Analog Devices Inc. LT1356CS#TRPBF

Overview

LT1356CS#TRPBF 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 1.25mA maximum supply current per amplifier. It features C-Load™ stability with any capacitive load, ±12V output swing into 500Ω at ±15V supplies, and is optimized for data acquisition systems requiring fast settling and DC precision.

For engineers reviewing the LT1356CS#TRPBF datasheet, LT1356CS#TRPBF pinout, LT1356CS#TRPBF application, or LT1356CS#TRPBF equivalent, this page delivers verified specifications, SO-16 package layout, real-world settling performance (230ns to 0.1%), noise floor (10nV/√Hz), and validated alternatives for active filter, photodiode amplification, and buffer designs.

Technical Context

The LT1356CS#TRPBF employs a unique voltage-feedback topology with matched high-impedance inputs and current-feedback-like slewing behavior, enabling single-stage design and excellent 0.01% settling (280ns). Its internal bootstrapped RC compensation ensures unconditional stability with all capacitive loads, including coaxial cables.

Each amplifier drives 500Ω to ±12V on ±15V supplies and 150Ω to ±2.75V on ±5V supplies. Input stage uses complementary NPN/PNP emitter followers for bias current cancellation, yielding low input offset current (70nA max) and wide common-mode range (±12V at ±15V supplies).

Key Specifications

Pinout & Package

LT1356CS#TRPBF is housed in a 16-lead plastic SO (Small Outline) package, 0.150-inch narrow body, RoHS-compliant lead-free finish, tape-and-reel packaging. Thermal resistance θ_JA = 150°C/W, θ_JC = 30°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT1358CS#TRPBF and OPA4350UA, the LT1356CS#TRPBF uniquely balances 12MHz bandwidth, 400V/µs slew, and 1.25mA supply current while guaranteeing stability with any capacitive load - making it the most efficient choice for cost- and power-constrained 100kHz–1MHz precision analog signal chains.

Availability

LT1356CS#TRPBF is available at Aetrix Electronics and suitable for data acquisition systems, active filter modules, and photodiode amplifier circuits requiring stable component supply, long-term manufacturability, and guaranteed RoHS compliance.

Supply support for LT1356CS#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The LT1356CS#TRPBF belongs to Linear Technology's precision high-speed op amp family, designed specifically for demanding data acquisition, instrumentation, and signal conditioning applications where speed, accuracy, and capacitive-load robustness are co-critical.

FAQ

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

The LT1356CS#TRPBF is explicitly specified as C-Load™ stable with "any capacitive load" - including 10,000pF per the datasheet's large-signal transient plots (G36). No external isolation resistor is required, unlike conventional op amps. This makes LT1356CS#TRPBF ideal for direct coaxial cable driving or ADC input buffering where stray capacitance exceeds 1000pF.

Does the LT1356CS#TRPBF support ±2.5V supply operation?

Yes, the LT1356CS#TRPBF is fully specified at ±2.5V, ±5V, and ±15V supplies. At ±2.5V, it delivers ±1.3V output swing into 500Ω, 12MHz gain bandwidth, and 1.2mA supply current per amplifier. Input common-mode range extends to ±0.5V, enabling use in low-voltage precision sensor interfaces where headroom is constrained.

What is the typical input bias current polarity for the LT1356CS#TRPBF?

The LT1356CS#TRPBF uses complementary NPN/PNP input transistors for first-order bias cancellation, so input bias current polarity (positive or negative) depends on beta matching variation and is not guaranteed. The datasheet specifies magnitude only: ≤300nA max at ±15V. For DC-critical designs, use matched source impedances on both inputs to minimize offset voltage drift caused by IB mismatch.

Can the LT1356CS#TRPBF be used in a comparator configuration?

No - the LT1356CS#TRPBF is not designed for open-loop comparator use. Sustained differential input voltages >±10V cause excessive supply current and risk thermal damage. Its internal architecture prioritizes linear settling and stability, not propagation delay or latch-up immunity. Use dedicated comparators (e.g., LT1719) instead.

How does the LT1356CS#TRPBF achieve 400V/µs slew rate with only 1.25mA supply current?

The LT1356CS#TRPBF achieves high slew rate at low current via a patented topology: input voltage appears across an 800Ω resistor, generating a current mirrored into a high-impedance gain node. Slew rate = dV/dt = I_charge/C_node, where I_charge scales with input differential voltage. This current-steering architecture delivers 400V/µs in low-gain configurations while maintaining 1.25mA quiescent current - a 3× efficiency improvement over conventional voltage-feedback op amps.