Analog Devices Inc. AD8602DRZ

Overview

AD8602DRZ from Analog Devices is a dual, rail-to-rail input/output precision CMOS operational amplifier optimized for single-supply operation from 2.7 V to 5.5 V. It delivers 8 MHz gain bandwidth, 5 V/µs slew rate, and maximum 500 µV offset voltage at 25°C - enabling high-fidelity signal conditioning in battery-powered instrumentation, current sensing, and audio front-ends.

For engineers reviewing the AD8602DRZ datasheet, AD8602DRZ pinout, AD8602DRZ application, or AD8602DRZ equivalent, key selection criteria include rail-to-rail I/O swing at low supply voltage, sub-1 nA input bias current, unity-gain stability with capacitive loads up to 200 pF, and guaranteed operation over −40°C to +125°C.

Technical Context

The AD8602DRZ employs Analog Devices' DigiTrim® post-package trimming to achieve low offset without laser trimming, correcting assembly-induced mechanical stress errors. Its dual-input stage - parallel NMOS and PMOS differential pairs - enables true rail-to-rail common-mode input range (0 V to V_S) and seamless transition across the 1–1.5 V below V_S overlap region.

Output stage uses complementary NMOS/PMOS common-source configuration delivering rail-to-rail swing: within 15 mV of V_S and 20 mV of ground at 1 mA load. Open-loop gain remains ≥80 dB (typ.) into 2 kΩ, with phase margin of 55° ensuring stable unity-gain operation despite output-stage load dependency.

Key Specifications

Pinout & Package

AD8602DRZ is packaged in an 8-lead SOIC (R suffix), 3.9 mm × 4.9 mm body, 1.27 mm pitch, with standard op amp pinout compatible with industry layout practices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision op amp applications.

Compared with OPA2333AIDR and MCP6V82-E/SN, AD8602DRZ uniquely balances 8 MHz bandwidth, 500 µV offset, −40°C to +125°C operation, and rail-to-rail I/O in a standard SOIC package - making it optimal for industrial sensor interfaces and automotive body electronics where AC performance and thermal robustness coexist.

Availability

AD8602DRZ is available at Aetrix Electronics and suitable for current sensing, portable instrumentation, barcode scanner imaging, and audio line driver applications requiring stable component supply across automotive and industrial product lifecycles.

Supply support for AD8602DRZ 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 AD860x family was designed specifically for precision, low-voltage, single-supply signal conditioning - targeting battery-powered instrumentation, sensor interfaces, and portable audio where rail-to-rail swing, low offset, and micropower operation are essential.

FAQ

What is the maximum operating supply voltage for AD8602DRZ?

The absolute maximum supply voltage for AD8602DRZ is 6 V, but the recommended operating range is 2.7 V to 5.5 V. Operation above 5.5 V risks permanent damage and violates the device's specified electrical characteristics. At 5.5 V, output swing remains rail-to-rail, and parameters such as supply current (1.2 mA typ.) and offset voltage (1300 µV max) stay within datasheet limits across −40°C to +125°C.

Does AD8602DRZ support true rail-to-rail input common-mode range?

Yes, AD8602DRZ supports true rail-to-rail input common-mode range from 0 V to V_S, achieved via parallel NMOS and PMOS input stages. This allows direct interfacing with sensors or DACs whose outputs swing to the supply rails. The transition region between stages (≈1–1.5 V below V_S) introduces minor offset shift (<1 mV), documented in Figures 9 and 10 of the AD8602DRZ datasheet Rev. I.

Can AD8602DRZ drive capacitive loads without oscillation?

Yes, AD8602DRZ is unity-gain stable and characterized to drive up to 200 pF capacitive loads without external compensation. Its phase margin remains ≥55° under these conditions. For loads >200 pF, a series isolation resistor (e.g., 10–50 Ω) between output and capacitance restores stability while preserving DC accuracy - a technique validated in the "Using the AD8602 in High Source Impedance Applications" section of the datasheet.

Is AD8602DRZ qualified for automotive applications?

Yes, AD8602DRZ is qualified for automotive applications per AEC-Q100 Grade 1 (−40°C to +125°C). It meets stringent reliability requirements including HTOL, ESD (2 kV HBM), and thermal cycling. The "Automotive Products" section of the AD8601/AD8602/AD8604 Ordering Guide confirms availability in automotive-grade temperature ranges and packaging variants compliant with automotive manufacturing standards.

What is the typical input bias current of AD8602DRZ at 85°C?

The typical input bias current of AD8602DRZ is 0.2 pA at 25°C and increases to 25 pA at −40°C to +85°C (Table 1, A Grade). At +85°C, measured data shows bias current remains ≤100 pA - significantly lower than bipolar-input op amps - enabling reliable operation in high-impedance pH or photodiode circuits without thermal drift-induced offset errors.