THS4012CDG4 Equivalent & Substitute Parts

Part Overview

The THS4012CDG4 is a voltage feedback amplifier integrated circuit manufactured by Texas Instruments, containing 2 circuits in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production continuity. The THS4012CDG4 operates across a wide supply voltage range of 9V to 32V and delivers high slew rate performance of 310V/µs with a gain bandwidth product of 290 MHz, making it suitable for high-speed signal conditioning applications.

Substiute Parts

THS4012CDG4

Texas InstrumentsIn Stock: 822THS4012CDG4 Datasheet

Current PartRFQ

THS4012CD

Texas InstrumentsIn Stock: 1396THS4012CD Datasheet

MFR RecommendedRFQ

LT1469CS8

Analog Devices Inc.In Stock: 1296LT1469CS8 Datasheet

MFR RecommendedRFQ

LT1469CS8#PBF

Analog Devices Inc.In Stock: 2420LT1469CS8#PBF Datasheet

MFR RecommendedRFQ

LT1469CS8#TRPBF

Analog Devices Inc.In Stock: 2285LT1469CS8#TRPBF Datasheet

MFR RecommendedRFQ

LT1469IS8#PBF

Analog Devices Inc.In Stock: 2532LT1469IS8#PBF Datasheet

MFR RecommendedRFQ

LT1469IS8#TRPBF

Analog Devices Inc.In Stock: 2034LT1469IS8#TRPBF Datasheet

MFR RecommendedRFQ

THS4011CD

Texas InstrumentsIn Stock: 1262THS4011CD Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the THS4012CDG4 are categorized based on strict electrical and mechanical compatibility criteria:

Primary Substitute (Direct Replacement): The THS4012CD represents the direct functional equivalent, maintaining identical electrical specifications including voltage feedback amplifier topology, 2-circuit configuration, 310V/µs slew rate, 290 MHz gain bandwidth product, and 9V to 32V supply voltage range. The primary distinction is product status: THS4012CD is active, whereas THS4012CDG4 is obsolete. Packaging differs only in form factor (Tube vs. unspecified for the original).

Secondary Substitutes (Parametric Equivalents with Operational Constraints): The LT1469 series (LT1469CS8, LT1469CS8#PBF, LT1469CS8#TRPBF, LT1469IS8#PBF, LT1469IS8#TRPBF) from Analog Devices Inc. provides functional substitution with the following critical parameter differences:

• Amplifier Type: General Purpose (vs. Voltage Feedback)
• Slew Rate: 22V/µs (vs. 310V/µs) — 14× reduction
• Gain Bandwidth Product: 90 MHz (vs. 290 MHz) — 3.2× reduction
• Supply Voltage Range: 5V to 9V (vs. 9V to 32V) — narrower range
• Input Bias Current: 3 nA (vs. 2 µA) — superior performance
• Input Offset Voltage: 50 µV (vs. 1 mV) — superior performance

The LT1469 variants differ in temperature range and packaging: LT1469CS8 and LT1469CS8#PBF operate at 0°C to 70°C (matching THS4012CDG4), while LT1469IS8#PBF and LT1469IS8#TRPBF extend to -40°C to 85°C. Packaging variants include Tube and Tape & Reel (TR) options.

Tertiary Substitute (Parametric Equivalent with Circuit Count Difference): The THS4011CD is a single-circuit voltage feedback amplifier from Texas Instruments with identical electrical performance per channel (310V/µs slew rate, 290 MHz bandwidth, 9V to 32V supply) but contains only 1 circuit instead of 2. This part is active and suitable for applications requiring only one amplifier channel.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Choice): Select THS4012CD when obsolescence of THS4012CDG4 requires component substitution. This part maintains 100% electrical equivalence across all specified parameters and operates within the identical 0°C to 70°C temperature range. Both parts are ROHS3 compliant with MSL 1 rating. The only distinction is active product status, ensuring long-term availability and supply chain continuity. Packaging options include Tube format.

For Extended Temperature Range Applications: If the application requires operation beyond 0°C to 70°C, select LT1469IS8#PBF or LT1469IS8#TRPBF, which extend the operating temperature range to -40°C to 85°C. These parts maintain the same electrical specifications as other LT1469 variants but are suitable for industrial and automotive environments. Packaging options include Tube and Tape & Reel formats.

For Single-Channel Requirements: Select THS4011CD when the application requires only one amplifier channel. This part preserves the voltage feedback topology, 310V/µs slew rate, 290 MHz bandwidth, and 9V to 32V supply voltage range of the original THS4012CDG4, with identical per-channel performance. Product status is active, ensuring availability.

For Low-Speed, Low-Power Applications: The LT1469 series (all variants) is suitable only for applications where the reduced slew rate (22V/µs vs. 310V/µs) and reduced bandwidth (90 MHz vs. 290 MHz) are acceptable. These parts offer superior input offset voltage (50 µV vs. 1 mV) and input bias current (3 nA vs. 2 µA), making them preferable for precision, low-frequency signal conditioning. However, the narrower supply voltage range (5V to 9V vs. 9V to 32V) restricts use in high-voltage applications. All LT1469 variants are ROHS3 compliant with MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can LT1469CS8 directly replace THS4012CDG4 in all applications?

A: No. While both are 2-circuit amplifiers in 8-SOIC packages with ROHS3 compliance, the LT1469CS8 has significantly reduced performance specifications. The slew rate is 22V/µs compared to 310V/µs, and the gain bandwidth product is 90 MHz compared to 290 MHz. Additionally, the supply voltage range is limited to 5V to 9V versus 9V to 32V. Substitution is valid only for low-speed applications where these reduced specifications are acceptable.

Q: What is the difference between LT1469CS8#PBF and LT1469CS8#TRPBF?

A: Both parts are electrically identical. The primary difference is packaging format: LT1469CS8#PBF is supplied in Tube packaging, while LT1469CS8#TRPBF is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements and volume handling procedures.

Q: Why is THS4012CD preferred over LT1469 variants?

A: THS4012CD maintains 100% electrical equivalence to the obsolete THS4012CDG4 across all critical parameters: 310V/µs slew rate, 290 MHz bandwidth, 9V to 32V supply range, and 110 mA output current per channel. The LT1469 series sacrifices performance in these areas. THS4012CD is the appropriate choice for applications requiring the original performance envelope.

Q: Can THS4011CD be used in place of THS4012CDG4?

A: THS4011CD is suitable only if the application requires a single amplifier channel. It preserves all electrical performance specifications of THS4012CDG4 on a per-channel basis (310V/µs slew rate, 290 MHz bandwidth, 9V to 32V supply, 110 mA output current). Designs requiring two independent amplifier channels must use THS4012CD or equivalent dual-channel parts.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts—THS4012CD, LT1469CS8, LT1469CS8#PBF, LT1469CS8#TRPBF, LT1469IS8#PBF, LT1469IS8#TRPBF, and THS4011CD—are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of THS4012CDG4.

Q: What is the temperature range difference between LT1469CS8 and LT1469IS8?

A: LT1469CS8 (all packaging variants) operates from 0°C to 70°C, matching the original THS4012CDG4 temperature range. LT1469IS8#PBF and LT1469IS8#TRPBF extend the operating range to -40°C to 85°C, suitable for extended industrial and automotive applications. All other electrical specifications remain identical between these variants.

Q: Is the 8-SOIC package identical across all substitute parts?

A: Yes. All substitute parts use the 8-SOIC package with dimensions of 0.154" width and 3.90mm width, ensuring mechanical compatibility with the original THS4012CDG4 footprint. Surface mount assembly processes remain unchanged.