Analog Devices Inc. AD8073JN

Overview

AD8073JN from Analog Devices is a triple, current-feedback video amplifier in a 14-lead plastic DIP package, delivering 100 MHz –3 dB bandwidth (G = +2), 500 V/µs slew rate, and 0.05% differential gain error at 3.58 MHz for RGB/S-Video line driving applications requiring high fidelity and low cost.

For engineers reviewing the AD8073JN datasheet, AD8073JN pinout, AD8073JN application, or AD8073JN equivalent, this page provides verified pin functions, real-world video performance metrics, thermal derating curves, crosstalk behavior across all three channels, and validated alternatives for dual-supply or single-5V video signal conditioning designs.

Technical Context

The AD8073JN implements a current-feedback architecture with 120 Ω inverting input resistance and 1 MΩ noninverting input resistance, enabling stable gain-setting with standard RF/RG networks. Its transimpedance of 0.25–0.3 MΩ defines closed-loop bandwidth dependence on feedback resistor value (649 Ω to 2 kΩ).

Each of its three amplifiers operates independently with rail-to-rail output swing capability-delivering 1.3 V to 3.7 V on a single 5 V supply into 150 Ω-and exhibits <0.1° differential phase error and –60 dB typical crosstalk between adjacent channels at 5 MHz.

Key Specifications

Pinout & Package

AD8073JN is housed in a 14-lead plastic DIP (N-14) package with 0.300-inch body width and 0.100-inch lead pitch. Pin 1 is marked by a notch or dot; leads are numbered counter-clockwise from top-left when viewed from top with notch facing up.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple video amplifier applications.

Compared with AD8073JR and LMH6733MA, the AD8073JN offers the lowest system cost for commercial SD video applications due to its plastic DIP packaging, proven 0.05% differential gain, and 3.5 mA/amplifier power efficiency-making it ideal for high-volume consumer electronics where thermal margin and layout simplicity are prioritized.

Availability

AD8073JN is available at Aetrix Electronics and suitable for RGB video line drivers, S-Video signal conditioners, and computer video plug-in boards requiring stable component supply across extended production cycles.

Supply support for AD8073JN 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.

The AD8073JN belongs to Analog Devices' video amplifier product line, designed specifically for cost-sensitive, high-volume video signal conditioning in consumer and professional broadcast equipment operating from single 5 V supplies.

FAQ

What is the maximum safe operating temperature for the AD8073JN?

The AD8073JN is rated for operation from 0°C to +70°C ambient temperature. Its 14-lead plastic DIP package has a thermal resistance (θJA) of 75°C/W. To maintain junction temperature below 150°C, power dissipation must be limited to ≤1.6 W at 25°C ambient, derating linearly to ~1.0 W at 70°C ambient per the manufacturer's Figure 3 curve.

Can the AD8073JN drive 75 Ω video loads directly?

Yes, the AD8073JN can drive 75 Ω loads, though it is optimized for 150 Ω back-terminated video lines. When driving 75 Ω, output swing reduces to ~1.1 V to 3.9 V on a 5 V supply, and small-signal bandwidth drops to ~78 MHz. For sustained 75 Ω operation, verify thermal limits using the AD8073JN's 1.6 W max power dissipation rating.

Does the AD8073JN require external compensation components?

No, the AD8073JN is internally compensated for unity-gain stability with standard feedback resistors (649 Ω to 2 kΩ). External compensation is unnecessary for G ≥ +1 configurations. However, layout best practices-including short traces to the inverting input and local 0.1 µF + 4.7 µF supply bypassing-are mandatory to achieve specified 100 MHz bandwidth and 25 ns settling.

How does crosstalk behave among the three amplifiers in the AD8073JN?

Per Analog Devices' Table I, AD8073JN exhibits –60 dB typical crosstalk between any two driven channels at 5 MHz (e.g., driving Amp 1 yields –60 dB feedthrough at Amp 2 output). Worst-case "all hostile" crosstalk is –53 dB. This is sufficient for RGB separation but not for ultra-high-isolation applications like medical imaging front-ends.

Is the AD8073JN compatible with single-supply 3.3 V operation?

No-the AD8073JN minimum supply is ±2.5 V (i.e., 5 V total) or single 5 V. Operation at 3.3 V violates the absolute maximum rating and causes severe clipping, reduced output swing (<1 V), and degraded differential gain/phase. For 3.3 V systems, consider the AD8073's successor family or alternative low-voltage video amps.