Datasheet LTC2320-16 (Analog Devices)

LTC2320-16 Octal, 16-Bit, 1.5Msps/Ch Simultaneous Sampling ADC
FEATURES DESCRIPTION
n
1.5Msps/Ch Throughput Rate
The LTC®2320-16 is a low noise, high speed octal 16-bit n
Eight Simultaneously Sampling Channels
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
Operating from a single 3.3V or 5V supply, the LTC2320-16
Common Mode Range
has an 8VP-P differential input range, making it ideal for n
82dB SNR (Typ) at fIN = 500kHz
applications which require a wide dynamic range with high n
–90dB THD (Typ) at fIN = 500kHz
common mode rejection. The LTC2320-16 achieves ±2LSB n Guaranteed Operation to 125°C INL typical, no missing codes at 16 bits and 82dB SNR. n Single 3.3V or 5V Supply The LTC2320-16 has an onboard low drift (20ppm/°C max) n Low Drift (20ppm/°C Max) 2.048V or 4.096V 2.048V or 4.096V temperature-compensated reference. Internal Reference The LTC2320-16 also has a high speed SPI-compatible n 1.8V to 2.5V I/O Voltages serial interface that supports CMOS or LVDS. The fast n CMOS or LVDS SPI-Compatible Serial I/O 1.5Msps per channel throughput with no latency makes n Power Dissipation 20mW/Ch (Typ) the LTC2320-16 ideally suited for a wide variety of high n Small 52-Pin (7mm × 8mm) QFN Package speed applications. The LTC2320-16 dissipates only 20mW per channel and offers nap and sleep modes to reduce the
APPLICATIONS
power consumption to 26μW for further power savings n High Speed Data Acquisition Systems during inactive periods. n Communications L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property n Optical Networking of their respective owners. n Multiphase Motor Control
TYPICAL APPLICATION
10µF 1µF 3.3V OR 5V 1.8V TO 2.5V
32k Point FFT fSMPL = 1.5Msps, TRUE DIFFERENTIAL INPUTS
+ VDD GND GND OVDD
f NO CONFIGURATION REQUIRED
A
IN = 500kHz
IN1– S/H
IN
AIN1 CMOS/LVDS 0
IN+, IN–
MUX 16-BIT SDR/DDR + SAR ADC SNR = 82.2dB AIN2 REFBUFEN – S/H THD = –91.2dB A ARBITRARY DIFFERENTIAL IN2 –20 SINAD = 81.8dB VDD VDD A + IN3 SFDR = 94.7dB – S/H A SDO1 IN3 SDO2 –40 MUX 16-BIT A + SAR ADC SDO3 IN4 0V 0V – S/H A SDO4 IN4 SDO5 –60 LTC2320-16 SDO6 A + IN5– S/H SDO7 AIN5 SDO8 –80 BIPOLAR UNIPOLAR MUX 16-BIT V CLKOUT DD VDD A + SAR ADC IN6– S/H SCK A AMPLITUDE (dBFS) IN6 –100 CNV SAMPLE CLOCK A + IN7 0V 0V – S/H A –120 IN7 MUX 16-BIT A + SAR ADC IN8– S/H AIN8 –140 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 REF REFOUT1 REFOUT2 REFOUT3 REFOUT4 232016 TA01a FREQUENCY (MHz) EIGHT SIMULTANEOUS 1µF 10µF 10µF 10µF 10µF 232016 TA01b SAMPLING CHANNELS 232016fb For more information www.linear.com/LTC2320-16 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Converter 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 Package Description Related Parts .32673 Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Converter Characteristics Digital Inputs And Digital Outputs Power Requirements ADC Timing Characteristics ADC Timing Characteristics ADC Timing Characteristics Typical Performance Characteristics Pin Functions CMOS data output option (CMOS/LVDS = low) LVDS data output option (CMOS/LVDS = high or FLOAT) 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 Typical Application Related Parts