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TL032CPSR Equivalent & Substitute Parts
Part Overview
The TL032CPSR is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a dual-channel (2 circuit) device in an 8-SO surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The TL032CPSR operates across a 10V to 30V supply range and is suitable for applications requiring low input bias current and low input offset voltage characteristics inherent to J-FET amplifier designs. Identification of equivalent and substitute parts is necessary due to product status discontinuation and to ensure design continuity and long-term component availability.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | J-FET | — |
| Number of Circuits | 2 | — |
| Slew Rate | 5.1 | V/µs |
| Gain Bandwidth Product | 1.1 | MHz |
| Current - Input Bias | 2 | pA |
| Voltage - Input Offset | 570 | µV |
| Current - Supply (x2 Channels) | 422 | µA |
| Current - Output / Channel | 40 | mA |
| Voltage - Supply Span (Min) | 10 | V |
| Voltage - Supply Span (Max) | 30 | V |
| Operating Temperature | 0 to 70 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-SOIC (0.209", 5.30mm Width) | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the TL032CPSR is determined by the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type: J-FET (low input bias current requirement)
- Number of Circuits: 2 (dual-channel configuration)
- Gain Bandwidth Product: 1.1 MHz (frequency response specification)
- Voltage Supply Range: Minimum 10V, Maximum 30V (operating envelope)
- Package Type: 8-SOIC or 8-SO surface mount (physical compatibility)
- Current - Input Bias: ≤ 2 pA (J-FET characteristic)
- Output Current per Channel: 40 mA (load drive capability)
Substitution Categories:
Category 1: Direct Manufacturer Equivalents (Texas Instruments) The TL032CDR represents the active production equivalent from the same manufacturer and base product family (TL032). This part maintains identical electrical specifications while offering improved availability and active product status.
Category 2: J-FET Amplifiers with Compatible Parameters (Analog Devices) The LT1457 and LT1464 series from Analog Devices are J-FET input operational amplifiers with dual-channel configuration. These devices operate within the required supply voltage range and maintain J-FET input characteristics. Variations in slew rate, input bias current, and supply current are within acceptable tolerance for J-FET amplifier substitution.
Category 3: General Purpose Amplifiers (STMicroelectronics) The LM258 and LM2904 series represent general-purpose operational amplifiers with dual-channel configuration. These devices differ from the TL032CPSR in amplifier type (general purpose vs. J-FET) and input bias current specification (20 nA vs. 2 pA). These substitutes are applicable only in applications where J-FET input characteristics are not mandatory and where higher input bias current is acceptable.
Parameter Comparison
| Parameter | TL032CPSR | TL032CDR | LM258ADT | LM258AYDT | LM2904AYDT | LT1457S8 | LT1464CS8 |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | STMicroelectronics | STMicroelectronics | STMicroelectronics | Analog Devices | Analog Devices |
| Amplifier Type | J-FET | J-FET | General Purpose | General Purpose | General Purpose | J-FET | J-FET |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Slew Rate (V/µs) | 5.1 | 5.1 | 0.6 | 0.6 | 0.6 | 4 | 0.9 |
| Gain Bandwidth Product (MHz) | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.7 | 1 |
| Current - Input Bias (pA) | 2 | 2 | 20000 | 20000 | 20000 | 7 | 0.5 |
| Voltage - Input Offset (µV) | 570 | 570 | 1000 | 1000 | 1000 | 220 | 600 |
| Current - Supply (µA) | 422 | 422 | 700 | 700 | 700 | 1800 | 145 |
| Current - Output / Channel (mA) | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| Voltage - Supply Span Min (V) | 10 | 10 | 3 | 3 | 3 | 9 | 10 |
| Voltage - Supply Span Max (V) | 30 | 30 | 30 | 30 | 30 | 36 | 30 |
| Operating Temperature (°C) | 0 to 70 | 0 to 70 | -40 to 105 | -40 to 105 | -40 to 125 | -40 to 85 | -40 to 85 |
| Package / Case | 8-SOIC (0.209", 5.30mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) |
| Product Status | Last Time Buy | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Recommendation: TL032CDR
The TL032CDR is the preferred substitute for the TL032CPSR. Both devices are manufactured by Texas Instruments and share identical electrical specifications including amplifier type (J-FET), slew rate (5.1 V/µs), gain bandwidth product (1.1 MHz), input bias current (2 pA), and supply voltage range (10V to 30V). The TL032CDR maintains Active product status with significantly higher inventory availability (34,566 units) compared to the Last Time Buy status of the TL032CPSR. Both parts are ROHS3 compliant and carry MSL 1 rating. The primary physical difference is package width (3.90mm vs. 5.30mm), which requires PCB layout verification for pin-to-pin compatibility.
Secondary Recommendation: LT1457S8, LT1457S8#PBF, LT1457S8#TRPBF
The LT1457 series from Analog Devices represents an alternative J-FET input operational amplifier with dual-channel configuration. These devices maintain J-FET input characteristics with input bias current of 7 pA (within J-FET specification range) and operate across a 9V to 36V supply envelope, which encompasses the TL032CPSR operating range. The LT1457 series exhibits higher slew rate (4 V/µs) and gain bandwidth product (1.7 MHz) compared to the TL032CPSR, providing improved frequency response characteristics. All LT1457 variants are Active products with ROHS3 compliance and MSL 1 rating. Selection among LT1457S8, LT1457S8#PBF, and LT1457S8#TRPBF depends on packaging requirements (standard, tube, or tape & reel).
