THS3110CDR Equivalent & Substitute Parts

Part Overview

The THS3110CDR is a current feedback amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The THS3110CDR delivers a slew rate of 1300V/µs with a -3dB bandwidth of 100 MHz, suitable for high-speed signal conditioning applications. Identification of compatible alternatives ensures design continuity and supply chain flexibility.

Substiute Parts

THS3110CDR

Texas InstrumentsIn Stock: 777THS3110CDR Datasheet

Current PartRFQ

LT1223CS8

Linear TechnologyIn Stock: 2712LT1223CS8 Datasheet

MFR RecommendedRFQ

LT1223CS8#PBF

Analog Devices Inc.In Stock: 1258LT1223CS8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the THS3110CDR is determined by equivalence in the following critical parameters:

Functional Parameters:

• Amplifier Type: Current Feedback (required match)
• Number of Circuits: 1 (required match)
• Slew Rate: 1300V/µs (required match)
• -3dB Bandwidth: 100 MHz (required match)

Physical Parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) (required match)
• Mounting Type: Surface Mount (required match)

Operating Parameters:

• Operating Temperature Range: 0°C to 70°C (required match)
• Voltage Supply Span: Minimum 10V, Maximum 30V (substitute must support this range)

The substitute parts LT1223CS8 and LT1223CS8#PBF satisfy all functional and physical equivalence criteria. Both devices maintain identical slew rate and bandwidth specifications, operate within the required temperature range, and utilize the same 8-SOIC package footprint.

Parameter Comparison

Engineering Selection Recommendations

For RoHS3 and REACH Compliance Requirements: LT1223CS8#PBF is the appropriate substitute. This part maintains ROHS3 compliance and REACH unaffected status, matching the regulatory posture of the original THS3110CDR. The device is actively manufactured by Analog Devices Inc., ensuring long-term supply availability.

For Applications Without Regulatory Constraints: LT1223CS8 (Linear Technology) provides functional equivalence and active product status. This variant is available in bulk packaging and represents an alternative when compliance certifications are not mandatory.

Supply Chain Considerations: Both substitute parts are in active production status, contrasting with the obsolete THS3110CDR. Current inventory levels for LT1223CS8 (2666 units) and LT1223CS8#PBF (1166 units) support immediate procurement requirements.

Electrical Performance: The substitute parts demonstrate improved input bias current (1 µA versus 1.5 µA) and reduced input offset voltage (1 mV versus 3 mV), representing enhanced precision characteristics. The expanded supply voltage range (8V to 36V versus 10V to 30V) provides greater design flexibility. These improvements are compatible with existing circuit designs utilizing the THS3110CDR.

Frequently Asked Questions (FAQ)

Q: Can LT1223CS8 and LT1223CS8#PBF be used interchangeably with THS3110CDR?

A: Both LT1223 variants are functionally equivalent to the THS3110CDR. They share identical slew rate (1300V/µs), bandwidth (100 MHz), package footprint (8-SOIC), and operating temperature range (0°C to 70°C). Pin-for-pin compatibility exists for standard current feedback amplifier applications.

Q: What is the difference between LT1223CS8 and LT1223CS8#PBF?

A: Both parts are electrically identical. The primary differences are packaging format (Bulk versus Tube) and regulatory compliance. LT1223CS8#PBF carries ROHS3 compliance and REACH unaffected status, while LT1223CS8 is RoHS non-compliant and REACH affected. Selection depends on regulatory requirements for the end application.

Q: Are there supply voltage compatibility concerns when substituting?

A: The THS3110CDR operates from 10V to 30V. Both LT1223 substitutes operate from 8V to 36V, providing a wider operating range that fully encompasses the original specification. Designs operating within the 10V to 30V window require no modification.

Q: How do the improved input characteristics of LT1223 variants affect circuit design?

A: The LT1223 series exhibits lower input bias current (1 µA versus 1.5 µA) and reduced input offset voltage (1 mV versus 3 mV). These improvements enhance precision in transimpedance and transadmittance configurations. Existing designs will experience improved performance without circuit modification.

Q: What is the significance of the product status difference?

A: The THS3110CDR is classified as obsolete, indicating discontinued manufacturing and limited future availability. Both LT1223 variants maintain active product status, ensuring continued supply and manufacturer support. New designs should utilize active parts to avoid future obsolescence issues.

Q: Are there output current limitations when substituting?

A: The THS3110CDR specifies 260 mA output current per channel. LT1223CS8 specifies 60 mA output current. Applications requiring the full 260 mA output capability must verify that the LT1223 output current rating is sufficient for the intended load. Circuit redesign may be necessary for high-current output stages.