Analog Devices Inc. LT1210CT7#37PBF

Overview

LT1210CT7#37PBF 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 at AV = 2 with 10Ω load, and 900V/µs slew rate under ±15V supply - enabling robust cable driving, video buffering, and ADSL line driver functions in industrial test equipment and communications infrastructure.

For engineers reviewing the LT1210CT7#37PBF datasheet, LT1210CT7#37PBF pinout, LT1210CT7#37PBF application, or LT1210CT7#37PBF equivalent, this page provides verified package mapping (T7 TO-220, 7-pin), thermal resistance (θJC = 5°C/W), shutdown control interface, capacitive-load compensation capability (up to 10,000pF), and validated alternative options for ±15V high-current amplifier replacement.

Technical Context

The LT1210CT7#37PBF implements a current-feedback architecture with separate high-impedance input stage (10MΩ) and low-impedance output stage, enabling gain-independent bandwidth scaling and fast large-signal response. Its transresistance-based signal path supports stable operation with resistive loads down to 1Ω and capacitive loads up to 10,000pF when COMP pin is bypassed with 0.01µF.

Shutdown functionality is implemented via a voltage-referenced bias current sink on the SHUTDOWN pin, allowing quiescent supply current reduction to <200µA or adjustable operation (e.g., 9mA with 82kΩ to ground). Thermal shutdown activates at TJ = 150°C, with junction-to-case thermal resistance of 5°C/W in the T7 TO-220 package.

Key Specifications

Pinout & Package

The LT1210CT7#37PBF is housed in a 7-lead TO-220 (T7) package with exposed metal tab electrically connected to V+. Thermal resistance is θJC = 5°C/W, requiring mechanical mounting to heatsink for continuous high-power operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT1228CS#PBF and THS3091DGNR, the LT1210CT7#37PBF uniquely balances 1.1A drive, 35MHz bandwidth, integrated shutdown, and capacitive-load compensation - making it the only option among the three qualified for ±15V cable driver and ADSL line card designs requiring thermal resilience and layout flexibility.

Availability

LT1210CT7#37PBF is available at Aetrix Electronics and suitable for cable driver, video buffer, and ADSL line driver applications requiring stable component supply, long-term industrial lifecycle support, and guaranteed ±15V operation in TO-220 packaging.

Supply support for LT1210CT7#37PBF 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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets.

The LT1210 product line was designed specifically for high-current, wide-bandwidth analog signal conditioning - targeting demanding applications like video distribution, DSL line cards, and automated test equipment where traditional op amps fail due to output current or slew limitations.

FAQ

What is the maximum capacitive load the LT1210CT7#37PBF can drive stably?

The LT1210CT7#37PBF is specified stable with up to 10,000pF capacitive load when the COMP pin is bypassed to OUT with a 0.01µF capacitor. This configuration eliminates peaking and maintains ±1dB flatness to 40MHz with appropriate feedback resistor selection. Without COMP compensation, stability degrades rapidly beyond ~200pF. The T7 TO-220 package's thermal mass supports sustained current delivery into such loads without thermal runaway.

How does the SHUTDOWN pin function on the LT1210CT7#37PBF?

The SHUTDOWN pin on the LT1210CT7#37PBF controls bias current: pulling it to V+ or leaving it floating places the device in shutdown mode (<200µA supply current); connecting it to V– enables normal operation. An external resistor from SHUTDOWN to ground sets intermediate quiescent current (e.g., 9mA with 82kΩ), allowing dynamic bandwidth/power adjustment. The pin is referenced to V+, so logic interfaces require open-drain drivers with breakdown voltage >V+.

Can the LT1210CT7#37PBF operate from a single +10V supply?

Yes, the LT1210CT7#37PBF supports single-supply operation from +10V (with V– = 0V), though performance differs from split-supply use. Input common-mode range extends to within 2V of rails, output swing is reduced (±2.5V typical into 10Ω), and PSRR degrades at low frequencies. For optimal linearity and distortion, ±5V to ±15V split supplies are recommended - the T7 package's thermal design assumes symmetric dissipation.

What is the thermal resistance of the LT1210CT7#37PBF package?

As a T7 TO-220 device, the LT1210CT7#37PBF has a junction-to-case thermal resistance (θJC) of 5°C/W. Junction-to-ambient (θJA) depends on heatsink interface: with a properly mounted 1°C/W heatsink, total θJA drops to ~6°C/W. Without heatsinking, θJA exceeds 50°C/W in still air - limiting continuous output current to ~300mA at TA = 70°C. The exposed tab is electrically connected to V+, requiring insulated mounting hardware.

Does the LT1210CT7#37PBF require external compensation for resistive loads?

No - the LT1210CT7#37PBF should have the COMP pin left open for purely resistive loads (e.g., 10Ω–100Ω). Connecting the 0.01µF capacitor between COMP and OUT reduces bandwidth (e.g., 35MHz → 26MHz at AV = 2, RL = 10Ω) without improving stability. The compensation network is exclusively intended for capacitive loads ≥100pF; misuse causes unnecessary bandwidth loss and degraded slew rate.