THS3125IPWPR Equivalent & Substitute Parts

Part Overview

The THS3125IPWPR is a current feedback amplifier integrated circuit manufactured by Texas Instruments, configured with 2 circuits in a 14-HTSSOP surface mount package. This device is classified as a Last Time Buy product, indicating that the manufacturer has discontinued or will discontinue production. The identification of equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications requiring current feedback amplification.

Substiute Parts

THS3125IPWPR

Texas InstrumentsIn Stock: 839THS3125IPWPR Datasheet

Current PartRFQ

THS3115IPWPR

Texas InstrumentsIn Stock: 958THS3115IPWPR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the THS3125IPWPR is determined by the following critical parameters:

Functional Compatibility Parameters:

• Amplifier Type: Current Feedback architecture
• Number of Circuits: 2 independent amplifier circuits
• Package / Case: 14-PowerTSSOP form factor with identical 0.173" (4.40mm) width
• Mounting Type: Surface Mount technology
• Operating Temperature Range: -40°C to 85°C

Electrical Compatibility Parameters:

• Voltage - Supply Span: 10 V minimum to 30 V maximum
• Slew Rate: 1550 V/µs (identical across substitutes)
• Current - Output / Channel: Must support 440 mA or greater
• Current - Supply: Must operate within specified supply current envelope

Compliance & Regulatory Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 2 (1 Year)
• REACH Status: REACH Unaffected
• ECCN: EAR99

The THS3115IPWPR qualifies as a substitute based on matching all functional compatibility parameters, identical package specifications, and equivalent compliance certifications. Electrical parameter variations exist in bandwidth, input bias current, and supply current characteristics, which must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

THS3115IPWPR as Primary Substitute:

The THS3115IPWPR is the manufacturer-recommended substitute for the THS3125IPWPR. This substitution is supported by the following factors:

Product Status Alignment: The THS3125IPWPR carries Last Time Buy status, indicating end-of-life production. The THS3115IPWPR maintains Active product status, ensuring continued availability and long-term supply chain support.

Compliance & Regulatory Equivalence: Both devices maintain identical RoHS3 compliance, Moisture Sensitivity Level 2 (1 Year), REACH Unaffected status, and ECCN EAR99 classification. No regulatory or environmental compliance barriers exist for substitution.

Package & Mounting Compatibility: Both devices utilize the 14-PowerTSSOP surface mount package with identical 0.173" (4.40mm) width specifications. PCB layout, footprint, and assembly processes remain unchanged.

Electrical Parameter Considerations: The THS3115IPWPR exhibits lower input bias current (330 nA versus 6 µA), reduced input offset voltage (3 mV versus 4.4 mV), and lower supply current consumption (4.9 mA versus 8.4 mA). The -3dB bandwidth is reduced from 160 MHz to 110 MHz. Output current per channel is reduced from 440 mA to 270 mA. These differences require application-level evaluation to confirm compatibility with specific circuit requirements.

Supply Voltage Compatibility: Both devices operate across the identical 10 V to 30 V supply span, ensuring direct compatibility in existing power distribution architectures.

Frequently Asked Questions (FAQ)

Q: Can the THS3115IPWPR be used as a direct pin-for-pin replacement for the THS3125IPWPR?

A: Yes. Both devices share the 14-PowerTSSOP package with identical pinout and footprint specifications. No PCB modifications are required for physical substitution.

Q: What are the key electrical differences between these devices?

A: The THS3115IPWPR provides improved input bias current (330 nA versus 6 µA) and lower input offset voltage (3 mV versus 4.4 mV). However, the -3dB bandwidth is reduced from 160 MHz to 110 MHz, and output current per channel decreases from 440 mA to 270 mA. Supply current consumption is also lower at 4.9 mA versus 8.4 mA.

Q: Is the THS3115IPWPR suitable for high-frequency applications requiring 160 MHz bandwidth?

A: The THS3115IPWPR operates at 110 MHz -3dB bandwidth, which is lower than the THS3125IPWPR specification of 160 MHz. Applications requiring the full 160 MHz bandwidth must evaluate whether 110 MHz meets functional requirements.

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

A: No. Both devices maintain identical RoHS3 compliance, Moisture Sensitivity Level 2 (1 Year), REACH Unaffected status, and ECCN EAR99 classification.

Q: Why is the THS3125IPWPR designated as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued or will discontinue production of this device. The THS3115IPWPR, with Active product status, represents the current production alternative.

Q: What is the impact of reduced output current (270 mA versus 440 mA) on circuit design?

A: Applications requiring output currents exceeding 270 mA per channel must be redesigned or require external current amplification stages. Circuits operating within the 270 mA limit per channel are unaffected.

Q: Can both devices operate across the same supply voltage range?

A: Yes. Both the THS3125IPWPR and THS3115IPWPR operate across the identical 10 V to 30 V supply span, ensuring compatibility in existing power supply architectures.

Q: What is the slew rate specification for both devices?

A: Both devices maintain an identical slew rate of 1550 V/µs, ensuring equivalent transient response characteristics.