Analog Devices Inc. LT1356CS#PBF

Overview

LT1356CS#PBF from Analog Devices (formerly Linear Technology) is a quad, high-speed, low-power voltage-feedback operational amplifier with 12MHz gain bandwidth, 400V/µs slew rate, and unity-gain stability. It delivers ±12V output swing into 500Ω with ±15V supplies and drives capacitive loads without external compensation-making it ideal for precision data acquisition front-ends and active filter stages.

For engineers reviewing the LT1356CS#PBF datasheet, LT1356CS#PBF pinout, LT1356CS#PBF application, or LT1356CS#PBF equivalent, this page provides verified specifications, validated SO-16 pin mapping, real-world settling performance (230ns to 0.1%), C-Load™ stability assurance, and two functionally comparable alternatives for design-in flexibility.

Technical Context

The LT1356CS#PBF employs a unique hybrid topology combining matched high-impedance voltage-feedback inputs with current-feedback slewing behavior. Its single-stage design enables fast settling (230ns to 0.1% for 10V step) and excellent phase margin across supply voltages (±2.5V to ±15V) and temperatures (0°C to 70°C).

It features complementary NPN/PNP input stage bias cancellation, enabling low input offset current (70nA max) and stable operation with any capacitive load-including coaxial cable-without oscillation. The internal RC network dynamically compensates for load capacitance, preserving stability while maintaining bandwidth control.

Key Specifications

Pinout & Package

LT1356CS#PBF is housed in a 16-lead plastic SO (S16) package, 150°C/W junction-to-ambient thermal resistance, lead-free (Pb-free) finish, RoHS compliant. Dimensions: 3.988 × 9.804 mm (0.157 × 0.386 inch), narrow-body SOIC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT1358CS#PBF and OPA4350UA/2K5, the LT1356CS#PBF uniquely balances 12MHz bandwidth, 400V/µs slew, and 1.25mA/amp quiescent current in a quad SO-16 package-making it optimal for cost- and power-sensitive multi-channel industrial data acquisition where ±15V rails and capacitive load drive are required.

Availability

LT1356CS#PBF is available at Aetrix Electronics and suitable for industrial automation, test equipment, and medical instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for LT1356CS#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 technical and manufacturing continuity for all Linear op amp families, including rigorous qualification and reliability testing per JESD47.

The LT1356CS#PBF belongs to Linear's C-Load™ high-speed op amp family, designed specifically for demanding data acquisition, active filtering, and precision buffering applications where stability with capacitive loads and fast settling are non-negotiable.

FAQ

What is the maximum capacitive load the LT1356CS#PBF can drive without oscillation?

The LT1356CS#PBF is explicitly characterized and guaranteed stable with any capacitive load - from 0pF to >10,000pF - thanks to its patented C-Load™ compensation architecture. This eliminates the need for series isolation resistors in ADC driver, video line driver, or coaxial cable applications. Real-world validation shows clean 10V step response with <5% overshoot even at 10,000pF, as confirmed in Figure G36 of the LT1355/LT1356 datasheet.

Does the LT1356CS#PBF support ±2.5V supply operation, and what performance is guaranteed?

Yes, the LT1356CS#PBF is fully specified for ±2.5V, ±5V, and ±15V dual supplies. At ±2.5V, it delivers minimum 9MHz gain bandwidth, 70V/µs slew rate, ±1.3V output swing into 500Ω, and 1.20mA supply current per amplifier - all tested and guaranteed over 0°C to 70°C. These values are listed in the "ELECTRICAL CHARACTERISTICS" table on page 3 of the datasheet under VSUPPLY = ±2.5V.

How does the LT1356CS#PBF achieve both high slew rate and low input bias current?

The LT1356CS#PBF uses a complementary NPN/PNP input stage where base currents oppose each other, achieving first-order bias cancellation. This yields low input bias current (300nA max) while retaining high transconductance for 400V/µs slew rate. Unlike conventional current-feedback amps, it maintains high input impedance (160MΩ) and low noise (10nV/√Hz), making it suitable for high-Z sensor interfaces where both speed and DC precision matter.

Can the LT1356CS#PBF be used in single-supply configurations, and what are the limitations?

Yes, the LT1356CS#PBF operates with single supplies down to 5V (e.g., V+ = 5V, V– = 0V), but input common-mode range is limited to 0.5V above V– and 1.1V below V+ at ±2.5V supplies - translating to ~0.5V to ~3.9V at 5V. Output swing is similarly constrained (e.g., 1.2V to 3.8V into 150Ω). For true rail-to-rail I/O, consider alternatives like OPA4350; for single-supply high-speed buffering with mid-rail biasing, LT1356CS#PBF remains viable with proper level-shifting.

What is the thermal resistance (θ_JA) of the LT1356CS#PBF in its SO-16 package, and how does it affect power dissipation?

The LT1356CS#PBF in the 16-lead plastic SO package has θ_JA = 150°C/W, as stated in the "PIN CONFIGURATION" section (page 3) of the datasheet. At maximum supply current (1.45mA per amp × 4 = 5.8mA) and ±15V supplies, worst-case power dissipation is ~99.8mW per amplifier (calculated per Application Information, page 11). With θ_JA = 150°C/W and T_A = 70°C, junction temperature reaches ~130°C - well below the 150°C absolute maximum, confirming safe operation in industrial ambient conditions.