LTC2393-16 16-Bit, 1Msps SAR ADC With 94dB SNR FEATURESDESCRIPTION n 1Msps Throughput Rate The LTC®2393-16 is a low noise, high speed 16-bit suc- n ±2LSB INL (Max) cessive approximation register (SAR) ADC. Operating n Guaranteed 16-Bit No Missing Codes from a single 5V supply, the LTC2393-16 supports a large n 94.2dB SNR (Typ) at fIN = 20kHz ±4.096V fully differential input range, making it ideal for n Guaranteed Operation to 125°C high performance applications which require maximum n Single 5V Supply dynamic range. The LTC2393-16 achieves ±2LSB INL n 1.8V to 5V I/O Voltages max, no missing codes at 16-bits and 94.2dB SNR (typ). n 140mW Power Dissipation The LTC2393-16 includes a precision internal reference n ±4.096V Differential Input Range with a guaranteed 0.5% initial accuracy and a ±20ppm/°C n Internal Reference (20ppm/°C Max) (max) temperature coefficient. Fast 1Msps throughput with n No Pipeline Delay, No Cycle Latency no cycle latency in both parallel and serial interface modes n Parallel and Serial Interface makes the LTC2393-16 ideally suited for a wide variety n Internal Conversion Clock of high speed applications. An internal oscillator sets the n 48-Lead 7mm × 7mm LQFP and QFN Packages conversion time, easing external timing considerations. The LTC2393-16 dissipates only 140mW at 1Msps, while APPLICATIONS both nap and sleep power-down modes are provided to further reduce power during inactive periods. n Medical Imaging n High Speed Data Acquisition L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Digital Signal Processing n Industrial Process Control n Instrumentation n ATE TYPICAL APPLICATION16k Point FFT fS = 1Msps, 5V 5V 1.8V TO 5V fIN = 20kHz 10μF 0.1μF 10μF 0.1μF 4.7μF 0 SNR = 94.2dB –20 THD –105dB ANALOG INPUT AVP DVP OVP PARALLEL SINAD = 93.9dB 0V TO 4.096V –40 249Ω OR SFDR = 108dB 16 BIT IN+ SERIAL –60 INTERFACE –80 LT6350 2200pF LTC2393-16 SER/PAR –100 BYTESWAP 249Ω OB/2C IN– CS AMPLITUDE (dBFS) –120 SINGLE-ENDED- RD –140 TO-DIFFERENTIAL BUSY VCM REFIN REFOUT CNVST PD RESET GND OGND DRIVER 239316 TA01 –160 10μF 1μF SAMPLE CLOCK –180 0 100 200 300 400 500 FREQUENCY (kHz) 239316 G08 239316fa 1
