Datasheet LTC2460, LTC2462 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | Ultra-Tiny, 16-Bit ΔΣ ADCs with 10ppm/°C Max Precision Reference |
| 页数 / 页 | 22 / 1 — FeaTures. DescripTion. 16-Bit Resolution, No Missing Codes. Internal … |
| 文件格式/大小 | PDF / 317 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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LTC2460/LTC2462 Ultra-Tiny, 16-Bit ΔΣ ADCs with 10ppm/°C Max Precision Reference
FeaTures DescripTion
n
16-Bit Resolution, No Missing Codes
The LTC®2460/LTC2462 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 (LTC2460) or Differential (LTC2462)
They use a single 2.7V to 5.5V supply and communicate n
2LSB Offset Error
through an SPI Interface. The LTC2460 is single-ended n
0.01% Gain Error
with a 0V to VREF input range and the LTC2462 is dif- n
60 Conversions Per Second
ferential with a ±VREF input range. Both ADC’s include n Single Conversion Settling Time for Multiplexed a 1.25V integrated reference with 2ppm/°C drift per- Applications formance and 0.1% initial accuracy. The converters are n Single-Cycle Operation with Auto Shutdown available in a 12-pin DFN 3mm × 3mm package or an n 1.5mA Supply Current MSOP-12 package. They include an integrated oscillator n 2µA (Max) Sleep Current and perform conversions with no latency for multiplexed n Internal Oscillator—No External Components Required applications. The LTC2460/LTC2462 include a proprietary n SPI Interface input sampling scheme that reduces the average input n Ultra-Tiny 12-Lead 3mm × 3mm DFN and MSOP current several orders of magnitude when compared to Packages conventional delta sigma converters.
applicaTions
Following a single conversion, the LTC2460/LTC2462 automatically power down the converter and can also be n System Monitoring configured to power down the reference. When both the n Environmental Monitoring ADC and reference are powered down, the supply current n Direct Temperature Measurements is reduced to 200nA. n Instrumentation n Industrial Process Control The LTC2460/LTC2462 can sample at 60 conversions per n Data Acquisition second, and due to the very large oversampling ratio, n Embedded ADC Upgrades have extremely relaxed antialiasing requirements. Both include continuous internal offset and fullscale calibration L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No Latency ∆∑ is a trademark of Linear Technology Corporation. All other trademarks are the algorithms which are transparent to the user, ensuring property of their respective owners. Protected by U.S. Patents including 6208279, 6411242, 7088280, 7164378. accuracy 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 1.2505 REFOUT COMP VCC IN+ SCK 1.2500 10k 10k SPI LTC2462 SDO INTERFACE 1.2495 IN– CS 0.1µF 1.2490 10k R REF– GND REFERENCE OUTPUT VOL 1.2485 24602 TA01a 1.2480–50 –30 –10 10 30 50 70 90 TEMPERATURE (°C) 24602 TA01b 24602fa 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Analog Inputs Power Requirements Digital Inputs and Digital Outputs Timing Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts
FeaTures DescripTion
n
16-Bit Resolution, No Missing Codes
The LTC®2460/LTC2462 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 (LTC2460) or Differential (LTC2462)
They use a single 2.7V to 5.5V supply and communicate n
2LSB Offset Error
through an SPI Interface. The LTC2460 is single-ended n
0.01% Gain Error
with a 0V to VREF input range and the LTC2462 is dif- n
60 Conversions Per Second
ferential with a ±VREF input range. Both ADC’s include n Single Conversion Settling Time for Multiplexed a 1.25V integrated reference with 2ppm/°C drift per- Applications formance and 0.1% initial accuracy. The converters are n Single-Cycle Operation with Auto Shutdown available in a 12-pin DFN 3mm × 3mm package or an n 1.5mA Supply Current MSOP-12 package. They include an integrated oscillator n 2µA (Max) Sleep Current and perform conversions with no latency for multiplexed n Internal Oscillator—No External Components Required applications. The LTC2460/LTC2462 include a proprietary n SPI Interface input sampling scheme that reduces the average input n Ultra-Tiny 12-Lead 3mm × 3mm DFN and MSOP current several orders of magnitude when compared to Packages conventional delta sigma converters.
applicaTions
Following a single conversion, the LTC2460/LTC2462 automatically power down the converter and can also be n System Monitoring configured to power down the reference. When both the n Environmental Monitoring ADC and reference are powered down, the supply current n Direct Temperature Measurements is reduced to 200nA. n Instrumentation n Industrial Process Control The LTC2460/LTC2462 can sample at 60 conversions per n Data Acquisition second, and due to the very large oversampling ratio, n Embedded ADC Upgrades have extremely relaxed antialiasing requirements. Both include continuous internal offset and fullscale calibration L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No Latency ∆∑ is a trademark of Linear Technology Corporation. All other trademarks are the algorithms which are transparent to the user, ensuring property of their respective owners. Protected by U.S. Patents including 6208279, 6411242, 7088280, 7164378. accuracy 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 1.2505 REFOUT COMP VCC IN+ SCK 1.2500 10k 10k SPI LTC2462 SDO INTERFACE 1.2495 IN– CS 0.1µF 1.2490 10k R REF– GND REFERENCE OUTPUT VOL 1.2485 24602 TA01a 1.2480–50 –30 –10 10 30 50 70 90 TEMPERATURE (°C) 24602 TA01b 24602fa 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Analog Inputs Power Requirements Digital Inputs and Digital Outputs Timing Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts