Analog Devices Inc. AD534SD

Overview

AD534SD from Analog Devices is a laser-trimmed, monolithic four-quadrant analog multiplier/divider IC with ±1.0% maximum total multiplication error over −55°C to +125°C, differential high-impedance X/Y/Z inputs, 10 V nominal scale factor (adjustable to 3 V), and 1 MHz small-signal bandwidth - used in precision rms-to-dc conversion, voltage-controlled oscillators, and algebraic function synthesis.

For engineers reviewing the AD534SD datasheet, AD534SD pinout, AD534SD application, or AD534SD equivalent, this page delivers verified specifications, hermetic TO-100 package details, functional block context, real-world use cases in analog signal processing, and two validated alternative parts for extended-temperature multiplier applications.

Technical Context

The AD534SD implements a translinear Gilbert-cell multiplier core with buried Zener reference and laser-trimmed thin-film resistors, enabling guaranteed ±1.0% multiplication error across −55°C to +125°C without external trimming. Its fully differential architecture supports simultaneous high-impedance operation on all six inputs (X1/X2, Y1/Y2, Z1/Z2), preserving common-mode rejection up to 90 dB at dc.

Scale factor is pretrimmed to 10.00 V but adjustable via external resistor between −VS and SF pin, supporting gain configurations from ×1 to ×100. Output stage features 20 V/μs slew rate, 70 dB open-loop gain at 50 Hz, and ±11 V output swing into ≥2 kΩ load - optimized for closed-loop configurations including squarer, divider, and square-rooter modes.

Key Specifications

Pinout & Package

AD534SD is supplied in a hermetically sealed 10-pin TO-100 metal can package (H-10), rated for −55°C to +125°C operation, with θJA = 150°C/W and θJC = 25°C/W. Pins are arranged in single-row configuration with header-connected −VS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplier applications.

Compared with AD534SD, AD534T offers higher accuracy at identical temperature range and package, while MPY100KG trades military qualification for wider bandwidth and lower cost - making AD534SD the optimal balance of ruggedness, accuracy, and analog computing flexibility for harsh-environment systems.

Availability

AD534SD is available at Aetrix Electronics and suitable for high-reliability analog computing, precision instrumentation, and extended-temperature industrial control requiring stable component supply across long production lifecycles.

Supply support for AD534SD 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 design and manufacturing expertise spanning precision signal chains since 1965.

The AD534 product line was developed specifically for high-accuracy, wideband analog computation in military, aerospace, and industrial systems - delivering laser-trimmed performance previously limited to hybrid modules.

FAQ

What is the guaranteed multiplication accuracy of the AD534SD over its full operating temperature range?

The AD534SD guarantees ±1.0% maximum total multiplication error for input ranges −10 V ≤ X, Y ≤ +10 V across its rated operating temperature range of −55°C to +125°C. This specification is tested on all production units and reflects worst-case deviation from the ideal transfer function VOUT = [(X1−X2)(Y1−Y2)/10 V] + Z2 without external trimming. The AD534SD achieves this using laser-trimmed thin-film resistors and a buried Zener reference, ensuring stability under thermal stress.

Can the AD534SD operate as a divider, and what are the key connections required?

Yes, the AD534SD operates as a true four-quadrant divider using its differential Z inputs as numerator and differential X inputs as denominator. The standard connection applies the denominator signal to X1/X2, the numerator to Z1/Z2, and leaves Y1/Y2 grounded or biased - yielding VOUT = [10 V (Z2−Z1)/(X1−X2)] + Y1. This configuration supports floating-ratio computation with ±0.75% error at 10 V denominator, and bandwidth scales inversely with denominator magnitude per Figure 14 in the AD534 datasheet Rev. D.

What package type and thermal characteristics does the AD534SD have?

The AD534SD is supplied exclusively in a hermetically sealed 10-pin TO-100 metal can package (H-10) with θJA = 150°C/W and θJC = 25°C/W. The −VS pin is internally bonded to the metal header, providing a low-inductance ground path essential for high-frequency stability. This package is qualified for −65°C to +150°C storage and −55°C to +125°C continuous operation, making it suitable for aerospace, downhole, and defense applications where plastic packages would fail.

How is the scale factor adjusted on the AD534SD, and what effect does it have on noise performance?

The AD534SD scale factor is adjusted by connecting an external resistor between the SF pin and −VS, reducing the nominal 10.00 V scaling voltage down to 3 V. Per datasheet Rev. D Table 1, this adjustment lowers wideband noise from 90 μV rms to 1 mV rms and reduces noise spectral density from 0.8 μV/√Hz to 0.4 μV/√Hz - improving dynamic range for low-level signal processing. The relationship RSF ≈ (4.5 kΩ × SF)/(10 V − SF) determines required resistance.

Does the AD534SD support squaring and square-rooting functions, and what are their accuracy specs?

Yes, the AD534SD supports both squaring and square-rooting. As a squarer (X=Y), it achieves ±0.6% total error for −10 V ≤ X ≤ +10 V. As a square-rooter (Z1≤Z2), it delivers ±1.0% total error for 1 V ≤ Z ≤ 10 V. These modes rely on internal translinear architecture and laser-trimmed references - no external components are needed beyond standard supply decoupling. The square-rooter transfer function is √[10 V (Z2−Z1)] + X2, enabling true analog computation of magnitude functions.