THS3121IDGNG4 Equivalent & Substitute Parts

Part Overview

The THS3121IDGNG4 is a current feedback amplifier integrated circuit manufactured by Texas Instruments, designed for high-speed signal processing applications. This device features a single amplifier circuit in an 8-HVSSOP surface mount package with a slew rate of 1700V/µs and -3dB bandwidth of 130 MHz.

The THS3121IDGNG4 is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications. The substitute part identified maintains identical electrical and mechanical specifications while offering active product status and improved inventory availability.

Substiute Parts

THS3121IDGNG4

Texas InstrumentsIn Stock: 1195THS3121IDGNG4 Datasheet

Current PartRFQ

THS3121IDGN

Texas InstrumentsIn Stock: 2146THS3121IDGN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the THS3121IDGNG4 is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Amplifier Type: Current Feedback
• Slew Rate: 1700 V/µs
• -3dB Bandwidth: 130 MHz
• Current - Input Bias: 3 µA
• Voltage - Input Offset: 2 mV
• Current - Supply: 7 mA
• Current - Output / Channel: 490 mA
• Supply Voltage Range: 10 V to 30 V
• Operating Temperature Range: -40°C to 85°C

Mechanical Specifications:

• Package Type: 8-HVSSOP (8-TSSOP, 8-MSOP with 0.118", 3.00mm Width Exposed Pad)
• Mounting Type: Surface Mount
• Number of Circuits: 1

Compliance & Certification:

• RoHS3 Compliance
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

The substitute part THS3121IDGN matches all electrical, mechanical, and compliance parameters specified above, with the primary difference being packaging format (Tube versus the original specification) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The THS3121IDGN is a direct functional equivalent to the THS3121IDGNG4 for applications requiring a current feedback amplifier with 1700V/µs slew rate and 130 MHz bandwidth in an 8-HVSSOP package.

Selection Basis:

1. Electrical Equivalence: All electrical parameters are identical, including slew rate, bandwidth, bias current, input offset voltage, supply current, output current capability, and supply voltage range.

2. Mechanical Compatibility: Both parts utilize the same 8-HVSSOP package with identical pin configuration and exposed pad design, ensuring direct PCB layout compatibility.

3. Compliance Alignment: Both parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status, meeting regulatory requirements for equivalent applications.

4. Product Status: The THS3121IDGN maintains active product status with Texas Instruments, ensuring long-term availability and continued manufacturing support compared to the discontinued THS3121IDGNG4.

5. Inventory Availability: The substitute part demonstrates higher inventory availability (2100 Pcs versus 1088 Pcs), supporting production continuity.

The primary distinction between these parts is packaging format (Tube for the substitute versus unspecified for the main part) and product lifecycle status. This distinction does not affect electrical or mechanical performance in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can THS3121IDGN be used as a direct replacement for THS3121IDGNG4 in existing designs?

A: Yes. The THS3121IDGN is electrically and mechanically equivalent to the THS3121IDGNG4. All electrical specifications, package dimensions, pin configuration, and compliance certifications are identical. Direct substitution is supported without circuit modification.

Q: What is the difference between THS3121IDGNG4 and THS3121IDGN?

A: The primary differences are packaging format (Tube for THS3121IDGN) and product status (Active for THS3121IDGN versus Discontinued for THS3121IDGNG4). Electrical and mechanical specifications are identical.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts share identical electrical specifications including slew rate (1700V/µs), bandwidth (130 MHz), supply current (7 mA), and output current capability (490 mA). Operating temperature range is identical (-40°C to 85°C).

Q: Is the 8-HVSSOP package compatible with standard PCB assembly equipment?

A: Yes. The 8-HVSSOP package is a surface mount package with standard pitch and dimensions (0.118", 3.00mm Width) compatible with conventional pick-and-place and reflow soldering processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both THS3121IDGNG4 and THS3121IDGN are ROHS3 compliant, have MSL 1 (Unlimited) moisture sensitivity level, and are REACH unaffected.

Q: What is the base product number for these parts?

A: The base product number is THS3121. Both THS3121IDGNG4 and THS3121IDGN are variants of this base product with identical core specifications.