LTC2431
PRODUCTION20-Bit No Latency ∆Σ™ ADCs with Differential Input and Differential Reference
- Part Models
- 4
- 1ku List Price
- Starting From $4.87
Part Details
- Low Supply Current (200µA in Conversion Mode and 4µA in Autosleep Mode)
- Differential Input and Differential Reference with GND to VCC Common Mode Range
- 3ppm INL, No Missing Codes
- 10ppm Full-Scale Error and 1ppm Offset
- 0.56ppm Noise, 20.8 ENOBs
- No Latency: Digital Filter Settles in a Single Cycle. Each Conversion Is Accurate, Even After an Input Step
- Single Supply 2.7V to 5.5V Operation
- Internal Oscillator—No External Components Required
- 110dB Min, 50Hz/60Hz Notch Filter
- Pin Compatible with 24-Bit LTC2410/LTC2411
The LTC2430/LTC2431 are 2.7V to 5.5V micropower 20-bit differential ∆Σ analog-to-digital converters with an integrated oscillator, 3ppm INL and 0.56ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2430/LTC2431 can be configured for better than 110dB differential mode rejection at 50Hz or 60Hz ±2%, or they can be driven by an external oscillator for a user-defined rejection frequency. The internal oscillator requires no external frequency setting components.
The converters accept any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement configurations. The fullscale differential input range is from –0.5VREF to 0.5VREF. The reference common mode voltage, VREFCM, and the input common mode voltage, VINCM, may be independently set anywhere within GND to VCC. The DC common mode input rejection is better than 120dB.
The LTC2430/LTC2431 communicate through a flexible 3-wire digital interface that is compatible with SPI and MICROWIRE™ protocols.
Applications
- Direct Sensor Digitizer
- Weight Scales
- Direct Temperature Measurement
- Gas Analyzers
- Strain Gauge Transducers
- Instrumentation
- Data Acquisition
- Industrial Process Control
- DVMs and Meters
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Application Note 2
Technical Articles 1
Product Selector Card 1
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC2431CMS#PBF | 10-Lead MSOP | ||
| LTC2431CMS#TRPBF | 10-Lead MSOP | ||
| LTC2431IMS#PBF | 10-Lead MSOP | ||
| LTC2431IMS#TRPBF | 10-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only) |
||
| LTC2431CMS#PBF | PRODUCTION | |
| LTC2431CMS#TRPBF | PRODUCTION | |
| LTC2431IMS#PBF | PRODUCTION | |
| LTC2431IMS#TRPBF | PRODUCTION | |
|
Jun 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3) |
||
| LTC2431CMS#PBF | PRODUCTION | |
| LTC2431CMS#TRPBF | PRODUCTION | |
| LTC2431IMS#PBF | PRODUCTION | |
| LTC2431IMS#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC2431CMS#PBF | PRODUCTION | |
| LTC2431CMS#TRPBF | PRODUCTION | |
| LTC2431IMS#PBF | PRODUCTION | |
| LTC2431IMS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| I²C Isolators 1 | ||
| LTM2883 | PRODUCTION | SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power |
| Precision Resistor Network 1 | ||
| LT5400 | RECOMMENDED FOR NEW DESIGNS | Quad Matched Resistor Network |
| TimerBlox 1 | ||
| LTC6991 | PRODUCTION | TimerBlox: Resettable, Low Frequency Oscillator |
Evaluation Kits
LTC2431CMS | 20-Bit Differential ADC in MS10 Package (Requires DC590)
Resources
Latest Discussions
No discussions on ltc2431 yet. Have something to say?
Start a Discussion on EngineerZone®