Datasheet LTC2472 (Analog Devices) - 4

LTC2470/LTC2472
power requireMenTs The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC Supply Voltage l 2.7 5.5 V ICC Supply Current Conversion CS = GND (Note 6) LTC2472 l 3.5 5 mA Conversion CS = GND (Note 6) LTC2470 l 2.5 4 mA Nap CS = VCC (Note 6) l 800 1500 µA Sleep CS = VCC (Note 6) l 0.2 2 µA
DigiTal inpuTs anD DigiTal ouTpuTs The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage l VCC – 0.3 V VIL Low Level Input Voltage l 0.3 V IIN Digital Input Current l –10 10 µA CIN Digital Input Capacitance 10 pF VOH High Level Output Voltage IO = –800µA l VCC – 0.5 V VOL Low Level Output Voltage IO = 1.6mA l 0.4 V IOZ Hi-Z Output Leakage Current l –10 10 µA
TiMing characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
tCONV1 Conversion Time SPD = 0 l 3.2 4 4.8 ms tCONV2 Conversion Time SPD = 1 l 0.8 1 1.2 ms fSCK SCK Frequency Range l 2 MHz tlSCK SCK Low Period (Note 7) l 250 ns thSCK SCK High Period (Note 7) l 250 ns t1 CS Falling Edge to SDO Low Z (Note 7) l 0 100 ns t2 CS Rising Edge to SDO High Z (Note 7) l 0 100 ns t3 CS Falling Edge to SCK Falling Edge (Note 7) l 100 ns t4 SDI Setup Before SCK↑ (Notes 3, 7) l 100 ns t5 SDI Hold After SCK↑ (Notes 3, 7) 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 5. reliability and lifetime.
Note 8:
Input sampling current is the average input current drawn from
Note 2.
All voltage values are with respect to GND. VCC = 2.7V to 5.5V the input sampling network while the LTC2470/LTC2472 is actively unless otherwise specified. sampling the input. VREFCM = VREF/2, FS = VREF, –VREF ≤ VIN ≤ VREF
Note 9:
Temperature coefficient is calculated by dividing the maximum V + – + – IN = VIN – VIN , VINCM = (VIN + VIN )/2. (LTC2472) change in output voltage by the specified temperature range.
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. 24702fb 4 For more information www.linear.com/LTC2470 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Analog Inputs Power Requirements Digital Inputs and Digital Outputs Timing Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Revision History Typical Application Related Parts