LTC2472
Selectable 208sps/833sps, 16-Bit ΔΣ ADCs with 10ppm/°C Max Precision Reference
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Overview
Features and Benefits
- 16-Bit Resolution
- Internal, High Accuracy Reference—10ppm/°C (Max)
- Single-Ended (LTC2470) or Differential (LTC2472)
- Selectable 208sps/833sps Output Rate
- 1mV Offset Error
- 0.01% Gain Error
- Single Conversion Settling Time for Multiplexed Applications
- Single-Cycle Operation with Auto Shutdown
- 3.5mA (Typ) Supply Current
- 2μA (Max) Sleep Current
- Internal Oscillator—No External Components Required
- SPI Interface
- Small 12-Lead, 3mm × 3mm DFN and MSOP Packages
Product Details
The LTC2470/LTC2472 are small, 16-bit analog-to-digital converters with an integrated precision reference and a selectable 208sps or 833sps output rate. They use a single 2.7V to 5.5V supply and communicate through a SPI Interface. The LTC2470 is single-ended with a 0V to VREF input range and the LTC2472 is differential with a ±VREF input range. Both ADC’s include a 1.25V integrated reference with 2ppm/°C drift performance and 0.1% initial accuracy. The converters are available in a 12-pin DFN 3mm × 3mm package or an MSOP-12 package. They include an integrated oscillator and perform conversions with no latency for multiplexed applications. The LTC2470/ LTC2472 include a proprietary input sampling scheme that reduces the average input current several orders of magnitude when compared to conventional delta sigma converters.
Following a single conversion, the LTC2470/LTC2472 automatically power down the converter and can also be configured to power down the reference. When both the ADC and reference are powered down, the supply current is reduced to 200nA.
The LTC2470/LTC2472 include a user selectable 208sps or 833sps output rate and due to a large oversampling ratio (8,192 at 208sps and 2,048 at 833sps) have relaxed anti-aliasing requirements.
Applications
- System Monitoring
- Environmental Monitoring
- Direct Temperature Measurements
- Instrumentation
- Industrial Process Control
- Data Acquisition
- Embedded ADC Upgrades
Product Categories
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
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R461 Reliability Data3/22/2018PDF31 K
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DC1629A - Demo Manual4/21/2011PDF276K
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No Latency Delta-Sigma™ ADCs5/30/2014PDF640K
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Ultra-Tiny 16-Bit ΔΣ ADC Family6/29/2010PDF454K
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC2472CDD#PBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2472CDD#TRPBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2472CMS#PBF | Material Declaration | Reliability Data | 12-Lead MSOP | |
| LTC2472CMS#TRPBF | Material Declaration | Reliability Data | 12-Lead MSOP | |
| LTC2472IDD#PBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2472IDD#TRPBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2472IMS#PBF | Material Declaration | Reliability Data | 12-Lead MSOP | |
| LTC2472IMS#TRPBF | Material Declaration | Reliability Data | 12-Lead MSOP | |
| Wafer Fabrication Data | R461 Reliability Data |
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Support & Discussions
LTC2472 Discussions
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Evaluation Boards
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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.