LTC2451
PRODUCTIONUltra-Tiny, 16-Bit ΔΣ ADC with I2C Interface
- Part Models
- 8
- 1ku List Price
- Starting From $1.41
Overview
- GND to VCC Single-Ended Input Range
- 0.02LSB RMS Noise
- 2LSB INL, No Missing Codes
- 1LSB Offset Error
- 4LSB Full-Scale Error
- Programmable 30/60 Conversions per Second
- Single Conversion Settling Time for Multiplexed Applications
- Single-Cycle Operation with Auto Shutdown
- 400μA Supply Current
- 0.2μA Sleep Current
- Internal Oscillator—No External Components Required
- Single Supply, 2.7V to 5.5V Operation
- 2-Wire I2C Interface
- Ultra-Tiny 3mm × 2mm DFN or TSOT-23 Package
The LTC2451 is an ultra-tiny, 16-bit, analog-to-digital converter. The LTC2451 uses a single 2.7V to 5.5V supply, accepts a single-ended analog input voltage and communicates through an I2C interface. The converter is available in an 8-pin, 3mm × 2mm DFN or TSOT-23 package. It includes an integrated oscillator that does not require any external components. It uses a delta-sigma modulator as a converter core and provides single-cycle settling time for multiplexed applications. The LTC2451 includes a proprietary input sampling scheme that reduces the average input sampling current several orders of magnitude lower than conventional ΔΣ converters.
The LTC2451 is capable of up to 60 conversions per second and, due to the very large oversampling ratio, has extremely relaxed antialiasing requirements. In the 30Hz mode, the LTC2451 includes continuous internal offset calibration algorithms which are transparent to the user, ensuring accuracy over time and over the operating temperature range. The converter has external REF+ and REF– pins and the input voltage can range from VREF– to VREF+. If VREF+ = VCC and VREF– = GND, the input voltage can range from GND to VCC.
Following a single conversion, the LTC2451 can automatically enter sleep mode and reduce its power to less than 0.2μA. If the user reads the ADC once per second, the LTC2451 consumes an average of less than 50μW from a 2.7V supply.
Applications
- System Monitoring
- Environmental Monitoring
- Direct Temperature Measurements
- Instrumentation
- Industrial Process Control
- Data Acquisition
- Embedded ADC Upgrades
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Product Selector Card 2
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC2451CDDB#TRMPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC2451CDDB#TRPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC2451CTS8#TRMPBF | 8-Lead SOT-23 | ||
| LTC2451CTS8#TRPBF | 8-Lead SOT-23 | ||
| LTC2451IDDB#TRMPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC2451IDDB#TRPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC2451ITS8#TRMPBF | 8-Lead SOT-23 | ||
| LTC2451ITS8#TRPBF | 8-Lead SOT-23 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
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| Supervisory Circuits & Reset ICs 1 | ||
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| Voltage References 1 | ||
| LT6660 | PRODUCTION | Tiny Micropower Precision Series References in 2mm × 2mm DFN |
Evaluation Kits
LTC2451: 16-bit Single-Ended I2C Ultra-Tiny ADC (Requires DC590)