Analog Devices Inc. AD8039ARZ

Overview

AD8039ARZ from Analog Devices is a dual, low-power, voltage-feedback operational amplifier optimized for high-speed signal conditioning in space- and power-constrained systems. It delivers 350 MHz −3 dB bandwidth (G = +1), 425 V/μs slew rate, and 8 nV/√Hz input voltage noise at 100 kHz, operating from ±5 V or single 5 V supply. It serves as a precision ADC driver, active video filter, and level-shifting buffer in battery-powered instrumentation.

For engineers reviewing the AD8039ARZ datasheet, AD8039ARZ pinout, AD8039ARZ application, or AD8039ARZ equivalent, key selection criteria include its dual-channel 350 MHz bandwidth, 1.0 mA per amplifier quiescent current, rail-to-rail output swing within 1 V of rails, −70 dB output-to-output crosstalk at 5 MHz, and compatibility with capacitive loads up to 20 pF.

Technical Context

The AD8039ARZ employs a voltage-feedback architecture with fully differential inputs and single-ended outputs per channel, supporting gain configurations from +1 to +10. Its XFCB process enables simultaneous low noise (8 nV/√Hz, 600 fA/√Hz) and low quiescent current (1.0 mA/amp typical).

It features rail-to-rail input common-mode range (−4 V to +4 V on ±5 V supplies), output swing to within 1 V of either supply rail, and stable operation driving up to 20 pF capacitive loads without external compensation - critical for A/D converter interface and video filtering applications.

Key Specifications

Pinout & Package

AD8039ARZ is packaged in an 8-lead SOIC (R) with exposed pad (RoHS-compliant, JEDEC MS-012). Pin 1 is VOUT1, Pin 2 is –IN1, Pin 3 is +IN1, Pin 4 is –VS, Pin 5 is +IN2, Pin 6 is –IN2, Pin 7 is VOUT2, Pin 8 is +VS. Pins labeled NC are not internally connected.

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 ADA4891-2ARZ, the AD8039ARZ uniquely balances 350 MHz bandwidth, 1.0 mA/amp power, and −70 dB crosstalk - making it the only dual op-amp qualified for portable high-speed data acquisition where both speed and sub-2 mA dual-channel operation are mandatory.

Availability

AD8039ARZ is available at Aetrix Electronics and suitable for battery-powered instrumentation, high-speed ADC interface circuits, and active video filtering applications requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.

Supply support for AD8039ARZ 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, with design centers worldwide.

The AD8039ARZ belongs to Analog Devices' low-power, high-speed voltage-feedback op-amp product line, engineered specifically for portable test equipment, medical imaging front-ends, and energy-efficient signal chain architectures.

FAQ

What is the maximum capacitive load the AD8039ARZ can drive without instability?

The AD8039ARZ is characterized for stable operation with up to 20 pF capacitive load at G = +2 with ≤30% overshoot. Driving larger loads requires a small series resistor (e.g., 10–22 Ω) at the output to isolate the capacitance. This value is confirmed in Table 1 under "Capacitive Load Drive" and validated in Figures 27–28 of the Rev. G datasheet for both ±5 V and 5 V supplies.

Does the AD8039ARZ have a disable or power-down feature?

No, the AD8039ARZ does not include a disable function. That feature is exclusive to the AD8038 single-channel variant in the 8-lead SOIC package (Pin 8 = DISABLE). The AD8039ARZ has no dedicated disable pin and draws 1.0 mA per amplifier continuously under normal operation, as specified in Table 1 and General Description section of the Rev. G datasheet.

What is the input common-mode voltage range for the AD8039ARZ on ±5 V supplies?

On ±5 V supplies, the AD8039ARZ supports an input common-mode voltage range of ±4 V (i.e., −4 V to +4 V), as stated in Table 1 under "Input Common-Mode Voltage Range" and confirmed in the General Description: "wide input common-mode range of 1 V from either rail." This allows direct interfacing with signals referenced to midsupply or rail-based sources.

Can the AD8039ARZ operate from a single 3.3 V supply?

Yes, the AD8039ARZ supports single-supply operation from 3.0 V to 12 V, including 3.3 V. At 3.3 V, it maintains 275 MHz −3 dB bandwidth (G = +1, 0.2 V p-p), 340 V/μs slew rate, and rail-to-rail output swing (0.9 V to 2.4 V), as verified in Table 2. Input common-mode range becomes 1.0 V to 2.3 V under these conditions.

What is the output-to-output crosstalk specification for the AD8039ARZ?

The AD8039ARZ specifies −70 dB output-to-output crosstalk at 5 MHz and G = +2, as documented in Table 1 and Figure 36 of the Rev. G datasheet. This measurement reflects isolation between VOUT1 and VOUT2 when one channel is driven with a 1 V p-p sine wave - critical for maintaining signal integrity in dual-channel differential ADC driver topologies.