Analog Devices Inc. ADA4692-4ARUZ-RL

Overview

ADA4692-4ARUZ-RL from Analog Devices is a quad rail-to-rail output operational amplifier optimized for low-power, low-noise precision signal conditioning in battery-powered and space-constrained systems. It delivers 3.6 MHz gain bandwidth, 16 nV/√Hz voltage noise density at 1 kHz, 180 µA per amplifier supply current, 0.5 pA typical input bias current, and operates from 2.7 V to 5 V single supply - enabling high-fidelity photodiode amplification and portable medical sensor front-ends.

For engineers reviewing the ADA4692-4ARUZ-RL datasheet, ADA4692-4ARUZ-RL pinout, ADA4692-4ARUZ-RL application, or ADA4692-4ARUZ-RL equivalent, key selection criteria include its rail-to-rail output swing with <33 mV VOL (RL = 2 kΩ), ultra-low input bias for high-impedance sources, guaranteed −40°C to +125°C operation, and TSSOP-14 packaging suitable for automated assembly and thermal management in compact analog signal chains.

Technical Context

The ADA4692-4ARUZ-RL belongs to the ADA469x family of micropower precision op amps featuring CMOS input stages and fully differential output stages. Its architecture supports stable unity-gain operation (phase margin ≥49°) with 35 pF load capacitance and exhibits low distortion (0.003% THD+N at 1 kHz) across audio and instrumentation bands.

No shutdown functionality is integrated - distinguishing it from the pin-compatible ADA4691-4 variant - making it ideal for always-on sensing nodes where deterministic power behavior and absence of enable timing constraints are required. Input common-mode range extends to within 300 mV of rails, and output swings to within 33 mV of V– and 30 mV of V+ under 2 kΩ load.

Key Specifications

Pinout & Package

The ADA4692-4ARUZ-RL is housed in a 14-lead TSSOP (RU-14) package with exposed pad for thermal enhancement and mechanical stability. Pin 1 is marked by a notch or dot; the exposed pad must be soldered to a thermal land connected to V– for optimal junction temperature control.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADA4691-4ARUZ-RL, the ADA4692-4ARUZ-RL removes shutdown logic to reduce quiescent uncertainty and simplify layout; versus AD8694ARUZ, it trades bandwidth for 3.4× lower supply current and extended temperature qualification - making it the preferred choice for always-on, thermally constrained, battery-operated precision analog front-ends.

Availability

ADA4692-4ARUZ-RL is available at Aetrix Electronics and suitable for photodiode amplification, portable medical sensing, and low-side current sense applications requiring stable component supply, long-term lifecycle assurance, and guaranteed extended temperature performance.

Supply support for ADA4692-4ARUZ-RL 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 ADA469x family was designed specifically for ultra-low-power, high-precision signal conditioning in portable and harsh-environment applications - emphasizing rail-to-rail operation, femtoamp input bias, and robust industrial temperature grading.

FAQ

What is the maximum operating temperature range for the ADA4692-4ARUZ-RL?

The ADA4692-4ARUZ-RL is fully specified from −40°C to +125°C, with all key parameters - including offset voltage drift (≤4 µV/°C), supply current (≤275 µA/channel), and CMRR (≥68 dB) - guaranteed across this extended industrial temperature range. This makes ADA4692-4ARUZ-RL suitable for under-hood automotive, industrial motor control, and outdoor instrumentation deployments where ambient temperatures exceed standard commercial limits.

Does the ADA4692-4ARUZ-RL support single-supply operation?

Yes, the ADA4692-4ARUZ-RL supports true single-supply operation from 2.7 V to 5 V. Its input common-mode range extends to 300 mV below V– (i.e., to ground in single-supply mode), and its rail-to-rail output swings within 33 mV of V– and 30 mV of V+ under 2 kΩ load. This enables direct interfacing with microcontroller ADCs and reference buffers without level-shifting circuitry - a key advantage of ADA4692-4ARUZ-RL in cost-sensitive portable designs.

How does the ADA4692-4ARUZ-RL differ from the ADA4691-4ARUZ-RL?

The ADA4692-4ARUZ-RL is functionally identical to the ADA4691-4ARUZ-RL in all AC and DC specifications (gain bandwidth, noise, offset, supply current), but omits the dual shutdown pins present on ADA4691-4ARUZ-RL. This eliminates enable/disable timing dependencies, reduces pin count complexity, and ensures deterministic power behavior - making ADA4692-4ARUZ-RL preferable for always-on sensor nodes where shutdown control is unnecessary.

Can the ADA4692-4ARUZ-RL drive capacitive loads without instability?

Yes, the ADA4692-4ARUZ-RL is stable driving up to 200 pF directly, as confirmed by small-signal overshoot testing and phase margin measurements (≥49° at 1 MHz with 35 pF load). This capability allows ADA4692-4ARUZ-RL to interface directly with ADC input capacitors, long PCB traces, and piezoelectric transducers without external isolation resistors - simplifying layout and preserving signal fidelity in filter and driver applications.

What is the typical input offset voltage for the ADA4692-4ARUZ-RL?

The typical input offset voltage for the ADA4692-4ARUZ-RL is 500 µV at 25°C, with a maximum of 2.5 mV over temperature (−40°C to +125°C) under specified common-mode conditions. This low and tightly bounded offset - combined with ≤4 µV/°C drift - ensures minimal calibration burden in precision measurement systems, making ADA4692-4ARUZ-RL well-suited for uncalibrated portable instrumentation and factory-set industrial sensors.