Datasheet

3
LTC2421/LTC2422
24212f
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage 2.7V ≤ V
CC
≤ 5.5V ● 2.5 V
CS, F
O
2.7V ≤ V
CC
≤ 3.3V 2.0 V
V
IL
Low Level Input Voltage 4.5V ≤ V
CC
≤ 5.5V ● 0.8 V
CS, F
O
2.7V ≤ V
CC
≤ 5.5V 0.6 V
V
IH
High Level Input Voltage 2.7V ≤ V
CC
≤ 5.5V (Note 9) ● 2.5 V
SCK 2.7V ≤ V
CC
≤ 3.3V (Note 9) 2.0 V
V
IL
Low Level Input Voltage 4.5V ≤ V
CC
≤ 5.5V (Note 9) ● 0.8 V
SCK 2.7V ≤ V
CC
≤ 5.5V (Note 9) 0.6 V
I
IN
Digital Input Current 0V ≤ V
IN
≤ V
CC
● –10 10 µA
CS, F
O
I
IN
Digital Input Current 0V ≤ V
IN
≤ V
CC
(Note 9) ● –10 10 µA
SCK
C
IN
Digital Input Capacitance 10 pF
CS, F
O
C
IN
Digital Input Capacitance (Note 9) 10 pF
SCK
V
OH
High Level Output Voltage I
O
= –800µA ● V
CC
– 0.5 V
SDO
V
OL
Low Level Output Voltage I
O
= 1.6mA ● 0.4 V
SDO
V
OH
High Level Output Voltage I
O
= –800µA (Note 10) ● V
CC
– 0.5 V
SCK
V
OL
Low Level Output Voltage I
O
= 1.6mA (Note 10) ● 0.4 V
SCK
I
OZ
High-Z Output Leakage ● –10 10 µA
SDO
DIGITAL I PUTS A D DIGITAL OUTPUTS
UU
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage ● 2.7 5.5 V
I
CC
Supply Current
Conversion Mode CS = 0V (Note 12)
● 200 300 µA
Sleep Mode CS = V
CC
(Note 12) ● 20 30 µA
POWER REQUIRE E TS
WU
The ● denotes specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
The ● denotes specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Voltage Range (Note 14) ● ZS
SET
– 0.12V
REF
FS
SET
+ 0.12V
REF
V
FS
SET
Full-Scale Set Range ● 0.1 + ZS
SET
V
CC
V
ZS
SET
Zero-Scale Set Range ● 0FS
SET
– 0.1 V
C
S(IN)
Input Sampling Capacitance 1 pF
C
S(REF)
Reference Sampling Capacitance 1.5 pF
I
IN(LEAK)
Input Leakage Current CS = V
CC
● –100 1 100 nA
I
REF(LEAK)
Reference Leakage Current V
REF
= 2.5V, CS = V
CC
● –100 1 100 nA
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
REF
= FS
SET
– ZS
SET
. (Note 3)
A ALOG I PUT A D REFERE CE
UU
U
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