LTC2452
PRODUCTIONUltra-Tiny, Differential, 16-Bit ΔΣ ADC with SPI Interface
- Part Models
- 8
- 1ku List Price
- Starting From $1.53
Overview
- ±VCC Differential Input Range
- 16-Bit Resolution (Including Sign), No Missing Codes
- 2LSB Offset Error
- 4LSB Full-Scale Error
- 60 Conversions Per Second
- Single Conversion Settling Time for Multiplexed Applications
- Single-Cycle Operation with Auto Shutdown
- 800μA Supply Current
- 0.2μA Sleep Current
- Internal Oscillator—No External Components Required
- SPI Interface
- Ultra-Tiny 3mm × 2mm DFN and TSOT-23 Packages
The LTC2452 is an ultra-tiny, fully differential, 16-bit, analog-to-digital converter. The LTC2452 uses a single 2.7V to 5.5V supply and communicates through an SPI interface. The ADC is available in an 8-pin, 3mm × 2mm DFN package 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 has no latency for multiplexed applications. The LTC2452 includes a proprietary input sampling scheme that reduces the average input sampling current several orders of magnitude when compared to conventional delta-sigma converters. Additionally, due to its architecture, there is negligible current leakage between the input pins.
The LTC2452 can sample at 60 conversions per second, and due to the very large oversampling ratio, has extremely relaxed anti-aliasing requirements. The LTC2452 includes continuous internal offset and full-scale calibration algorithms which are transparent to the user, ensuring accuracy over time and over the operating temperature range. The converter has an external REF pin and the differential input voltage range can extend up to ±VREF .
Following a single conversion, the LTC2452 can automatically enter a sleep mode and reduce its supply current to less than 0.2μA. If the user reads the ADC once a second, the LTC2452 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 |
|---|---|---|---|
| LTC2452CDDB#TRMPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC2452CDDB#TRPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC2452CTS8#TRMPBF | 8-Lead SOT-23 | ||
| LTC2452CTS8#TRPBF | 8-Lead SOT-23 | ||
| LTC2452IDDB#TRMPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC2452IDDB#TRPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC2452ITS8#TRMPBF | 8-Lead SOT-23 | ||
| LTC2452ITS8#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
| Parts | Product Life Cycle | Description |
|---|---|---|
| Interface Transceivers & Isolators 1 | ||
| LTM2883 | PRODUCTION | SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power |
| Supervisory Circuits & Reset ICs 1 | ||
| LTC2934 | PRODUCTION | Ultra-Low Power Adjustable Supervisor with Power-Fail Output |
| Voltage References 1 | ||
| LT6660 | PRODUCTION | Tiny Micropower Precision Series References in 2mm × 2mm DFN |
Evaluation Kits
LTC2452 | 16-Bit, SPI Differential Ultra-Tiny ∆Σ ADC (Requires DC590)