LINEAR TECHNOLOGY LTC2482 16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation Data Sheet User Manual
Summary
The LTC2482 is a high-precision 16-bit $\Delta\Sigma$ Analog-to-Digital Converter featuring patented Easy Drive Technology for superior signal integrity. This advanced ADC provides robust rail-to-rail input capabilities while automatically canceling common-mode differential current errors, ensuring exceptional accuracy even across wide voltage ranges. The manual details its usage in critical applications such as weight scales, strain measurement, and industrial process control. It is ideal for engineers requiring ultra-low noise (600nV RMS) data acquisition with simultaneous rejection of 50Hz/60Hz line frequency interference.
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LTC2482
16-Bit ∆Σ ADC with Easy Drive Input Current Cancellation
FEATURES DESCRIPTIO
Easy Drive Technology Enables Rail-to-Rail Inputs The LTC®2482 combines a 16-bit plus sign No Latency with Zero Differential Input Current ∆Σ™ analog-to-digital converter with patented Easy Drive™ Directly Digitizes High Impedance Sensors with technology. The patented sampling scheme eliminates Full Accuracy dynamic input current errors and the shortcomings of on- 600n V RMS Noise, Independent of VREF chip buffering through automatic cancellation of differen- Operates with a Reference as Low as 100m V with tial input current. This allows large external source 16-Bit Resolution impedances and input signals with rail-to-rail input range GND to VCC Input/Reference Common Mode Range to be directly digitized while maintaining exceptional DC Simultaneous 50Hz/60Hz Rejection Mode accuracy.
2ppm INL, No Missing Codes
The LTC2482 allows a wide common mode input range
1ppm Offset and 15ppm Total Unadjusted Error
(0V to VCC) independent of the reference voltage. The
No Latency: Digital Filter Settles in a Single Cycle
reference can be as low as 100m V or can be tied directly
Single Supply 2.7V to 5.5V Operation
to VCC. The noise level is 600n V RMS independent of VREF.
+F ER RO (p pm
Internal Oscillator
This allows direct digitization of low level signals with 16-
Available in a Tiny (3mm × 3mm) 10-Lead
bit accuracy. The LTC2482 includes an on-chip trimmed
DFN Package
oscillator, eliminating the need for external crystals or oscillators and provides 87d B rejection of 50Hz and 60Hz
APPLICATIO S
line frequency noise. Absolute accuracy and low drift are
Direct Sensor Digitizer automatically maintained through continuous, transpar- Weight Scales ent, offset and full-scale calibration. Direct Temperature Measurement
, LTC and LT are registered trademarks of Linear Technology Corporation. No Latency ∆Σ and Easy Drive are trademarks of Linear Technology Corporation.
Strain Gauge Transducers
All other trademarks are the property of their respective owners. Patent pending.
Instrumentation Industrial Process Control DVMs and Meters
TYPICAL APPLICATIO
+FS Error vs RSOURCE at IN+ and IN–
VCC = 5V VCC VREF = 5V + = 3.75V VIN – = 1.25V VIN
1µF FO = GND
TA = 25°C
CIN = 1µF
10k IDIFF = 0 VREF VCC
SCK 3-WIRE
SENSE 1µF LTC2482 –20
SPI INTERFACE CS
10k GND FO
2482 TA01
1k 10k 100k RSOURCE (Ω) 2482 TA02
Page Summary Contents For LINEAR TECHNOLOGY LTC2482 16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation Data Sheet User Manual
Manual Details
| Brand | Current |
|---|---|
| Pages | 32 |
| File Size | 396.50 KB |
| Published | May 31, 2026 |
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Frequently Asked Questions
What type of input signals can the LTC2482 handle?
It supports rail-to-rail inputs, directly digitizing common mode ranges from GND to V.
How is external component use minimized during setup?
The device includes an on-chip trimmed DFN package oscillator, eliminating the need for external crystals or Q oscillators.
What does Easy Drive technology provide to measurements?
It allows digitization of high impedance sensors by automatically canceling common-mode dynamic input current errors.
How accurate is the ADC regarding typical noise and resolution?
It specifies a 16-bit resolution with an output noise level of 600nV RMS.
What operating temperature range is available for this device?
The LTC2482I model is rated for an extended commercial temperature range of –40°C to 85°C.