Datasheet

3
LTC1440/LTC1441/LTC1442
144012fd
ELECTRICAL CHARACTERISTICS
The denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
+
= 5V and V
= GND = 0V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply
V
+
Supply Voltage Range 2.0 11.0 V
I
CC
Supply Current IN
+
= IN
+ 80mV LTC1440 0°C T
A
70°C 2.1 4.0 µA
HYST = REF (LTC1440/LTC1442) –40°C T
A
85°C 4.4 µA
LTC1441
3.5 5.7 µA
LTC1442 3.5 5.7 µA
Comparator
V
OS
Comparator Input Offset Voltage V
CM
= 2.5V ±3 ±10 mV
I
IN
Input Leakage Current (IN
+
, IN
)V
IN
+
= V
IN
= 2.5V ±0.01 ±1.0 nA
Input Leakage Current (HYST) ±0.02 ±1.0 nA
V
CM
Comparator Input Common V
V
+
– 1.3V V
Mode Range
CMRR Common Mode Rejection Ratio V
to V
+
– 1.3V 0.1 1 mV/V
PSRR Power Supply Rejection Ratio V
+
= 2V to 11V (LTC1441) 0.1 1 mV/V
V
+
= 2.5V to 11V (LTC1440/LTC1442) 0.1 1 mV/V
NOISE Voltage Noise 100Hz to 100kHz 100 µV
RMS
V
HYST
Hysteresis Input Voltage Range LTC1440/LTC1442 REF – 50mV REF V
t
PD
Propagation Delay C
OUT
= 100pF Overdrive = 10mV 15 µs
Overdrive = 100mV 8 µs
V
OH
Output High Voltage I
O
= – 13mA V
+
– 0.4V V
V
OL
Output Low Voltage I
O
= 1.8mA LTC1440 GND + 0.4V V
LTC1441/LTC1442 V
+ 0.4V V
Reference
V
REF
Reference Voltage No Load LTC1440/LTC1442
0°C T
A
70°C 1.170 1.194 V
–40°C T
A
85°C 1.164 1.200 V
LTC1440 (MSOP, DFN) 1.164 1.200 V
I
SOURCE
Reference Output Source Current V
REF
1mV (LTC1442) 100 µA
I
SINK
Reference Output Sink Current V
REF
2.5mV (LTC1442) 10 20 µA
V
REF
Reference Source Current 0 I
SOURCE
2mA (LTC1440) 0.8 5 mV
Reference Sink Current 0 I
SINK
10µA (LTC1440) 0.5 1.5 mV
5mV
NOISE Voltage Noise 100Hz to 100kHz 100 µV
RMS