AD7892BNZ-2

Overview

The AD7892BNZ-2 is a 12-bit successive approximation analog-to-digital converter (ADC) from Analog Devices, operating on a single +5 V supply. It features an internal track/hold amplifier and a +2.5 V reference. The device supports both parallel and serial interfaces for microprocessor connection. It accepts a unipolar analog input range of 0 V to +2.5 V with a throughput rate of 500 kSPS. Key specifications include a conversion time of 1.6 µs, relative accuracy of ±1 LSB, and differential nonlinearity of ±1 LSB. Power consumption is typically 60 mW in normal operation.

Feature Summary

• Integrated signal scaling and track/hold amplifier for accurate data acquisition
• Flexible interface architecture supporting both high-speed parallel and serial connections
• On-chip precision voltage reference with external override capability
• Low power consumption suitable for portable applications

Applications

• Industrial process control systems requiring single-supply operation
• Portable instrumentation and battery-powered devices
• Data acquisition modules interfacing with microcontrollers or DSPs

Procurement Notes

Verify the specific suffix 'BNZ' against the manufacturer's current ordering guide to confirm package type and temperature range availability. Ensure that the required input voltage range matches the AD7892-2 variant specifications before finalizing procurement orders.

Selection Notes

Select this component when a 12-bit resolution and 500 kSPS sampling rate are required for unipolar signals between 0 V and +2.5 V. Consider the integrated reference and track/hold features to simplify circuit design compared to discrete solutions requiring external components.

Part Context

This part belongs to the AD7892 family of LC2MOS ADCs. The 'B' suffix indicates ±1 LSB relative accuracy, while 'N' denotes a plastic DIP package. The '-2' designation specifies the 0 V to +2.5 V input range configuration within the series.

Replacement Considerations

Direct replacements within the same family include AD7892BRZ-2 for SOIC packaging or AD7892AN-2 for standard accuracy. Verify pin compatibility and input range specifications when substituting.