LT1497CS8#TRPBF Equivalent & Substitute Parts

Part Overview

The LT1497CS8#TRPBF is a current feedback amplifier manufactured by Analog Devices Inc., configured as a dual-circuit operational amplifier in an 8-SOIC surface mount package. This device is classified as Active product status and is suitable for high-speed signal conditioning applications requiring slew rates up to 900V/µs and bandwidth performance of 50 MHz. Substitute parts become necessary when the primary device reaches end-of-life status, inventory constraints occur, or application requirements demand enhanced performance specifications such as higher bandwidth, improved input bias current characteristics, or extended operating temperature ranges.

Substiute Parts

LT1497CS8#TRPBF

Analog Devices Inc.In Stock: 9591LT1497CS8#TRPBF Datasheet

Current PartRFQ

THS3112ID

Texas InstrumentsIn Stock: 1177THS3112ID Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LT1497CS8#TRPBF is determined by compatibility across the following critical parameters: amplifier topology (current feedback configuration), circuit count (dual-circuit design), package form factor (8-SOIC surface mount), and electrical operating ranges (supply voltage span and temperature range). The substitute part THS3112ID from Texas Instruments maintains the same amplifier type, circuit count, and package geometry, enabling direct functional replacement in applications where the enhanced performance characteristics do not create circuit design conflicts. Substitution is valid when the substitute part's electrical specifications meet or exceed the minimum requirements of the original design while remaining within the maximum ratings of the application circuit.

Parameter Comparison

Engineering Selection Recommendations

The LT1497CS8#TRPBF maintains Active product status with full manufacturing support and availability. The THS3112ID substitute is designated Last Time Buy status, indicating limited future availability and no new production. Selection between these devices depends on application timeline and supply chain requirements. Both devices are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards. The THS3112ID provides enhanced performance specifications including higher slew rate (1550V/µs versus 900V/µs), increased bandwidth (110 MHz versus 50 MHz), lower input bias current (330 nA versus 7 µA), and extended operating temperature range (-40°C to 85°C versus 0°C to 70°C). However, the THS3112ID requires minimum supply voltage of 10V compared to 5V for the LT1497CS8#TRPBF, which may restrict its use in low-voltage applications. For new designs or long-term production, the LT1497CS8#TRPBF is the preferred selection due to Active status. For existing designs currently using THS3112ID, transition to LT1497CS8#TRPBF is feasible provided the application supply voltage meets the 5V minimum requirement and the lower performance specifications are acceptable.

Frequently Asked Questions (FAQ)

Q: Can THS3112ID directly replace LT1497CS8#TRPBF in existing circuit designs?

A: Direct replacement is possible when the application circuit operates at supply voltages of 10V or higher. The THS3112ID requires a minimum supply voltage of 10V, whereas the LT1497CS8#TRPBF operates from 5V minimum. Both devices share identical 8-SOIC package geometry and pinout configuration. Circuit performance will improve with THS3112ID due to higher bandwidth and slew rate, but this may require output load impedance verification to ensure stability.

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

A: The THS3112ID provides superior dynamic performance with 1550V/µs slew rate and 110 MHz bandwidth compared to 900V/µs and 50 MHz for the LT1497CS8#TRPBF. Input bias current is significantly lower in THS3112ID at 330 nA versus 7 µA. Supply current consumption is lower in THS3112ID at 4.9 mA versus 7 mA per dual-channel configuration. Output current capability is higher in THS3112ID at 270 mA per channel versus 220 mA.

Q: Are there packaging or mounting differences between these parts?

A: Both devices use identical 8-SOIC surface mount packaging with 0.154-inch (3.90mm) width. Pinout and footprint are compatible, enabling direct PCB layout substitution without redesign.

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

A: LT1497CS8#TRPBF is Active status, indicating ongoing manufacturing and long-term availability. THS3112ID is Last Time Buy status, meaning production is ending and future availability is limited. For new designs or production quantities requiring multi-year supply, LT1497CS8#TRPBF is the appropriate selection.

Q: Do both devices meet current compliance standards?

A: Both devices are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements. Moisture Sensitivity Level is 1 (Unlimited) for both, indicating no special moisture handling requirements during storage or assembly.

Q: What is the minimum supply voltage requirement for each device?

A: LT1497CS8#TRPBF operates with minimum supply voltage of 5V. THS3112ID requires minimum supply voltage of 10V. This difference is critical for low-voltage applications where 5V supplies are used.