THS3001CDR Equivalent & Substitute Parts

Part Overview

The THS3001CDR is a Current Feedback Amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device delivers high-speed amplification with a slew rate of 6500V/µs and a gain bandwidth product of 1.75 GHz, making it suitable for high-frequency signal conditioning applications. The THS3001CDR is classified as Obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while meeting current supply chain availability and compliance standards.

Substiute Parts

THS3001CDR

Texas InstrumentsIn Stock: 84900THS3001CDR Datasheet

Current PartRFQ

THS3001IDR

Texas InstrumentsIn Stock: 3813THS3001IDR Datasheet

MFR RecommendedRFQ

ISL28177FBZ

Renesas Electronics CorporationIn Stock: 1367ISL28177FBZ Datasheet

MFR RecommendedRFQ

ISL28177FBZ-T13

Renesas Electronics CorporationIn Stock: 2530ISL28177FBZ-T13 Datasheet

MFR RecommendedRFQ

ISL28177FBZ-T7

Renesas Electronics CorporationIn Stock: 1925ISL28177FBZ-T7 Datasheet

MFR RecommendedRFQ

LT1206CS8

Analog Devices Inc.In Stock: 2476LT1206CS8 Datasheet

MFR RecommendedRFQ

LT1206CS8#PBF

Analog Devices Inc.In Stock: 2033LT1206CS8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the THS3001CDR are grouped into two functional categories based on amplifier type and electrical performance characteristics:

Category 1: Current Feedback Amplifier Substitutes (Direct Functional Equivalents)

The THS3001IDR and LT1206CS8#PBF are current feedback amplifiers that maintain the same amplifier topology as the THS3001CDR. These parts share identical package geometry (8-SOIC), surface mount mounting type, and RoHS3 compliance. The THS3001IDR is the active product status equivalent from Texas Instruments with identical electrical specifications. The LT1206CS8#PBF from Analog Devices Inc. operates as a current feedback amplifier with different performance trade-offs: lower slew rate (900V/µs versus 6500V/µs) and lower bandwidth (60 MHz versus 420 MHz), but higher output current capability (1.2 A versus 120 mA).

Category 2: General Purpose Amplifier Substitutes (Functional Alternatives)

The ISL28177FBZ, ISL28177FBZ-T13, and ISL28177FBZ-T7 from Renesas Electronics Corporation are general purpose amplifiers that differ fundamentally in amplifier type from the main part. These devices share identical package geometry and surface mount characteristics but operate with significantly different electrical parameters: lower slew rate (0.2V/µs), lower bandwidth (600 kHz), and lower output current (30 mA). These substitutes are applicable only in applications where the lower performance envelope is acceptable.

Key Parameters Determining Substitution Eligibility:

• Amplifier Type (Current Feedback vs. General Purpose)
• Package / Case (8-SOIC form factor)
• Mounting Type (Surface Mount)
• Number of Circuits (1 circuit)
• Slew Rate and Bandwidth compatibility with application requirements
• Supply voltage range compatibility (9V to 33V minimum)
• Output current capability requirements

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: THS3001IDR

The THS3001IDR is the recommended primary substitute for the obsolete THS3001CDR. This part maintains identical electrical specifications including slew rate (6500V/µs), gain bandwidth product (1.75 GHz), and -3dB bandwidth (420 MHz). Both devices employ current feedback amplifier topology and share the 8-SOIC package geometry. The THS3001IDR carries Active product status, ensuring long-term supply availability and manufacturing support. Operating temperature range extends from -40°C to 85°C, providing broader environmental coverage than the original part (0°C to 70°C). Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Secondary Substitute: LT1206CS8#PBF

The LT1206CS8#PBF from Analog Devices Inc. serves as a secondary current feedback amplifier substitute when higher output current capability (1.2 A versus 120 mA) is required. This part maintains the current feedback amplifier topology and 8-SOIC package but operates with reduced slew rate (900V/µs) and bandwidth (60 MHz). Supply voltage range is narrower (10V to 30V versus 9V to 33V). This substitute is applicable only in applications where the lower frequency performance is acceptable and higher output current is beneficial. Product status is Active with ROHS3 compliance.

Alternative Substitutes: ISL28177FBZ, ISL28177FBZ-T13, ISL28177FBZ-T7

The Renesas Electronics Corporation ISL28177 series (ISL28177FBZ, ISL28177FBZ-T13, ISL28177FBZ-T7) represents general purpose amplifier alternatives with significantly reduced performance specifications. These parts operate with slew rate of 0.2V/µs and bandwidth of 600 kHz, making them unsuitable for high-frequency applications requiring the THS3001CDR's 6500V/µs slew rate and 420 MHz bandwidth. These substitutes are applicable only in low-frequency signal conditioning applications where performance requirements are substantially lower. All three variants share identical electrical specifications and differ only in packaging format (Tube versus Tape & Reel). All carry Active product status and ROHS3 compliance.

