Analog Devices Inc. OP471GS

Overview

OP471GS from Analog Devices is a monolithic quad operational amplifier optimized for high-speed, low-noise signal conditioning in precision instrumentation and audio systems. It delivers 8 V/µs slew rate, 6.5 MHz gain bandwidth, 11 nV/√Hz input voltage noise at 1 kHz (max), ±13 V output swing into ≥2 kΩ, and 105 dB common-mode rejection - enabling use in low-phase-error amplifiers and differential line drivers.

For engineers reviewing the OP471GS datasheet, OP471GS pinout, OP471GS application, or OP471GS equivalent, key selection criteria include its unity-gain stability, matched quad architecture for gain block consistency, low 0.8 mV max input offset voltage over temperature, and compatibility with industry-standard 16-lead SOIC layouts for drop-in upgrades of TL084 or LM148-based designs.

Technical Context

The OP471GS employs a bipolar input stage operating at high collector currents to achieve ultra-low voltage noise, trading off higher current noise (0.4 pA/√Hz @ 1 kHz) - a deliberate design choice validated across military-grade temperature ranges. Its open-loop gain exceeds 500,000 V/V into 10 kΩ, ensuring high DC accuracy in closed-loop configurations.

Internal matching between all four amplifiers enables precise quad-buffering and instrumentation amplifier topologies. The device features back-to-back diode-protected inputs without current-limiting resistors - preserving noise performance but requiring external series resistance (>100 Ω) during asymmetric power-up to prevent parasitic conduction.

Key Specifications

Pinout & Package

OP471GS is supplied in a 16-lead small-outline integrated circuit (SOIC) package with standard JEDEC MS-012AC footprint and 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant and rated for –40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL084CDR and OP470GP, the OP471GS uniquely balances low noise, high speed, and wide-temperature operation in a single quad SOIC - making it optimal for precision industrial data acquisition where both dynamic range and DC accuracy are concurrently required.

Availability

OP471GS is available at Aetrix Electronics and suitable for precision instrumentation, professional audio infrastructure, and industrial data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for OP471GS 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 Wilmington, MA.

The OP471GS belongs to Analog Devices' precision op amp product line, engineered specifically for applications demanding low noise, high speed, and exceptional channel matching - such as medical instrumentation, seismic sensing, and broadcast audio.

FAQ

What is the maximum operating temperature range for the OP471GS?

The OP471GS is rated for operation from –40°C to +85°C, meeting extended industrial temperature requirements. This range is confirmed in the Ordering Guide and Absolute Maximum Ratings tables, where OP471GS is explicitly listed under the XIND grade with 1.8 mV max input offset voltage and full-spec performance across the entire span.

Does the OP471GS require external compensation for unity-gain stability?

No, the OP471GS is internally compensated for unity-gain stability. The General Description states "unity-gain stable" as a core feature, and the Typical Performance Characteristics (TPC 16) confirm 57° phase margin at unity gain - eliminating need for external capacitors or resistor networks in follower or buffer configurations.

Can the OP471GS drive capacitive loads without oscillation?

Yes, the OP471GS is designed to drive large capacitive loads stably. Figure 11 shows a recommended decoupling network (C1 = 200 pF, R3 = 50 Ω) for loads up to 1000 pF. Its unity-gain compensation and robust phase margin ensure stability even with direct 1 nF loads when proper supply bypassing (≥10 µF + 0.1 µF) is implemented.

What is the guaranteed minimum open-loop gain for the OP471GS?

The OP471GS guarantees a minimum open-loop voltage gain of 300 V/mV (i.e., 300,000 V/V) into a 10 kΩ load at 25°C, per the OP471G column in the Electrical Characteristics table. This ensures ≤0.0033% gain error in a 100× closed-loop configuration with 10 kΩ feedback.

Is the OP471GS pin-compatible with the TL084 family?

Yes, the OP471GS uses the industry-standard 16-lead SOIC pinout and is explicitly stated to be pin-compatible with TL084 and TL074 in the General Description. Pin functions match identically: OUT A (1), –IN A (2), +IN A (3), V+ (4), +IN B (5), –IN B (6), OUT B (7), OUT D (8), –IN D (9), +IN D (10), V– (11), +IN C (12), –IN C (13), OUT C (14), NC (15–16).