LINEAR Technology LTC2404 LTC2408 Data Sheet Manual
Summary
These ultra-low power, high-resolution Analog-to-Digital Converters (ADCs) are designed for demanding data acquisition applications requiring maximum precision and minimal latency. Featuring 4 or 8 channels and 24-bit accuracy, they utilize advanced delta-sigma technology with no missing codes and integrated digital filtering to resolve common signal offset issues. The comprehensive manual details specifications for various communication protocols (SPI, MICROWIRE), single supply operation (2.7V to 5.5V), and customizable inputs, making them ideal for instrumentation designers working on industrial control, gas analysis, and precision measurement systems.
Page 1 Text Content
LTC2404/LTC2408
4-/8-Channel 24-Bit µPower No Latency ∆ΣTM ADCs
FEATURES DESCRIPTIO
Pin Compatible 4-/8-Channel 24-Bit ADCs The LTC®2404/LTC2408 are 4-/8-channel 2.7V to 5.5V
Single Conversion Digital Filter Settling Time micropower 24-bit A/D converters with an integrated
Simplifies Multiplexing oscillator, 4ppm INL and 0.3ppm RMS noise. They use 4ppm INL, No Missing Codes delta-sigma technology and provide single cycle digital 4ppm Full-Scale Error filter settling time (no latency delay) for multiplexed 0.5ppm Offset applications. The first conversion after the channel is 0.3ppm Noise changed is always valid. Through a single pin the LTC2404/ Internal Oscillator—No External Components LTC2408 can be configured for better than 110d B rejec- Required tion at 50Hz or 60Hz ±2%, or can be driven by an external 110d B Min, 50Hz/60Hz Notch Filter oscillator for a user defined rejection frequency in the Reference Input Voltage: 0.1V to VCC range 1Hz to 120Hz. The internal oscillator requires no Live Zero—Extended Input Range Accommodates external frequency setting components.
12.5% Overrange and Underrange
The converters accept any external reference voltage from
Single Supply 2.7V to 5.5V Operation
0.1V to VCC. With their extended input conversion range of
Low Supply Current (200µA) and Auto Shutdown
–12.5% VREF to 112.5% VREF the LTC2404/LTC2408 smoothly resolve the offset and overrange problems of
APPLICATIO S
preceding sensors or signal conditioning circuits.
Weight Scales LI NE AR IT ER RO (p pm The LTC2404/LTC2408 communicate through a flexible
Direct Temperature Measurement 4-wire digital interface which is compatible with SPI and Gas Analyzers MICROWIRETM protocols. Strain-Gage Transducers , LTC and LT are registered trademarks of Linear Technology Corporation.
No Latency ∆Σ is a trademark of Linear Technology Corporation.
Instrumentation
MICROWIRE is a trademark of National Semiconductor Corporation.
Data Acquisition Industrial Process Control 6-Digit DVMs
TYPICAL APPLICATIO
Total Unadjusted Error vs Output Code
0.1V TO VCC 2.7V TO 5.5V
VDD = 5V
1µF VREF = 5V
ADCINMUXOUT VREF VCC TA = 25°C
SERIAL DATA LINK FO = LOW
MICROWIRE AND
CH1 CSADC
SPI COMPATABLE
CH2 CSMUX
ANALOG CH3
24-BIT SCK
INPUTS 4-/8-CHANNEL
CH4* ∆∑ ADC
–0.12VREF TO MUX CLK MPU –2
1.12VREF CH5* DIN
CH6* SDO
CH7* VCC
LTC2404/LTC2408
= INTERNAL OSC/50Hz REJECTION –8
= EXTERNAL CLOCK SOURCE
GND FO
= INTERNAL OSC/60Hz REJECTION
2404/08 TA01 8,338,608 16,777,215
OUTPUT CODE (DECIMAL)
*THESE PINS ARE NO CONNECTS ON THE LTC2404 2404/08 TA02
Page Summary Contents For LINEAR Technology LTC2404 LTC2408 Data Sheet Manual
Manual Details
| Brand | Linear |
|---|---|
| Pages | 37 |
| File Size | 362.87 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What is the required single supply voltage range for operation?
The converters operate on a single supply of 2.7V to 5.5V.
Are there any latency issues or data delays after a conversion cycle?
No, it uses No Latency DS technology, meaning the first converted reading is always valid immediately.
Which communication protocols are supported for data acquisition?
It communicates through a flexible digital interface compatible with SPI and MICROWIRE protocols.
What is the operating temperature range difference between variants I and C?
The 'I' versions operate from -40°C to 85°C, while the 'C' versions are rated from 0°C to 70°C.