AD7998BRUZ-1

Overview

The AD7998BRUZ-1 is an 8-channel, 12-bit successive approximation analog-to-digital converter (ADC) featuring an I2C-compatible serial interface. It operates from a single 2.7 V to 5.5 V supply and achieves a throughput rate of up to 188 kSPS with a typical conversion time of 2 µs. The device includes an internal multiplexer and track-and-hold amplifier capable of handling input frequencies up to 11 MHz. It supports standard, fast, and high-speed I2C modes, offers pin-selectable addressing via the AS pin, and provides an out-of-range alert function. The component is housed in a 20-lead TSSOP package and functions within a temperature range of −40°C to +85°C.

Feature Summary

• Supports standard, fast, and high-speed I2C communication modes for flexible bus integration.
• Integrates an 8-channel multiplexer with track-and-hold functionality for efficient multi-point sampling.
• Features programmable limit registers with an open-drain alert output for hardware-based monitoring.
• Utilizes automatic shutdown between conversions to minimize power consumption during idle periods.

Applications

• Battery-powered portable instrumentation requiring low power consumption
• Industrial process control systems utilizing I2C connectivity
• Data acquisition modules for environmental monitoring

Procurement Notes

Verify the specific suffix designation against official documentation to confirm interface mode capabilities. Ensure that the ordering information matches the required I2C speed specifications and address configurations. Cross-reference the package type and temperature grade with system requirements before finalizing procurement decisions.

Selection Notes

Select this component when eight single-ended analog inputs are required alongside precise 12-bit resolution. The -1 suffix indicates support for high-speed I2C modes, which is necessary for maximizing throughput rates above standard limits. Consider the external reference voltage range and available board space for the 20-lead TSSOP footprint during the design phase.

Part Context

This device belongs to the AD7997/AD7998 family of low-power ADCs. The AD7998 variant specifically provides 12-bit resolution, whereas the AD7997 offers 10-bit resolution. Both share similar architectural features but differ in accuracy specifications. Equivalent devices with fewer channels include the AD7992 and AD7994.

Replacement Considerations

Direct substitutes include the AD7998BRUZ-0, which supports only standard and fast I2C modes without high-speed capability. For lower resolution needs, the AD7997 series serves as a compatible alternative within the same product family.