Selection Criteria Summary:

• For direct functional replacement: Select THS3001IDR
• For applications requiring higher output current: Select LT1206CS8#PBF
• For low-frequency applications only: Select ISL28177 series variants
• All substitutes maintain 8-SOIC surface mount package compatibility
• All substitutes meet ROHS3 and REACH compliance requirements

Frequently Asked Questions (FAQ)

Q1: Can the THS3001IDR directly replace the THS3001CDR in existing designs?

A: Yes. The THS3001IDR is the active equivalent of the obsolete THS3001CDR with identical electrical specifications. Both devices are current feedback amplifiers with 6500V/µs slew rate, 1.75 GHz gain bandwidth product, and 420 MHz -3dB bandwidth. Package geometry (8-SOIC) and mounting type (surface mount) are identical. The THS3001IDR extends operating temperature range to -40°C to 85°C, providing broader environmental coverage. Pin-for-pin compatibility is maintained.

Q2: What are the key differences between current feedback and general purpose amplifier substitutes?

A: Current feedback amplifiers (THS3001IDR, LT1206CS8#PBF) deliver high slew rate and wide bandwidth suitable for high-frequency applications. General purpose amplifiers (ISL28177 series) operate with significantly lower slew rate (0.2V/µs versus 6500V/µs) and bandwidth (600 kHz versus 420 MHz). Selection depends on application frequency requirements. High-frequency signal conditioning requires current feedback topology; low-frequency applications may accept general purpose amplifier performance.

Q3: Why does the LT1206CS8#PBF have lower bandwidth but higher output current than the THS3001CDR?

A: The LT1206CS8#PBF represents a different design trade-off within the current feedback amplifier category. This device prioritizes output current capability (1.2 A versus 120 mA) at the expense of bandwidth (60 MHz versus 420 MHz). Selection between these parts depends on whether the application requires high output current or wide bandwidth. Both cannot be simultaneously maximized in a single device.

Q4: Are the ISL28177FBZ, ISL28177FBZ-T13, and ISL28177FBZ-T7 interchangeable?

A: Yes, these three parts are electrically identical. Differences exist only in packaging format: ISL28177FBZ is supplied in Tube packaging, while ISL28177FBZ-T13 and ISL28177FBZ-T7 are supplied in Tape & Reel format. All three share identical electrical specifications and 8-SOIC package geometry. Selection depends on procurement and assembly requirements rather than electrical performance.

Q5: What is the significance of the operating temperature range difference between THS3001CDR and THS3001IDR?

A: The THS3001CDR operates from 0°C to 70°C, while the THS3001IDR extends to -40°C to 85°C. The broader range of the THS3001IDR provides greater environmental flexibility for applications requiring operation at elevated or reduced temperatures. If the original design operates only within 0°C to 70°C, both parts are functionally equivalent. Applications requiring extended temperature range benefit from the THS3001IDR's wider specification.

Q6: Can the ISL28177 series substitute for the THS3001CDR in high-frequency applications?

A: No. The ISL28177 series is unsuitable for high-frequency applications. With slew rate of 0.2V/µs and bandwidth of 600 kHz, these general purpose amplifiers cannot support the THS3001CDR's 6500V/µs slew rate and 420 MHz bandwidth requirements. Substitution is limited to applications where frequency requirements are substantially lower than the original specification.

Q7: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (THS3001IDR, LT1206CS8#PBF, ISL28177FBZ, ISL28177FBZ-T13, ISL28177FBZ-T7) are ROHS3 compliant. The original THS3001CDR is also ROHS3 compliant. All parts are REACH unaffected. Regulatory compliance is maintained across all substitution options.

Q8: What supply voltage considerations apply when selecting substitutes?

A: The THS3001CDR operates with supply voltage range of 9V to 33V. The THS3001IDR maintains identical range. The LT1206CS8#PBF operates from 10V to 30V, requiring minimum 10V supply and limiting maximum to 30V. The ISL28177 series operates from 6V to 40V, providing broader range. Verify supply voltage compatibility with application requirements before selecting substitutes.

Q9: How does input bias current differ among substitute options?

A: Input bias current varies significantly among substitutes. The THS3001CDR and THS3001IDR specify 2 µA. The LT1206CS8#PBF specifies 10 µA. The ISL28177 series specifies 200 pA (0.2 nA), substantially lower. Applications sensitive to input bias current effects should prioritize the ISL28177 series or maintain current feedback amplifier substitutes (THS3001IDR or LT1206CS8#PBF) depending on frequency requirements.

Q10: What inventory considerations apply to substitute selection?

A: Current inventory levels are: THS3001IDR (3782 pcs), ISL28177FBZ-T13 (2482 pcs), LT1206CS8#PBF (2003 pcs), ISL28177FBZ-T7 (1900 pcs), ISL28177FBZ (1320 pcs). The THS3001IDR offers highest immediate availability as the primary recommended substitute. All substitutes maintain active product status with ongoing manufacturing support, ensuring long-term supply continuity beyond current inventory levels.