LTC2311-16 16-Bit, 5Msps Differential Input ADC with Wide Input Common Mode Range FEATURESDESCRIPTION n 5Msps Throughput Rate The LTC®2311-16 is a low noise, high speed 16-bit n ±3LSB INL (Typ), ±8LSB INL Guaranteed successive approximation register (SAR) ADC with n Guaranteed 16-Bit, No Missing Codes differential inputs and wide input common mode range. n 8VP-P Differential Inputs with Wide Input Common Operating from a single 3.3V or 5V supply, the LTC2311- Mode Range 16 has an 8VP-P differential input range, making it ideal n 81dB SNR (Typ) at fIN = 2.2MHz for applications which require a wide dynamic range with n –90dB THD (Typ) at fIN = 2.2MHz high common mode rejection. The LTC2311-16 achieves n Guaranteed Operation –40°C to 125°C ±3LSB INL typical, no missing codes at 16 bits and 81dB n Single 3.3V or 5V Supply SNR typical. n Low Drift (20ppm/°C Max) 2.048V or 4.096V Internal The LTC2311-16 has an onboard low drift (20ppm/°C max) Reference with 1.25V External Reference Input 2.048V or 4.096V temperature-compensated reference and n 1.8V to 2.5V I/O Voltages provides an external 1.25V buffered reference input. The n CMOS or LVDS SPI-Compatible Serial I/O LTC2311-16 also has a high speed SPI-compatible serial n Power Dissipation 50mW at VDD = 5V (Typ) interface that supports CMOS or LVDS. The fast 5Msps n Small 16-Lead (4mm × 5mm) MSOP Package throughput with one-cycle latency makes the LTC2311-16 ideally suited for a wide variety of high speed applications. APPLICATIONS The LTC2311-16 dissipates only 50mW with a 5V supply n High Speed Data Acquisition Systems and offers nap and sleep modes to reduce the power n Communications consumption to 5μW for further power savings during n Remote Data Acquisition inactive periods. n Imaging 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 Optical Networking n Automotive n Multiphase Motor Control TYPICAL APPLICATIONDIFFERENTIAL INPUTS 3.3V OR 5V 32k Point FFT fNO CONFIGURATION REQUIREDSMPL = 5Msps, fIN = 2.2MHzIN+, IN– 1µF 0 SNR = 81.6dB THD = –90dB ARBITRARY DIFFERENTIAL –20 V REFOUT SINAD = 81.1dB 25Ω DD SFDR = 96dB A 10µF IN+ –40 LTC2311-16 –60 0V 0V 47pF REFIN 10µF –80 AMPLITUDE (dBFS) BIPOLAR UNIPOLAR –100 25Ω LVDS OR CMOS SDO AIN– CONFIGURABLE SCK –120 I/O CMOS/LVDS CNV –140 0V 0V GND OV 0 0.5 1 1.5 2 2.5 DD 1.8V TO 2.5V FREQUENCY (MHz) 1µF 231116 TA01b 231116 TA01a 231116fa For more information www.linear.com/LTC2311-16 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Digital Inputs And Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Functional Block Diagram Timing Diagram Applications Information Package Description Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Converter Characteristics Electrical Characteristics Dynamic Accuracy Internal Reference Characteristics Digital Inputs And Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information OVERVIEW CONVERTER OPERATION TRANSFER FUNCTION INPUT DRIVE CIRCUITS ADC REFERENCE DYNAMIC PERFORMANCE POWER CONSIDERATIONS TIMING AND CONTROL DIGITAL INTERFACE BOARD LAYOUT Package Description Revision History Typical Application Related Parts
