Datasheet LTC2311-12 (Analog Devices)

LTC2311-12 12-Bit + Sign, 5Msps Differential Input ADC with Wide Input Common Mode Range
FeaTures DescripTion
n
5Msps Throughput Rate
The LTC®2311-12 is a low noise, high speed 12-bit + n
±0.25LSB INL (Typ), ±1LSB INL Guaranteed
sign successive approximation register (SAR) ADC with n
Guaranteed 12-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
12 has an 8VP-P differential input range, making it ideal n
73dB SNR (Typ) at fIN = 2.2MHz
for applications which require a wide dynamic range with n
–85dB THD (Typ) at fIN = 2.2MHz
high common mode rejection. The LTC2311-12 achieves n Guaranteed Operation –40°C to 125°C ±0.25LSB INL typical, no missing codes at 12 bits and n Single 3.3V or 5V Supply 73dB SNR typical. n Low Drift (20ppm/°C Max) 2.048V or 4.096V Internal The LTC2311-12 has an onboard low drift (20ppm/°C max) Reference with 1.25V External Reference Input 2.048V or 4.096V temperature compensated reference n 1.8V to 2.5V I/O Voltages and provides an external 1.25V buffered reference input. n CMOS or LVDS SPI-Compatible Serial I/O The LTC2311-12 also has a high speed SPI-compatible n Power Dissipation 50mW at VDD = 5V (Typ) serial interface that supports CMOS or LVDS. The fast n Small 16-Lead (4mm × 5mm) MSOP Package 5Msps throughput with one-cycle latency makes the LTC2311-12 ideally suited for a wide variety of high speed
applicaTions
applications. The LTC2311-12 dissipates only 50mW with n High Speed Data Acquisition Systems a 5V supply and offers nap and sleep modes to reduce n Communications the power consumption 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 applicaTion DIFFERENTIAL INPUTS
3.3V OR 5V
16k Point FFT fSMPL = 5Msps, fIN = 2.2MHz NO CONFIGURATION REQUIRED
0
IN+, IN–
1µF SNR = 73.3dB THD = –85dB –20 SINAD = 73.1dB ARBITRARY DIFFERENTIAL V REFOUT SFDR = 91dB 25Ω DD –40 A 10µF IN+ –60 LTC2311-12 0V 0V 47pF REFIN –80 10µF AMPLITUDE (dBFS) –100 BIPOLAR UNIPOLAR 25Ω LVDS OR CMOS SDO AIN– CONFIGURABLE –120 SCK I/O CMOS/LVDS –140 CNV 0 0.5 1 1.5 2 2.5 0V 0V GND OVDD 1.8V TO 2.5V FREQUENCY (MHz) 231112 TA01b 1µF 231112 TA01a 231112f For more information www.linear.com/LTC2311-12 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 Typical Application Related Parts