Analog Devices Inc. AD534LHZ

Overview

AD534LHZ from Analog Devices is a laser-trimmed, monolithic 4-quadrant analog multiplier IC with ±0.25% maximum total multiplication error (−10 V ≤ X, Y ≤ +10 V), fully differential high-impedance X/Y/Z inputs, and a pretrimmed 10.00 V scale factor. It implements the transfer function V_OUT = [(X₁ − X₂)(Y₁ − Y₂)/SF] + Z₂ and supports precision analog signal processing in voltage-controlled oscillators, rms-to-dc converters, and algebraic function synthesis.

For engineers reviewing the AD534LHZ datasheet, AD534LHZ pinout, AD534LHZ application, or AD534LHZ equivalent, this page delivers verified technical context, confirmed pin functions for the TO-100 metal can package, real-world application cards, and two validated alternative parts with documented functional and thermal differences - all grounded in Analog Devices' Rev. D datasheet and official package documentation.

Technical Context

The AD534LHZ uses translinear Gilbert-cell multiplication with on-chip buried Zener reference and laser-trimmed thin-film resistors to achieve ±0.25% max multiplication error over 0°C to +70°C. Its fully differential architecture enables high CMRR (≥90 dB at dc) and eliminates common-mode-induced gain errors across all inputs (X, Y, Z).

Scale factor is factory-set to 10.00 V but adjustable down to 3 V via external resistor between −VS and SF, reducing noise spectral density to 0.4 μV/√Hz while preserving ±12 V differential input range. Output stage features 20 V/μs slew rate, 1 MHz small-signal bandwidth, and 0.1 Ω output impedance for low-distortion closed-loop configurations.

Key Specifications

Pinout & Package

AD534LHZ is supplied in a hermetically sealed 10-pin TO-100 metal can package (H-10), optimized for low-noise analog environments and long-term stability in precision instrumentation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD534KHZ and MPY100KG, the AD534LHZ delivers superior accuracy (±0.25% vs. ±0.5%), integrated Z-summing for flexible transfer functions, and 2× higher bandwidth-making it the only choice for uncalibrated, high-linearity analog computation in production test systems.

Availability

AD534LHZ is available at Aetrix Electronics and suitable for precision instrumentation, automated test equipment, and industrial process control systems requiring stable component supply, long-term calibration integrity, and hermetic packaging for harsh environments.

Supply support for AD534LHZ 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 AD534LHZ belongs to Analog Devices' precision analog multiplier family, engineered for metrology-grade signal processing where laser-trimmed accuracy, differential input flexibility, and low-noise operation are mandatory.

FAQ

What is the guaranteed multiplication accuracy of the AD534LHZ over temperature?

The AD534LHZ guarantees ±0.25% maximum total multiplication error at TA = 25°C (−10 V ≤ X, Y ≤ +10 V) and ±0.5% over its full operating range of 0°C to +70°C. This specification is laser-trimmed at wafer level and does not require external calibration. Temperature coefficient of total error is ±0.008%/°C, meaning error increases by no more than 0.008% per degree Celsius deviation from 25°C. The AD534LHZ achieves this stability via on-chip buried Zener reference and laser-trimmed thin-film resistors.

Can the AD534LHZ operate with supply voltages other than ±15 V?

Yes, the AD534LHZ operates over a supply range of ±8 V to ±18 V. Rated performance (including ±0.25% error and 90 μV rms noise) is specified at ±15 V, but functional operation is maintained at ±8 V. At reduced supplies, output swing scales proportionally (e.g., ±11 V at ±15 V becomes ~±6.5 V at ±9 V), and input full-scale remains ±10 V due to internal scaling. The device's supply rejection is ±0.01%, ensuring minimal gain variation across the operating range. Always observe absolute maximum ratings: ±18 V for AD534LHZ.

Does the AD534LHZ support true 4-quadrant multiplication without external components?

Yes, the AD534LHZ supports true 4-quadrant multiplication natively using its fully differential X, Y, and Z inputs. All six terminals (X1/X2, Y1/Y2, Z1/Z2) are high-impedance and differential, enabling multiplication of any combination of positive/negative input signals without polarity restrictions or external op-amps. The transfer function V_OUT = [(X₁ − X₂)(Y₁ − Y₂)/10 V] + Z₂ is implemented entirely within the IC. No external resistors, trims, or amplifiers are needed to achieve ±0.25% 4-quadrant accuracy - confirmed in Table 1 of the AD534 Rev. D datasheet.

How is the scale factor adjusted on the AD534LHZ, and what effect does it have on noise?

The AD534LHZ scale factor is adjusted by connecting an external resistor between the SF pin and −VS. This reduces the nominal 10.00 V scale factor down to 3 V. As SF decreases, noise spectral density improves from 0.8 μV/√Hz (SF = 10 V) to 0.4 μV/√Hz (SF = 3 V), while preserving full ±12 V differential input range. Wideband noise drops from 90 μV rms to ~65 μV rms (10 Hz–10 kHz). The relationship is R_SF ≈ (4.5 kΩ × (10 V − SF))/SF; for SF = 3 V, R_SF ≈ 10.5 kΩ. This adjustment is fully supported in the AD534LHZ's internal architecture and does not affect accuracy or stability.

What package type is used for the AD534LHZ, and why is it significant for precision applications?

The AD534LHZ uses a hermetically sealed 10-pin TO-100 metal can package (H-10). This package provides superior moisture and contaminant barrier properties compared to plastic SOIC or DIP variants, ensuring long-term parameter stability in humid or chemically aggressive environments. Its low thermal resistance (θ_JA = 150°C/W) and matched metal-to-ceramic construction minimize thermally induced offset drift - critical for maintaining the AD534LHZ's ±0.25% accuracy and 50 μV/°C output offset drift spec. The H-10 package is explicitly listed in the AD534 Rev. D Ordering Guide for the AD534L grade.