Datasheet LTC2368-16 (Analog Devices)

LTC2368-16 16-Bit, 1Msps, Pseudo- Differential Unipolar SAR ADC with 94.7dB SNR
FEATURES DESCRIPTION
n
1Msps Throughput Rate
The LTC®2368-16 is a low noise, low power, high speed n
±0.75LSB INL (Max)
16-bit successive approximation register (SAR) ADC. n
Guaranteed 16-Bit No Missing Codes
Operating from a 2.5V supply, the LTC2368-16 has a 0V n
Low Power: 13.5mW at 1Msps, 13.5µW at 1ksps
to VREF pseudo-differential unipolar input range with VREF n
94.7dB SNR (Typ) at fIN = 2kHz
ranging from 2.5V to 5.1V. The LTC2368-16 consumes n –
118dB THD (Typ) at fIN = 2kHz
only 13.5mW and achieves ±0.75LSB INL maximum, no n Guaranteed Operation to 125°C missing codes at 16 bits with 94.7dB SNR. n 2.5V Supply The LTC2368-16 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 n VREF Input Range from 2.5V to 5.1V while also featuring a daisy-chain mode. The fast 2Msps n No Pipeline Delay, No Cycle Latency throughput with no cycle latency makes the LTC2368-16 n 1.8V to 5V I/O Voltages ideally suited for a wide variety of high speed applications. n SPI-Compatible Serial I/O with Daisy-Chain Mode An internal oscillator sets the conversion time, easing exter- n Internal Conversion Clock nal timing considerations. The LTC2368-16 automatically n 16-Lead MSOP and 4mm × 3mm DFN Packages powers 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 = 1Msps, fIN = 2kHz
2.5V 1.8V TO 5V 0 SNR = 94.7dB –20 THD = –118dB 10µF 0.1µF SINAD = 94.7dB –40 SFDR = 119dB VREF + –60 V 10Ω DD OVDD 0V CHAIN LT®6202 IN+ RDL/SDI –80 – SDO 10nF LTC2368-16 –100 SCK IN– BUSY AMPLITUDE (dBFS) –120 CNV SAMPLE CLOCK REF GND –140 236816 TA01a 2.5V TO 5.1V –160 47µF (X5R, 0805 SIZE) –180 0 100 200 300 400 500 FREQUENCY (kHz) 236816 TA01b 236816f 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 Typical Application Related Parts