LTC2484

PRODUCTION

24-Bit ΔΣ ADC with Easy Drive Input Current Cancellation

Part Models: 4
1ku List Price: Starting From $2.95

Viewing:

Overview

Easy Drive Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current
Directly Digitizes High Impedance Sensors with Full Accuracy
600nV_RMS Noise
GND to V_CC Input/Reference Common Mode Range
Programmable 50Hz, 60Hz or Simultaneous 50Hz/60Hz Rejection Mode
2ppm INL, No Missing Codes
1ppm Offset and 15ppm Total Unadjusted Error
Selectable 2× Speed Mode (15Hz Using Internal Oscillator)
No Latency: Digital Filter Settles in a Single Cycle
Single Supply 2.7V to 5.5V Operation
Internal Oscillator
Available in a Tiny (3mm × 3mm) 10-Lead DFN Package

The LTC2484 combines a 24-bit No Latency ΔΣ^™ analog-to-digital converter with patented Easy Drive^™ technology. The patented sampling scheme eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This allows large external source impedances and input signals with rail-to-rail input range to be directly digitized while maintaining exceptional DC accuracy.

The LTC2484 includes an on-chip oscillator. The LTC2484 can be configured to reject line frequencies. 50Hz, 60Hz or simultaneous 50Hz/60Hz line frequency rejection can be selected as well as a 2× speed-up mode.

The LTC2484 allows a wide common mode input range (0V to V_CC) independent of the reference voltage. The reference can be as low as 100mV or can be tied directly to V_CC. The LTC2484 includes an on-chip trimmed oscillator, eliminating the need for external crystals or oscillators. Absolute accuracy and low drift are automatically maintained through continuous, transparent, offset and full-scale calibration.

Applications

Direct Sensor Digitizer
Weight Scales
Direct Temperature Measurement
Strain Gauge Transducers
Instrumentation
Industrial Process Control
DVMs and Meters

Part Models: 4
1ku List Price: Starting From $2.95

Documentation

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
LTC2484CDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2484CDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2484IDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2484IDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 30, 2020 - 20_0244 Notification of Wafer Fab Location Change for 0.6µm CMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)
		PCN20_0244_Form Material_Report Delta Qualification Matrix Qualification Results Summary Other
LTC2484CDD#PBF	PRODUCTION
LTC2484CDD#TRPBF	PRODUCTION
LTC2484IDD#PBF	PRODUCTION
LTC2484IDD#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
Current Mirrors & Matched Devices 1
LT5400	RECOMMENDED FOR NEW DESIGNS	Quad Matched Resistor Network
Oscillators 1
LTC6991	PRODUCTION	TimerBlox: Resettable, Low Frequency Oscillator
Temperature Sensors 1
LTC2995	PRODUCTION	Temperature Sensor and Dual Voltage Monitor with Alert Outputs
Voltage References 1
LTC6655	PRODUCTION	0.25ppm Noise, Low Drift Precision References

Tools & Simulations

Linduino 5

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.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

Evaluation Kits

LTC2484IDD Demo Board | 24-Bit Delta Sigma ADC w/Temp (requires DC2026)

Buy Now View Details

Product Details

Demonstration circuit DC939 features the LTC2484, a 24-bit high performance DS analog-to-digital converter (ADC). The LTC2484 features 2ppm linearity, 0.5mV offset, and 600nV RMS noise. The input is fully differential, with input common mode rejection of 140 dB. The LTC2484 is available in a 10 pin DFN package and has an easy to use SPI interface. DC939 is a member of ADI's QuickEval^™ family of demonstration boards. It is designed to allow easy evaluation of the LTC2484 and may be connected directly to the target applications analog signals while using the DC590 USB Serial Controller board and supplied software to measure performance. The exposed ground planes allow proper grounding to prototype circuitry. After evaluating with ADI's software, the digital signals can be connected to the end application’s processor / controller for development of the serial interface.