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TL034CPWR Equivalent & Substitute Parts
Part Overview
The TL034CPWR is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a 4-circuit device in a 14-TSSOP surface mount package. This component is classified as a linear amplifier and maintains Active product status. The TL034CPWR is utilized in applications requiring low input bias current and stable offset voltage characteristics across the 10V to 30V supply range. Substitute parts are identified when equivalent electrical performance, package compatibility, and operational specifications align with the original design requirements.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | J-FET | — |
| Number of Circuits | 4 | — |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) | — |
| Mounting Type | Surface Mount | — |
| Slew Rate | 5.1 | V/µs |
| Gain Bandwidth Product | 1.1 | MHz |
| Current - Input Bias | 2 | pA |
| Voltage - Input Offset | 790 | µV |
| Current - Supply | 870 (x4 Channels) | µA |
| Current - Output / Channel | 40 | mA |
| Voltage - Supply Span (Min) | 10 | V |
| Voltage - Supply Span (Max) | 30 | V |
| Operating Temperature | 0 to 70 | °C |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution logic for the TL034CPWR is based on the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type (J-FET or General Purpose)
- Number of Circuits (4)
- Package / Case (14-TSSOP)
- Mounting Type (Surface Mount)
- Voltage Supply Range compatibility (minimum 10V to 30V overlap)
- Operating Temperature range (minimum 0°C to 70°C coverage)
Grouping Categories:
Group 1: J-FET Amplifiers with Equivalent Supply Range Parts maintaining J-FET architecture with 10V to 30V supply compatibility: ADA4062-4ARUZ, ADA4062-4ARUZ-RL, TL084CPT, TL084IPT
Group 2: General Purpose Amplifiers with Extended Supply Range Parts with General Purpose amplifier type and broader supply specifications: ADA4077-4ARUZ, ADA4077-4ARUZ-RL, LM224APT, LM2902AT14-13, LM324ADTBR2G
All substitute parts share the 14-TSSOP package and 4-circuit configuration. Differences in slew rate, gain bandwidth product, input bias current, and supply current are documented for application-specific evaluation.
Parameter Comparison
| Parameter | TL034CPWR | ADA4062-4ARUZ | ADA4062-4ARUZ-RL | ADA4077-4ARUZ | ADA4077-4ARUZ-RL | LM224APT | LM2902AT14-13 | LM324ADTBR2G | TL084CPT | TL084IPT |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Analog Devices | Analog Devices | Analog Devices | Analog Devices | STMicroelectronics | Diodes Inc. | onsemi | STMicroelectronics | STMicroelectronics |
| Amplifier Type | J-FET | J-FET | J-FET | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | J-FET | J-FET |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Package / Case | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP |
| Slew Rate (V/µs) | 5.1 | 3.3 | 3.3 | 1.2 | 1.2 | 0.4 | 0.3 | — | 16 | 16 |
| Gain Bandwidth Product (MHz) | 1.1 | 1.4 | 1.4 | 3.6 | 3.6 | 1.3 | 0.7 | 1 | 4 | 4 |
| Current - Input Bias (pA) | 2 | 2 | 2 | 400 | 400 | 20000 | 20000 | 40000 | 20 | 20 |
| Voltage - Input Offset (µV) | 790 | 750 | 750 | 15 | 15 | 2000 | 1000 | 2000 | 3000 | 3000 |
| Current - Supply (µA) | 870 | 165 | 165 | 400 | 400 | 1500 | 700 | 1500 | 1400 | 1400 |
| Current - Output / Channel (mA) | 40 | 20 | 20 | 10 | 10 | 40 | 40 | 40 | 40 | 40 |
| Voltage - Supply Span Min (V) | 10 | 10 | 10 | 5 | 5 | 3 | 3 | 3 | 6 | 6 |
| Voltage - Supply Span Max (V) | 30 | 30 | 30 | 30 | 30 | 30 | 36 | 32 | 36 | 36 |
| Operating Temperature (°C) | 0 to 70 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 105 | -40 to 125 | 0 to 70 | 0 to 70 | -40 to 105 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 1 |
Engineering Selection Recommendations
J-FET Amplifier Substitutes (Preferred for Low Input Bias Current Applications):
ADA4062-4ARUZ and ADA4062-4ARUZ-RL maintain J-FET architecture with input bias current of 2 pA, matching the TL034CPWR specification. These parts operate across the 10V to 30V supply range and are ROHS3 compliant with MSL 1 rating. The ADA4062 series exhibits lower slew rate (3.3V/µs) and higher gain bandwidth product (1.4 MHz) compared to the TL034CPWR. Packaging differs: ADA4062-4ARUZ is supplied in Tube, while ADA4062-4ARUZ-RL uses Cut Tape & Digi-Reel format.
