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LINEAR AN80-1 Product Specification Sheet

Summary

Discover the LTC2400, a market-leading 24-bit Delta-Sigma Analog-to-Digital Converter designed for ultimate measurement precision. This technical manual provides comprehensive details on utilizing its no-latency architecture, highlighting features like superior 50/60Hz line frequency rejection and ultra-low noise performance. It is essential reading for electrical and instrumentation engineers developing high-accuracy applications, including DC voltage sensing, gas analysis, dedicated temperature monitoring, and professional data acquisition systems requiring stable results in challenging industrial environments.

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Application Note 80

July 1999

How to Use the World’s Smallest 24-Bit No Latency Delta-Sigma TM ADC to its Fullest Potential Frequently Asked Questions About Delta-Sigma ADCs and the LTC2400 By Michael K. Mayes

Linear Technology’s LTC®2400 is the world’s first 24-bit Latency ∆ΣTM, architecture. The key topics addressed here ADC in an SO-8 Package. An innovative new delta-sigma include speed, noise, PGAs, line frequency, rejection, architecture has been developed. The result is a small, input current, multiplexing, analog input range and key highly accurate, simple-to-use delta-sigma ADC. This features differentiating the LTC2400 from other delta- paper was created to educate users on several topics sigma ADCs. associated with delta-sigma converters and to dispel

, LTC and LT are registered trademarks of Linear Technology Corporation.

confusion associated with this new one-shot, or No No Latency Delta-Sigma and No Latency ∆Σ are trademarks of Linear Technology Corporation.

AN80-1

Page Summary Contents For LINEAR AN80-1 Product Specification Sheet

Page 1 Application Note 80 July 1999 How to Use the World’s Smallest 24-Bit No Latency Delta-Sigma TM ADC to its Fullest Potential Frequently Asked Questions About Delta-Sigma ADCs and the LTC2400 By Michael...
Page 2 Application Note 80 LTC2400 FREQUENTLY ASKED QUESTIONS I. Questions Dealing with Speed 1. I currently use a competitor’s delta sigma running at an Additionally, the competitors’ part does not reject o...
Page 3 Application Note 80 II. Questions Dealing with Noise and PGAs 1. Do I need a PGA with the LTC2400 (the competitive input voltage. The user sees sparkle codes or large noise parts have built-in PGAs)? ...
Page 4 Application Note 80 III. Questions Dealing with Line-Frequency Rejection 1. What is the rejection with 2% variations in line 5. For a 60Hz rejection frequency, what is the rejection at frequency? 120H...
Page 5 Application Note 80 IV. Questions Dealing with Multiplexing 1. Is it possible to put a multiplexer in front of a delta- 2. What is the settling time of the converter? sigma ADC? Competition: Other del...
Page 6 Application Note 80 VI. Questions Dealing with Input Impedance. 1. What does the input impedance look like? The LTC2400 has an internal sampling capacitor of 10p F and a parasitic input resistance of ...
Page 7 Application Note 80 VII. Miscellaneous 1. How does the performance change with supply 4. What are the resolution, linearity and accuracy of the voltage? LTC2400 compared to those of other delta-sigma ...
Page 8 Application Note 80 VII. Key Features Differentiating the LTC2400 from the Competition 1. S0-8 Package—The LTC2400 is the smallest 24-bit 12. Low Full-Scale Drift—The full scale of the LTC2400 ADC on ...

Manual Details

Brand Linear
Pages 8
File Size 78.87 KB
Published June 05, 2026
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Frequently Asked Questions

Does the LTC2400 require external calibration or setup?

No, the LTC2400 performs offset/full-scale calibration transparently to the user, eliminating the need for external calibration.

Can the LTC2400 handle line frequency noise (50Hz/60Hz)?

Yes, it rejects 50Hz/60Hz line frequency noise by 120dB through its integrated anti-aliasing filter.

Is a Programmable Gain Amplifier (PGA) required for use?

No, the LTC2400 uses a third-order modulator and does not require an external PGA.

What are suitable low-noise applications for this ADC?

It is ideal for DC voltage/current measurements, gas analysis, weigh scales, and measuring high DC accuracy signals.