OPA2132P Equivalent & Substitute Parts Reference

Part Overview

The OPA2132P 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 availability. The OPA2132P delivers high-speed amplification with a slew rate of 20V/µs and gain bandwidth product of 8 MHz, suitable for precision audio and signal conditioning applications requiring low input bias current (5 pA) and low input offset voltage (250 µV).

Identification of equivalent and substitute parts is necessary due to the Last Time Buy status. Alternative components with compatible electrical characteristics and package options enable design continuity and long-term supply chain reliability.

Key Parameters

Parameter	OPA2132P Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	2	—
Slew Rate	20	V/µs
Gain Bandwidth Product	8	MHz
Current - Input Bias	5	pA
Voltage - Input Offset	250	µV
Current - Supply (x2 Channels)	4	mA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	5	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	—

Substitute Part Grouping Explanation

Substitution of the OPA2132P is determined by strict alignment of electrical and mechanical parameters within the following categories:

Primary Substitution Criteria:

Amplifier Type (J-FET or General Purpose)
Number of Circuits (2 circuits required)
Package / Case (8-DIP through-hole preferred for direct replacement)
Voltage Supply Range (minimum 5V, maximum ≥36V)
Operating Temperature Range (-40°C to 85°C preferred)
Slew Rate (≥15V/µs for high-speed applications)
Gain Bandwidth Product (≥5 MHz for signal fidelity)
Input Bias Current (≤50 pA for low-noise applications)
Input Offset Voltage (≤500 µV for precision circuits)

Secondary Substitution Criteria:

Mounting Type (through-hole for PCB compatibility)
RoHS Compliance (ROHS3 Compliant)
Product Status (Active preferred over Last Time Buy)
Current Supply and Output specifications

Substitute parts are grouped into two categories: Direct Package Equivalents (8-DIP through-hole) and Surface Mount Alternatives (8-SOIC for modern designs).

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
OPA2132P	Texas Instruments	J-FET	20	8	5	250	5	36	-40 to 85	8-DIP	Last Time Buy
OPA2132U/2K5	Texas Instruments	J-FET	20	8	5	250	5	36	-40 to 85	8-SOIC	Active
LF412ACN/NOPB	Texas Instruments	J-FET	15	4	50	500	10	44	0 to 70	8-DIP	Active
LT1057ACN8#PBF	Analog Devices Inc.	J-FET	14	5	5	150	20	36	0 to 70	8-DIP	Active
LT1057CN8#PBF	Analog Devices Inc.	J-FET	13	5	7	200	20	36	0 to 70	8-DIP	Active
LT1211ACN8#PBF	Analog Devices Inc.	General Purpose	7	14	45	125	2.5	36	-40 to 85	8-DIP	Active
LT1211CN8#PBF	Analog Devices Inc.	General Purpose	7	14	50	150	2.5	36	-40 to 85	8-DIP	Active
LT1211IN8#PBF	Linear Technology	General Purpose	7	14	50	150	2.5	36	-40 to 85	8-DIP	Active
MUSES8820D	Nisshinbo Micro Devices Inc.	Audio	5	11	100	300	7	32	-40 to 85	8-DIP	Active
OP275GPZ	Analog Devices Inc.	Audio	22	9	100	1000	9	44	-40 to 85	8-DIP	Active

Engineering Selection Recommendations

Tier 1 - Direct Electrical & Package Equivalents:

The OPA2132U/2K5 is the manufacturer-recommended direct equivalent, maintaining identical electrical specifications (20V/µs slew rate, 8 MHz GBW, 5 pA input bias, 250 µV offset) and supply range (5V to 36V). The primary difference is surface-mount 8-SOIC packaging instead of through-hole 8-DIP. This part is Active status with higher inventory availability (4412 pcs). Selection of OPA2132U/2K5 requires PCB redesign for surface-mount assembly but eliminates electrical re-qualification.

Tier 2 - J-FET Amplifiers with Acceptable Parameter Variance:

The LT1057ACN8#PBF and LT1057CN8#PBF (Analog Devices Inc.) maintain J-FET input architecture with 8-DIP through-hole packaging. Both deliver 5 MHz GBW and 5-7 pA input bias current. Trade-offs include reduced slew rate (13-14V/µs versus 20V/µs) and higher minimum supply voltage (20V versus 5V). These parts are suitable for applications where slew rate is not critical and supply voltage exceeds 20V.

