AD632AD

Overview

The AD632AD is an internally trimmed monolithic four-quadrant multiplier and divider manufactured by Analog Devices Inc. It operates within a temperature range of -25°C to +85°C and utilizes a 14-lead Side-Brazed Ceramic Dual In-Line Package (D-14). The device supports a supply voltage range of ±8 V to ±18 V with a quiescent current of 6 mA. Key electrical parameters include a small signal bandwidth of 1 MHz, a slew rate of 20 V/µs, and a wideband noise of 90 µV rms from 10 Hz to 10 kHz. The maximum multiplying error for the B-grade device is ±0.5% at +25°C.

Feature Summary

• Internally trimmed precision architecture ensuring high accuracy without external adjustments.
• Fully differential high-impedance inputs for X, Y, and Z channels.
• Adjustable scale factor capability providing up to ×10 gain.
• Low noise design optimized for high-quality analog 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 the specific grade suffix (e.g., AD vs BD) to confirm the maximum multiplying error specification required for the application. Ensure the package type matches the D-14 ceramic DIP format. Confirm RoHS compliance status if applicable to the manufacturing batch. Validate that the operating temperature range meets the environmental requirements of the target system.

Selection Notes

Select this component when a high-precision, internally trimmed four-quadrant multiplier is required. The AD632AD offers a balance of low noise and high bandwidth suitable for complex control functions. Consider the adjustable scale factor feature if input preconditioning amplifiers are to be eliminated. Verify that the ±18 V maximum supply rating aligns with the available power rails in the circuit design.

Part Context

The AD632 series serves as a pin-for-pin compatible replacement for the industry standard AD532, featuring improved specifications and a fully differential high impedance Z input. It is designed to provide gains of up to ×10, often removing the need for separate instrumentation amplifiers. The device maintains accuracy under adverse conditions through excellent supply rejection and long-term stability of on-chip thin film resistors.

Replacement Considerations

The AD632AD is directly pin-compatible with the AD532. For higher accuracy requirements, consider the AD632BDZ variant which shares the same package but offers tighter error tolerances. Other variants like the AD632SD or AD632TD offer extended temperature ranges but utilize different package options or screening levels.

FAQ

What is the transfer function of the AD632?

The transfer function is VO = [(X1 − X2)(Y1 − Y2)/10] + Z2.

Can the AD632 operate as a variable gain amplifier?

Yes, it can be effectively employed as a variable gain differential input amplifier with high common-mode rejection.