Datasheet LTC2356-12, LTC2356-14 (Analog Devices) - 3

LTC2356-12/LTC2356-14
analog input The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. With internal reference. VDD = 3.3V. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Analog Differential Input Range (Notes 3, 8, 9) 3.1V ≤ VDD ≤ 3.6V l –1.25 to 1.25 V VCM Analog Common Mode + Differential 0 to VDD V Input Range (Note 10) IIN Analog Input Leakage Current l 1 µA CIN Analog Input Capacitance (Note 19) 13 pF tACQ Sample-and-Hold Acquisition Time (Note 6) l 39 ns tAP Sample-and-Hold Aperture Delay Time 1 ns tJITTER Sample-and-Hold Aperture Delay Time Jitter 0.3 ps CMRR Analog Input Common Mode Rejection Ratio fIN = 1MHz, VIN = 0V to 3V –60 dB fIN = 100MHz, VIN = 0V to 3V –15 dB
Dynamic accuracy The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T + – A = 25°C with external reference = 2.55V. VDD = 3.3V. Single-ended AIN signal drive with AIN = 1.5V DC. Differential signal drive with V + – CM = 1.5V at AIN and AIN LTC2356-12 LTC2356-14 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
SINAD Signal-to-Noise Plus 100kHz Input Signal (Note 19) 71.1 74.1 dB Distortion Ratio 1.4MHz Input Signal (Note 19) l 68 71.1 70 72.3 dB THD Total Harmonic 100kHz First 5 Harmonics (Note 19) –86 –86 dB Distortion 1.4MHz First 5 Harmonics (Note 19) l –82 –76 –82 –78 dB SFDR Spurious Free 100kHz Input Signal (Note 19) 86 86 dB Dynamic Range 1.4MHz Input Signal (Note 19) 82 82 dB IMD Intermodulation 0.625VP-P to 1.4MHz Summed with 0.625VP-P –82 –82 dB Distortion 1.56MHz into A + – IN and Inverted into AIN Code-to-Code VREF = 2.5V (Note 18) 0.25 1 LSBRMS Transition Noise Full Power Bandwidth VIN = 2.5VP-P, SDO = 11585LSBP-P (Note 15) 50 50 MHz Full Linear Bandwidth S/(N + D) ≥ 68dB 5 5 MHz
internal reFerence characteristics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDD = 3.3V. PARAMETER CONDITIONS MIN TYP MAX UNITS
VREF Output Voltage IOUT = 0 2.5 V VREF Output Tempco 15 ppm/°C VREF Line Regulation VDD = 3.1V to 3.6V, VREF = 2.5V 600 µV/V VREF Output Resistance Load Current = 0.5mA 0.2 Ω VREF Settling Time CREF = 10µF 2 ms External VREF Input Range 2.55 VDD V 2356fd For more information www.linear.com/LTC2356-12 3 Document Outline Features Description Applications Block Diagram Absolute Maximum Ratings Pin Configuration Order Information Converter Characteristics Analog Input Dynamic Accuracy Internal Reference Characteristics Digital Inputs and Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagram Applications Information Revision History Typical Application Related Parts