TL084CPT and TL084IPT are J-FET amplifiers with 20 pA input bias current and higher slew rate (16V/µs). Both parts are AEC-Q100 qualified for automotive applications and ROHS3 compliant. TL084CPT operates 0°C to 70°C; TL084IPT extends to -40°C to 105°C. Supply range is 6V to 36V, exceeding the TL034CPWR minimum requirement.
General Purpose Amplifier Substitutes (Extended Temperature and Supply Range):
ADA4077-4ARUZ and ADA4077-4ARUZ-RL are General Purpose amplifiers with superior input offset voltage (15 µV) and gain bandwidth product (3.6 MHz). Operating temperature extends to -40°C to 125°C. Supply range is 5V to 30V. Input bias current is 400 pA, higher than the TL034CPWR. Packaging: ADA4077-4ARUZ in Tube; ADA4077-4ARUZ-RL in Tape & Reel.
LM224APT (STMicroelectronics) and LM324ADTBR2G (onsemi) are General Purpose amplifiers with supply range 3V to 30V/32V respectively. Input bias current is 20 nA to 40 nA, significantly higher than the TL034CPWR. LM224APT operates -40°C to 105°C; LM324ADTBR2G operates 0°C to 70°C.
LM2902AT14-13 (Diodes Incorporated) is a General Purpose amplifier with 20 nA input bias current and extended supply range to 36V. Operating temperature is -40°C to 125°C. Moisture sensitivity level is MSL 3 (168 Hours), differing from the TL034CPWR MSL 1 rating.
All substitute parts are ROHS3 compliant and REACH unaffected. Product status is Active for all listed alternatives.
Frequently Asked Questions (FAQ)
Q: Can the ADA4062-4ARUZ directly replace the TL034CPWR in all applications?
A: The ADA4062-4ARUZ shares J-FET architecture, 4-circuit configuration, 14-TSSOP package, and 10V to 30V supply range with the TL034CPWR. Input bias current (2 pA) and voltage supply specifications are equivalent. However, slew rate differs (3.3V/µs vs. 5.1V/µs) and gain bandwidth product is higher (1.4 MHz vs. 1.1 MHz). Packaging format differs: ADA4062-4ARUZ is Tube; the TL034CPWR is Tape & Reel. Application-specific performance requirements determine suitability.
Q: What is the difference between ADA4062-4ARUZ and ADA4062-4ARUZ-RL?
A: Both parts are electrically identical with matching specifications. The difference is packaging format: ADA4062-4ARUZ is supplied in Tube; ADA4062-4ARUZ-RL is supplied in Cut Tape & Digi-Reel format. Selection depends on assembly process requirements and inventory management.
Q: Why do General Purpose amplifiers like the ADA4077-4ARUZ have higher input bias current than the TL034CPWR?
A: General Purpose amplifiers use bipolar input stages, resulting in higher input bias current (400 pA for ADA4077-4ARUZ) compared to J-FET input stages (2 pA for TL034CPWR). J-FET inputs provide extremely low input bias current at the cost of higher input offset voltage and lower gain bandwidth product. Application requirements for input impedance and frequency response determine the appropriate amplifier type.
Q: Is the TL084IPT suitable for applications requiring extended temperature operation?
A: The TL084IPT operates from -40°C to 105°C, extending below the TL034CPWR range (0°C to 70°C). It is AEC-Q100 qualified for automotive applications. The TL084IPT maintains J-FET architecture with 20 pA input bias current and higher slew rate (16V/µs). Supply range is 6V to 36V. Extended temperature capability makes it suitable for industrial and automotive environments.
Q: What does MSL 3 (168 Hours) mean for the LM2902AT14-13?
A: Moisture Sensitivity Level (MSL) 3 indicates the component requires controlled humidity storage and has a floor life of 168 hours after moisture exposure. The TL034CPWR has MSL 1 (Unlimited), meaning no moisture sensitivity restrictions. MSL 3 components require more stringent handling and storage protocols. This difference may impact supply chain logistics and assembly procedures.
Q: Can I use the LM224APT in a 10V to 30V supply application?
A: The LM224APT supply range is 3V to 30V, which covers the 10V to 30V requirement. However, the LM224APT is a General Purpose amplifier with 20 nA input bias current, significantly higher than the TL034CPWR (2 pA). Input offset voltage is 2 mV compared to 790 µV for the TL034CPWR. These differences affect circuit performance in precision applications requiring low input bias current and stable offset voltage.
Q: Are all substitute parts ROHS3 compliant?
A: All listed substitute parts are ROHS3 compliant. The TL034CPWR is also ROHS3 compliant. All parts are REACH unaffected. Compliance status is consistent across the substitution list.
Q: What is the significance of the 14-TSSOP package compatibility?
A: The 14-TSSOP (Thin Shrink Small Outline Package) is a standardized surface mount package with 0.173" width and 4.40mm body width. All substitute parts use the identical 14-TSSOP package, ensuring PCB footprint compatibility and assembly process compatibility. No layout or reflow profile changes are required for package substitution.
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