Analog Devices Inc. LT1359IS14#TRPBF

Overview

LT1359IS14#TRPBF from Analog Devices (formerly Linear Technology) is a quad high-speed voltage-feedback operational amplifier with 25MHz gain bandwidth, 600V/µs slew rate, and ±15V supply capability. It delivers ±12.5V output swing into 500Ω, features C-Load™ stability with any capacitive load, and is specified for –40°C to 85°C operation - ideal for precision data acquisition systems requiring fast settling and low distortion.

For engineers reviewing the LT1359IS14#TRPBF datasheet, LT1359IS14#TRPBF pinout, LT1359IS14#TRPBF application, or LT1359IS14#TRPBF equivalent, key selection criteria include guaranteed 0.01% settling in 220ns at ±15V, input offset voltage ≤0.8mV over temperature, unity-gain stability, and SO-14 package compatibility with high-density PCB layouts.

Technical Context

The LT1359IS14#TRPBF employs a unique hybrid topology combining voltage-feedback architecture with current-feedback slewing behavior, enabling both high DC precision and exceptional transient response. Its matched high-impedance inputs, single-stage design, and bootstrapped RC compensation network ensure stable operation into unlimited capacitive loads while maintaining >98dB channel separation at ±15V.

This amplifier is optimized for closed-loop applications including active filtering, photodiode transimpedance stages, and DAC I-to-V conversion. It is not intended for sustained open-loop use (e.g., comparator mode), as large differential inputs induce excessive supply current and thermal stress.

Key Specifications

Pinout & Package

LT1359IS14#TRPBF is housed in a 14-lead plastic SOIC (SO-14) package with 1.27mm pitch, JEDEC MS-012AC compliant, and rated for 160°C/W junction-to-ambient thermal resistance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad high-speed op amp applications.

Compared with LT1359IS14#TRPBF, LT1364CS14#TRPBF trades 2× power for 2× bandwidth and faster settling, while LT1355IS14#TRPBF reduces power by 60% at the cost of 50% bandwidth - making LT1359IS14#TRPBF the optimal balance for 1–10MHz precision analog signal chains.

Availability

LT1359IS14#TRPBF is available at Aetrix Electronics and suitable for data acquisition systems, active filter modules, photodiode amplifier circuits, and DAC output conditioning requiring stable component supply across industrial temperature ranges.

Supply support for LT1359IS14#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices acquired Linear Technology in 2017 and maintains its high-performance analog portfolio, emphasizing precision, speed, and reliability in signal conditioning ICs.

The LT1359 product line was designed for demanding analog signal-path applications where speed, DC accuracy, and capacitive-load drive coexist - particularly in test equipment, medical imaging front-ends, and high-fidelity data converters.

FAQ

What is the maximum capacitive load the LT1359IS14#TRPBF can drive while remaining stable?

The LT1359IS14#TRPBF is C-Load™ certified for unconditional stability with any capacitive load, including direct drive of coaxial cables and large ceramic bypass capacitors. Unlike conventional op-amps, it does not require series isolation resistors regardless of load capacitance - a key advantage verified in the datasheet's Figure 30 and Applications Information section.

Does the LT1359IS14#TRPBF support ±2.5V single-supply operation?

Yes, the LT1359IS14#TRPBF is fully specified from ±2.5V to ±15V supplies. At ±2.5V, it delivers ±1.2V output swing into 500Ω, 14MHz gain bandwidth, and 100V/µs slew rate - enabling low-voltage portable instrumentation while retaining 0.01% settling performance.

What is the guaranteed input offset voltage specification for LT1359IS14#TRPBF over temperature?

The LT1359IS14#TRPBF guarantees ≤0.8mV maximum input offset voltage across its full operating range of –40°C to 85°C, as confirmed in the "Electrical Characteristics" table under the "I Grade" column with ● symbol denoting –40°C to 85°C coverage.

Can LT1359IS14#TRPBF be used as a comparator?

No - the LT1359IS14#TRPBF is not designed for open-loop comparator use. Sustained differential input voltages >±10V cause excessive supply current and thermal stress, risking permanent damage. Its architecture is optimized for closed-loop linear operation only, as explicitly warned in the "Input Considerations" section.

How does LT1359IS14#TRPBF achieve 0.01% settling in 220ns?

The LT1359IS14#TRPBF achieves 220ns 0.01% settling via its single-stage voltage-feedback topology with current-feedback slewing behavior, low-output-impedance complementary emitter-follower output stage, and optimized internal compensation that avoids peaking - all validated in Figure G11 and G12 of the datasheet under ±15V, AV = –1 conditions.