Features and Benefits
- 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
- 2-Wire I2C Interface with Two Addresses Plus One Global Address for Synchronization
- Ultra-Tiny, 12-Lead, 3mm × 3mm DFN and MSOP Packages
The LTC2461/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/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/LTC2463 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 LTC2461/LTC2463 can sample at 60 conversions per second and, due to the very large oversampling ratio, have extremely relaxed antialiasing requirements. Both include continuous internal offset and fullscale calibration algorithms which are transparent to the user, ensuring accuracy over time and the operating temperature range.
- System Monitoring
- Environmental Monitoring
- Direct Temperature Measurements
- Data Acquisition
- Embedded ADC Upgrades
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)
Demonstration circuit 1491A features the LTC2461, a 16 bit high performance ΔΣ analog-to-digital converter (ADC) with an I2C interface. The input is single-ended with a range of 0 to REF. The modulator’s proprietary sampling technique reduces the average input current to less than 50nA–orders of magnitude lower than typical delta sigma ADCs.
Tools & Simulations
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
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.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.