AD630AD

Overview

The AD630AD is a high-precision balanced modulator and demodulator integrated circuit manufactured by Analog Devices. It operates on silicon technology with a supply voltage range of 5 V to 16.5 V, typically utilizing a 15 V operating voltage. The device features a balanced modulation format and consumes 5 mA of current with a power dissipation of 600 mW. It is housed in a 20-pin SBDIP package designed for through-hole mounting. The component supports an operating temperature range from -25°C to +85°C.

Feature Summary

• Combines flexible commutating architecture with laser-adjusted thin-film resistors for superior accuracy and temperature stability
• Integrates two independent differential input stages with a precision comparator to minimize switching distortion
• Includes on-chip application resistor network enabling precise closed-loop gains without external components
• Features pin-programmable frequency compensation and adjustable common-mode and differential offset voltages

Applications

• Lock-in amplifier synchronous demodulation
• Precision signal processing in instrumentation systems
• High-gain or complex switch feedback topology circuits
• Two-channel multiplexing with configurable gain settings

Procurement Notes

Verify the specific suffix designation against official Analog Devices documentation to confirm performance grade and environmental ratings. Confirm that the SBDIP-20 package matches the target PCB footprint requirements. Ensure that the operating temperature range aligns with the intended application environment before finalizing procurement decisions.

Selection Notes

Select this component when high dynamic range and low noise extraction are required for weak signals. The internal resistor network simplifies design by reducing external component count for standard gain configurations. Consider the 1 kHz optimized frequency range for primary applications, though operation up to hundreds of kilohertz is supported.

Part Context

The AD630 belongs to the AD630 series of wireless and RF integrated circuits under the Analog Devices trademark. It serves as a specialized solution for precision analog signal processing tasks. The device replaces more expensive dedicated signal processing instruments by offering comparable performance within a compact monolithic IC structure.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing system architectures if considering alternative modulators/demodulators.