Datasheet LTC2421, LTC2422 (Analog Devices) - 3

LTC2421/LTC2422
U U U U A ALOG I PUT A D REFERE CE The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VREF = FSSET – ZSSET. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range (Note 14) ● ZSSET – 0.12VREF FSSET + 0.12VREF V FSSET Full-Scale Set Range ● 0.1 + ZSSET VCC V ZSSET Zero-Scale Set Range ● 0 FSSET – 0.1 V CS(IN) Input Sampling Capacitance 1 pF CS(REF) Reference Sampling Capacitance 1.5 pF IIN(LEAK) Input Leakage Current CS = VCC ● –100 1 100 nA IREF(LEAK) Reference Leakage Current VREF = 2.5V, CS = VCC ● – 100 1 100 nA
U U DIGITAL I PUTS A D DIGITAL OUTPUTS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage 2.7V ≤ VCC ≤ 5.5V ● 2.5 V CS, FO 2.7V ≤ VCC ≤ 3.3V 2.0 V VIL Low Level Input Voltage 4.5V ≤ VCC ≤ 5.5V ● 0.8 V CS, FO 2.7V ≤ VCC ≤ 5.5V 0.6 V VIH High Level Input Voltage 2.7V ≤ VCC ≤ 5.5V (Note 9) ● 2.5 V SCK 2.7V ≤ VCC ≤ 3.3V (Note 9) 2.0 V VIL Low Level Input Voltage 4.5V ≤ VCC ≤ 5.5V (Note 9) ● 0.8 V SCK 2.7V ≤ VCC ≤ 5.5V (Note 9) 0.6 V IIN Digital Input Current 0V ≤ VIN ≤ VCC ● –10 10 µA CS, FO IIN Digital Input Current 0V ≤ VIN ≤ VCC (Note 9) ● –10 10 µA SCK CIN Digital Input Capacitance 10 pF CS, FO CIN Digital Input Capacitance (Note 9) 10 pF SCK VOH High Level Output Voltage IO = – 800µA ● VCC – 0.5 V SDO VOL Low Level Output Voltage IO = 1.6mA ● 0.4 V SDO VOH High Level Output Voltage IO = – 800µA (Note 10) ● VCC – 0.5 V SCK VOL Low Level Output Voltage IO = 1.6mA (Note 10) ● 0.4 V SCK IOZ High-Z Output Leakage ● –10 10 µA SDO
W U POWER REQUIRE E TS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC Supply Voltage ● 2.7 5.5 V ICC Supply Current Conversion Mode CS = 0V (Note 12) ● 200 300 µA Sleep Mode CS = VCC (Note 12) ● 20 30 µA 24212f 3