AD7862ARS-2REEL

Overview

The AD7862ARS-2REEL is a dual 12-bit successive approximation analog-to-digital converter (ADC) from Analog Devices, housed in a 28-lead Shrink Small Outline Package (SSOP). It features two simultaneous sampling channels with four single-ended analog inputs. The device operates on a single +5 V supply and includes an internal +2.5 V reference. It supports an input voltage range of 0 V to +2.5 V with a throughput rate of 250 kSPS. Key electrical parameters include a typical signal-to-noise ratio of 70 dB, ±1 LSB relative accuracy, and 60 mW typical power dissipation.

Feature Summary

• Simultaneous sampling architecture preserves phase relationships between input signals
• Integrated track/hold amplifiers ensure accurate conversion at high speeds
• Internal reference reduces external component requirements
• Overvoltage protection safeguards analog inputs against damage

Applications

• AC motor control systems
• Uninterrupted power supplies
• Data acquisition systems
• Communications equipment

Procurement Notes

Verify the specific suffix 'REEL' indicates tape-and-reel packaging when sourcing components. Confirm that the '-2' designation matches the required 0 V to +2.5 V unipolar input range for your application. Ensure the SSOP package dimensions align with your PCB footprint constraints before finalizing procurement orders.

Selection Notes

Select this model specifically for applications requiring a 0 V to +2.5 V input range. Choose alternative versions like AD7862-10 or AD7862-3 if bipolar ±10 V or ±2.5 V ranges are needed. Consider the AD7863 if a 14-bit resolution upgrade is required while maintaining pin compatibility.

Part Context

This component belongs to the AD7862 family of dual 12-bit ADCs. It shares architectural similarities with the AD7863 but offers lower resolution. The device is designed for low-power, high-speed data acquisition tasks where simultaneous channel sampling is critical for maintaining signal integrity.

Replacement Considerations

Direct pin-compatible replacements within the same family include AD7862AR-2 and AD7862BR-2. For higher resolution needs, the AD7863 series serves as a 14-bit upgrade option.