LTC2470IDD#PBF

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.

Applications

• System Monitoring
• Environmental Monitoring
• Direct Temperature Measurements
• Instrumentation
• Industrial Process Control
• Data Acquisition
• Embedded ADC Upgrades

Key features

• 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