Analog Devices Inc. ADA4610-2ARZ

Overview

ADA4610-2ARZ from Analog Devices is a dual-channel, precision JFET-input operational amplifier with rail-to-rail output, 0.4 mV max offset voltage (B grade), 7.30 nV/√Hz voltage noise density at 1 kHz, and ±5 V to ±15 V dual-supply operation. It delivers low input bias current (5 pA typical), no phase reversal, and unity-gain stability-ideal for high-impedance sensor signal conditioning in medical instruments and photodiode amplifiers.

For engineers reviewing the ADA4610-2ARZ datasheet, ADA4610-2ARZ pinout, ADA4610-2ARZ application, or ADA4610-2ARZ equivalent, this page provides verified specifications, SOIC-8 package terminal mapping, real-world use cases in precision current measurement and audio, and two validated alternative op amps with documented functional and application differences.

Technical Context

The ADA4610-2ARZ uses a precision JFET input stage enabling ultra-low input bias current (5 pA typ) and high input resistance (>10¹³ Ω), critical for guarding against leakage errors in shunt-based current sensing and photodiode transimpedance circuits. Its rail-to-rail output swing (±4.90 V on ±5 V supplies) and fast slew rate (21 V/µs rising, 46 V/µs falling) support wide dynamic range and rapid settling in multipole filter stages.

It features no phase reversal under overvoltage conditions, eliminating output latch-up risks when inputs exceed common-mode limits-a key reliability advantage over legacy JFET op amps. The device maintains stability with capacitive loads up to 100 pF and achieves 61° phase margin at unity gain, enabling robust closed-loop performance in precision instrumentation front-ends.

Key Specifications

Pinout & Package

ADA4610-2ARZ is supplied in an 8-lead SOIC package (R suffix), RoHS-compliant, with standard JEDEC MS-012AC footprint. Pin 1 is OUT A; exposed pad is not present in SOIC variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision JFET operational amplifier applications.

Compared with AD8512ARMZ and ADA4627-1ARZ, the ADA4610-2ARZ uniquely balances dual-channel integration, 5 pA input bias, rail-to-rail output, and 0.4 mV offset in a single SOIC-8 package-making it optimal for compact, low-power, high-precision dual-signal-path systems without trade-offs in noise, drift, or stability.

Availability

ADA4610-2ARZ is available at Aetrix Electronics and suitable for medical instrumentation, precision current measurement, and photodiode amplifier designs requiring stable component supply, long-term calibration integrity, and guaranteed RoHS-compliant sourcing.

Supply support for ADA4610-2ARZ 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 R&D and manufacturing operations worldwide.

The ADA4610 family was designed specifically for precision, low-noise, high-input-impedance applications-including medical diagnostics, analytical instrumentation, and high-fidelity audio-where JFET input characteristics outperform CMOS and bipolar alternatives.

FAQ

What is the maximum operating temperature range for the ADA4610-2ARZ?

The ADA4610-2ARZ is specified over the extended industrial temperature range of −40°C to +125°C. This rating applies to all electrical characteristics in Tables 2 and 3 of the Rev. I datasheet, including offset voltage drift, CMRR, and supply current. Operation outside this range may result in parametric degradation or permanent damage.

Does the ADA4610-2ARZ require external compensation for unity-gain stability?

No, the ADA4610-2ARZ is internally compensated and unity-gain stable. It achieves 61° phase margin at AV = 1 with a 2 kΩ load and exhibits no peaking or ringing in small-signal transient response (Figure 35). External compensation is unnecessary unless driving >100 pF capacitive loads beyond datasheet validation.

Is the ADA4610-2ARZ pin-compatible with other dual JFET op amps like the AD822 or AD8512?

No, the ADA4610-2ARZ is not pin-compatible with AD822 or AD8512. Its SOIC-8 pinout (OUT A, −IN A, +IN A, V−, +IN B, −IN B, OUT B, V+) differs from AD822 (V−, −IN A, +IN A, OUT A, OUT B, −IN B, +IN B, V+) and AD8512 (V−, −IN A, +IN A, OUT A, OUT B, −IN B, +IN B, V+). PCB layout must be designed specifically for ADA4610-2ARZ.

What is the typical input capacitance of the ADA4610-2ARZ, and how does it affect high-frequency stability?

The ADA4610-2ARZ has 3.1 pF differential and 4.8 pF common-mode input capacitance. These values are low enough to avoid significant phase lag in most feedback networks but require careful PCB layout-especially guard traces around +IN/−IN pins-to prevent instability when used in high-gain, high-frequency configurations above 1 MHz.

Can the ADA4610-2ARZ drive a 600 Ω load while maintaining rail-to-rail output swing?

Yes, the ADA4610-2ARZ delivers ±4.60 V output swing into a 600 Ω load on ±5 V supplies (Table 2), and ±14.25 V on ±15 V supplies (Table 3). Output voltage low is −4.90 V and high is +4.60 V under those conditions-confirming usable rail-to-rail performance even with moderate loads typical in line-driver and ADC interface applications.