LTC2452 TiMing characTerisTics The l denotes the specifications which apply over the full operating temperaturerange,otherwise specifications are at TA = 25°C.SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS tCONV Conversion Time l 13 16.6 23 ms fSCK SCK Frequency Range l 2 MHz tlSCK SCK Low Period l 250 ns thSCK SCK High Period l 250 ns t1 CS Falling Edge to SDO Low-Z (Notes 7, 8) l 0 100 ns t2 CS Rising Edge to SDO Hi-Z (Notes 7, 8) l 0 100 ns t3 CS Falling Edge to SCK Falling Edge l 100 ns tKQ SCK Falling Edge to SDO Valid (Note 7) l 0 100 ns Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 5: CS = VCC. A positive current is flowing into the DUT pin. may cause permanent damage to the device. Exposure to any Absolute Note 6: SCK = VCC or GND. SDO is high impedance. Maximum Rating condition for extended periods may affect device Note 7: See Figure 4. reliability and lifetime. Note 8: See Figure 5. Note 2. All voltage values are with respect to GND. VCC = 2.7V to 5.5V Note 9: Input sampling current is the average input current drawn from the unless otherwise specified. input sampling network while the LTC2452 is actively sampling the input. VREFCM = VREF/2, FS = VREF Note 10: A positive current is flowing into the DUT pin. V + – + – IN = VIN – VIN , –VREF ≤ VIN ≤ VREF; VINCM = (VIN + VIN )/2. Note 3. Guaranteed by design, not subject to test. Note 4. Integral nonlinearity is defined as the deviation of a code from a straight line passing through the actual endpoints of the transfer curve. Guaranteed by design and test correlation. Typical perForMance characTerisTics (TA = 25°C, unless otherwise noted)Integral Nonlinearity, VCC = 5VIntegral Nonlinearity, VCC = 3VMaximum INL vs Temperature 3 3 3 2 2 2 1 TA = 90°C 1 1 V T CC = VREF = 5V, 4.1V, 3V A = –45°C, 25°C, 90°C 0 0 0 INL (LSB) TA = –45°C, 25°C INL (LSB) INL (LSB) –1 –1 –1 –2 –2 –2 –3 –3 –3 –5 –4 –3 –2 –1 0 1 2 3 4 5 –3 –2 –1 0 1 2 3 –50 –25 0 25 50 75 100 DIFFERENTIAL INPUT VOLTAGE (V) DIFFERENTIAL INPUT VOLTAGE (V) TEMPERATURE (°C) 2452 G01 2452 G02 2452 G03 2452fd 4 For more information www.linear.com/LTC2452
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