Datasheet LTC2370-16 (Analog Devices)

LTC2370-16 16-Bit, 2Msps, Pseudo- Differential Unipolar SAR ADC with 94dB SNR
FEATURES DESCRIPTION
n
2Msps Throughput Rate
The LTC®2370-16 is a low noise, low power, high speed n
±0.85LSB INL (Max)
16-bit successive approximation register (SAR) ADC. n
Guaranteed 16-Bit No Missing Codes
Operating from a 2.5V supply, the LTC2370-16 has a 0V n
Low Power: 19mW at 2Msps, 19µW at 2ksps
to VREF pseudo-differential unipolar input range with VREF n
94dB SNR (Typ) at fIN = 2kHz
ranging from 2.5V to 5.1V. The LTC2370-16 consumes n –
112dB THD (Typ) at fIN = 2kHz
only 19mW and achieves ±0.85LSB INL maximum, no n Guaranteed Operation to 125°C missing codes at 16 bits with 94dB SNR. n 2.5V Supply The LTC2370-16 has a high speed SPI-compatible serial n Pseudo-Differential Unipolar Input Range: 0V to VREF interface that supports 1.8V, 2.5V, 3.3V and 5V logic while n VREF Input Range from 2.5V to 5.1V also featuring a daisy-chain mode. The fast 2Msps through- n No Pipeline Delay, No Cycle Latency put with no cycle latency makes the LTC2370-16 ideally n 1.8V to 5V I/O Voltages suited for a wide variety of high speed applications. An n SPI-Compatible Serial I/O with Daisy-Chain Mode internal oscillator sets the conversion time, easing external n Internal Conversion Clock timing considerations. The LTC2370-16 automatical y pow- n 16-Lead MSOP and 4mm × 3mm DFN Packages ers down between conversions, leading to reduced power dissipation that scales with the sampling rate.
APPLICATIONS
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n Medical Imaging SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7705765. n High Speed Data Acquisition n Portable or Compact Instrumentation n Industrial Process Control n Low Power Battery-Operated Instrumentation n ATE
TYPICAL APPLICATION 32k Point FFT fS = 2Msps, fIN = 2kHz
2.5V 1.8V TO 5V 0 SNR = 94dB –20 THD = –112dB 10µF 0.1µF SINAD = 93.9dB –40 SFDR = 117dB VREF + –60 V 5.1Ω DD OVDD 0V CHAIN LT®6202 IN+ RDL/SDI –80 – SDO 10nF LTC2370-16 –100 SCK IN– BUSY AMPLITUDE (dBFS) –120 CNV SAMPLE CLOCK REF GND –140 237016 TA01a 2.5V TO 5.1V –160 47µF (X5R, 0805 SIZE) –180 0 100 200 300 400 500 600 700 800 9001000 FREQUENCY (kHz) 237016 TA01b 237016fa 1 Document Outline Features Applications Description Typical Application 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 Timing Diagrams Board Layout Package Description Revision History Typical Application Related Parts