OP249GPZ Equivalent & Substitute Parts

Part Overview

The OP249GPZ is a J-FET input operational amplifier manufactured by Analog Devices Inc., configured as a dual-channel (2 circuit) device in an 8-DIP through-hole package. This linear amplifier is classified as Active product status and is RoHS3 compliant. The OP249GPZ serves applications requiring low input bias current, moderate gain-bandwidth product, and operation across extended supply voltage ranges. Substitute parts are identified for applications where component availability, performance optimization, or specific operational requirements necessitate alternative configurations.

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)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the OP249GPZ are selected based on electrical and mechanical compatibility within the following criteria:

Primary Substitution Parameters:

Amplifier Type: J-FET or General Purpose
Number of Circuits: 2 (dual-channel configuration)
Package Type: 8-DIP through-hole or 8-SOIC surface mount
Supply Voltage Range: Minimum 9V to 36V or greater
Operating Temperature Range: -40°C to 85°C or broader
RoHS3 Compliance and MSL Level 1

Electrical Performance Considerations:

Slew Rate: 3.9 V/µs to 45 V/µs (range of acceptable performance)
Gain Bandwidth Product: 3 MHz to 5.9 MHz
Input Bias Current: 4 pA to 700 nA
Input Offset Voltage: 100 µV to 600 µV
Output Current per Channel: 36 mA to 50 mA

Substitutes are grouped into two categories: through-hole 8-DIP packages (direct pin-compatible replacements) and surface-mount 8-SOIC packages (for redesigned PCB layouts).

Parameter Comparison

Parameter	OP249GPZ	LT1113CN8#PBF	LT1169CN8#PBF	LF353DRE4	OPA2107AP	TLE2142IP
Manufacturer	Analog Devices	Analog Devices	Analog Devices	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	J-FET	J-FET	J-FET	J-FET	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2
Slew Rate (V/µs)	22	3.9	4.2	13	18	45
Gain Bandwidth Product (MHz)	4.7	5.6	5.3	3	4.5	5.9
Current - Input Bias (pA)	30	300	4	50	4	700000
Voltage - Input Offset (µV)	400	550	600	5000	100	290
Current - Supply (mA)	5.6	5.3	5.3	3.6	4.5	6.9
Current - Output / Channel (mA)	36	—	—	40	40	50
Voltage - Supply Span Min (V)	9	9	9	7	9	4
Voltage - Supply Span Max (V)	36	40	40	36	36	44
Operating Temperature (°C)	-40 to 85	-40 to 85	0 to 70	0 to 70	-25 to 85	-40 to 105
Mounting Type	Through Hole	Through Hole	Through Hole	Surface Mount	Through Hole	Through Hole
Package / Case	8-DIP	8-DIP	8-DIP	8-SOIC	8-DIP	8-DIP
Product Status	Active	Active	Active	Obsolete	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Through-Hole 8-DIP Direct Replacements (Pin-Compatible):

LT1113CN8#PBF is an Active product from Analog Devices with J-FET input configuration and identical 8-DIP through-hole packaging. This part maintains the same supply voltage range (9V to 40V) and operating temperature span (-40°C to 85°C). The LT1113CN8#PBF exhibits higher gain-bandwidth product (5.6 MHz versus 4.7 MHz) and lower slew rate (3.9 V/µs versus 22 V/µs), making it suitable for applications prioritizing bandwidth over transient response speed.

LT1169CN8#PBF is an Active product from Analog Devices with J-FET input and 8-DIP through-hole packaging. This part features significantly lower input bias current (4 pA versus 30 pA) and extended supply voltage maximum (40V versus 36V). The operating temperature range is restricted to 0°C to 70°C, limiting use in extended low-temperature applications below -40°C.

OPA2107AP is an Obsolete product from Texas Instruments with general-purpose amplifier classification and 8-DIP through-hole packaging. This part maintains 9V to 36V supply range and -25°C to 85°C operating temperature. The OPA2107AP exhibits lower input offset voltage (100 µV versus 400 µV) and reduced slew rate (18 V/µs versus 22 V/µs). Obsolete status restricts availability for new designs.

TLE2142IP is an Active product from Texas Instruments with general-purpose amplifier classification, rail-to-rail output, and 8-DIP through-hole packaging. This part supports extended supply voltage range (4V to 44V) and broader operating temperature (-40°C to 105°C). The TLE2142IP exhibits significantly higher slew rate (45 V/µs versus 22 V/µs) and higher input bias current (700 nA versus 30 pA). Rail-to-rail output capability provides additional design flexibility.

