Analog Devices Inc. LT1210CT7#PBF

Overview

LT1210CT7#PBF from Analog Devices is a current-feedback operational amplifier optimized for high-output-current, wide-bandwidth applications. It delivers 1.1A minimum output drive, 35MHz bandwidth (AV = 2, RL = 10Ω), and 900V/µs slew rate under ±15V operation - enabling robust video, cable, and test equipment driver performance with capacitive loads up to 10,000pF.

For engineers reviewing the LT1210CT7#PBF datasheet, LT1210CT7#PBF pinout, LT1210CT7#PBF application, or LT1210CT7#PBF equivalent, key selection considerations include its TO-220 package thermal performance (θJC = 5°C/W), shutdown mode (IS < 200µA), adjustable supply current via external resistor, and stability with large capacitive loads without external compensation.

Technical Context

The LT1210CT7#PBF implements a current-feedback architecture with high-impedance voltage-sensing inputs (10MΩ) and low-impedance current-summing node, enabling bandwidth largely independent of closed-loop gain. Its transresistance stage delivers ≥75kΩ typical ROL across temperature, supporting fast settling into low-Z loads like coaxial cables or ADC drivers.

Internal thermal shutdown and short-circuit protection operate autonomously; the COMP pin enables optional internal capacitance network activation for flattening response with CL = 0–1000pF, while SHUTDOWN pin control allows quiescent current scaling from 9mA to 50mA or full shutdown (<200µA).

Key Specifications

Pinout & Package

The LT1210CT7#PBF uses a 7-lead TO-220 package (T7) with exposed metal tab electrically connected to V+. Thermal resistance is θJC = 5°C/W, requiring mechanical mounting to a heatsink for sustained >1W dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-output-current amplifier applications.

Compared with LT1210CT7#PBF, LT1211CT7#PBF offers higher drive and bandwidth at the cost of losing shutdown control, while AD811ARZ trades output current and thermal robustness for ultra-high speed in compact packaging - making LT1210CT7#PBF the optimal balance for thermally demanding, high-current, programmable-power analog output stages.

Availability

LT1210CT7#PBF is available at Aetrix Electronics and suitable for video distribution systems, industrial twisted-pair communication interfaces, automated test equipment output stages, and high-speed data acquisition front-ends requiring stable component supply and long-term manufacturability.

Supply support for LT1210CT7#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and healthcare markets.

The LT1210 product line was designed specifically for high-current, wide-bandwidth analog signal conditioning - targeting video, instrumentation, and high-speed interface applications where traditional op amps fail due to output current or capacitive load limitations.

FAQ

What is the maximum capacitive load the LT1210CT7#PBF can drive stably?

The LT1210CT7#PBF is specified stable with up to 10,000pF capacitive load without external compensation. For loads between 0pF and 1000pF, connecting a 0.01µF capacitor between the COMP and OUT pins flattens frequency response and extends usable bandwidth - verified in Figure 1 of the datasheet with 200pF load.

Does the LT1210CT7#PBF require external compensation for resistive loads?

No. The COMP pin must be left open for purely resistive loads (e.g., 10Ω, 50Ω, 75Ω). Activating the internal compensation network with a capacitor degrades bandwidth - e.g., bandwidth drops from 35MHz to 26MHz with a 10Ω load when COMP is connected - so it is intentionally disabled by default for resistive applications.

How do I configure shutdown mode on the LT1210CT7#PBF?

To enter shutdown mode, drive the SHUTDOWN pin to V+ (or leave it open). This reduces supply current to <200µA and places the output in high-impedance state. For active-mode current adjustment, connect a resistor from SHUTDOWN to ground - e.g., 82kΩ sets IS ≈ 9mA at ±15V supply, per Applications Information Section.

What thermal management is required for continuous 1.1A output from the LT1210CT7#PBF?

The LT1210CT7#PBF uses a TO-220 package with θJC = 5°C/W. At 1.1A into 10Ω with ±15V supplies, power dissipation exceeds 1W. A heatsink with θCA ≤ 20°C/W is recommended to maintain TJ < 125°C in 70°C ambient - validated by thermal calculations in datasheet page 13 using TJ = PD × θJA + TA.

Can the LT1210CT7#PBF be used with single-supply operation?

Yes. The LT1210CT7#PBF operates from split supplies (±5V to ±15V) or single supplies (10V to 30V total), provided input common-mode and output swing ranges are respected. With +15V/0V supply, the input common-mode range is 0V to +13.5V and output swing is +2.5V to +11.5V into 10Ω - confirmed in Electrical Characteristics Table on page 3.