Tertiary Recommendation: LT1464CS8, LT1464CS8#PBF, LT1464CS8#TRPBF
The LT1464 series from Analog Devices is a J-FET input operational amplifier optimized for low supply current operation (145 µA vs. 422 µA for TL032CPSR). This device is applicable in power-constrained applications while maintaining J-FET input characteristics (0.5 pA input bias current). The LT1464 operates across a 10V to 30V supply range, matching the TL032CPSR envelope. Slew rate is reduced to 0.9 V/µs and gain bandwidth product is 1 MHz, representing lower frequency response compared to the TL032CPSR. All LT1464 variants are Active products with ROHS3 compliance and MSL 1 rating.
Alternative Consideration: LM258ADT, LM258AYDT, LM2904AYDT
The LM258 and LM2904 series from STMicroelectronics are general-purpose operational amplifiers with dual-channel configuration. These devices differ fundamentally from the TL032CPSR in amplifier type and input bias current specification (20 nA vs. 2 pA). Selection of these alternatives is appropriate only when application requirements do not mandate J-FET input characteristics and when higher input bias current is acceptable. Both LM258 and LM2904 series are Active products with extended operating temperature ranges (-40°C to 105°C for LM258, -40°C to 125°C for LM2904) and AEC-Q100 automotive qualification. ROHS3 compliance and MSL 1 rating apply to all variants.
Frequently Asked Questions (FAQ)
Q: Can the TL032CDR be used as a direct replacement for the TL032CPSR without circuit modification?
A: The TL032CDR shares identical electrical specifications with the TL032CPSR. However, the package width differs (3.90mm vs. 5.30mm). PCB layout verification is required to confirm pin-to-pin compatibility and trace routing feasibility. No circuit modification is necessary if physical package dimensions are accommodated.
Q: What is the primary difference between J-FET and general-purpose amplifier types?
A: J-FET input amplifiers (TL032CPSR, LT1457, LT1464) feature extremely low input bias current (measured in picoamperes) and high input impedance. General-purpose amplifiers (LM258, LM2904) have higher input bias current (measured in nanoamperes) and lower input impedance. Selection depends on application requirements for input bias current and impedance characteristics.
Q: Is the LT1457 series suitable for applications requiring the exact slew rate of the TL032CPSR?
A: The LT1457 series exhibits a slew rate of 4 V/µs compared to 5.1 V/µs for the TL032CPSR. This represents a 21.6% reduction in slew rate. Applications with strict slew rate requirements must evaluate whether this difference affects circuit performance. The LT1464 series provides even lower slew rate (0.9 V/µs) and is not suitable for applications requiring high slew rate performance.
Q: Can the LM258 or LM2904 series be substituted in applications originally designed for the TL032CPSR?
A: The LM258 and LM2904 series are general-purpose amplifiers with input bias current of 20 nanoamperes, compared to 2 picoamperes for the TL032CPSR. This represents a 10,000-fold increase in input bias current. Substitution is appropriate only in applications where input bias current specification is not critical and where the higher input bias current does not degrade circuit performance. Applications requiring low input bias current characteristics must use J-FET input alternatives (TL032CDR, LT1457, or LT1464 series).
Q: What packaging options are available for the substitute parts?
A: The TL032CDR is available in Tape & Reel (TR) packaging. The LT1457 series is available in standard, tube, and tape & reel packaging variants (LT1457S8, LT1457S8#PBF, LT1457S8#TRPBF). The LT1464 series is available in standard, tube, and tape & reel packaging variants (LT1464CS8, LT1464CS8#PBF, LT1464CS8#TRPBF). The LM258 series is available in Cut Tape (CT) and Digi-Reel packaging (LM258ADT) and Tape & Reel packaging (LM258AYDT). The LM2904 series is available in Cut Tape (CT) and Digi-Reel packaging (LM2904AYDT). Selection of packaging type depends on assembly process requirements and inventory management practices.
Q: Are all substitute parts RoHS3 compliant?
A: All substitute parts listed (TL032CDR, LT1457 series, LT1464 series, LM258 series, LM2904 series) are ROHS3 compliant. All parts carry Moisture Sensitivity Level 1 (Unlimited) rating, indicating no moisture sensitivity constraints during storage and handling.
Q: What is the significance of the TL032CPSR being classified as Last Time Buy?
A: Last Time Buy status indicates that the TL032CPSR is no longer in active production and remaining inventory is limited (2,016 units). This classification necessitates identification of substitute parts for long-term design continuity and future production requirements. All recommended substitute parts maintain Active product status with substantially higher inventory availability.
Q: How does the operating temperature range affect substitute part selection?
A: The TL032CPSR operates across 0°C to 70°C. The TL032CDR maintains this identical range. The LT1457 and LT1464 series operate across -40°C to 85°C, providing extended low-temperature capability. The LM258 series operates across -40°C to 105°C, and the LM2904 series operates across -40°C to 125°C. Applications requiring operation below 0°C or above 70°C must select substitute parts with extended temperature ranges. Applications operating within the 0°C to 70°C envelope can use any substitute part without temperature-related constraints.
Q: What is the impact of supply current differences on circuit design?
A: The TL032CPSR draws 422 µA total supply current (211 µA per channel). The LT1457 series draws 1,800 µA (900 µA per channel), representing a 4.3-fold increase. The LT1464 series draws 145 µA total (72.5 µA per channel), representing a 65.6% reduction. The LM258 and LM2904 series draw 700 µA total (350 µA per channel). Applications with power budget constraints must account for these differences in power supply design and thermal management.
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