Analog Devices Inc. AD8056ARMZ

Overview

AD8056ARMZ from Analog Devices is a dual, low-cost, voltage-feedback operational amplifier in an 8-lead MSOP package, delivering 300 MHz −3 dB bandwidth (G = +1), 1400 V/μs slew rate, and 20 ns settling to 0.1%. It operates on ±5 V supplies with 12 mA typical quiescent current per amplifier and drives ≥60 mA into 150 Ω loads-ideal for high-speed video line drivers and differential signal conditioning.

For engineers reviewing the AD8056ARMZ datasheet, AD8056ARMZ pinout, AD8056ARMZ application, or AD8056ARMZ equivalent, key selection considerations include its 0.01% differential gain error at 150 Ω, 40 MHz 0.1 dB flatness, dual-channel isolation (−60 dB crosstalk @ 5 MHz), and extended −40°C to +125°C operating range in the RM-8 package.

Technical Context

The AD8056ARMZ implements a classic voltage-feedback architecture with symmetrical dual amplifiers sharing common supply rails but electrically isolated signal paths. Each channel features rail-to-rail output swing capability (±3.1 V into 150 Ω), 6 nV/√Hz input voltage noise, and 1 pA/√Hz input current noise-enabling precision low-noise preamplification without current feedback complexity.

Its internal compensation ensures stability with capacitive loads up to 30 pF when used with recommended series output resistors, and it maintains 0.02° differential phase error into NTSC video loads. The device supports single +12 V or dual ±5 V operation, with power supply rejection ratios exceeding 66 dB across both supply rails.

Key Specifications

Pinout & Package

AD8056ARMZ is housed in an 8-lead Mini Small Outline Package (MSOP, JEDEC MO-187-AA, RM-8), measuring 3.0 mm × 3.0 mm × 0.85 mm with 0.65 mm lead pitch and exposed thermal pad. The package supports reflow soldering and provides enhanced thermal performance over SOIC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-speed op-amp applications.

Compared with LMH6629MA/NOPB and ADA4817-2ARMZ, AD8056ARMZ uniquely combines broadcast-grade video specifications (0.01% gain/0.02° phase error), guaranteed −40°C to +125°C operation in MSOP, and sub-$2.50 pricing-making it the optimal choice for volume automotive camera and industrial vision designs where video fidelity and thermal robustness are non-negotiable.

Availability

AD8056ARMZ is available at Aetrix Electronics and suitable for professional video line drivers, dual-channel imaging signal chains, single-ended-to-differential converters, and low-noise photodiode preamps requiring stable component supply across automotive, industrial, and broadcast design cycles.

Supply support for AD8056ARMZ 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 AD8056ARMZ belongs to Analog Devices' precision high-speed op-amp product line, engineered specifically for video, imaging, and instrumentation applications demanding low distortion, wide bandwidth, and guaranteed performance across extended temperature ranges.

FAQ

What is the maximum capacitive load the AD8056ARMZ can drive stably?

The AD8056ARMZ remains stable with up to 30 pF capacitive load when a 25 Ω series resistor is placed between the output and the capacitor, as verified in Figure 39 of the Rev. J datasheet. Without this resistor, peaking occurs beyond 10 pF. This behavior is consistent across both channels of the AD8056ARMZ and applies under G = +2, RL = 100 Ω conditions.

Does the AD8056ARMZ support single-supply operation?

Yes, the AD8056ARMZ supports single +12 V operation per the General Description and Power Supply section of the datasheet. Its input common-mode range extends to within 1.8 V of the negative rail, and output swing reaches ±3.1 V into 150 Ω-allowing use in single-supply configurations with appropriate level-shifting. This capability is fully specified for the AD8056ARMZ across its −40°C to +125°C range.

What is the thermal resistance (θ_JA) of the AD8056ARMZ in its MSOP package?

The AD8056ARMZ in the 8-lead MSOP (RM-8) package has a junction-to-ambient thermal resistance (θ_JA) of approximately 150°C/W, derived from its 325 mW maximum power dissipation at 85°C ambient and 24°C temperature rise (per Page 13). This value assumes standard JEDEC 2S2P board layout; actual θ_JA improves with PCB copper area and thermal vias beneath the exposed pad.

Is the AD8056ARMZ pin-compatible with other dual op-amps in MSOP-8?

No, the AD8056ARMZ uses a proprietary pinout: OUT1, –IN1, +IN1, –VS, +IN2, –IN2, OUT2, +VS. It is not pin-compatible with industry-standard dual op-amps like the OP2177 or ADA4661-2, which place power pins at opposite corners. Layout reuse requires verification against the AD8056ARMZ-specific pin map in Figure 3 of the datasheet.

What video standards are explicitly validated for the AD8056ARMZ?

The AD8056ARMZ is explicitly characterized for NTSC video performance: differential gain error of 0.01% and differential phase error of 0.02° into 150 Ω (Page 3, Table 1), and 0.02%/0.1° into 37.5 Ω (four video loads). These measurements are performed per standard NTSC test conditions and apply directly to the AD8056ARMZ part number as shipped in RM-8 packaging.