN8#PBF, and OPA2107AP require 9V minimum. LT1057CN8#PBF requires 20V minimum. TL082ACP and RC4558IDR require 10V minimum. ADA4610-2BRZ requires 10V minimum. TLE2142IP requires 4V minimum. OPA211ID requires 4.5V minimum. Select parts based on application supply voltage availability.

Q: Which substitute offers the lowest input bias current?

A: LT1169CN8#PBF offers the lowest input bias current at 4 pA, compared to OP249GP at 30 pA. LT1057CN8#PBF provides 7 pA. ADA4610-2BRZ provides 5 pA. These lower values are beneficial for high-impedance input applications.

Q: Can I mix OP249GP and OP249GPZ in the same production batch?

A: Both parts are electrically and mechanically identical. Mixing is valid from a functional perspective. However, verify procurement and traceability requirements for your application and supply chain documentation.

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