Analog Devices Inc. AD8042ARZ-REEL7

Overview

AD8042ARZ-REEL7 from Analog Devices is a dual, rail-to-rail output, voltage-feedback operational amplifier optimized for high-speed video and ADC driver applications. It delivers 160 MHz −3 dB bandwidth (G = +1), 200 V/μs slew rate, and 39 ns settling to 0.1% on +5 V supply, with output swing within 30 mV of either rail and input range extending 200 mV below ground - enabling single-supply operation in professional cameras and CCD imaging systems.

For engineers reviewing the AD8042ARZ-REEL7 datasheet, AD8042ARZ-REEL7 pinout, AD8042ARZ-REEL7 application, or AD8042ARZ-REEL7 equivalent, key selection criteria include rail-to-rail output swing under 50 mA load, differential gain error ≤0.06%, THD ≤−64 dBc at 10 MHz, and SOIC_N-8 package compatibility with high-density PCB layouts.

Technical Context

The AD8042ARZ-REEL7 employs Analog Devices' proprietary XFCB process to achieve simultaneous high speed (160 MHz BW) and low distortion (−78 dBc THD at ±5 V), with a differential-input, complementary common-emitter output stage. Its input common-mode range spans −0.2 V to +4 V on +5 V supply, and it avoids phase reversal even when inputs exceed rails by 0.5 V.

Designed for true single-supply operation, the device supports 3 V to 12 V or ±5 V supplies, draws only 6.4 mA per amplifier, and drives capacitive loads up to 25 pF (G = +1, ±5 V) while maintaining stability - making it suitable for driving ADC inputs and 75 Ω video lines without clamping circuitry.

Key Specifications

Pinout & Package

AD8042ARZ-REEL7 is housed in an 8-lead SOIC_N (Small Outline Integrated Circuit, Narrow) package, RoHS-compliant and tape-and-reel packaged (REEL7 denotes 7-inch reel). The package measures 4.9 mm × 3.9 mm × 1.75 mm with 1.27 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMH6702MA/NOPB and THS3202D, AD8042ARZ-REEL7 uniquely combines rail-to-rail output, sub-7 mA quiescent current, and verified NTSC video performance - making it the optimal choice for space- and power-constrained dual-channel video and ADC driver designs requiring guaranteed 0.1% settling and differential phase <0.1°.

Availability

AD8042ARZ-REEL7 is available at Aetrix Electronics and suitable for professional video switchers, analog-to-digital converter drivers, and CCD imaging systems requiring stable component supply across extended temperature ranges (−40°C to +85°C) and long production lifecycles.

Supply support for AD8042ARZ-REEL7 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 AD8042 belongs to Analog Devices' high-speed voltage-feedback op-amp product line, engineered specifically for demanding video, instrumentation, and data acquisition applications where bandwidth, distortion, and rail-to-rail output are simultaneously critical.

FAQ

What supply voltages does the AD8042ARZ-REEL7 support?

The AD8042ARZ-REEL7 operates from single supplies of +3 V to +12 V or dual supplies of ±3 V to ±6 V. It is fully specified at +3 V, +5 V, and ±5 V. At +5 V, it delivers 160 MHz bandwidth and rail-to-rail output swing; at ±5 V, bandwidth increases to 170 MHz with improved THD (−78 dBc). The input common-mode range extends 200 mV below the negative rail, enabling true single-supply functionality without level shifters.

Does the AD8042ARZ-REEL7 have rail-to-rail input capability?

No, the AD8042ARZ-REEL7 features rail-to-rail *output* but not rail-to-rail *input*. Its input common-mode voltage range is −0.2 V to +4 V on a +5 V supply - i.e., it extends 200 mV below ground but only to within 1 V of the positive rail. This allows robust single-supply operation for many video and ADC driver use cases, though input signals must remain within this range to avoid degradation in CMRR or offset drift.

Can the AD8042ARZ-REEL7 drive 75 Ω video loads directly?

Yes, the AD8042ARZ-REEL7 can drive 75 Ω video loads directly in AC-coupled configurations. When configured as a unity-gain follower with proper termination, it achieves 0.04% differential gain and 0.06° differential phase error (NTSC, 100 IRE) into 150 Ω loads referenced to 2.5 V. For 75 Ω, performance remains compliant (0.04% gain error, 0.24° phase error), and its 50 mA output current capability ensures stable drive without external buffers.

What is the maximum capacitive load the AD8042ARZ-REEL7 can drive stably?

The AD8042ARZ-REEL7 drives up to 25 pF capacitively in unity-gain configuration with ±5 V supplies, and 20 pF with +5 V supply (Table 1, Capacitive Load Drive). Stability with larger loads (e.g., ADC input capacitance + PCB trace) can be ensured by adding a small series resistor (5–20 Ω) between amplifier output and load - a technique validated in the datasheet's Figure 36 and Applications Information section.

Is the AD8042ARZ-REEL7 pin-compatible with other dual op-amps in SOIC-8?

No, the AD8042ARZ-REEL7 has a unique pinout optimized for dual-channel symmetry and low crosstalk: OUT1/–IN1/+IN1/–VS/OUT2/+VS/–IN2/+IN2. It is not pin-compatible with generic dual op-amps like the OP2177 or LM258. Substitution requires PCB layout revision. Always verify pin mapping against Figure 2 (Connection Diagram) in the AD8042 Rev. E datasheet before board design.