Analog Devices Inc. AD534KH/+

Overview

AD534KH/+ from Analog Devices is a laser-trimmed, monolithic four-quadrant analog multiplier IC with ±0.5% maximum total multiplication error over 0°C to +70°C, differential high-impedance X/Y/Z inputs, 10 V nominal scale factor (adjustable down to 3 V), and 1 MHz small-signal bandwidth. It performs precise analog computation including multiplication, division, squaring, and square-rooting in high-stability instrumentation and signal processing systems.

For engineers reviewing the AD534KH/+ datasheet, AD534KH/+ pinout, AD534KH/+ application, or AD534KH/+ equivalent, this page delivers verified functional identity, TO-100 metal-can package mapping, confirmed 10-pin terminal roles, real-world transfer function behavior, and two validated alternative parts for precision analog computing designs.

Technical Context

The AD534KH/+ implements a translinear Gilbert-cell multiplier core with on-chip buried Zener reference and laser-trimmed thin-film resistors, enabling guaranteed ±0.5% total error without external trimming. Its fully differential architecture supports simultaneous high common-mode rejection (≥80 dB) and low feedthrough (±0.15% X, ±0.003% Y at 50 Hz).

All six inputs (X1/X2, Y1/Y2, Z1/Z2) are differential and high-impedance (10 MΩ), with ±12 V differential input range and ±10 V full-scale operation. The output amplifier provides 70 dB open-loop gain, ±11 V swing into ≥2 kΩ, and 20 V/μs slew rate - enabling stable closed-loop configurations for gain, filtering, and feedback-based functions.

Key Specifications

Pinout & Package

AD534KH/+ is supplied in a hermetically sealed 10-pin TO-100 metal can (H-10 package), rated for 0°C to +70°C operation and optimized for low thermal drift and EMI immunity in high-reliability analog systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD534LH/+, the AD534KH/+ trades 0.25% initial accuracy for lower unit cost and broader availability, while retaining identical functionality and package compatibility; versus MPY100KG, it offers guaranteed untrimmed performance and superior long-term stability without calibration overhead.

Availability

AD534KH/+ is available at Aetrix Electronics and suitable for high-reliability analog computing, precision instrumentation, and industrial signal conditioning requiring stable component supply across extended lifecycle programs.

Supply support for AD534KH/+ 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, serving precision measurement, industrial automation, and aerospace markets since 1965.

The AD534 product line was designed specifically for high-accuracy analog computation tasks - delivering laser-trimmed multiplier/divider functionality in monolithic form to replace hybrid or modular alternatives in test equipment, avionics, and process control.

FAQ

What is the guaranteed total multiplication error specification for AD534KH/+ over its operating temperature range?

The AD534KH/+ guarantees ±0.5% maximum total multiplication error over the full 0°C to +70°C operating temperature range, as specified in the Rev. D datasheet Table 1. This includes contributions from nonlinearity, scale factor error, and temperature drift - and requires no external trimming to meet. The error remains bounded under ±15 V supply conditions with RL ≥ 2 kΩ load, confirming production-ready accuracy for analog computing circuits.

Can AD534KH/+ operate as a voltage-controlled oscillator (VCO) core, and what design support exists?

Yes, AD534KH/+ is explicitly cited in the Applications section for accurate voltage-controlled oscillators and filters. Its ability to multiply a control voltage by a fixed coefficient enables linear-in-Hz or linear-in-dB VCO tuning. The datasheet provides functional schematics (e.g., Figure 18 for divider mode) and noise performance data (90 μV rms) that directly inform VCO phase noise and tuning linearity - making AD534KH/+ a validated analog VCO building block in precision timing systems.

Does AD534KH/+ support true four-quadrant multiplication, and how is this implemented electrically?

Yes, AD534KH/+ is a fully four-quadrant multiplier: it correctly computes signed products across all combinations of positive/negative X and Y inputs. This is achieved through fully differential, high-impedance X1/X2 and Y1/Y2 inputs - each pair accepting ±10 V full-scale differential signals - combined with translinear core architecture that preserves sign polarity throughout the multiplication process. The transfer function V_OUT = [(X1−X2)(Y1−Y2)/10 V] + Z2 inherently supports bipolar arithmetic without external level-shifting.

What is the recommended method to reduce scale factor below 10 V for AD534KH/+ without degrading accuracy?

To reduce the scale factor of AD534KH/+ from 10 V down to 3 V, connect an external resistor between the SF pin (Pin 2) and −VS (Pin 5). The required resistance is approximated by R_SF = (10 V − SF)/SF × 4.5 kΩ - e.g., 3 V scale factor needs ~10.5 kΩ. This method maintains full ±10 V input range and improves noise (to 0.4 μV/√Hz) and drift, as confirmed in Table 1 footnote 5 and Figure 12. No recalibration is needed.

Is AD534KH/+ pin-compatible with other AD534 grades such as AD534JH/+ or AD534LH/+ in the TO-100 package?

Yes, AD534KH/+ is fully pin-compatible with all AD534 variants offered in the 10-pin TO-100 (H-10) metal can package - including AD534JH/+ (±1%), AD534LH/+ (±0.25%), and AD534SH/+ (−55°C to +125°C). Pin numbering, terminal functions (X1, X2, SF, Y1, Y2, −VS, Z2, Z1, OUT, +VS), and mechanical dimensions are identical across these grades per Figures 4 and Table 5 in the Rev. D datasheet - enabling direct substitution within the same temperature grade family.