LTC2380-24 24-Bit, 1.5Msps/2Msps, Low Power SAR ADC with Integrated Digital Filter FEATURESDESCRIPTION n Guaranteed 24-Bits No Missing Codes The LTC®2380-24 is a low noise, low power, high speed n ±0.5ppm INL (Typ) 24-bit successive approximation register (SAR) ADC with n Integrated Digital Filter with Real-Time Averaging an integrated digital averaging filter. Operating from a 2.5V n Low Power: 28mW at 2Msps supply, the LTC2380-24 has a ±VREF fully differential input n 100dB SNR (Typ) at 1.5Msps range with VREF ranging from 2.5V to 5.1V. The LTC2380- n 145dB Dynamic Range (Typ) at 30.5sps 24 consumes only 28mW and achieves ±3.5ppm INL n –117dB THD (Typ) at fIN = 2kHz maximum and no missing codes at 24 bits. n 50Hz/60Hz Rejection The LTC2380-24 has an easy to use integrated digital n Digital Gain Compression (DGC) averaging filter that can average 1 to 65536 conversion n Guaranteed Operation to 85°C results real-time, dramatically improving dynamic range n Single 2.5V Supply from 101dB at 1.5Msps to 145dB at 30.5sps. No separate n Fully Differential Input Range Up to ±5V programming interface or configuration register is required. n 1.8V to 5V SPI-Compatible Serial I/O with Daisy- Chain Mode The high speed SPI-compatible serial interface supports n 16-Lead MSOP and 4mm × 3mm DFN Packages 1.8V, 2.5V, 3.3V and 5V logic while also featuring a daisy- chain mode. The LTC2380-24 automatically powers down between conversions, reducing power dissipation at lower APPLICATIONS sampling rates. n Seismology L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property n Energy Exploration of their respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, n Medical Imaging 8810443 and Patents pending. n High Speed Data Acquisition n Industrial Process Control n ATE TYPICAL APPLICATIONIntegral Nonlinearity vs Output Code 2.5V 1.8V TO 5V 3.0 10µF 0.1µF 2.0 1.0 V V REF 10Ω 6800pF DD OVDD CHAIN RDL/SDI + IN+ 0V SDO 0 V 3300pF LTC2380-24 SCK REF BUSY IN– – CNV SAMPLE CLOCK INL ERROR (ppm) –1.0 0V 10Ω 6800pF REF GND REF/DGC VREF 2.5V TO 5.1V 238024 TA01 –2.0 47µF (X7R, 1210 SIZE) –3.0 –8388608 –4194304 0 4194304 8388607 OUTPUT CODE 238024 TA01b 238024fa For more information www.linear.com/LTC2380-24 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Converter Characteristics Dynamic Accuracy Reference Input Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Package Description Revision History Typical Application Related Parts
