Analog Devices Inc. LT1206CN8#PBF

Overview

LT1206CN8#PBF from Analog Devices (acquired Linear Technology) is a current feedback amplifier optimized for high-current video and cable driving applications. It delivers 250mA minimum output drive, 60MHz bandwidth at AV = 2 with 100Ω load, 900V/µs slew rate, 0.02% differential gain, and 0.17° differential phase - enabling robust RGB, composite video, and multi-cable distribution in broadcast and test equipment.

For engineers reviewing the LT1206CN8#PBF datasheet, LT1206CN8#PBF pinout, LT1206CN8#PBF application, or LT1206CN8#PBF equivalent, key selection considerations include capacitive-load stability up to 10,000pF, shutdown mode (<200µA), adjustable supply current via external resistor, ±5V to ±15V dual-supply operation, and DIP-8 package thermal performance (θJA = 100°C/W).

Technical Context

The LT1206CN8#PBF employs a proprietary complementary bipolar process to achieve high-speed current feedback architecture, where bandwidth and slew rate depend on feedback resistor value and supply voltage-not fixed gain-bandwidth product. Its transresistance stage (ROL ≥100kΩ) enables stable operation into large capacitive loads without oscillation when COMP pin is configured.

Shutdown control is referenced to V+, allowing direct interface with open-drain logic; quiescent current scales linearly with shutdown pin current (≈40×). Input stage features 10MΩ high impedance and ±6V differential input clamp, while output stage sustains ±11.5V swing into 50Ω with 250mA sourcing/sinking capability.

Key Specifications

Pinout & Package

LT1206CN8#PBF uses an 8-lead plastic DIP (N8) package with 0.300-inch width and through-hole mounting. Thermal resistance is θJA = 100°C/W in still air.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current feedback amplifier applications.

Compared with LT1363CN8#PBF and AD817ARZ, the LT1206CN8#PBF uniquely balances high output current (250mA), video-grade linearity (0.02%/0.17°), and integrated shutdown-making it irreplaceable in multi-cable broadcast distribution where drive strength and power management coexist.

Availability

LT1206CN8#PBF is available at Aetrix Electronics and suitable for RGB video distribution, broadcast cable driving, and test equipment amplifier applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and medical OEM programs.

Supply support for LT1206CN8#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, automotive, communications, and healthcare markets.

The LT1206CN8#PBF belongs to Linear Technology's legacy high-speed current feedback amplifier family, engineered specifically for demanding video, instrumentation, and high-current buffer applications where traditional op amps fail to meet drive or stability requirements.

FAQ

What is the maximum capacitive load the LT1206CN8#PBF can drive stably?

The LT1206CN8#PBF is specified stable with up to 10,000pF capacitive load when the COMP pin is connected to the output via a 0.01µF capacitor. This configuration eliminates peaking and maintains flat frequency response - critical for driving long coaxial cables or LCD panel interfaces. Without COMP compensation, stability degrades significantly above ~1000pF.

Does the LT1206CN8#PBF require external compensation for resistive loads?

No - the LT1206CN8#PBF does not require external compensation for purely resistive loads. The COMP pin should be left open (unconnected) in such cases. Connecting the COMP network to resistive loads reduces bandwidth (e.g., from 55MHz to 35MHz at 30Ω), so it is intentionally optional to preserve performance where not needed.

How is shutdown controlled on the LT1206CN8#PBF, and what is its leakage behavior?

Shutdown on the LT1206CN8#PBF is controlled via the S/D pin, which is internally referenced to V+. To enable normal operation, tie S/D to V– or ground; to enter shutdown, drive S/D to V+. In shutdown, supply current drops below 200µA and output leakage is ≤10µA - presenting a high-impedance, low-leakage state ideal for multiplexed video routing.

Can the LT1206CN8#PBF operate from a single supply?

Yes - the LT1206CN8#PBF supports single-supply operation (e.g., +10V to +30V total) with appropriate input/output biasing. However, its specified video performance (differential gain/phase, bandwidth) is characterized under ±5V to ±15V split supplies. For single-supply use, ensure input common-mode range (±12V at ±15V supplies) and output swing (±11.5V) are re-referenced to mid-rail with proper level-shifting networks.

What thermal derating applies to the LT1206CN8#PBF in its N8 DIP package?

The LT1206CN8#PBF in the N8 DIP package has θJA = 100°C/W. At 70°C ambient and 1.03W dissipation, junction temperature reaches 173°C - exceeding the 150°C absolute maximum. Derating is mandatory: reduce supply voltage, limit output current, or add airflow. For sustained operation, thermal design must keep TJ ≤ 150°C - typically requiring <0.7W dissipation in still air or active cooling.