Analog Devices Inc. LT1413S8#TRPBF

Overview

LT1413S8#TRPBF from Analog Devices (acquired Linear Technology) is a dual, single-supply precision operational amplifier optimized for 5V systems. It features rail-to-ground output swing (≤25 mV low saturation), input common-mode range extending 0.3 V below ground, 380 µV max input offset voltage (S8 package), 0.8 nA max input offset current, and 950 kHz gain-bandwidth product - enabling high-accuracy signal conditioning in battery-powered instrumentation.

For engineers reviewing the LT1413S8#TRPBF datasheet, LT1413S8#TRPBF pinout, LT1413S8#TRPBF application, or LT1413S8#TRPBF equivalent, key selection criteria include guaranteed phase reversal protection, ±15V/5V dual-supply compatibility, SO-8 thermal performance (θ_JA = 130°C/W), and validated operation down to 2.85 V supply - critical for low-voltage sensor front-ends and portable medical devices.

Technical Context

The LT1413S8#TRPBF implements a proprietary input stage with integrated 400 Ω series resistors and active phase reversal protection circuitry (Q21–Q28), preventing output inversion when inputs drop to –1.5 V - a failure mode common in LM324/LM358-class amplifiers. Its architecture achieves 140 dB channel separation and 101 dB CMRR at 0–3.65 V common-mode range under 5V operation.

It delivers 10 mA output sink capability while maintaining 330–480 µA per-amplifier quiescent current, enabling direct interface with 600 Ω loads without external pull-downs. The device's 0.55 µV_P-P (0.1–10 Hz) noise and 0.5 µV/°C offset drift support precision DC-coupled applications such as strain gauge bridges and active filters requiring stable baseline accuracy over temperature.

Key Specifications

Pinout & Package

LT1413S8#TRPBF uses an 8-lead plastic SOIC (SO-8) package with industry-standard LT1013DS8 pinout. Thermal resistance is θ_JA = 130°C/W, supporting continuous operation at ambient temperatures up to 75°C with no derating in typical PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual precision op amp applications.

Compared with LT1013DS8#PBF, LT1413S8#TRPBF provides guaranteed phase reversal immunity and 2.5× lower offset voltage in SO-8; versus OP2177ARZ-REEL7, it trades 15× higher precision for 2.5× lower quiescent power and single-supply operability - making LT1413S8#TRPBF optimal for portable, safety-critical analog front-ends.

Availability

LT1413S8#TRPBF is available at Aetrix Electronics and suitable for battery-powered systems, strain gauge amplifiers, and portable medical devices requiring stable component supply with guaranteed long-term manufacturability.

Supply support for LT1413S8#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LT1413S8#TRPBF belongs to ADI's precision op amp portfolio, designed specifically for single-supply, low-power, high-accuracy signal conditioning in portable and embedded instrumentation where reliability under sub-ground input conditions is mandatory.

FAQ

What is the minimum supply voltage for reliable operation of the LT1413S8#TRPBF?

The LT1413S8#TRPBF operates reliably down to 2.85 V (single-supply) or ±2 V (dual-supply). At this minimum, input offset voltage changes by less than 200 µV versus its 5V value, preserving accuracy in low-voltage battery systems. Operation below 2.85 V risks undefined behavior and is not characterized.

Does the LT1413S8#TRPBF require external pull-down resistors on its outputs?

No. The LT1413S8#TRPBF output can sink current to within 25 mV of ground (no load) or 350 mV (1 mA sink), eliminating the need for external pull-down resistors in 5V logic interfaces. This simplifies PCB layout and reduces component count in battery-powered designs.

Can the LT1413S8#TRPBF be used with inputs below ground, and how far?

Yes. The LT1413S8#TRPBF accepts inputs down to –0.3 V (common-mode) and survives transient inputs as low as –5 V due to internal 400 Ω series resistors. Its phase reversal protection remains active down to –1.5 V, unlike LM324-class amplifiers that invert output at –0.4 V.

What is the thermal performance of the LT1413S8#TRPBF in SO-8 package?

The LT1413S8#TRPBF in SO-8 has θ_JA = 130°C/W. At 480 µA supply current and 5V supply, power dissipation is ~2.4 mW per amplifier. This allows continuous operation up to 75°C ambient without derating on standard FR-4 PCBs with minimal copper area.

How does the LT1413S8#TRPBF compare to the LT1013 in terms of pin compatibility and performance?

The LT1413S8#TRPBF uses the same SO-8 pinout as LT1013DS8, enabling drop-in replacement. It improves upon LT1013 with 2.5× lower max offset voltage (380 µV vs. 1.5 mV), adds phase reversal protection, and reduces supply current by 30% - all while maintaining identical package dimensions and thermal characteristics.