THS4304DBVR Equivalent & Substitute Parts

Part Overview

The THS4304DBVR is a voltage feedback amplifier manufactured by Texas Instruments, designed for high-speed signal conditioning applications. This single-circuit operational amplifier is packaged in SOT-23-5 surface mount configuration and is currently in active production status. The device operates across a 2.7 V to 5 V supply range with a slew rate of 830 V/µs and gain bandwidth product of 870 MHz, making it suitable for applications requiring fast transient response and wide bandwidth performance.

Substitute parts are identified when equivalent functional performance can be achieved within the constraints of the application circuit, considering packaging compatibility, electrical parameter ranges, and supply voltage requirements.

Substiute Parts

THS4304DBVR

Texas InstrumentsIn Stock: 496609THS4304DBVR Datasheet

Current PartRFQ

AD8538AUJZ-REEL7

Analog Devices Inc.In Stock: 11939AD8538AUJZ-REEL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the THS4304DBVR is evaluated based on the following criteria derived from the provided electrical and mechanical parameters:

Package Compatibility: The substitute part must be housed in SOT-23-5 or equivalent thin-profile surface mount packaging to ensure physical compatibility with existing PCB layouts and assembly processes.

Supply Voltage Range: The substitute must operate within or encompass the 2.7 V to 5 V supply voltage specification of the primary part. Extended supply ranges are acceptable provided minimum and maximum ratings do not fall below or exceed these limits.

Single Circuit Configuration: Only single-channel amplifier devices qualify as direct substitutes, maintaining the same functional density per package.

Compliance and Certifications: Both parts must maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status to ensure regulatory and environmental compatibility.

Electrical Performance Envelope: Substitute parts must demonstrate electrical characteristics that do not degrade critical application performance. Input bias current, input offset voltage, slew rate, and bandwidth parameters are evaluated for functional equivalence within the application context.

The AD8538AUJZ-REEL7 qualifies as a substitute based on package compatibility (TSOT-23-5), supply voltage overlap (2.7 V to 5.5 V), single-circuit configuration, and full compliance certification alignment.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The THS4304DBVR remains the specified component for applications requiring the stated voltage feedback amplifier topology, 870 MHz gain bandwidth product, and 830 V/µs slew rate performance envelope. This device is in active production with 496,508 units in current inventory stock.

Substitute Part Applicability: The AD8538AUJZ-REEL7 is qualified as a substitute only in applications where the zero-drift amplifier topology and reduced bandwidth characteristics (430 kHz gain bandwidth product) are functionally acceptable. This substitute exhibits significantly lower slew rate (0.4 V/µs versus 830 V/µs) and reduced supply current (150 µA versus 18 mA), making it suitable for precision, low-speed signal conditioning applications rather than high-speed transient applications.

Compliance Alignment: Both devices maintain identical regulatory compliance status: ROHS3 compliant, MSL Level 1, REACH unaffected, and EAR99 ECCN classification. Both are suitable for applications requiring environmental and regulatory certification.

Supply Voltage Consideration: The AD8538AUJZ-REEL7 supports an extended maximum supply voltage of 5.5 V compared to the THS4304DBVR maximum of 5 V. Both devices share the 2.7 V minimum supply voltage specification.

Temperature Operating Range: The AD8538AUJZ-REEL7 extends the upper operating temperature limit to 125°C versus 85°C for the THS4304DBVR, providing enhanced thermal margin in elevated-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the AD8538AUJZ-REEL7 directly replace the THS4304DBVR in existing circuit designs?

A: Physical package compatibility exists (both SOT-23-5 surface mount), and pin configurations align for direct socket substitution. However, electrical performance differs significantly. The AD8538AUJZ-REEL7 is a zero-drift amplifier with 430 kHz bandwidth and 0.4 V/µs slew rate, compared to the THS4304DBVR voltage feedback amplifier with 870 MHz bandwidth and 830 V/µs slew rate. Substitution is valid only if the application circuit can function with reduced bandwidth and slew rate specifications.

Q: What are the key electrical differences between these two parts?

A: The THS4304DBVR provides higher speed performance with 870 MHz gain bandwidth product and 830 V/µs slew rate, suitable for wideband signal conditioning. The AD8538AUJZ-REEL7 prioritizes precision with 5 µV input offset voltage (versus 500 µV) and 15 pA input bias current (versus 7 µA), with significantly lower supply current consumption (150 µA versus 18 mA). Amplifier topology differs: voltage feedback versus zero-drift.

Q: Are both parts available in the same packaging?

A: Both devices are packaged in SOT-23-5 surface mount configuration. The THS4304DBVR uses SC-74A / SOT-753 designation, while the AD8538AUJZ-REEL7 uses TSOT-23-5 (thin variant). Physical dimensions and pin spacing are compatible for PCB layout purposes.

Q: What is the supply current difference, and does it matter?

A: The THS4304DBVR draws 18 mA supply current, while the AD8538AUJZ-REEL7 draws 150 µA. This 120-fold reduction in the substitute part is a direct consequence of the lower bandwidth and slew rate specifications. For battery-powered or power-constrained applications, the AD8538AUJZ-REEL7 offers significant power efficiency advantages.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the THS4304DBVR and AD8538AUJZ-REEL7 are ROHS3 compliant, carry MSL Level 1 (unlimited moisture sensitivity), are REACH unaffected, and share EAR99 ECCN classification. Regulatory substitution is fully supported.

Q: Which part should be selected for high-speed applications?

A: The THS4304DBVR is specified for high-speed applications requiring 870 MHz bandwidth and 830 V/µs slew rate. The AD8538AUJZ-REEL7, with 430 kHz bandwidth and 0.4 V/µs slew rate, is not suitable for high-speed transient or wideband signal conditioning applications.

Q: Can the AD8538AUJZ-REEL7 be used in precision measurement circuits?

A: Yes. The AD8538AUJZ-REEL7 zero-drift topology provides superior precision characteristics: 5 µV input offset voltage and 15 pA input bias current, compared to 500 µV and 7 µA respectively for the THS4304DBVR. This makes the substitute part advantageous for precision DC and low-frequency measurement applications.