4
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
+
= 3V and V
–
= GND = 0V unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply
V
+
Supply Voltage Range ● 211V
I
CC
Supply Current IN
+
= IN
–
+ 80mV LTC1440 0°C ≤ T
A
≤ 70°C ● 2 3.9 µA
HYST = REF (LTC1440/LTC1442) –40°C ≤ T
A
≤ 85°C ● 4.3 µA
LTC1441
● 3.5 5.7 µA
LTC1442 ● 3.5 5.7 µA
Comparator
V
OS
Comparator Input Offset Voltage V
CM
= 1.5V ● ±3 ±10 mV
I
IN
Input Leakage Current (IN
+
, IN
–
)V
IN
+
= V
IN
–
= 1.5V ● ±0.01 ±1nA
Input Leakage Current (HYST) ● ±0.02 ±1nA
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 14 µs
Overdrive = 100mV 5 µs
V
OH
Output High Voltage I
O
= – 8mA ● V
+
– 0.4V V
Comparator
V
OL
Output Low Voltage I
O
= 0.8mA 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 1.182 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) ● 60 120 µA
I
SINK
Reference Output Sink Current ∆V
REF
≤ 2.5mV (LTC1442) 10 20 µA
∆V
REF
Reference Source Current 0 ≤ I
SOURCE
≤ 1mA (LTC1440) ● 0.8 5.5 mV
Reference Sink Current 0 ≤ I
SINK
≤ 10µA (LTC1440) 0.5 1.5 mV
● 5mV
NOISE Voltage Noise 100Hz to 100kHz 100 µV
RMS
