Analog Devices Inc. AD8007ARZ

Overview

AD8007ARZ from Analog Devices is a single-channel, current-feedback operational amplifier optimized for ultralow distortion and high-speed signal conditioning in precision analog front-ends. It delivers 650 MHz −3 dB bandwidth (G = +1), 1000 V/μs slew rate, and −83 dBc second harmonic distortion at 20 MHz, enabling high-fidelity IF/baseband amplification in instrumentation and data acquisition systems.

For engineers reviewing the AD8007ARZ datasheet, AD8007ARZ pinout, AD8007ARZ application, or AD8007ARZ equivalent, key selection criteria include its 2.7 nV/√Hz input voltage noise, 9 mA quiescent current per amplifier, ±5 V to ±6 V dual-supply operation, and SOIC-8 package compatibility with layout-sensitive high-frequency PCB designs.

Technical Context

The AD8007ARZ employs Analog Devices' second-generation XFCB process to implement a modified current-feedback architecture with low-distortion signal mirrors and active output/input imbalance compensation. Its transimpedance gain stage enables stable operation with feedback resistors ≥499 Ω and supports gains from −1 to +10.

It operates across −40°C to +85°C with input common-mode range of −3.9 V to +3.9 V (±5 V supply), 59 dB PSRR, and 56 dB CMRR. The amplifier is not unity-gain stable in standard configurations but achieves 0.1 dB flatness up to 90 MHz at G = +2 with 150 Ω load.

Key Specifications

Pinout & Package

AD8007ARZ is packaged in an 8-lead SOIC (R) with exposed pad (RoHS-compliant, JEDEC MS-012). Pin 1 is marked by a dot; pins 1, 4, and 7 are no-connect (NC) internally and must be left unconnected or tied to ground only if required for mechanical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, low-distortion amplifier applications.

Compared with LMH6629MA/NOPB and ADA4898-1ARZ, AD8007ARZ uniquely balances 650 MHz bandwidth, −83 dBc distortion at 20 MHz, and 9 mA power in SOIC-8-making it optimal for cost-sensitive, high-SFDR IF and instrumentation amplifiers where CFB stability and layout discipline are manageable.

Availability

AD8007ARZ is available at Aetrix Electronics and suitable for instrumentation signal conditioning, IF amplification in communications receivers, and DAC output buffering requiring stable component supply and guaranteed long-term manufacturability.

Supply support for AD8007ARZ 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 AD8007ARZ belongs to Analog Devices' ultralow-distortion current-feedback amplifier product line, designed specifically for high-fidelity signal chain applications including test & measurement, communications infrastructure, and precision data acquisition.

FAQ

What is the maximum recommended capacitive load for AD8007ARZ?

The AD8007ARZ is characterized to drive up to 8 pF capacitive load with ≤30% overshoot under standard test conditions. Driving >10 pF requires series output snubbing (e.g., 10 Ω resistor) or careful PCB layout to maintain stability and transient fidelity. This limit arises from the CFB architecture's sensitivity to output node capacitance, which can degrade phase margin and increase settling time. Always verify stability with actual load and layout using the AD8007ARZ evaluation board guidelines.

Does AD8007ARZ support single-supply operation?

AD8007ARZ is specified and characterized for dual-supply operation (±5 V to ±6 V). While it can operate from a single +10 V or +12 V rail with output referenced to mid-supply, its input common-mode range is limited to 1.1 V to 3.9 V under +5 V supply - restricting usable headroom. Single-supply use requires level-shifting circuitry and violates the −40°C to +85°C industrial rating unless validated per application. For true single-supply designs, consider the AD8001 or ADA4800 families instead of AD8007ARZ.

What is the purpose of the NC pins on AD8007ARZ?

Pins 1, 4, and 7 of AD8007ARZ are designated No Connect (NC) and are not bonded internally. They serve no electrical function and must remain unconnected in the PCB layout. Routing traces or vias to these pins introduces parasitic capacitance and crosstalk that degrade high-frequency performance and harmonic distortion. Per Analog Devices' layout recommendations, NC pins may be grounded only for mechanical reinforcement - never for electrical purposes - and grounding should occur at the package edge, not through internal planes.

How does AD8007ARZ achieve its ultralow distortion performance?

AD8007ARZ achieves ultralow distortion through three proprietary design elements: (1) low-distortion high-precision signal mirrors replacing conventional current mirrors to suppress nonlinear junction capacitance effects; (2) active output-stage imbalance compensation generating IDO current to cancel voltage-induced distortion; and (3) symmetric top-to-bottom layout minimizing even-order harmonics. These features are implemented in Analog Devices' XFCB process and are validated by −83 dBc HD2 at 20 MHz - a specification directly attributable to this architecture, not external compensation.

Can AD8007ARZ replace AD8007AR in existing designs?

Yes, AD8007ARZ is the RoHS-compliant, lead-free, green packaging variant of AD8007AR and is a direct drop-in replacement. Both share identical electrical specifications, pinout, thermal characteristics, and SOIC-8 footprint. The "Z" suffix denotes lead-free termination and halogen-free molding compound; no layout, decoupling, or biasing changes are required when migrating from AD8007AR to AD8007ARZ. Analog Devices confirms full functional and mechanical equivalence per datasheet Rev. E ordering guide.