AD7892BRZ-3REEL

Overview

The AD7892BRZ-3REEL is a 12-bit successive approximation analog-to-digital converter (ADC) fabricated in LC2MOS technology. It operates from a single +5 V supply and achieves a throughput rate of 600 kSPS with a conversion time of 1.47 µs. The device features an on-chip track/hold amplifier, an internal +2.5 V reference, and versatile interface structures supporting both parallel and serial connections. It accepts a bipolar analog input range of ±2.5 V and includes overvoltage protection up to ±7 V. The component is housed in a 24-lead SOIC package.

Feature Summary

• Integrated signal scaling allows direct handling of ±2.5 V input signals using a single +5 V supply.
• On-chip track/hold amplifier ensures accurate acquisition for full-scale sine wave inputs at maximum throughput rates.
• Flexible interface logic supports both high-speed parallel and three-wire serial data output modes.
• Built-in overvoltage protection safeguards analog inputs against damage from voltages exceeding the specified range.

Applications

• Portable instrumentation systems requiring low power consumption
• Industrial process control applications utilizing microprocessor interfaces
• Data acquisition systems interfacing with digital signal processors

Procurement Notes

Verify that the specific suffix 'REEL' corresponds to tape-and-reel packaging rather than tube packaging when reviewing distributor listings. Confirm the 'B' version accuracy specifications match the design requirements. Ensure the ordering documentation explicitly identifies the AD7892-3 input range variant to avoid confusion with other throughput or voltage options within the family.

Selection Notes

Select this part when a 600 kSPS sampling rate is required alongside a ±2.5 V input range. The internal +2.5 V reference simplifies design by reducing external component count. Consider the available parallel and serial interface options for compatibility with existing microcontroller architectures. Verify that the single +5 V supply constraint aligns with the system power budget.

Part Context

This component belongs to the AD7892 family of single-supply, 12-bit ADCs. The 'BRZ' designation indicates a commercial temperature range (-40°C to +85°C) and RoHS-compliant plastic SOIC packaging. The '3' suffix specifies the ±2.5 V input range and 600 kSPS speed variant, distinguishing it from the -1 and -2 versions which offer different input ranges and lower throughput rates.

Replacement Considerations

AD7892ARZ-3REEL offers identical electrical performance in an SOIC package. AD7892BN-3 provides equivalent functionality in a DIP package. Cross-reference datasheet timing parameters to ensure interface compatibility during substitution.