AD7883BR

Overview

The AD7883BR is a 12-bit successive-approximation analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single +3 V to +3.6 V supply and features a throughput rate of 50 kS/s with a conversion time of 15 μs and an acquisition time of 5 μs. The device includes two analog inputs (VINA, VINB) supporting unipolar (0 to VREF) or bipolar (±VREF) ranges via internal attenuator networks. It utilizes a 2 MHz clock input and provides three-state digital outputs. Power consumption is typically 8 mW in normal mode and 1 mW in power-save mode. The component is housed in a 24-lead SOIC package and supports an industrial temperature range of –40 °C to +85 °C.

Feature Summary

• Supports dual analog input configurations for both unipolar and bipolar signal ranges using internal resistor networks.
• Integrates a low-power control circuit allowing operation in standard mode or a deep power-save sleep state.
• Features versatile interface logic with three-state data outputs compatible with microprocessors and DSPs.

Applications

• Battery-powered portable systems
• Laptop computers
• Telecommunications equipment

Procurement Notes

Verify the specific suffix 'BR' corresponds to the 24-lead Small Outline Integrated Circuit (SOIC) package option as defined in the ordering guide. Confirm that the required operating environment falls within the specified industrial temperature range of –40 °C to +85 °C for the B version. Ensure the system design accommodates the single +3 V to +3.6 V supply voltage requirement for guaranteed specifications.

Selection Notes

Select this component when a 12-bit resolution is required with a maximum sampling frequency of 50 kHz. It is suitable for designs constrained by a single 3.3 V supply rail where low power consumption is critical. Consider the 24-lead SOIC footprint during PCB layout planning. Verify that the external clock source can provide the necessary 2 MHz frequency for optimal linearity performance.

Part Context

The AD7883 belongs to the Analog Devices family of high-speed, low-power monolithic A/D converters. It is fabricated using Linear Compatible CMOS (LC2MOS) technology, which combines precision bipolar circuits with low-power CMOS logic. This process enables the integration of a fast-settling DAC, comparator, and SAR architecture into a compact form factor designed for battery-operated applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.