AD7892BN-3

Overview

The AD7892BN-3 is a high-speed, low-power 12-bit analog-to-digital converter (ADC) fabricated in Analog Devices' LC2MOS process. 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 internal +2.5 V reference and accepts a bipolar ±2.5 V analog input range. It includes overvoltage protection allowing inputs up to ±7 V without damage. The component provides both parallel and serial interface options for microprocessor connectivity and is housed in a 24-lead plastic DIP package.

Feature Summary

• Integrated signal scaling, track/hold amplifier, and versatile interface logic on a single chip
• Flexible data output formats supporting direct connection to microprocessors via parallel or serial ports
• Built-in overvoltage protection on analog inputs to prevent port damage during voltage excursions

Applications

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

Procurement Notes

Verify the specific suffix 'N' confirms the 24-lead plastic DIP package configuration. Ensure the '-3' designation matches the required ±2.5 V input range and 600 kSPS speed grade. Confirm RoHS compliance status if environmental regulations apply to the target assembly. Cross-reference the manufacturer part number against current distributor catalogs to validate availability and revision levels before finalizing procurement orders.

Selection Notes

Select this model when a single +5 V supply operation is required alongside a ±2.5 V input range. The 600 kSPS throughput rate distinguishes it from the slower AD7892-1 and AD7892-2 variants. Consider the 24-lead PDIP package for through-hole mounting requirements. Verify that the internal reference tolerance meets system accuracy needs or plan for external reference integration if tighter specifications are necessary.

Part Context

This component belongs to the AD7892 family of single-supply ADCs. It shares the core LC2MOS architecture and functional block diagram with other variants but differs in input range and speed. The 'B' version indicates ±1 LSB relative accuracy, while the 'N' suffix specifies the plastic DIP package type. It serves as a specialized data converter within the broader Analog Devices portfolio.

Replacement Considerations

AD7892AN-3 offers identical electrical performance in a standard accuracy grade. AD7892BR-3 provides the same functionality in a surface-mount SOIC package. Substitutes must match the 600 kSPS throughput and ±2.5 V input range constraints.