AD7862ARS-10REEL

Overview

The AD7862ARS-10REEL is a dual 12-bit successive approximation analog-to-digital converter (ADC) fabricated in the Linear Compatible CMOS process. It features two simultaneous sampling channels with four single-ended analog inputs, grouped into Channel A and Channel B. The device operates from a single +5 V supply, consuming typically 60 mW in normal mode and 50 mW in power-saving mode. It provides an input voltage range of ±10 V with overvoltage protection up to ±17 V. Key electrical parameters include a maximum conversion time of 3.6 μs, a throughput rate of 250 kSPS, and a signal-to-noise ratio of 70 dB minimum at 25°C. The part is housed in a 28-lead Shrink Small Outline Package (SSOP).

Feature Summary

• Simultaneous sampling and conversion of two independent channels preserves relative phase information between input signals.
• Integrated internal +2.5 V reference eliminates the need for external precision voltage sources in standard applications.
• High-speed parallel interface allows direct connection to microprocessors, microcontrollers, and DSPs.
• Automatic power-down mode reduces power consumption significantly after each conversion cycle.

Applications

• AC motor control systems requiring precise phase tracking.
• Uninterrupted power supplies (UPS) monitoring and control.
• Data acquisition systems needing multi-channel synchronization.
• Communications equipment signal processing.

Procurement Notes

Verify that the ordering suffix 'REEL' corresponds to tape-and-reel packaging rather than tube packaging when reviewing distributor listings. Confirm the 'ARS' designation indicates the Shrink Small Outline Package (SSOP) variant. Ensure the '-10' suffix matches the required ±10 V input range specification for your application design.

Selection Notes

Select this component if simultaneous sampling of two channels is required to maintain phase coherence. Choose the '-10' version specifically for bipolar ±10 V input ranges. Consider the SSOP package only if board space constraints necessitate the shrink outline form factor. Verify that the system can accommodate the 250 kSPS throughput rate and parallel data bus timing requirements.

Part Context

This device belongs to the AD7862 family of dual 12-bit ADCs. It is pin-compatible with the AD7863, which offers a 14-bit resolution upgrade. The 'ARS' suffix denotes the Shrink Small Outline Package, while the '-10' suffix specifies the ±10 V input range capability. The 'REEL' suffix indicates bulk tape-and-reel packaging for automated assembly.

Replacement Considerations

The AD7863 serves as a 14-bit pin-compatible upgrade within the same family. Other variants like AD7862AR-10 or AD7862BR-10 offer identical functionality but differ in package type (SOIC vs. SSOP) or temperature grade.