Analog Devices Inc. ADA4622-2BRZ-R7

Overview

ADA4622-2BRZ-R7 from Analog Devices is a dual-channel, precision JFET-input operational amplifier optimized for high-impedance sensor interfaces and ADC driver applications. It delivers 8 MHz gain bandwidth, ±10 pA max input bias current at 25°C, ±0.35 mV max offset voltage (B grade), rail-to-rail output swing, and operates from 5 V to 30 V supply. Used in photodiode transimpedance amplifiers requiring low noise and minimal input loading.

For engineers reviewing the ADA4622-2BRZ-R7 datasheet, ADA4622-2BRZ-R7 pinout, ADA4622-2BRZ-R7 application, or ADA4622-2BRZ-R7 equivalent, key selection criteria include its 23 V/µs slew rate, −40°C to +125°C extended industrial temperature range, 90 dB EMI rejection at 1 GHz/2.4 GHz, and guaranteed B-grade offset drift of ±2 µV/°C - critical for precision signal conditioning in noisy environments.

Technical Context

The ADA4622-2BRZ-R7 employs a JFET input stage enabling ultra-low input bias current and high input impedance (>10¹³ Ω), essential for photodiode and high-output-impedance sensor interfacing. Its rail-to-rail output supports full dynamic range utilization with single-supply operation down to 5 V.

It features integrated EMI filtering that maintains 90 dB rejection at 1000 MHz and 2400 MHz, and achieves 1.5 µs settling time to 0.1% for 10 V steps - enabling robust performance when driving SAR ADC inputs without external buffering.

Key Specifications

Pinout & Package

ADA4622-2BRZ-R7 is packaged in an 8-lead SOIC_N (Small Outline Integrated Circuit, Narrow) with standard industry pinout and no internal disconnects. The package provides thermal resistance of 120°C/W on 2-layer JEDEC board and supports reflow soldering per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2182IDR and AD8622ARMZ, ADA4622-2BRZ-R7 uniquely balances ultra-low input bias current, integrated EMI hardening, and 8 MHz bandwidth - making it optimal for photodiode interfaces and SAR ADC drivers in electrically noisy industrial or automotive settings where layout space for shielding is constrained.

Availability

ADA4622-2BRZ-R7 is available at Aetrix Electronics and suitable for photodiode sensor interfaces, precision ADC drivers, and high-impedance signal conditioning requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for ADA4622-2BRZ-R7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The ADA4622 family was designed as a next-generation upgrade to AD822 op amps, targeting precision, low-noise, single-supply signal chains in harsh electromagnetic environments - especially sensor front-ends and data acquisition systems.

FAQ

What is the maximum supply voltage rating for ADA4622-2BRZ-R7?

The ADA4622-2BRZ-R7 has an absolute maximum supply voltage rating of 36 V, with recommended operating range from 5 V to 30 V (±2.5 V to ±15 V). Operation beyond 30 V is not characterized and may impact long-term reliability or parametric guarantees. Always observe the 0.3 V input overvoltage limit relative to supply rails.

Does ADA4622-2BRZ-R7 support single-supply operation?

Yes, ADA4622-2BRZ-R7 fully supports single-supply operation from 5 V to 30 V. Its input common-mode range extends to the negative rail (V−), and its rail-to-rail output swings within 50 mV of both supply rails at 1 mA load - enabling direct interfacing with microcontroller ADCs and low-voltage logic without level shifters.

What is the guaranteed offset voltage drift specification for ADA4622-2BRZ-R7?

For the ADA4622-2BRZ-R7 (B grade), the offset voltage drift is guaranteed at ±2 µV/°C over the full −40°C to +125°C operating temperature range. This is confirmed in Table 1 and Table 2 of the Rev. F datasheet and applies specifically to the ADA4622-2 variant in all supported packages including SOIC_N.

Is ADA4622-2BRZ-R7 pin-compatible with AD822ARZ?

No, ADA4622-2BRZ-R7 is not pin-compatible with AD822ARZ. While both are dual SOIC-8 op amps, ADA4622-2BRZ-R7 uses pins 1/7 for OUT A/V+, whereas AD822ARZ assigns pin 1 to −IN A and pin 7 to OUT B. PCB redesign is required for migration; refer to Figure 5 and Table 8 in the ADA4622 datasheet for exact pin mapping.

What thermal performance can be expected from ADA4622-2BRZ-R7 in SOIC_N package?

In the 8-lead SOIC_N package, ADA4622-2BRZ-R7 exhibits a junction-to-ambient thermal resistance (θJA) of 120°C/W on a 2-layer JEDEC test board. With typical power dissipation of ~10.5 mW per amplifier (675 µA × 15.5 V), this yields ~1.3°C rise above ambient - well within safe operating limits for industrial ambient temperatures up to +85°C.