LM2902AT14-13 Equivalent & Substitute Parts

Part Overview

The LM2902AT14-13 is a general-purpose operational amplifier manufactured by Diodes Incorporated, configured as a 4-circuit integrated circuit in a 14-TSSOP surface mount package. This device is actively produced and maintains a current inventory of 3600 units. The LM2902AT14-13 operates across a wide supply voltage range of 3V to 36V and is suitable for applications requiring low-cost, general-purpose amplification in compact form factors.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or application requirements demand enhanced performance characteristics such as higher slew rate, improved input bias current, or different amplifier topology.

Substiute Parts

LM2902AT14-13

Diodes IncorporatedIn Stock: 3626LM2902AT14-13 Datasheet

Current PartRFQ

TL034CPW

Texas InstrumentsIn Stock: 1999TL034CPW Datasheet

MFR RecommendedRFQ

TL034CPWR

Texas InstrumentsIn Stock: 1972TL034CPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2902AT14-13 is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 14-TSSOP surface mount package with identical 0.173" (4.40mm) width to ensure PCB layout compatibility without redesign.

Circuit Configuration: The substitute must provide 4 operational amplifier circuits within a single integrated circuit to maintain functional equivalence.

Output Current Capability: All substitute parts must deliver a minimum of 40 mA per channel output current to support existing load requirements.

Supply Voltage Range: The substitute must operate within the application's supply voltage specifications. The LM2902AT14-13 operates from 3V to 36V; substitutes with narrower ranges (such as 10V to 30V) require verification that the application supply voltage falls within the substitute's operating range.

Amplifier Topology: Substitutes may employ different amplifier topologies (general-purpose bipolar versus J-FET input stages). J-FET input amplifiers offer superior input bias current performance but may have different supply voltage requirements and operating temperature ranges.

The two qualified substitute parts—TL034CPW and TL034CPWR—both employ J-FET input topology, resulting in significantly lower input bias current (2 pA versus 20 nA) and improved input offset voltage (790 µV versus 1 mV). These substitutes operate within a narrower supply voltage range (10V to 30V) and narrower temperature range (0°C to 70°C) compared to the LM2902AT14-13.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TL034CPWR

The TL034CPWR is the recommended substitute for the LM2902AT14-13. Both devices maintain Active product status, ensuring continued availability and manufacturing support. The TL034CPWR is supplied in Tape & Reel packaging, matching the packaging format of the primary part and supporting high-volume production environments. Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications, ensuring regulatory and trade compliance equivalence.

The TL034CPWR employs J-FET input topology, delivering superior input bias current performance (2 pA versus 20 nA) and improved input offset voltage (790 µV versus 1 mV). The device exhibits higher slew rate (5.1 V/µs versus 0.3 V/µs) and greater gain bandwidth product (1.1 MHz versus 700 kHz), providing enhanced dynamic performance for signal conditioning applications.

Critical Limitation: The TL034CPWR operates within a narrower supply voltage range (10V to 30V minimum to maximum) compared to the LM2902AT14-13 (3V to 36V). Applications requiring operation below 10V or above 30V cannot use this substitute without circuit redesign. The operating temperature range is also narrower (0°C to 70°C versus -40°C to 125°C), restricting use in extended temperature environments.

Secondary Substitute: TL034CPW

The TL034CPW provides identical electrical performance to the TL034CPWR but carries Last Time Buy product status, indicating discontinued production with limited remaining inventory (1900 units). This part is supplied in Tube packaging rather than Tape & Reel, requiring manual handling and limiting suitability for automated assembly processes. The TL034CPW should be selected only when TL034CPWR availability is exhausted and application requirements do not demand high-volume production support.

Substitution Constraints:

Both TL034 variants require verification that the application supply voltage operates within the 10V to 30V range and that the operating temperature environment remains between 0°C and 70°C. Applications with supply voltages below 10V or above 30V, or operating temperatures below 0°C or above 70°C, cannot use these substitutes.

Frequently Asked Questions (FAQ)

Q: Can the TL034CPWR directly replace the LM2902AT14-13 without PCB modifications?

A: Yes, both devices use identical 14-TSSOP surface mount packages with matching pin configurations and pinout assignments. No PCB layout changes are required for physical substitution. However, circuit performance will differ due to the J-FET input topology of the TL034CPWR, which may require circuit validation in applications sensitive to input bias current or slew rate characteristics.

Q: What is the primary performance difference between the LM2902AT14-13 and TL034CPWR?

A: The TL034CPWR employs J-FET input stages, resulting in dramatically lower input bias current (2 pA versus 20 nA) and faster slew rate (5.1 V/µs versus 0.3 V/µs). These characteristics make the TL034CPWR superior for high-impedance input applications and high-frequency signal processing. The LM2902AT14-13 uses general-purpose bipolar input stages and is optimized for cost-sensitive, low-frequency applications.

Q: Why does the TL034CPWR have a narrower supply voltage range than the LM2902AT14-13?

A: The J-FET input topology of the TL034CPWR requires higher minimum supply voltage (10V) to maintain proper biasing of the input stage. The maximum supply voltage (30V) reflects the voltage rating of the internal J-FET devices. The LM2902AT14-13 uses bipolar input stages, which operate across a wider voltage range (3V to 36V) due to different biasing requirements.

Q: Is the TL034CPW a suitable substitute if the TL034CPWR is unavailable?

A: The TL034CPW provides identical electrical performance to the TL034CPWR and is functionally interchangeable. However, the TL034CPW carries Last Time Buy status with limited inventory (1900 units) and is supplied in Tube packaging rather than Tape & Reel. For applications requiring high-volume production or long-term availability, the TL034CPWR is the preferred choice.

Q: What applications require the wider supply voltage range of the LM2902AT14-13?

A: Applications operating from single-cell battery supplies (3V to 5V) or high-voltage industrial systems (above 30V) require the LM2902AT14-13. The TL034 variants cannot operate in these voltage ranges and are restricted to systems with regulated supplies between 10V and 30V.

Q: Are there temperature range restrictions when substituting with the TL034CPWR?

A: Yes. The TL034CPWR operates between 0°C and 70°C, while the LM2902AT14-13 operates between -40°C and 125°C. Applications requiring operation below 0°C or above 70°C must retain the LM2902AT14-13. Extended temperature applications cannot use the TL034 substitutes.

Q: Do both parts have identical moisture sensitivity requirements?

A: No. The LM2902AT14-13 has MSL 3 (168 hours), while the TL034CPWR has MSL 1 (unlimited). The TL034CPWR is less sensitive to moisture absorption and has less stringent storage and handling requirements. This represents an advantage for long-term inventory management and reduces bake-out requirements before soldering.

Q: Are there any regulatory or compliance differences between these parts?

A: All three parts (LM2902AT14-13, TL034CPW, and TL034CPWR) are ROHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8542.33.0001) classifications. No regulatory barriers exist to substitution from a compliance perspective.