Surface-Mount 8-SOIC Alternative:

LF353DRE4 is an Obsolete product from Texas Instruments with J-FET input configuration in 8-SOIC surface-mount package. This part requires PCB redesign and is not pin-compatible with through-hole applications. The LF353DRE4 operates at 0°C to 70°C, restricting low-temperature performance. Obsolete status and surface-mount packaging limit applicability to legacy system maintenance only.

Recommended Selection Criteria:

For Active product status and continued component availability, select from LT1113CN8#PBF, LT1169CN8#PBF, or TLE2142IP. For through-hole mounting compatibility without PCB redesign, eliminate LF353DRE4. For extended low-temperature operation (-40°C), eliminate LT1169CN8#PBF. For applications requiring low input bias current below 50 pA, select LT1169CN8#PBF or OPA2107AP. For high-speed transient response (slew rate >40 V/µs), select TLE2142IP.

Frequently Asked Questions (FAQ)

Q: Can LT1113CN8#PBF directly replace OP249GPZ in existing PCB designs?

A: Yes. Both parts use 8-DIP through-hole packaging with identical pin spacing (0.300", 7.62mm). Electrical parameters are compatible within the specified operating ranges. Verify supply voltage requirements (LT1113CN8#PBF supports up to 40V versus OP249GPZ at 36V maximum) and confirm that the lower slew rate (3.9 V/µs versus 22 V/µs) does not impact transient response requirements.

Q: What is the primary difference between J-FET and General Purpose amplifier types in this comparison?

A: J-FET input amplifiers (OP249GPZ, LT1113CN8#PBF, LT1169CN8#PBF, LF353DRE4) feature extremely low input bias current (4 pA to 300 pA range) and high input impedance, suitable for high-impedance signal sources. General Purpose amplifiers (OPA2107AP, TLE2142IP) offer different input characteristics and may include rail-to-rail output capability. Selection depends on source impedance and output swing requirements.

Q: Why is LF353DRE4 listed as a substitute if it is Obsolete and uses surface-mount packaging?

A: LF353DRE4 is included because it meets the core electrical substitution criteria (J-FET dual-channel amplifier with compatible supply voltage and temperature ranges). However, Obsolete status and 8-SOIC surface-mount packaging (versus 8-DIP through-hole) restrict its practical application to legacy system repairs where PCB modification is acceptable and component stock remains available.

Q: Does TLE2142IP rail-to-rail output provide advantages over the OP249GPZ?

A: Rail-to-rail output capability in TLE2142IP allows output voltage swing closer to supply rails, maximizing dynamic range in low-supply-voltage applications. The OP249GPZ does not specify rail-to-rail output. This feature is advantageous in 4V to 9V supply applications but provides no benefit in standard 9V to 36V supply designs.

Q: What is the impact of input offset voltage differences between OP249GPZ (400 µV) and OPA2107AP (100 µV)?

A: Lower input offset voltage in OPA2107AP reduces DC error in precision amplifier circuits. The 300 µV difference is significant in applications requiring offset nulling or DC-coupled signal processing. For AC-coupled applications or circuits with offset compensation networks, this difference has minimal impact.

Q: Can LT1169CN8#PBF be used in applications requiring -40°C operation?

A: No. LT1169CN8#PBF specifies operating temperature range of 0°C to 70°C, which does not include -40°C. The OP249GPZ and LT1113CN8#PBF both support -40°C to 85°C operation. For extended low-temperature applications, use OP249GPZ, LT1113CN8#PBF, or TLE2142IP.

Q: How does the 45 V/µs slew rate of TLE2142IP compare to the 22 V/µs of OP249GPZ?

A: Higher slew rate enables faster output voltage transitions in response to input step changes. TLE2142IP at 45 V/µs can transition output voltage twice as fast as OP249GPZ at 22 V/µs. This is critical in high-frequency signal processing, precision integrators, and transient-sensitive applications. Lower slew rate in LT1113CN8#PBF (3.9 V/µs) and LT1169CN8#PBF (4.2 V/µs) restricts use to lower-frequency applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (LT1113CN8#PBF, LT1169CN8#PBF, LF353DRE4, OPA2107AP, TLE2142IP) are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the OP249GPZ compliance status.

Q: What supply voltage range is common to all substitute parts?

A: The minimum common supply voltage is 9V (supported by OP249GPZ, LT1113CN8#PBF, LT1169CN8#PBF, OPA2107AP, and TLE2142IP). The maximum common supply voltage is 36V (supported by OP249GPZ, LF353DRE4, OPA2107AP, and LT1113CN8#PBF/LT1169CN8#PBF at 40V). TLE2142IP extends to 44V. For designs operating at 4V to 9V, only TLE2142IP is suitable.

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