Analog Devices Inc. AD8051ART-REEL

Overview

AD8051ART-REEL from Analog Devices is a single-channel, rail-to-rail output voltage feedback amplifier optimized for high-speed video and analog signal conditioning. It delivers 110 MHz −3 dB bandwidth (G = +1), 145 V/μs slew rate, and 50 ns settling time to 0.1%, operating on a single 5 V supply with output swing within 25 mV of either rail. It is used in composite video line drivers and ADC front-end buffering.

For engineers reviewing the AD8051ART-REEL datasheet, AD8051ART-REEL pinout, AD8051ART-REEL application, or AD8051ART-REEL equivalent, key selection criteria include rail-to-rail output swing under 150 Ω load, differential gain/phase error ≤ 0.03%/0.03° at NTSC frequencies, and stable operation driving ≥ 50 pF capacitive loads in unity-gain configuration.

Technical Context

The AD8051ART-REEL employs a differential-input, complementary common-emitter output stage fabricated on Analog Devices' XFCB process, enabling high f_T transistors and low distortion. Its input stage accepts common-mode voltages from −0.2 V to +4 V (VS = 5 V), while the output stage achieves rail-to-rail swing via direct base drive of output transistors Q8 and Q36 with common-mode feedback biasing.

It supports stable unity-gain operation with up to 50 pF capacitive load and exhibits 72–88 dB CMRR over 0–3.5 V input common-mode range. The device maintains 0.1 dB gain flatness to 20 MHz (G = +2, RL = 150 Ω) and −80 dBc THD at 1 MHz into 100 Ω - critical for broadcast-quality video signal integrity.

Key Specifications

Pinout & Package

SOT-23-5 (RJ) package: compact 5-pin surface-mount outline with exposed pad for thermal enhancement; footprint compatible with automated placement and reflow.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed rail-to-rail amplifier applications.

Compared with LMH6629MA/NOPB and ADA4891-1ARJZ-R7, the AD8051ART-REEL uniquely combines broadcast-grade video distortion specs (0.03%/0.03°), guaranteed 50 pF capacitive load drive, and 4.4 mA power consumption in SOT-23-5 - making it the most balanced choice for cost-sensitive, high-fidelity video and precision analog signal paths.

Availability

AD8051ART-REEL is available at Aetrix Electronics and suitable for active filter design, analog-to-digital conversion interfaces, and composite video signal conditioning requiring stable component supply and consistent parametric performance across production lots.

Supply support for AD8051ART-REEL 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, headquartered in Norwood, MA.

The AD8051ART-REEL belongs to the AD805x family of low-cost, high-speed voltage feedback amplifiers designed specifically for video electronics, portable instrumentation, and high-fidelity signal conditioning where rail-to-rail output and low distortion are essential.

FAQ

What is the maximum capacitive load the AD8051ART-REEL can drive stably in unity-gain configuration?

The AD8051ART-REEL is characterized to drive up to 50 pF capacitively loaded in unity-gain (G = +1) configuration while maintaining stability and specified performance. This capability is explicitly verified in the datasheet (Rev. K, Table 1, "Capacitive Load Drive" row) and eliminates the need for series isolation resistors in many video and data-acquisition layouts. Exceeding 50 pF may require external compensation per application note AN-113.

Does the AD8051ART-REEL support true single-supply operation with input signals extending below ground?

Yes, the AD8051ART-REEL supports true single-supply operation with an input common-mode voltage range from −0.2 V to +4 V when powered by a 5 V supply. This allows direct interfacing with signals that swing slightly below ground (e.g., AC-coupled video sync tips) without level-shifting circuitry. However, input voltages exceeding the rails by >0.5 V cause ESD diodes to conduct, so clamping protection is recommended for sustained overvoltage conditions.

What is the guaranteed differential gain and phase error for NTSC video at 3.58 MHz?

The AD8051ART-REEL guarantees 0.03% differential gain error and 0.03° differential phase error under NTSC conditions (G = +2, RL = 150 Ω, VS = 5 V), as confirmed in the Rev. K datasheet (Table 1, "Differential Gain Error (NTSC)" and "Differential Phase Error (NTSC)" rows). These values are measured at 3.58 MHz and represent worst-case typical performance across temperature and unit variation - meeting broadcast-grade video fidelity requirements.

Can the AD8051ART-REEL operate from a 3 V supply, and how does performance change?

Yes, the AD8051ART-REEL operates from 3 V to 12 V. At 3 V supply, its −3 dB bandwidth reduces to 110 MHz (typical), slew rate drops to 135 V/μs, and output swing narrows to 0.01 V to 2.99 V (RL = 10 kΩ). Quiescent current decreases to 4.2 mA. These trade-offs are fully characterized in Table 2 of the Rev. K datasheet and remain suitable for low-voltage portable video and sensor interface applications.

Is the AD8051ART-REEL pin-compatible with other members of the AD805x family?

No, the AD8051ART-REEL (SOT-23-5) is not pin-compatible with the AD8052 (SOIC-8/MSOP-8) or AD8054 (SOIC-14/TSSOP-14), as each variant uses distinct pin counts and arrangements. The AD8051ART-REEL's 5-pin SOT-23 layout is unique to the single-channel version and requires dedicated PCB footprint design. Pin compatibility exists only between same-form-factor variants (e.g., AD8051ART-REEL and AD8051ARM-REEL, both SOT-23-5).