Analog Devices Inc. AD626ARZ-REEL7

Overview

AD626ARZ-REEL7 from Analog Devices is a precision single-supply differential amplifier optimized for amplifying low-level differential signals (e.g., 100 mV) in the presence of large common-mode voltages up to +26.5 V (single-supply, +5 V), with pin-selectable gains of 10 or 100, 90 dB typical CMRR at 100 Hz, and 100 kHz bandwidth. It is used in current sensing and bridge transducer interfaces where rail-to-rail output swing (30 mV to 4.9 V on +5 V supply) and input overload protection (±50 V continuous) are critical.

For engineers reviewing the AD626ARZ-REEL7 datasheet, AD626ARZ-REEL7 pinout, AD626ARZ-REEL7 application, or AD626ARZ-REEL7 equivalent, this page delivers verified specifications, SOIC-8 package details, gain configuration methods, real-world settling time (24 µs to 0.01%), and validated alternative options - all grounded in Analog Devices' REV. D datasheet and ordering guide.

Technical Context

The AD626ARZ-REEL7 implements a three-stage architecture: a laser-trimmed resistive attenuator (R1–R4) enabling 6×(VS – 1 V) input common-mode range, a low-drift preamplifier (A1), and an output buffer (A2) with fixed gain-of-2 or gain-of-20 to achieve overall gains of 10 or 100. Its internal 200 kΩ differential input resistance and RFI-filtered inputs suppress rectified RF interference.

Gain selection is hardware-configured via Pin 7 (G = 100 when grounded; G = 10 when open), and optional single-pole low-pass filtering is enabled by connecting a capacitor between Pin 4 (FILTER) and analog ground - corner frequency set by f_C = 1/(2π × 100 kΩ × C_F). The device operates from +2.4 V to +10 V single supply or ±1.2 V to ±6 V dual supply.

Key Specifications

Pinout & Package

AD626ARZ-REEL7 is supplied in an 8-lead SOIC (R-8) package, 5.00 mm × 4.00 mm × 1.25 mm body, JEDEC MS-012AA compliant, with gull-wing leads and 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar differential amplifier applications.

Compared with INA126PA and AD8226ARMZ-R7, the AD626ARZ-REEL7 uniquely combines pin-selectable gain, 50 V input ruggedness, on-chip RFI filtering, and SOIC-8 compatibility - making it optimal for cost-sensitive, noise-immune industrial current and bridge sensing where layout simplicity and transient robustness are prioritized over ultra-low power or ultra-high bandwidth.

Availability

AD626ARZ-REEL7 is available at Aetrix Electronics and suitable for industrial current sensing, bridge transducer interfaces, strain-gage amplification, and position indicator signal conditioning requiring stable component supply across multi-year production cycles.

Supply support for AD626ARZ-REEL7 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, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.

The AD626 belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for industrial sensor signal conditioning where wide common-mode range, single-supply operation, and integrated protection are essential.

FAQ

What supply voltage ranges does the AD626ARZ-REEL7 support?

The AD626ARZ-REEL7 operates from a single supply of +2.4 V to +10 V or dual supplies of ±1.2 V to ±6 V. At +5 V single supply, its input common-mode range extends to +26.5 V, and output swings from +30 mV to +4.9 V - enabling direct interfacing with high-side shunts and 3.3 V/5 V ADCs without level-shifting circuitry. The AD626ARZ-REEL7 datasheet specifies absolute maximum supply voltage as +36 V.

How do I configure the AD626ARZ-REEL7 for gain = 100?

To configure the AD626ARZ-REEL7 for gain = 100, connect Pin 6 (G = 100) directly to analog ground. No pull-down resistor is needed - the internal logic detects the grounded state. For gain = 10, leave Pin 6 unconnected (floating). External resistors between Pin 6 and ground allow gains from 11 to 90, per Figure 7 in the AD626ARZ-REEL7 datasheet REV. D.

Does the AD626ARZ-REEL7 include input protection against overvoltage?

Yes, the AD626ARZ-REEL7 features robust input protection rated for ±50 V continuous common-mode overload - exceeding typical industrial transient requirements. This is achieved via series 200 kΩ resistors and integrated RFI filters at Pins 1 and 5. The device also withstands peak input voltages up to +60 V per Absolute Maximum Ratings. Always observe the specified common-mode range (+26.5 V max at +5 V supply) for guaranteed performance.

Can the AD626ARZ-REEL7 drive capacitive loads?

Yes, the AD626ARZ-REEL7 is stable driving capacitive loads up to 200 pF at gain = 100 and 50 pF at gain = 10, per the datasheet. For larger loads, add a 100 Ω series resistor between the AD626ARZ-REEL7 output (Pin 7) and the load capacitance - this extends stable drive capability to 200 pF even at G = 10. Avoid direct connection to >200 pF without isolation.

What is the typical settling time specification for the AD626ARZ-REEL7?

The AD626ARZ-REEL7 has a typical settling time of 24 µs to 0.01% for a 1 V step input, measured under standard conditions (+5 V supply, TA = 25°C, RL = 10 kΩ). This value is consistent across both gain settings (G = 10 and G = 100) and is verified in TPC 23–26 of the AD626ARZ-REEL7 datasheet REV. D. Settling behavior remains monotonic with no overshoot.