AD1376KD

Overview

The AD1376KD is a complete, high-speed 16-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It integrates an internal reference, clock, and laser-trimmed thin-film scaling resistors within a hermetic 32-lead ceramic dual in-line package (DIP). The device offers a maximum linearity error of ±0.003% at 25°C and guarantees no missing codes up to 14 bits over the commercial temperature range of 0°C to 70°C. Conversion time for full 16-bit resolution is typically 17 µs. It supports parallel digital outputs with TTL-compatible logic levels and provides adjustable bipolar input ranges of ±2.5 V, ±5 V, and ±10 V, as well as unipolar ranges of 0 V to +5 V, 0 V to +10 V, and 0 V to +20 V.

Feature Summary

• 16-bit resolution with ±0.003% maximum nonlinearity error at 25°C
• Integrated internal voltage reference and clock generator
• Laser-trimmed thin-film resistors for precise input scaling
• Hermetic 32-lead ceramic DIP packaging (DH-32E)
• No missing codes guaranteed to 14 bits over 0°C to 70°C

Applications

• Medical and analytical instrumentation
• Precision measurement for industrial robotics
• Automatic test equipment (ATE)
• Multichannel data acquisition systems
• Servo control systems requiring wide dynamic range

Procurement Notes

Verify the specific suffix KD indicates the commercial temperature grade (0°C to 70°C) and tighter linearity specification compared to the JD variant. Confirm the package option DH-32E corresponds to the 32-lead bottom-brazed ceramic DIP. Ensure compatibility with existing ±15 V analog and +5 V digital supply rails during integration.

Selection Notes

Select the AD1376KD when a conversion time of 17 µs is acceptable and higher accuracy is required compared to the AD1377 series. The device requires external gain and zero offset adjustments using potentiometers connected to Pins 29 and 27 respectively. Designers must account for separate analog and digital ground connections (Pins 22 and 19) which must be tied externally at a single point near the converter.

Part Context

The AD1376KD belongs to the AD1376/AD1377 family of monolithic 16-bit successive approximation register (SAR) ADCs. It shares the same pinout and functional architecture as the AD1377 but features a slower internal clock speed resulting in a longer 17 µs conversion time versus the AD1377's 10 µs. Both variants utilize identical 32-lead ceramic DIP packages and support short-cycle operation for reduced resolution applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.