OPA2132PAG4 Equivalent & Substitute Parts

Part Overview

The OPA2132PAG4 is a J-FET input operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-DIP through-hole package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The OPA2132PAG4 delivers high input impedance and low input bias current characteristics suitable for precision analog signal conditioning applications. Identifying equivalent and substitute parts is essential for design continuity, long-term supply chain planning, and production sustainability when original inventory becomes depleted.

Substiute Parts

OPA2132PAG4

Texas InstrumentsIn Stock: 1179OPA2132PAG4 Datasheet

Current PartRFQ

OPA2132UA/2K5

Texas InstrumentsIn Stock: 20120OPA2132UA/2K5 Datasheet

MFR RecommendedRFQ

OPA2132PA

Texas InstrumentsIn Stock: 4254OPA2132PA Datasheet

MFR RecommendedRFQ

LT1113CN8#PBF

Analog Devices Inc.In Stock: 1134LT1113CN8#PBF Datasheet

MFR RecommendedRFQ

MUSES8820D

Nisshinbo Micro Devices Inc.In Stock: 2985MUSES8820D Datasheet

MFR RecommendedRFQ

OP275GPZ

Analog Devices Inc.In Stock: 3074OP275GPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OPA2132PAG4 is determined by the following critical parameters:

Primary Substitution Criteria:

• Dual-circuit configuration (2 circuits minimum)
• 8-DIP through-hole package format (0.300", 7.62mm)
• Operating temperature range: -40°C to 85°C
• Supply voltage compatibility: 5V to 36V span
• ROHS3 compliance and REACH unaffected status

Secondary Compatibility Factors:

• Slew rate ≥ 20 V/µs (for signal fidelity preservation)
• Gain bandwidth product ≥ 8 MHz (for frequency response matching)
• Input bias current ≤ 5 pA (for high-impedance applications)
• Input offset voltage ≤ 500 µV (for precision requirements)

Substitute parts are grouped into two categories: Direct Equivalents (identical amplifier type and electrical performance) and Functional Alternatives (different amplifier topology with compatible electrical parameters and package format).

Parameter Comparison

Engineering Selection Recommendations

Category 1: Direct Equivalents (Identical Electrical Performance)

OPA2132PA (Texas Instruments) is the primary direct equivalent. This part maintains identical J-FET amplifier topology, dual-circuit configuration, and all critical electrical parameters including 20 V/µs slew rate, 8 MHz gain bandwidth product, and 5 pA input bias current. The OPA2132PA is packaged in 8-DIP through-hole format matching the OPA2132PAG4 footprint. Both parts share Last Time Buy status, indicating similar supply constraints. This substitute is suitable for direct PCB replacement without circuit redesign.

OPA2132UA/2K5 (Texas Instruments) provides identical electrical specifications and J-FET topology but differs in mounting technology. This part is packaged in 8-SOIC surface-mount format rather than through-hole DIP. The OPA2132UA/2K5 maintains Active product status with significantly higher inventory (20,100 pcs), providing superior long-term availability. Selection of this substitute requires PCB redesign to accommodate surface-mount footprint and associated assembly process changes.

Category 2: Functional Alternatives (Compatible Parameters, Different Topology)

LT1113CN8#PBF (Analog Devices Inc.) is a J-FET amplifier maintaining the same amplifier type and dual-circuit configuration in 8-DIP through-hole package. This part exhibits lower slew rate (3.9 V/µs versus 20 V/µs) and reduced gain bandwidth product (5.6 MHz versus 8 MHz), representing degraded signal fidelity performance. Input bias current is significantly higher at 300 pA compared to 5 pA. Minimum supply voltage requirement increases to 9V. The LT1113CN8#PBF is suitable only for applications where reduced bandwidth and higher input bias current are acceptable.

MUSES8820D (Nisshinbo Micro Devices Inc.) and OP275GPZ (Analog Devices Inc.) are audio-type amplifiers with dual circuits in 8-DIP through-hole packages. Both parts feature input bias currents in the nanoampere range (100 nA), representing significant deviation from the OPA2132PAG4's 5 pA specification. The MUSES8820D provides 11 MHz gain bandwidth product and 5 V/µs slew rate. The OP275GPZ delivers 22 V/µs slew rate and 9 MHz gain bandwidth product with higher output current capability (90 mA per channel). These alternatives are suitable for audio and general-purpose applications where J-FET input characteristics are not critical.

