LTC1443/LTC1444/LTC1445
4
144345fe
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= 5V, V
–
= GND = 0V, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply
V
+
Supply Voltage Range
l
2.0 11.0 V
I
CC
Supply Current IN
+
= IN
–
= 80mV, HYST = REF
l
5 8 µA
Comparator
V
OS
Comparator Input Offset Voltage V
CM
= 1.5V
l
±3.0 ±10.0 mV
I
IN
Input Leakage Current (IN
+
, IN
–
) V
IN
+
= V
IN
–
= 1.5V
l
±0.01 ±1.0 nA
Input Leakage Current (HYST) LTC1444/LTC1445
l
±0.02 ±1.0 nA
V
CM
Comparator Input Common Mode Range
l
V
–
V
+
– 1.3V V
CMRR Common Mode Rejection Ratio V
–
to (V
+
– 1.3V) 0.1 1.0 mV/V
PSRR Power Supply Rejection Ratio V
+
= 2V to 11V 0.1 1.0 mV/V
Noise Voltage Noise 100Hz to 100kHz 100 µV
RMS
V
HYST
Hysteresis Input Voltage Range LTC1444, LTC1445
l
REF – 50mV REF V
t
PD
Propagation Delay Overdrive = 10mV, C
OUT
= 100pF
Overdrive = 100mV, C
OUT
= 100pF
14
5
µs
µs
V
OH
Output High Voltage I
O
= –10mA; LTC1443/LTC1445
l
V
+
– 0.4V V
V
OL
Output Low Voltage I
O
= 0.8mA; LTC1443
I
O
= 0.8mA; LTC1444/LTC1445
l
l
GND + 0.4V
V
–
+ 0.4V
V
V
Reference
V
REF
Reference Voltage No Load, LTC1443 C Temp Range
l
1.170 1.182 1.194 V
I Temp Range
l
1.164 1.200 V
No Load, LTC1444/
LTC1445
C Temp Range
l
1.209 1.221 1.233 V
I Temp Range
l
1.203 1.239 V
I
SOURCE
Reference Output Source Current ∆V
REF
≤ 1mV
l
60 120 µA
I
SINK
Reference Output Sink Current ∆V
REF
≤ 2.5mV
∆V
REF
≤ 5mV
l
10
10
15
15
µA
µA
Noise Noise Voltage 100Hz to 100kHz 100 µV
RMS
The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
+
= 3V, 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
V
OH
Output High Voltage I
O
= –15mA; LTC1443/LTC1445
l
V
+
– 0.4V V
V
OL
Output Low Voltage I
O
= 1.8mA; LTC1443
I
O
= 1.8mA; LTC1444/LTC1445
l
l
GND + 0.4V
V
–
+ 0.4V
V
V
Reference
V
REF
Reference Voltage No Load, LTC1443 C Temp Range
l
1.170 1.182 1.194 V
I Temp Range
l
1.164 1.200 V
No Load, LTC1444/
LTC1445
C Temp Range
l
1.209 1.221 1.233 V
I Temp Range
l
1.203 1.239 V
I
SOURCE
Reference Output Source Current ∆V
REF
≤ 1mV
l
100 200 µA
I
SINK
Reference Output Sink Current ∆V
REF
≤ 2.5mV
∆V
REF
≤ 5mV
l
10
10
15
15
µA
µA
Noise Voltage Noise 100Hz to 100kHz 100 µV
RMS
