LTC2461 and LTC2463 - Ultra-Tiny ADCs


LTC2461 and LTC2463 - 16-Bit I²C Delta Sigma ADCs with 10ppm/°C max precision reference now available at Digi-Key

Linear Technology LTC2461 and LTC2463 - Ultra-Tiny ADCsLinear Technology's LTC2461 and LTC2463 are ultra tiny, 16-bit analog-to-digital converters with an integrated precision reference. They use a single 2.7V to 5.5V supply and communicate through an I²C interface. The LTC2461 is single-ended with a 0V to 1.25V input range and the LTC2463 is differential with a 1.25V input range. Both ADCs include a 1.25V integrated reference with 2ppm/°C drift performance and 0.1% initial accuracy. The converters are available in a 12-pin 3mm × 3mm DFN package or an MSOP-12 package. They include an integrated oscillator and perform conversions with no latency for multiplexed applications. The LTC2461 and LTC2463 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 LTC2461 and LTC2463 automatically power down the converter and can be configured to power down the reference. When both the ADC and reference are powered down, the supply current is reduced to 200nA.

The LTC2461 and LTC2463 can sample at 60 conversions per second and have extremely relaxed antialiasing requirements due to the very large oversampling ratio. Both include continuous internal offset and full-scale calibration algorithms, which are transparent to the user, ensuring accuracy over time and the operating temperature range.


Digi-Key P/N Manufacturer P/N Description Operating Temperature Package  
LTC2461CDD#PBF-ND LTC2461CDD#PBF IC ADC 16BIT DELTA SIG 12-DFN 0°C to 70°C 12-DFN Datasheet
LTC2461IDD#PBF-ND LTC2461IDD#PBF IC ADC 16BIT DELTA SIG 12-DFN -40°C to 85°C 12-DFN Datasheet
LTC2461CMS#PBF-ND LTC2461CMS#PBF IC ADC 16BIT DELTA SIG 12-MSOP 0°C to 70°C 12-MSOP Datasheet
LTC2461IMS#PBF-ND LTC2461IMS#PBF IC ADC 16BIT DELTA SIG 12-MSOP -40°C to 85°C 12-MSOP Datasheet
LTC2463CDD#PBF-ND LTC2463CDD#PBF IC ADC 16BIT DELTA SIG 12-DFN 0°C to 70°C 12-DFN Datasheet
LTC2463IDD#PBF-ND LTC2463IDD#PBF IC ADC 16BIT DELTA SIG 12-DFN -40°C to 85°C 12-DFN Datasheet
LTC2463CMS#PBF-ND LTC2463CMS#PBF IC ADC 16BIT DELTA SIG 12-MSOP 0°C to 70°C 12-MSOP Datasheet
LTC2463IMS#PBF-ND LTC2463IMS#PBF IC ADC 16BIT DELTA SIG 12-MSOP -40°C to 85°C 12-MSOP Datasheet

Features

  • 16-bit resolution, no missing codes
  • Internal reference, high accuracy 10ppm/°C (Max)
  • Single-ended (LTC2461) or differential (LTC2463)
  • 2LSB offset error (Typ)
  • 0.01% gain error (Typ)
  • 60 conversions per second
  • Single conversion settling time for multiplexed applications
  • 1.5mA supply current
  • 200nA sleep current
  • Internal oscillator – no external components required
  • Ultra-tiny, 12-lead, 3mm × 3mm DFN and MSOP packages
  • 2-Wire I²C interface with two addresses plus one global address for synchronization
 

Applications

  • System monitoring
  • Environmental monitoring
  • Direct temperature measurements
  • Instrumentation
  • Data acquisition
  • Embedded ADC upgrades