OPA4137P Equivalent & Substitute Parts

Part Overview

The OPA4137P is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a quad amplifier in a 14-pin DIP package. This device is classified as Last Time Buy, indicating discontinued production with limited availability. The OPA4137P operates across a wide supply voltage range (4.5V to 36V) and maintains low input bias current (5 pA), making it suitable for precision signal conditioning and high-impedance applications.

Equivalent and substitute parts are necessary due to the Last Time Buy status of the OPA4137P. Alternative devices with identical or compatible electrical and mechanical specifications ensure design continuity and long-term component availability.

Substiute Parts

OPA4137P

Texas InstrumentsIn Stock: 5547OPA4137P Datasheet

Current PartRFQ

OPA4137U/2K5

Texas InstrumentsIn Stock: 9513OPA4137U/2K5 Datasheet

MFR RecommendedRFQ

LF444CN/NOPB

Texas InstrumentsIn Stock: 16334LF444CN/NOPB Datasheet

MFR RecommendedRFQ

LT1465CN

Analog Devices Inc.In Stock: 1469LT1465CN Datasheet

MFR RecommendedRFQ

OP482GPZ

Analog Devices Inc.In Stock: 1478OP482GPZ Datasheet

MFR RecommendedRFQ

OP497GPZ

Analog Devices Inc.In Stock: 1536OP497GPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA4137P is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Amplifier Type: J-FET input configuration
• Number of Circuits: Quad (4) amplifier channels
• Gain Bandwidth Product: 1 MHz nominal
• Supply Voltage Range: Minimum 4.5V, Maximum 36V
• Input Bias Current: ≤ 5 pA
• Voltage Input Offset: ≤ 1.5 mV
• Output Current per Channel: ≥ 60 mA

Mechanical Compatibility Criteria:

• Package Type: 14-pin DIP (0.300", 7.62mm)
• Mounting Type: Through Hole

Substitute parts are grouped into two categories:

Category 1 - Direct Electrical Equivalents (Identical Parameters): OPA4137U/2K5 maintains all electrical specifications of the OPA4137P with identical performance characteristics. The primary difference is packaging format (Surface Mount SOIC vs. Through Hole DIP) and product status (Active vs. Last Time Buy).

Category 2 - Functional Substitutes (Compatible Parameters): LF444CN/NOPB, LT1465CN, OP482GPZ, and OP497GPZ are J-FET quad amplifiers in 14-DIP packages with electrical parameters within acceptable tolerance ranges for most applications. These devices differ in specific performance metrics such as slew rate, input offset voltage, and supply current, but maintain core functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

OPA4137U/2K5 (Texas Instruments)

This part is the manufacturer-recommended direct equivalent. It maintains identical electrical specifications to the OPA4137P and carries Active product status, ensuring long-term availability. The OPA4137U/2K5 is supplied in Tape & Reel packaging (Surface Mount 14-SOIC format) rather than Through Hole DIP. Selection of this part requires PCB redesign to accommodate SOIC footprint or use of surface-mount-to-DIP adapter modules. This substitute is optimal for new designs or redesigns where surface-mount technology is acceptable.

LF444CN/NOPB (Texas Instruments)

This part maintains Through Hole 14-DIP package compatibility with the OPA4137P. It is J-FET input, quad amplifier configuration with Active product status. Electrical differences include lower slew rate (1V/µs vs. 3.5V/µs), higher input bias current (10 pA vs. 5 pA), and reduced output current per channel (14 mA vs. 60 mA). Operating temperature range is restricted to 0°C to 70°C. This substitute is suitable for applications where the OPA4137P's extended temperature range (-40°C to 85°C) is not required and output current demands do not exceed 14 mA per channel.

LT1465CN (Analog Devices Inc.)

This part provides Through Hole 14-DIP package compatibility with superior electrical performance in several metrics: input bias current (0.5 pA), input offset voltage (600 µV), and supply current (145 µA). However, it operates within a narrower supply voltage range (10V to 30V minimum vs. 4.5V to 36V) and restricted temperature range (0°C to 70°C). This substitute is suitable for precision applications requiring ultra-low input bias current and offset voltage, provided supply voltage and temperature constraints are met.

