LTC2400 - 24-Bit µPower No Latency Delta-Sigma ADC in SO-8
Datasheet 
DocumentationDatasheet
Application Note
- AN78 - A Collection of Differential to Single-Ended Signal Conditioning Circuits for Use with the LTC2400, a 24-Bit No Latency Delta Sigma ADC in an SO-8
- AN80 - How to Use the Worlds Smallest 24-Bit No Latency Delta-Sigma ADC to its Fullest Potential
- AN86 - A Standards Lab Grade 20-Bit DAC with 0.1ppm/° Drift: The Dedicated Art of Digitizing One Part Per Million
- AN96 - Delta Sigma ADC Bridge Measurement Techniques
Design Note
Reliability Data
Product Selector Card
LT Journal
- Feb 2000 1- and 2-Channel, No Latency Delta Sigma , 24-Bit ADCs Easily Digitize a Variety of Sensors
- Jun 1999 LTC2400 Differential Bridge Digitizers
- May 2001 No Latency Delta-Sigma ADC Techniques for Optimized Performance
- Nov 1998 World
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Features
- 24-Bit ADC in SO-8 Package
- 4ppm INL, No Missing Codes
- 4ppm Full-Scale Error
- Single Conversion Settling Time
for Multiplexed Applications - 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
Typical Application
Description
The LTC2400 is a 2.7V to 5.5V micropower 24-bit converter with an integrated oscillator, 4ppm INL and 0.3ppm RMS noise. It uses delta-sigma technology and provides single cycle settling time for multiplexed applications. Through a single pin the LTC2400 can be configured for better than 110dB rejection at 50Hz or 60Hz ±2%, or it 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 converter accepts any external reference voltage from 0.1V to VCC. With its extended input conversion range of –12.5% VREF to 112.5% VREF, the LTC2400 smoothly resolves the offset and overrange problems of preceding sensors or signal conditioning circuits. The LTC2400 communicates through a flexible 3-wire digital interface which is compatible with SPI and MICROWIRE protocols.SO-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC2400CS8#PBF | SO | 8 | C | $7.10 | $5.50 |
| LTC2400CS8#TRPBF | SO | 8 | C | $5.56 | |
| LTC2400IS8#PBF | SO | 8 | I | $8.10 | $6.25 |
| LTC2400IS8#TRPBF | SO | 8 | I | $6.31 | |
| LTC2400CS8 | SO | 8 | C | $14.20 | $11.00 |
| LTC2400CS8#TR | SO | 8 | C | $11.12 | |
| LTC2400IS8 | SO | 8 | I | $16.20 | $12.50 |
| LTC2400IS8#TR | SO | 8 | I | $12.62 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC573A | LTC2400CS8 | 24-Bit Delta Sigma ADC (req DC590) | $50.00 |
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC590B | Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards | $50.00 |