The LF412ACN/NOPB (Texas Instruments) offers J-FET input with 8-DIP packaging and highest inventory (58,746 pcs). Electrical trade-offs include 15V/µs slew rate, 4 MHz GBW, and 50 pA input bias. Minimum supply voltage is 10V. This part is suitable for lower-speed precision applications.

Tier 3 - General Purpose Amplifiers:

The LT1211 series (LT1211ACN8#PBF, LT1211CN8#PBF, LT1211IN8#PBF) provides general-purpose amplification with 14 MHz GBW and extended temperature range (-40°C to 85°C). These parts sacrifice J-FET input characteristics (45-50 nA input bias) but deliver superior bandwidth and lower minimum supply voltage (2.5V). Selection is appropriate for applications prioritizing bandwidth over input bias current.

Tier 4 - Audio Amplifiers:

The MUSES8820D and OP275GPZ are audio-optimized amplifiers with 8-DIP through-hole packaging and -40°C to 85°C operating range. The OP275GPZ matches OPA2132P slew rate (22V/µs) and supply range (9-44V) but exhibits higher input offset voltage (1 mV). The MUSES8820D provides lower supply minimum (7V) but reduced slew rate (5V/µs). These parts are suitable for audio signal conditioning where input bias current is less critical.

Compliance & Availability:

All recommended substitutes are ROHS3 Compliant and REACH Unaffected. Active status parts (all substitutes except OPA2132P) ensure long-term supply availability. Selection should prioritize Active status parts to avoid future Last Time Buy constraints.

Frequently Asked Questions (FAQ)

Q1: Can OPA2132U/2K5 replace OPA2132P in existing designs?

A: OPA2132U/2K5 is electrically identical to OPA2132P with identical slew rate (20V/µs), GBW (8 MHz), input bias (5 pA), and supply range (5-36V). The primary difference is package format: OPA2132U/2K5 uses 8-SOIC surface-mount while OPA2132P uses 8-DIP through-hole. Direct PCB substitution is not possible without layout redesign. Electrical performance is equivalent.

Q2: What is the minimum supply voltage requirement for J-FET substitutes?

A: OPA2132P operates from 5V minimum. The LT1057 series requires 20V minimum, while LF412ACN/NOPB requires 10V minimum. General-purpose LT1211 series operates from 2.5V minimum. Supply voltage compatibility must be verified against circuit design requirements before substitution.

Q3: How does slew rate affect substitution suitability?

A: OPA2132P delivers 20V/µs slew rate. Substitutes with lower slew rates (LT1057: 13-14V/µs; LF412: 15V/µs; MUSES8820D: 5V/µs) may introduce signal distortion in high-frequency or high-amplitude applications. Applications with slew-rate-dependent performance (audio amplification, precision signal conditioning) require verification that reduced slew rate does not degrade system performance.

Q4: Are all substitute parts RoHS compliant?

A: Yes. OPA2132P and all listed substitutes are ROHS3 Compliant and REACH Unaffected. All parts meet current environmental and hazardous substance regulations for commercial and industrial applications.

Q5: Which substitute offers the best inventory availability?

A: LF412ACN/NOPB provides highest inventory (58,746 pcs new original in stock). OPA2132U/2K5 provides 4,412 pcs. All other substitutes provide 1,000-3,000 pcs. Inventory levels should be verified with suppliers for current availability.

Q6: Can audio amplifiers (MUSES8820D, OP275GPZ) replace OPA2132P?

A: Audio amplifiers are functionally compatible for audio signal conditioning applications. MUSES8820D and OP275GPZ maintain 8-DIP through-hole packaging and -40°C to 85°C operating range. Trade-offs include higher input bias current (100 nA versus 5 pA) and reduced slew rate (MUSES8820D: 5V/µs). These parts are suitable for audio applications where input bias current is not a limiting factor.

Q7: What is the operating temperature range compatibility?

A: OPA2132P operates -40°C to 85°C. LT1057 and LF412 series operate 0°C to 70°C, limiting use in extended temperature applications. LT1211 series, MUSES8820D, and OP275GPZ all operate -40°C to 85°C, matching OPA2132P temperature range. Temperature range must be verified against application requirements.

Q8: Is input offset voltage critical for substitution?

A: OPA2132P specifies 250 µV input offset. LT1057ACN8#PBF offers superior 150 µV offset. LT1211 series offers 125-150 µV offset. LF412ACN/NOPB specifies 500 µV offset. Audio amplifiers specify 300-1000 µV offset. Precision applications requiring offset voltage <250 µV should select LT1057 or LT1211 series. General signal conditioning applications tolerate higher offset voltage.

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