ADA2200ARUZ

Overview

The ADA2200ARUZ is a synchronous demodulator and configurable analog filter from Analog Devices, designed for precision magnitude and phase measurements in low-power sensor signal conditioning applications. It utilizes sampled analog technology to perform signal processing entirely in the analog domain via charge sharing among capacitors, eliminating quantization noise. The device integrates an analog low-pass decimation filter, a programmable infinite impulse response (IIR) filter, and a mixer. Key electrical specifications include a supply voltage range of 2.7 V to 3.6 V, a typical supply current of 395 μA at a 500 kHz clock input, and operation over an industrial temperature range of −40°C to +85°C. It features rail-to-rail outputs capable of directly driving analog-to-digital converters.

Feature Summary

• Synchronous demodulation with signal input bandwidths up to 30 kHz and phase detection sensitivity of 9.3 m°θREL rms.
• Configurable analog filtering including a fixed low-pass decimation filter and a programmable IIR filter that tracks the input carrier frequency.
• Flexible system interface supporting 3-wire/4-wire SPI or seamless boot from I2C EEPROMs.
• Single-ended or differential signal inputs and outputs with rail-to-rail capability.

Applications

• Sensor signal conditioning
• Lock-in amplifiers
• Phase detectors
• Precision tunable filters
• Signal recovery

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific package variant matches design requirements, as the standard part is housed in a 16-lead TSSOP. Check for any recent production changes or obsolescence notices on the official Analog Devices website before finalizing procurement plans.

Selection Notes

Select this component when precise amplitude and phase measurements are required in noisy environments. Ensure the system clock frequency aligns with the desired demodulation bandwidth and filter settings. Verify that the power supply voltage remains within the 2.7 V to 3.6 V range to maintain specified performance characteristics and low power consumption.

Part Context

The ADA2200 belongs to the ADA2200 series of synchronous demodulators. It is specifically engineered for industrial, medical, and communications markets where low power consumption and high precision are critical. The device simplifies signal chain design by reducing downstream digital signal processing requirements through its integrated analog filtering capabilities.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices technical support for potential alternatives if the ADA2200ARUZ is unavailable or obsolete.

FAQ

How does the ADA2200 handle quantization noise?

The ADA2200 performs signal processing entirely in the analog domain using sampled analog technology and charge sharing among capacitors, which eliminates the effects of quantization noise and rounding errors associated with traditional ADC sampling.

What is the maximum demodulation signal bandwidth?

The demodulation signal bandwidth can reach up to 30 kHz when the CLKIN frequency is set to 1 MHz.

Can the ADA2200 be configured without using SPI?

Yes, the device supports seamless boot configuration from I2C EEPROMs, allowing it to operate without continuous SPI communication after initialization.