Datasheet LTC2461, LTC2463 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | Differential Ultra-Tiny, 16-Bit I2C ΔΣ ADCs with 10ppm/°C Max Precision Reference |
| 页数 / 页 | 20 / 1 — FEATURES. DESCRIPTION. 16-Bit Resolution, No Missing Codes. Internal … |
| 文件格式/大小 | PDF / 311 Kb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTION. 16-Bit Resolution, No Missing Codes. Internal Reference, High Accuracy 10ppm/°C (Max)
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LTC2461/LTC2463 Ultra-Tiny, 16-Bit I2C ΔΣ ADCs with 10ppm/°C Max Precision Reference
FEATURES DESCRIPTION
n
16-Bit Resolution, No Missing Codes
The LTC®2461/LTC2463 are ultra tiny, 16-Bit analog-to- n
Internal Reference, High Accuracy 10ppm/°C (Max)
digital converters with an integrated precision reference. n
Single-Ended (LTC2461) or Differential (LTC2463)
They use a single 2.7V to 5.5V supply and communicate n
2LSB Offset Error (Typ)
through an I2C Interface. The LTC2461 is single-ended n
0.01% Gain Error (Typ)
with a 0V to 1.25V input range and the LTC2463 is dif- n
60 Conversions Per Second
ferential with a 1.25V input range. Both ADCs include a n Single Conversion Settling Time for Multiplexed 1.25V integrated reference with 2ppm/°C drift perfor- Applications mance and 0.1% initial accuracy. The converters are n 1.5mA Supply Current available in a 12-pin 3mm × 3mm DFN package or an n 200nA Sleep Current MSOP-12 package. They include an integrated oscillator n Internal Oscillator—No External Components and perform conversions with no latency for multiplexed Required applications. The LTC2461/LTC2463 include a proprietary n 2-Wire I2C Interface with Two Addresses Plus One input sampling scheme that reduces the average input Global Address for Synchronization current several orders of magnitude when compared to n Ultra-Tiny, 12-Lead, 3mm × 3mm DFN and MSOP conventional delta sigma converters. Packages Following a single conversion, the LTC2461/LTC2463
APPLICATIONS
automatically power down the converter and can also be configured to power down the reference. When both the n ADC and reference are powered down, the supply current System Monitoring n is reduced to 200nA. Environmental Monitoring n Direct Temperature Measurements The LTC2461/LTC2463 can sample at 60 conversions per n Instrumentation second and, due to the very large oversampling ratio, n Data Acquisition have extremely relaxed antialiasing requirements. Both n Embedded ADC Upgrades include continuous internal offset and fullscale calibration L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear algorithms which are transparent to the user, ensuring ac- Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6208279, 6411242, 7088280, 7164378. curacy over time and the operating temperature range.
TYPICAL APPLICATION VREF vs Temperature
1.2520 2.7V TO 5.5V 1.2515 0.1µF 0.1µF 0.1µF 10µF 1.2510 TAGE (V) 0.1µF REFOUT COMP V 1.2505 CC IN+ 1.2500 10k 10k SCL I2C LTC2463 INTERFACE 1.2495 IN– SDA 0.1µF 1.2490 10k R REF– A0 GND REFERENCE OUTPUT VOL 1.2485 24613 TA01a 1.2480–50 –30 –10 10 30 50 70 90 TEMPERATURE (°C) 24613 TA01b 24613fa 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Applications Information Package Description Electrical Characteristics Analog Inputs Power Requirements I2c Inputs and Outputs I2c Timing Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Revision History Typical Application Related Parts
FEATURES DESCRIPTION
n
16-Bit Resolution, No Missing Codes
The LTC®2461/LTC2463 are ultra tiny, 16-Bit analog-to- n
Internal Reference, High Accuracy 10ppm/°C (Max)
digital converters with an integrated precision reference. n
Single-Ended (LTC2461) or Differential (LTC2463)
They use a single 2.7V to 5.5V supply and communicate n
2LSB Offset Error (Typ)
through an I2C Interface. The LTC2461 is single-ended n
0.01% Gain Error (Typ)
with a 0V to 1.25V input range and the LTC2463 is dif- n
60 Conversions Per Second
ferential with a 1.25V input range. Both ADCs include a n Single Conversion Settling Time for Multiplexed 1.25V integrated reference with 2ppm/°C drift perfor- Applications mance and 0.1% initial accuracy. The converters are n 1.5mA Supply Current available in a 12-pin 3mm × 3mm DFN package or an n 200nA Sleep Current MSOP-12 package. They include an integrated oscillator n Internal Oscillator—No External Components and perform conversions with no latency for multiplexed Required applications. The LTC2461/LTC2463 include a proprietary n 2-Wire I2C Interface with Two Addresses Plus One input sampling scheme that reduces the average input Global Address for Synchronization current several orders of magnitude when compared to n Ultra-Tiny, 12-Lead, 3mm × 3mm DFN and MSOP conventional delta sigma converters. Packages Following a single conversion, the LTC2461/LTC2463
APPLICATIONS
automatically power down the converter and can also be configured to power down the reference. When both the n ADC and reference are powered down, the supply current System Monitoring n is reduced to 200nA. Environmental Monitoring n Direct Temperature Measurements The LTC2461/LTC2463 can sample at 60 conversions per n Instrumentation second and, due to the very large oversampling ratio, n Data Acquisition have extremely relaxed antialiasing requirements. Both n Embedded ADC Upgrades include continuous internal offset and fullscale calibration L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear algorithms which are transparent to the user, ensuring ac- Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6208279, 6411242, 7088280, 7164378. curacy over time and the operating temperature range.
TYPICAL APPLICATION VREF vs Temperature
1.2520 2.7V TO 5.5V 1.2515 0.1µF 0.1µF 0.1µF 10µF 1.2510 TAGE (V) 0.1µF REFOUT COMP V 1.2505 CC IN+ 1.2500 10k 10k SCL I2C LTC2463 INTERFACE 1.2495 IN– SDA 0.1µF 1.2490 10k R REF– A0 GND REFERENCE OUTPUT VOL 1.2485 24613 TA01a 1.2480–50 –30 –10 10 30 50 70 90 TEMPERATURE (°C) 24613 TA01b 24613fa 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Applications Information Package Description Electrical Characteristics Analog Inputs Power Requirements I2c Inputs and Outputs I2c Timing Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Revision History Typical Application Related Parts