AD632SD

Overview

The AD632SD is a monolithic four-quadrant multiplier and divider manufactured by Analog Devices Inc. It features internally trimmed precision with a maximum multiplying error of ±2.0% over the extended temperature range of −55°C to +125°C. The device utilizes a differential high-impedance input transfer function: VO = [(X1 − X2)(Y1 − Y2)/10] + Z2. It operates on supply voltages ranging from ±8 V to ±22 V, drawing a quiescent current of 4 mA to 6 mA. The component is housed in a 14-Lead Side-Brazed Ceramic Dual In-Line Package (D-14).

Feature Summary

• Internally trimmed for high accuracy without external adjustments.
• Supports differential inputs for all X, Y, and Z terminals.
• Capable of providing up to ×10 gain via adjustable scale factor.
• Features low noise design suitable for precision signal processing.

Applications

• High quality analog signal processing
• Differential ratio and percentage computations
• Algebraic and trigonometric function synthesis
• Accurate voltage controlled oscillators and filters

Procurement Notes

Verify that the specific order matches the AD632SD suffix, which denotes the extended temperature grade (-55°C to +125°C) and D-14 package. Confirm RoHS compliance status if required, as indicated by potential 'Z' suffixes in other variants within the same family. Ensure the application environment stays within the specified ±8 V to ±22 V operating supply limits to maintain guaranteed performance levels.

Selection Notes

Select the AD632SD when operation in extreme environments between -55°C and +125°C is required. This variant guarantees a maximum multiplying error of ±2.0%, distinguishing it from lower-grade models like the AD632A or AD632B. It is appropriate for designs needing robust long-term stability and high reliability under adverse thermal conditions compared to standard industrial temperature parts.

Part Context

The AD632 series serves as an improved successor to the industry-standard AD532, offering pin-for-pin compatibility alongside enhanced specifications. It provides a fully differential high-impedance Z input and eliminates the need for separate instrumentation amplifiers in many configurations. The monolithic construction integrates thin-film resistors and a buried zener reference to preserve accuracy.

Replacement Considerations

The AD632TD is a direct functional replacement within the same package type but offers a tighter error specification of ±1.0%. For military applications requiring screening, the AD632TD/883B is available. The AD632SH provides the same temperature range in a hermetically sealed metal header package.

FAQ

What is the maximum multiplying error for the AD632SD?

The AD632SD has a guaranteed maximum multiplying error of ±2.0% over its full operating temperature range of -55°C to +125°C.

Does the AD632SD require external trimming?

No, the AD632SD is internally trimmed and does not require external trims to meet its specified performance characteristics.

What is the transfer function of the AD632SD?

The transfer function is VO = [(X1 − X2)(Y1 − Y2)/10] + Z2, where X, Y, and Z inputs are differential and high impedance.