OP482GPZ (Analog Devices Inc.)

This part offers enhanced performance with higher slew rate (9V/µs) and gain bandwidth product (4 MHz), along with superior input offset voltage (200 µV) and lower input bias current (3 pA). It maintains Through Hole 14-DIP package compatibility and extended temperature range (-40°C to 85°C). However, output current per channel is reduced (10 mA vs. 60 mA) and minimum supply voltage is elevated (9V vs. 4.5V). This substitute is suitable for high-speed applications where increased bandwidth and slew rate are beneficial, provided output current requirements do not exceed 10 mA per channel and minimum supply voltage is ≥ 9V.

OP497GPZ (Analog Devices Inc.)

This part is a general-purpose amplifier (not J-FET input) with Through Hole 14-DIP package compatibility and extended temperature range (-40°C to 85°C). It exhibits significantly lower slew rate (0.15V/µs), reduced gain bandwidth product (500 kHz), and higher input bias current (60 pA). This substitute is not recommended for applications requiring J-FET input characteristics or where the OPA4137P's performance specifications are critical. Selection is limited to applications where general-purpose amplifier functionality is sufficient and J-FET input advantages are not required.

Frequently Asked Questions (FAQ)

Q1: Can OPA4137U/2K5 be used as a direct replacement for OPA4137P without circuit modification?

A: OPA4137U/2K5 maintains identical electrical specifications but differs in package format (14-SOIC Surface Mount vs. 14-DIP Through Hole). Direct socket replacement is not possible without mechanical adaptation. PCB redesign or use of surface-mount-to-DIP adapter modules is required.

Q2: What are the key electrical differences between OPA4137P and LF444CN/NOPB?

A: Both are J-FET quad amplifiers in 14-DIP packages. LF444CN/NOPB has lower slew rate (1V/µs vs. 3.5V/µs), higher input bias current (10 pA vs. 5 pA), and reduced output current per channel (14 mA vs. 60 mA). Operating temperature range is also restricted (0°C to 70°C vs. -40°C to 85°C).

Q3: Is LT1465CN suitable for low-temperature applications below 0°C?

A: No. LT1465CN operating temperature range is 0°C to 70°C. For applications requiring operation below 0°C, OPA4137P, OPA4137U/2K5, OP482GPZ, or OP497GPZ (all rated -40°C to 85°C) are required.

Q4: Which substitute part offers the highest slew rate?

A: OP482GPZ provides the highest slew rate at 9V/µs, compared to OPA4137P at 3.5V/µs. However, OP482GPZ has reduced output current per channel (10 mA vs. 60 mA) and elevated minimum supply voltage (9V vs. 4.5V).

Q5: Can OP497GPZ replace OPA4137P in precision, high-impedance applications?

A: No. OP497GPZ is a general-purpose amplifier with significantly higher input bias current (60 pA vs. 5 pA) and input offset voltage (80 µV vs. 1.5 mV). It lacks J-FET input characteristics essential for high-impedance signal conditioning. This substitute is not suitable for precision applications requiring low input bias current.

Q6: What is the minimum supply voltage requirement for each substitute?

A: OPA4137P and OPA4137U/2K5: 4.5V; LF444CN/NOPB: 36V (fixed); LT1465CN: 10V; OP482GPZ: 9V; OP497GPZ: 4V.

Q7: Which substitute parts maintain the OPA4137P's output current capability of 60 mA per channel?

A: Only OPA4137U/2K5 maintains 60 mA output current per channel. All other substitutes have reduced output current: LF444CN/NOPB (14 mA), OP482GPZ (10 mA), OP497GPZ (25 mA), and LT1465CN (not specified).

Q8: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (OPA4137U/2K5, LF444CN/NOPB, LT1465CN, OP482GPZ, OP497GPZ) are ROHS3 Compliant.