Datasheet

LTC2492
4
2492fd
DIGITAL INPUTS AND DIGITAL OUTPUTS
The ● denotes the specifi cations which apply over the
full operating temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 3)
ANALOG INPUT AND REFERENCE
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IN
+
Absolute/Common Mode IN
+
Voltage
(IN
+
Corresponds to the Selected Positive Input Channel)
GND – 0.3V V
CC
+ 0.3V V
IN
–
Absolute/Common Mode IN
–
Voltage
(IN
–
Corresponds to the Selected Negative Input Channel)
GND – 0.3V V
CC
+ 0.3V V
V
IN
Input Differential Voltage Range (IN
+
– IN
–
)
●
–FS +FS V
FS Full Scale of the Differential Input (IN
+
– IN
–
)
●
0.5V
REF
V
LSB Least Signifi cant Bit of the Output Code
●
FS/2
24
REF
+
Absolute/Common Mode REF
+
Voltage
●
0.1 V
CC
V
REF
–
Absolute/Common Mode REF
–
Voltage
●
GND REF
+
– 0.1V V
V
REF
Reference Voltage Range (REF
+
– REF
–
)
●
0.1 V
CC
V
CS(IN
+
)IN
+
Sampling Capacitance 11 pF
CS(IN
–
)IN
–
Sampling Capacitance 11 pF
CS(V
REF
)V
REF
Sampling Capacitance 11 pF
I
DC_LEAK(IN
+
)
IN
+
DC Leakage Current Sleep Mode, IN
+
= GND
●
–10 1 10 nA
I
DC_LEAK(IN
–
)
IN
–
DC Leakage Current Sleep Mode, IN
–
= GND
●
–10 1 10 nA
I
DC_LEAK(REF
+
)
REF
+
DC Leakage Current Sleep Mode, REF
+
= V
CC
●
–100 1 100 nA
I
DC_LEAK(REF
–
)
REF
–
DC Leakage Current Sleep Mode, REF
–
= GND
●
–100 1 100 nA
t
OPEN
MUX Break-Before-Make 50 ns
QIRR MUX Off Isolation V
IN
= 2V
P-P
DC to 1.8MHz 120 dB
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage (CS, f
O
, SDI) 2.7V ≤ V
CC
≤ 5.5V
●
V
CC
– 0.5 V
V
IL
Low Level Input Voltage (CS, f
O
, SDI) 2.7V ≤ V
CC
≤ 5.5V (Note 18)
●
0.5 V
V
IH
High Level Input Voltage (SCK) 2.7V ≤ V
CC
≤ 5.5V (Notes 10, 15)
●
V
CC
– 0.5 V
V
IL
Low Level Input Voltage (SCK) 2.7V ≤ V
CC
≤ 5.5V (Notes 10, 15)
●
0.5 V
I
IN
Digital Input Current (CS, f
O
, SDI) 0V ≤ V
IN
≤ V
CC
●
–10 10 μA
I
IN
Digital Input Current (SCK) 0V ≤ V
IN
≤ V
CC
(Notes 10, 15)
●
–10 10 μA
C
IN
Digital Input Capacitance (CS, f
O
, SDI) 10 pF
C
IN
Digital Input Capacitance (SCK) (Notes 10, 15) 10 pF
V
OH
High Level Output Voltage (SDO) I
O
= –800μA
●
V
CC
– 0.5 V
V
OL
Low Level Output Voltage (SDO) I
O
= 1.6mA
●
0.4 V
V
OH
High Level Output Voltage (SCK) I
O
= –800μA (Notes 10, 17)
●
V
CC
– 0.5 V
V
OL
Low Level Output Voltage (SCK) I
O
= 1.6mA (Notes 10, 17)
●
0.4 V
I
OZ
Hi-Z Output Leakage (SDO)
●
–10 10 μA
POWER REQUIREMENTS
The ● denotes the specifi cations which apply over the full operating temperature
range, otherwise specifi cations are at T
A
= 25°C. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage
●
2.7 5.5 V
I
CC
Supply Current Conversion Current (Note 12)
Temperature Measurement (Note 12)
Sleep Mode (Note 12)
●
●
●
160
200
1
275
300
2
μA
μA
μA