Analog Devices Inc. AD632AHZ

Overview

AD632AHZ from Analog Devices is an internally trimmed, monolithic four-quadrant analog multiplier/divider IC with differential high-impedance X, Y, and Z inputs, ±0.5% maximum multiplying error at +25°C, 1 MHz small-signal bandwidth, and operation over −25°C to +85°C in a hermetically sealed TO-100 metal can package. It implements the transfer function [(X₁ − X₂)(Y₁ − Y₂)/10] + Z₂ and supports precision voltage-controlled oscillators, ratio computation, and algebraic function synthesis.

For engineers reviewing the AD632AHZ datasheet, AD632AHZ pinout, AD632AHZ application, or AD632AHZ equivalent, this page delivers verified specifications, functional context, real-world use cases, and validated alternative options for analog signal processing, instrumentation, and control system design.

Technical Context

The AD632AHZ uses translinear multiplier architecture with on-chip thin-film resistors and buried zener reference to achieve stable scale factor and low temperature drift. Its fully differential inputs support floating signal sources, and the Z-input enables algebraic summing without external op-amps.

It operates as a multiplier, divider, squarer, or square-rooter via reconfigured external connections. Divider bandwidth scales inversely with denominator magnitude, and feedthrough is minimized using VOS adjustment-Y-input feedthrough is 10× lower than X-input, enabling suppressed-carrier modulation.

Key Specifications

Pinout & Package

AD632AHZ is housed in a 10-pin hermetically sealed TO-100 metal can package (H-10), optimized for stability in harsh environments and long-term calibration retention.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD632BDZ and MPY100KG, the AD632AHZ uniquely combines hermetic TO-100 packaging, guaranteed ±0.5% error, full differential Z-input, and 1 MHz bandwidth-making it the only option qualified for high-stability, high-precision analog computation in extended-temperature industrial systems.

Availability

AD632AHZ is available at Aetrix Electronics and suitable for precision instrumentation, aerospace signal conditioning, and industrial process control requiring stable component supply across −25°C to +85°C operating range.

Supply support for AD632AHZ 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 AD632 product line was designed specifically for high-accuracy analog computation-including multiplication, division, squaring, and square-rooting-in test equipment, avionics, and precision control systems where trimming, stability, and wide dynamic range are critical.

FAQ

What is the guaranteed multiplying error specification for AD632AHZ over its full operating temperature range?

The AD632AHZ guarantees ±1.0% total multiplying error over its rated −25°C to +85°C temperature range. At +25°C, the error is tighter at ±0.5% maximum. This specification is tested and guaranteed per Analog Devices' Rev. D datasheet, Table 1, and reflects performance with ±15 V supplies and 2 kΩ load conditions. The AD632AHZ achieves this without external trims due to internal laser trimming of thin-film resistors.

Can AD632AHZ be used as a precision divider, and what is its accuracy in that mode?

Yes, AD632AHZ supports precision division with guaranteed ±0.35% total error when X = 10 V and −10 V ≤ Z ≤ +10 V, and ±1.0% error over 0.1 V ≤ X ≤ 10 V with same Z range. Its differential X and Z inputs allow floating numerator/denominator operation, and Figure 9 in the datasheet shows the standard connection. Accuracy degrades slightly at low denominator voltages, consistent with multiplier-based divider architectures.

Does AD632AHZ require external trimming to meet its specified accuracy?

No, AD632AHZ is internally trimmed at wafer level and requires no external trimming to meet its ±0.5% multiplying error specification at +25°C or ±1.0% over −25°C to +85°C. The VOS pin (Pin 9) is provided only for optional fine adjustment-typically used in ultra-high-accuracy systems where sub-0.1% residual offset must be nulled. Most applications operate within spec without any VOS connection.

What is the purpose of the Z1 and Z2 pins on AD632AHZ, and how do they differ from X and Y inputs?

Z1 and Z2 form a differential summing node that algebraically adds a third signal to the multiplier output: V_OUT = [(X₁ − X₂)(Y₁ − Y₂)/10] + Z₂. Unlike X and Y-which define the multiplication operands-Z accepts offset, numerator (in division), or calibration signals. Z2 is referenced to system ground, and Z1 is the noninverting input; their differential configuration preserves common-mode rejection, enabling precise ratiometric or offset-compensated operation.

Is AD632AHZ pin-compatible with the industry-standard AD532, and what improvements does it offer?

Yes, AD632AHZ is pin-for-pin compatible with the AD532 in the TO-100 package. Key improvements include ±0.5% vs. ±1% multiplying error, fully differential Z-input (vs. single-ended on AD532), improved supply rejection (±0.01% vs. ±0.05%), and lower noise (90 µV rms vs. 150 µV rms). These enhancements enable higher-accuracy analog computation without circuit redesign-only component replacement is needed.