Analog Devices Inc. AD8027ARTZ-R2

Overview

AD8027ARTZ-R2 from Analog Devices is a single-channel, rail-to-rail input/output high-speed voltage feedback amplifier optimized for low-voltage, high-fidelity signal conditioning. It delivers 190 MHz −3 dB bandwidth (G = +1), 100 V/µs slew rate, and 120 dBc SFDR at 1 MHz - enabling precision ADC driving and video buffering in 3 V to ±5 V systems.

For engineers reviewing the AD8027ARTZ-R2 datasheet, AD8027ARTZ-R2 pinout, AD8027ARTZ-R2 application, or AD8027ARTZ-R2 equivalent, this page provides verified pin functions, real-world distortion performance across supply voltages, crossover threshold selection behavior, power-down timing, and validated alternatives for high-speed analog signal chain design.

Technical Context

The AD8027ARTZ-R2 employs a complementary bipolar XFCB process with dual PNP/NPN input pairs, enabling rail-to-rail input operation down to 2.7 V supply while maintaining no phase reversal beyond |V_S| + 200 mV. Its DISABLE/SELECT pin controls both power-down mode (low) and crossover threshold selection (tristate/high), directly altering which input pair dominates conduction.

It achieves wideband SFDR via laser-trimmed input offset per pair and constant transconductance across the 200 mV crossover region. The output stage supports rail-to-rail swing with 120 mA short-circuit current and 20 pF capacitive load drive - critical for driving ADC inputs and active filters without stability loss.

Key Specifications

Pinout & Package

AD8027ARTZ-R2 is packaged in a 6-lead SOT-23 surface-mount package (JEDEC MO-178AA), footprint-compatible with industry-standard high-speed op amps and optimized for minimal parasitic inductance in RF-sensitive layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADA4897-1ARJZ-R7 and LMH6629MA/NOPB, AD8027ARTZ-R2 uniquely balances 190 MHz bandwidth, 120 dBc SFDR, rail-to-rail I/O, and user-selectable crossover - making it optimal for mixed-signal systems requiring both speed and precision across full supply range.

Availability

AD8027ARTZ-R2 is available at Aetrix Electronics and suitable for ADC driver circuits, professional video signal chains, low-voltage instrumentation front-ends, and active filter interfaces requiring stable component supply across automotive, industrial, and medical product lifecycles.

Supply support for AD8027ARTZ-R2 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, serving precision instrumentation, communications, and industrial markets since 1965.

The AD8027ARTZ-R2 belongs to Analog Devices' high-speed precision amplifier product line, designed specifically for applications demanding simultaneous wide bandwidth, low distortion, rail-to-rail operation, and adaptive input-stage control in space-constrained, low-voltage systems.

FAQ

What is the function of the DISABLE/SELECT pin on the AD8027ARTZ-R2?

The DISABLE/SELECT pin on the AD8027ARTZ-R2 serves two distinct functions: when pulled low, it places the amplifier in power-down mode (reducing quiescent current to 370 µA); when left open (tristate) or pulled high, it selects the dominant input transistor pair - PNP for tristate, NPN for high - thereby shifting the input crossover threshold to minimize distortion near supply rails. This dual functionality is confirmed in the AD8027/AD8028 Rev. E datasheet, Tables 1–3 and Figure 60.

Does the AD8027ARTZ-R2 support true rail-to-rail input operation at 3 V supply?

Yes, the AD8027ARTZ-R2 supports rail-to-rail input operation at 3 V supply, with an input common-mode voltage range of −0.2 V to +3.2 V (Table 3, VS = 3 V). This allows the input to accept signals from ground up to 300 mV above the positive rail, enabling full utilization of the 0–3.3 V range in single-supply systems - a capability verified in the "Input Common-Mode Voltage Range" specification and Figure 20 of the Rev. E datasheet.

What is the maximum capacitive load the AD8027ARTZ-R2 can drive stably?

The AD8027ARTZ-R2 is characterized for stable operation with up to 20 pF capacitive load, exhibiting ≤30% overshoot in transient response (Table 1–3, "Capacitive Load Drive"). This makes it suitable for direct connection to ADC input capacitors without series isolation resistors. Stability under heavier loads requires external compensation, as detailed in the "Circuit Considerations" section of the Rev. E datasheet.

How does the AD8027ARTZ-R2 achieve 120 dBc SFDR at 1 MHz?

The AD8027ARTZ-R2 achieves 120 dBc SFDR at 1 MHz through a combination of laser-trimmed input offset per differential pair, constant transconductance across the 200 mV input crossover region, and low-noise XFCB process design (4.3 nV/√Hz voltage noise). These features suppress even-order harmonics and intermodulation products - confirmed in Figure 26 and Table 1 of the Rev. E datasheet under 2 V_p-p, RL = 24.9 Ω conditions.

Is the AD8027ARTZ-R2 pin-compatible with other members of the AD8027/AD8028 family?

No, the AD8027ARTZ-R2 (6-lead SOT-23) is not pin-compatible with the 8-lead SOIC (AD8027ARMZ) or 10-lead MSOP (AD8028ARMZ) variants. Pin mapping differs significantly: the SOT-23 places VOUT on Pin 1 and DISABLE/SELECT on Pin 5, whereas the SOIC places DISABLE/SELECT on Pin 8 and uses Pins 1 & 5 as DNC. This physical incompatibility is explicitly documented in Figures 4 and 5 of the Rev. E datasheet.