AD2S44TM13B

Overview

The AD2S44TM13B is a low-cost, 14-bit dual-channel synchro/resolver-to-digital converter (RDC) housed in a 32-lead bottom-brazed ceramic DIP hybrid package. It features independent Type II servo loop tracking converters for each channel, utilizing ratiometric conversion for noise immunity. The device operates with ±15 V power supplies and supports signal frequencies from 400 Hz to 2600 Hz. Key specifications include a typical accuracy of ±4.0 arc minutes over the -55°C to +125°C temperature range, a maximum tracking rate of 20 revolutions per second, and a built-in test facility for fault detection.

Feature Summary

• Dual-channel architecture with independent reference inputs and shared digital outputs
• 14-bit resolution with parallel natural binary output via three-state latches
• Built-in test (BIT) output indicating errors exceeding approximately one angular degree
• High reliability processing including temperature cycling and burn-in screening

Applications

• Gimbal and gyro control systems
• Military servo control and fire control systems
• Avionic systems and antenna monitoring
• Robotics and CNC machine tooling

Procurement Notes

Verify the specific voltage configuration suffix (Z code) required for the application, as options exist for 90V/115V synchro or various resolver voltages. Confirm that the high-reliability B suffix processing meets the environmental screening standards necessary for the target deployment environment.

Selection Notes

Select this component when space, weight, and cost are critical constraints requiring dual-channel conversion. Ensure the system can provide ±15 V supplies and that the input signal frequency falls within the 400 Hz to 2600 Hz range. Consider the acceleration constant of 62,000 sec⁻² when evaluating dynamic performance under high acceleration conditions.

Part Context

The AD2S44 series utilizes Analog Devices' proprietary BiMOS II process, combining CMOS digital logic with bipolar linear circuits to minimize internal component count and enhance reliability. It serves as a specialized data acquisition solution for converting continuous shaft position data into digital words without external command loops.

Replacement Considerations

Public confirmed substitute part numbers: None.