AD2S44TM14B

Overview

The AD2S44TM14B is a low-cost, 14-bit dual-channel synchro/resolver-to-digital converter housed in a 32-lead DIL hybrid package. It features independent Type II servo loop tracking converters with 2.6 arc minute accuracy over the −25°C to +85°C range and ±4.0 arc minutes from −55°C to +125°C. The device supports signal voltages of 90 V or 11.8 V rms and reference inputs of 26 V or 115 V rms. Operating on a continuous tracking principle, it provides parallel natural binary output via three-state latches, enabling data reading without interrupting conversion.

Feature Summary

• Dual-channel architecture with independent reference inputs for each channel
• High tracking rate of 20 revolutions per second
• Built-in test (BIT) facility for fault detection and failsafe indication
• Ratiometric conversion technique providing noise immunity and tolerance of long lead lengths

Applications

• Gimbal and gyro control systems
• Military servo control systems
• Avionic systems
• CNC machine tooling
• Fire control systems

Procurement Notes

Verify the specific voltage configuration suffix (Z code) required for the application, as options include 90V/115V synchro or 11.8V/26V resolver formats. Confirm that the high-reliability B suffix processing meets environmental screening standards. Check current availability status as this component may be subject to obsolescence or limited supply chains.

Selection Notes

Select the AD2S44TM14B when space, weight, and cost are critical constraints for dual-axis position sensing. Ensure the system requires continuous tracking rather than single-shot conversion. Verify that the ±15 V power supply rails and parallel digital interface compatibility align with the host controller design.

Part Context

This component belongs to the AD2S44 family of synchro/resolver-to-digital converters manufactured by Analog Devices. It utilizes proprietary BiMOS II process technology to combine CMOS digital logic with bipolar linear circuits, ensuring high reliability and low internal component count within a hermetically sealed hybrid package.

Replacement Considerations

Public confirmed substitute part numbers: None.