LINEAR TECHNOLOGY LTC2480 Data Sheet manual specifications user guide
Summary
The LTC2480 is a high-precision 16-Bit Sigma-Delta Analog-to-Digital Converter featuring patented Easy Drive technology for zero differential input current cancellation. Ideal for connecting directly to challenging, high-impedance sensors and source types like strain gauges or weighing scales. The accompanying documentation provides complete integration guidelines, detailed electrical specifications, programmable gain settings (1–256), and advanced line frequency rejection (50/60Hz) essential for instrumentation designers building robust measurement and process control systems.
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LTC2480
16-Bit ∆Σ ADC with Easy Drive Input Current Cancellation
FEATURES DESCRIPTIO Easy Drive Technology Enables Rail-to-Rail Inputs The LTC®2480 combines a 16-bit plus sign No Latency ∆ΣTM
with Zero Differential Input Current analog-to-digital converter with patented Easy Drive TM tech- Directly Digitizes High Impedance Sensors with nology. The patented sampling scheme eliminates dynamic Full Accuracy input current errors and the shortcomings of on-chip buff- Programmable Gain from 1 to 256 ering through automatic cancellation of differential input Integrated Temperature Sensor current. This allows large external source impedances and GND to VCC Input/Reference Common Mode Range input signals, with rail-to-rail input range to be directly digi- Programmable 50Hz, 60Hz or Simultaneous tized while maintaining exceptional DC accuracy.
50Hz/60Hz Rejection Mode
The LTC2480 includes on-chip programmable gain, a
2ppm (0.25LSB) INL, No Missing Codes
temperature sensor and an oscillator. The LTC2480 can be
1ppm Offset and 15ppm Full-Scale Error
configured to provide a programmable gain from 1 to 256
Selectable 2x Speed Mode (15Hz Using Internal
in 8 steps, measure an external signal or internal tempera-
Oscillator)
ture sensor and reject line frequencies. 50Hz, 60Hz or
No Latency: Digital Filter Settles in a Single Cycle
simultaneous 50Hz/60Hz line frequency rejection can be
Single Supply 2.7V to 5.5V Operation +F ER RO (p pm
selected as well as a 2x speed-up mode.
Internal Oscillator
Available in a Tiny (3mm × 3mm) 10-Lead The LTC2480 allows a wide common mode input range DFN Package (0V to VCC) independent of the reference voltage. The reference can be as low as 100m V or can be tied directly APPLICATIO S to VCC. The LTC2480 includes an on-chip trimmed oscil- lator eliminating the need for external crystals or oscilla-
Direct Sensor Digitizer
tors. Absolute accuracy and low drift are automatically
Weight Scales
maintained through continuous, transparent, offset and
Direct Temperature Measurement
full-scale calibration.
Strain Gauge Transducers
, LTC and LT are registered trademarks of Linear Technology Corporation.
Instrumentation No Latency ∆Σ and Easy Drive are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Industrial Process Control
Patent Pending.
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
SDI CIN = 1µF
10k IDIFF = 0 VREF VCC
VIN SDO
4-WIRE –20
SENSE 1µF LTC2480
SCK SPI INTERFACE
VIN –40
10k GND FO
2480 TA01
1k 10k 100k RSOURCE (Ω) 2480 TA04
Page Summary Contents For LINEAR TECHNOLOGY LTC2480 Data Sheet manual specifications user guide
Manual Details
| Brand | Linear |
|---|---|
| Pages | 40 |
| File Size | 535.33 KB |
| Published | July 16, 2026 |
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Frequently Asked Questions
Does the LTC2480 require external crystal oscillators?
No, it includes an on-chip trimmed oscillator, eliminating the need for external crystals or oscillation components.
What function does the Easy Drive Technology provide?
It cancels differential input current errors, enabling the direct digitization of high impedance sensors with rail-to-rail inputs.
How does the ADC handle line frequency noise?
It includes a programmable 50Hz, 60Hz or simultaneous rejection mode to filter out line frequencies while maintaining DC accuracy.
What is the single supply voltage range for operation?
The device supports single supply operation with a voltage range from $2.7V$ to $5.5V$.
Does it measure internal temperature?
Yes, it features an integrated temperature sensor that maintains absolute accuracy through continuous full-scale calibration.