ADADC71KD

Analog To Digital Converters (ADC) Overview

The ADADC71KD is a high-resolution 16-bit hybrid analog-to-digital converter featuring an integrated reference, clock, and laser-trimmed thin-film components. It operates with ±15 V analog supplies and a +5 V digital supply, consuming 645 mW typically. The device provides parallel TTL-compatible outputs and supports input ranges including ±2.5 V, ±5 V, ±10 V, 0 to +5 V, 0 to +10 V, and 0 to +20 V. Maximum linearity error is ±0.003% of FSR, with conversion times of 35 μs typical (50 μs max) for 14-bit resolution. It guarantees no missing codes up to 14 bits within the 0°C to +70°C operating temperature range.

Analog To Digital Converters (ADC) Feature Summary

• High-precision 16-bit resolution utilizing proprietary monolithic DAC chips and laser-trimmed thin-film resistors for excellent stability.
• Integrated internal reference voltage and clock generation capabilities reduce external component count.
• Flexible input scaling allows direct connection to various bipolar and unipolar voltage ranges.
• Short cycle capability enables reduced conversion times for applications requiring lower than 16-bit resolution.

Analog To Digital Converters (ADC) Applications

• Medical and analytic instrumentation
• Precision measurement for industrial robots
• Automatic test equipment
• Multi-channel data acquisition systems
• Servo-control systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix KD against the ordering guide to confirm the ±0.003% linearity specification and commercial temperature range. Ensure the procurement source is authorized, as this is a legacy hybrid ceramic DIP component. Confirm package integrity upon receipt, as hermetic seals are critical for long-term reliability in precision applications.

Analog To Digital Converters (ADC) Selection Notes

Select the ADADC71KD when strict linearity requirements below ±0.003% FSR are necessary. Compare against the JD grade if higher tolerance is acceptable. Consider the short cycle feature if faster throughput is needed at reduced bit resolutions. Evaluate power supply constraints due to the requirement for dual ±15 V rails alongside the +5 V logic supply.

Analog To Digital Converters (ADC) Part Context

The ADADC71 series represents a high-performance hybrid ADC solution from Analog Devices, designed for applications demanding superior accuracy and stability. The KD variant specifically targets environments requiring tighter linearity specifications compared to the standard JD grade. Its design leverages monolithic DAC technology to minimize drift and ensure monotonic behavior across the specified temperature range.

Analog To Digital Converters (ADC) Replacement Considerations

No direct public substitute part numbers are documented for the ADADC71KD. Designers should evaluate modern SAR or Sigma-Delta ADCs that offer comparable resolution and interface compatibility, noting differences in packaging and supply voltage requirements.

Analog To Digital Converters (ADC) FAQ

How is complementary two's complement coding achieved?

Complementary two's complement (CTC) coding is obtained by using an inverter to complement the most significant bit (Pin 1).

What is the maximum conversion time for 14-bit resolution?

The maximum conversion time for 14-bit resolution is 50 μs.

Can the ADADC71 operate with an external clock?

Yes, an external clock can be used to control slower conversion times by applying narrow negative-going pulses to the START CONVERT input.