Analog Devices Inc. LT1358IS8#PBF

Overview

LT1358IS8#PBF from Analog Devices (formerly Linear Technology) is a dual high-speed voltage-feedback operational amplifier with 25MHz gain bandwidth, 600V/µs slew rate, and 2.5mA maximum supply current per amplifier. It features matched high-impedance inputs, unity-gain stability, and C-Load™ drive capability for any capacitive load-making it ideal for precision data acquisition systems, active filters, and photodiode amplification circuits operating from ±2.5V to ±15V supplies.

For engineers reviewing the LT1358IS8#PBF datasheet, LT1358IS8#PBF pinout, LT1358IS8#PBF application, or LT1358IS8#PBF equivalent, key selection criteria include guaranteed –40°C to +85°C operation, 600µV max input offset voltage, 8nV/√Hz input noise, 115ns 0.1% settling time (10V step), and SO-8 package compatibility with industry-standard PCB layouts.

Technical Context

The LT1358IS8#PBF employs a unique hybrid topology combining voltage-feedback architecture with current-feedback slewing behavior-enabling both high DC precision and fast transient response. Its single-stage design and matched NPN/PNP input stage deliver low input bias current (≤500nA), low input offset current (≤120nA), and excellent common-mode rejection (≥83dB at ±15V).

Stability across all capacitive loads is achieved via internal RC compensation that dynamically adjusts phase margin; output impedance remains ≤0.3Ω at 100kHz, supporting direct coaxial cable driving with optional 75Ω series termination. The amplifier is specified for ±2.5V, ±5V, and ±15V dual supplies with absolute maximum total supply voltage of 36V.

Key Specifications

Pinout & Package

LT1358IS8#PBF is housed in an 8-pin plastic SO (SO-8) surface-mount package with standard 150-mil width, JEDEC MS-012AC compliant footprint, and θ_JA = 190°C/W thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT1358IS8#PBF, LT1360CS8#PBF trades 1.5mA higher supply current for +25MHz bandwidth and +200V/µs slew rate, while LT1354CS8#PBF reduces supply current by 1.5mA per amplifier at the cost of 13MHz bandwidth and slower settling-making LT1358IS8#PBF the balanced choice for 20–25MHz industrial signal conditioning.

Availability

LT1358IS8#PBF is available at Aetrix Electronics and suitable for industrial instrumentation, medical sensor front-ends, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LT1358IS8#PBF 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 full product support, qualification, and manufacturing continuity for all former Linear parts including the LT1358 family.

The LT1358 series was designed as a dual high-speed precision op-amp targeting data acquisition, active filtering, and photodiode amplification where both wide bandwidth and low noise must coexist with robust DC accuracy and capacitive-load stability.

FAQ

What is the operating temperature range for LT1358IS8#PBF?

The LT1358IS8#PBF is specified and guaranteed over the industrial temperature range of –40°C to +85°C. This rating applies to all electrical parameters in the datasheet's "ELECTRICAL CHARACTERISTICS" table marked with the ● symbol, ensuring reliable performance in harsh environments such as factory automation and outdoor instrumentation where ambient temperatures fluctuate widely.

Does LT1358IS8#PBF require external compensation for capacitive loads?

No, LT1358IS8#PBF does not require external compensation for capacitive loads. Its patented C-Load™ architecture provides inherent stability with any value of capacitive load, including direct driving of coaxial cables. While peaking may occur at very large capacitances (>1nF), the amplifier remains unconditionally stable-eliminating the need for series isolation resistors or feedback capacitors in most buffer and transmission-line applications.

Can LT1358IS8#PBF operate from a single +5V supply?

LT1358IS8#PBF is designed for dual-supply operation (e.g., ±2.5V, ±5V, ±15V) and is not characterized for true single-supply use. Its input common-mode range extends to within ~1.1V of each rail at ±2.5V supplies, but operation with V– tied to ground and V+ = +5V results in degraded input range, reduced output swing, and unspecified performance-especially for DC-coupled signals near ground. For single-supply designs, consider rail-to-rail input/output op-amps like the ADA4897-2.

What is the maximum output current capability of LT1358IS8#PBF?

LT1358IS8#PBF delivers up to 30mA short-circuit output current per amplifier at ±15V supplies, and sustains ±25mA continuous output into 500Ω loads at ±15V. At ±5V supplies, it provides ±25mA short-circuit current and ±20mA continuous into 150Ω loads. These values ensure robust drive capability for moderate-impedance analog buses, terminated transmission lines, and active filter feedback networks without external boost stages.

How does LT1358IS8#PBF differ from the LT1358CS8#PBF variant?

The LT1358IS8#PBF and LT1358CS8#PBF share identical electrical specifications at 25°C, but differ in temperature grading: the 'I' grade is guaranteed over –40°C to +85°C for all parameters, while the 'C' grade is only tested and guaranteed from 0°C to +70°C. Both use the same SO-8 package and pinout, but LT1358IS8#PBF is qualified for extended industrial applications where cold-start or high-ambient operation is required.