AD7865BSZ-1REEL

Overview

The AD7865BSZ-1REEL is a four-channel, simultaneous sampling, fast, 14-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single +5 V supply and features a successive approximation architecture with a conversion time of 2.4 µs per channel. The device includes four track/hold amplifiers, an internal 2.5 V reference, and a high-speed parallel interface compatible with 3 V processors. It supports input ranges of ±10 V and ±5 V, with overvoltage protection on analog inputs. Maximum throughput is 350 kSPS for a single channel and 100 kSPS for all four channels.

Feature Summary

• Four simultaneously sampled inputs preserve relative phase information across channels
• Hardware or software selectable channel sequence allows conversion of any subset of the four channels
• High-speed parallel interface facilitates direct connection to microprocessors and DSPs
• Low power consumption with a dedicated standby mode for energy savings

Applications

• AC motor control systems
• Uninterruptible power supplies
• Industrial power meters and monitors
• Data acquisition systems
• Communications equipment

Procurement Notes

Verify that the ordering suffix REEL indicates tape-and-reel packaging rather than tray packaging when sourcing components. Confirm the B version accuracy specifications match the design requirements. Ensure the -1 suffix corresponds to the correct bipolar input voltage range for the specific application circuit.

Selection Notes

Select this component when simultaneous sampling of four channels is required to maintain signal phase relationships. Choose the -1 variant specifically for applications requiring standard industrial bipolar input ranges of ±10 V or ±5 V. Consider the parallel interface requirements and ensure the host system can accommodate the 14-bit data bus width and timing constraints.

Part Context

This part belongs to the AD7865 family of four-channel simultaneous sampling ADCs. The BSZ designation indicates a plastic lead quad flatpack package with RoHS compliance. The -1 suffix specifies the bipolar input range capability, distinguishing it from unipolar or other bipolar variants within the same series.

Replacement Considerations

Direct replacements include AD7865ASZ-1REEL and AD7865YSZ-1REEL. These variants share the same pinout and functionality but differ in temperature range and accuracy specifications. Verify thermal performance and linearity requirements before substituting.