Datasheet

LTC2481
4
2481fc
ANALOG INPUT AND REFERENCE
The l 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
C
S
(IN
–
)IN
–
Sampling Capacitance 11 pF
C
S
(V
REF
)V
REF
Sampling Capacitance 11 pF
I
DC_LEAK
(IN
+
)IN
+
DC Leakage Current Sleep Mode, IN
+
= GND
l
–10 1 10 nA
I
DC_LEAK
(IN
–
)IN
–
DC Leakage Current Sleep Mode, IN
–
= GND
l
–10 1 10 nA
I
DC_LEAK
(V
REF
)REF
+
, REF
–
DC Leakage Current Sleep Mode, V
REF
= V
CC
l
–100 1 100 nA
I
2
C DIGITAL INPUTS AND DIGITAL OUTPUTS
The l denotes the specifi cations which apply over
the full operating temperature range, otherwise specifi cations are at T
A
= 25°C. (Notes 3, 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage
l
0.7V
CC
V
V
IL
Low Level Input Voltage
l
0.3V
CC
V
V
IL(CA1)
Low Level Input Voltage for Address Pin
l
0.05V
CC
V
V
IH(CA0/f0,CA1)
High Level Input Voltage for Address Pins
l
0.95V
CC
V
R
INH
Resistance from CA0/f
0
, CA1 to V
CC
to Set
Chip Address Bit to 1
l
10 k
R
INL
Resistance from CA1 to GND to Set Chip
Address Bit to 0
l
10 k
R
INF
Resistance from CA0/f
0
, CA1 to V
CC
or
GND to Set Chip Address Bit to Float
l
2 M
I
I
Digital Input Current
l
–10 10 µA
V
HYS
Hysteresis of Schmitt Trig ger Inputs (Note 5) 0.05V
CC
V
V
OL
Low Level Output Voltage SDA I = 3mA
l
0.4 V
t
OF
Output Fall Time from V
IHMIN
to V
ILMAX
Bus Load C
B
10pF to 400pF (Note 14)
l
20+0.1C
B
250 ns
t
SP
Input Spike Suppression
l
50 ns
I
IN
Input Leakage 0.1V
CC
≤ V
IN
≤ V
CC
l 1µA
C
I
Capacitance for Each I/O Pin
l
10 pF
C
B
Capacitance Load for Each Bus Line
l
400 pF
C
CAX
External Capacitive Load On-Chip Address
Pins (CA0/f
0
,CA1) for Valid Float
l
10 pF
V
IH(EXT,OSC)
High Level CA0/f
0
External Oscillator 2.7V ≤ V
CC
< 5.5V
l
V
CC
– 0.5V V
V
IL(EXT,OSC)
Low Level CA0/f
0
External Oscillator 2.7V ≤ V
CC
< 5.5V
l
0.5 V
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage
l
2.7 5.5 V
I
CC
Supply Current Conversion Mode (Note 11)
Sleep Mode (Note 11)
H-Grade
l
l
l
160
1
250
2
20
µA
µA
µA
POWER REQUIREMENTS
The l denotes the specifi cations which apply over the full operating temperature
range, otherwise specifi cations are at T
A
= 25°C. (Note 3)