Compliance and Regulatory Status:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements equivalent to the OPA2132PAG4. Moisture sensitivity levels vary; the OPA2132UA/2K5 requires MSL 3 handling (168 hours), while other substitutes specify MSL 1 or MSL 2 classifications.

Frequently Asked Questions (FAQ)

Q1: Can OPA2132UA/2K5 replace OPA2132PAG4 in existing PCB designs?

A: OPA2132UA/2K5 provides identical electrical performance but requires PCB redesign. The OPA2132PAG4 uses 8-DIP through-hole package (0.300", 7.62mm), while OPA2132UA/2K5 uses 8-SOIC surface-mount package (0.154", 3.90mm width). Direct socket substitution is not possible. PCB layout modification and reflow soldering process implementation are required.

Q2: What is the primary difference between OPA2132PA and OPA2132PAG4?

A: Both parts are identical J-FET dual-circuit operational amplifiers with matching electrical specifications and 8-DIP through-hole packaging. The primary distinction is product status: OPA2132PAG4 is Last Time Buy (discontinued), while OPA2132PA is also Last Time Buy but maintains higher inventory (4,200 pcs versus 1,121 pcs). Both parts are suitable for direct PCB replacement without circuit modification.

Q3: Why do LT1113CN8#PBF and audio amplifiers show higher input bias currents?

A: LT1113CN8#PBF is a J-FET amplifier with 300 pA input bias current, representing 60× higher bias current than OPA2132PAG4's 5 pA specification. Audio amplifiers MUSES8820D and OP275GPZ feature 100 nanoampere input bias currents, indicating 20,000× higher bias current. These differences reflect different semiconductor process technologies and design priorities. High input bias current applications requiring impedance levels above 1 MΩ may experience performance degradation with these alternatives.

Q4: Can MUSES8820D or OP275GPZ substitute for OPA2132PAG4 in precision analog circuits?

A: MUSES8820D and OP275GPZ are audio-type amplifiers optimized for audio frequency applications. While both maintain dual-circuit 8-DIP through-hole configuration and -40°C to 85°C operating temperature range, they exhibit significantly higher input bias currents (100 nanoamperes) compared to OPA2132PAG4's 5 picoampere specification. These substitutes are unsuitable for precision instrumentation, high-impedance signal conditioning, or applications requiring input bias current below 100 nanoamperes. Selection is appropriate only for audio and general-purpose amplification where input bias current specifications are non-critical.

Q5: What supply voltage considerations apply when selecting substitutes?

A: OPA2132PAG4 operates across 5V to 36V supply span. LT1113CN8#PBF requires minimum 9V supply (versus 5V), restricting use in low-voltage applications. MUSES8820D operates 7V to 32V, and OP275GPZ operates 9V to 44V. Circuit designs utilizing single 5V supply rails cannot accommodate LT1113CN8#PBF, MUSES8820D, or OP275GPZ without power supply modification. OPA2132PA and OPA2132UA/2K5 maintain full 5V to 36V compatibility.

Q6: How does product status affect substitute selection?

A: OPA2132PAG4 and OPA2132PA are both Last Time Buy, indicating production discontinuation with finite inventory. OPA2132UA/2K5, LT1113CN8#PBF, MUSES8820D, and OP275GPZ maintain Active product status with ongoing manufacturing. For long-term supply chain planning, Active-status parts provide superior availability assurance. However, Active status does not guarantee indefinite production; design teams should implement inventory management strategies and qualification timelines accordingly.

Q7: What are the slew rate implications for substitute selection?

A: OPA2132PAG4 delivers 20 V/µs slew rate, supporting high-speed signal conditioning and audio applications. LT1113CN8#PBF provides only 3.9 V/µs, limiting maximum signal frequency and introducing distortion in fast transient applications. MUSES8820D (5 V/µs) and OP275GPZ (22 V/µs) represent intermediate and superior performance respectively. Applications requiring slew rate ≥ 20 V/µs should select OPA2132PA, OPA2132UA/2K5, or OP275GPZ.

Q8: Are there package-specific handling requirements for surface-mount OPA2132UA/2K5?

A: OPA2132UA/2K5 specifies Moisture Sensitivity Level 3 (168 hours), requiring controlled humidity storage and bake-out procedures before reflow soldering. OPA2132PAG4 specifies MSL Not Applicable, indicating no moisture sensitivity. MUSES8820D (MSL 2, 1 Year) and OP275GPZ (MSL 1, Unlimited) require less stringent moisture control. Manufacturing facilities must implement appropriate moisture management protocols when transitioning from through-hole OPA2132PAG4 to surface-mount OPA2132UA/2K5.