LTC1863L/LTC1867L DIGITAL INPUTS AND DIGITAL OUTPUTS The l denotes the specifications which apply over thefull operating temperature range, otherwise specifications are at TA = 25°C. (Note 5)LTC1863L/LTC1867L/LTC1867LASYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS IIN Digital Input Current VIN = 0V to VDD l ±10 µA CIN Digital Input Capacitance 2 pF VOH High Level Output Voltage (SDO) VDD = 2.7V, IO = –10µA 2.68 V VDD = 2.7V, IO = –200µA l 23 2.65 V VOL Low Level Output Voltage (SDO) VDD = 2.7V, IO = 160µA 0.05 V VDD = 2.7V, IO = 1.6µA l 0.15 0.4 V ISOURCE Output Source Current SDO = 0V –9.7 mA ISINK Output Sink Current SDO = VDD 6 mA Hi-Z Output Leakage CS/CONV = High, SDO = 0V or VDD l ±10 µA Hi-Z Output Capacitance CS/CONV = High (Note 10) l 15 pF Data Format Unipolar Straight Binary Bipolar Two’s Complement POWER REQUIREMENTS The l denotes the specifications which apply over the full operating temperaturerange, otherwise specifications are at TA = 25°C. (Note 5)LTC1863L/LTC1867L/LTC1867LASYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS VDD Supply Voltage (Note 9) 2.7 3.6 V IDD Supply Current fSAMPLE = 175ksps, Internal REF l 0.75 1 mA NAP Mode 170 µA SLEEP Mode l 0.2 3 µA PDISS Power Dissipation fSAMPLE = 175ksps l 2 2.7 mW TIMING CHARACTERISTICS The l denotes the specifications which apply over the full operating temperaturerange, otherwise specifications are at TA = 25°C. (Note 5)LTC1863L/LTC1867L/LTC1867LASYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS fSAMPLE Maximum Sampling Frequency l 175 kHz tCONV Conversion Time l 3.2 3.7 µs tACQ Acquisition Time l 2.01 1.68 µs fSCK SCK Frequency 20 MHz t1 CS/CONV High Time Short CS/CONV Pulse Mode l 40 100 ns t2 SDO Valid After SCK↓ CL = 25pF (Note 11) l 22 47 ns t3 SDO Valid Hold Time After SCK↓ CL = 25pF l 5 17 ns t4 SDO Valid After CS/CONV↓ CL = 25pF l 20 40 ns t5 SDI Setup Time Before SCK↑ l 15 –6 ns t6 SDI Hold Time After SCK↑ l 15 6 ns t7 SLEEP Mode Wake-Up Time CREFCOMP = 10µF, CVREF = 2.2µF 80 ms t8 Bus Relinquish Time After CS/CONV↑ CL = 25pF l 30 50 ns Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 3: When these pin voltages are taken below GND or above VDD, they may cause permanent damage to the device. Exposure to any Absolute will be clamped by internal diodes. This product can handle input currents Maximum Rating condition for extended periods may affect device up to 100mA without latchup. reliability and lifetime. Note 2: All voltage values are with respect to GND (unless otherwise noted). 1863l7lfe 4 For more information www.linear.com/LTC1863L Document Outline Description Absolute Maximum Ratings Pin Configuration Typical Performance Characteristics Pin Functions Package Description Related Parts
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