Features and Benefits
- Pin Compatible 4-/8-Channel 24-Bit ADCs
- Single Conversion Digital Filter Settling Time Simplifies Multiplexing
- 4ppm INL, No Missing Codes
- 4ppm Full-Scale Error
- 0.5ppm Offset
- 0.3ppm Noise
- Internal Oscillator—No External Components Required
- 110dB Min, 50Hz/60Hz Notch Filter
- Reference Input Voltage: 0.1V to VCC
- Live Zero—Extended Input Range Accommodates 12.5% Overrange and Underrange
- Single Supply 2.7V to 5.5V Operation
- Low Supply Current (200µA) and Auto Shutdown
The LTC2404/LTC2408 are 4-/8-channel 2.7V to 5.5V micropower 24-bit A/D converters with an integrated oscillator, 4ppm INL and 0.3ppm RMS noise. They use delta-sigma technology and provide single cycle digital filter settling time (no latency delay) for multiplexed applications. The first conversion after the channel is changed is always valid. Through a single pin the LTC2404/LTC2408 can be configured for better than 110dB rejection at 50Hz or 60Hz ±2%, or can be driven by an external oscillator for a user defined rejection frequency in the range 1Hz to 120Hz. The internal oscillator requires no external frequency setting components.
The converters accept any external reference voltage from 0.1V to VCC. With their extended input conversion range of –12.5% VREF to 112.5% VREF the LTC2404/LTC2408 smoothly resolve the offset and overrange problems of preceding sensors or signal conditioning circuits.
The LTC2404/LTC2408 communicate through a flexible 4-wire digital interface which is compatible with SPI and MICROWIRE™ protocols.
- Weight Scales
- Direct Temperature Measurement
- Gas Analyzers
- Strain-Gage Transducers
- Data Acquisition
- Industrial Process Control
- 6-Digit DVMs
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
R411 Reliability Data3/22/2018
DC273A - Demo Manual5/28/2013
No Latency Delta-Sigma™ ADCs5/30/2014
1- and 2-Channel, No Latency ∆Σ, 24-Bit ADCs Easily Digitize a Variety of Sensors2/1/2000 LT Journal
An 8-Channel, High-Accuracy, No Latency ∆Σ 24-Bit ADC9/1/1999 LT Journal
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.