Datasheet

3
LTC1443/LTC1444/LTC1445
144345fc
The ● 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.
ELECTRICAL CHARACTERISTICS
The ● 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.
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 ● 5.5 8.5 µA
HYST = REF (LTC1444/LTC1445)
Comparator
V
OS
Comparator Input Offset Voltage V
CM
= 2.5V ● ±3.0 ±10.0 mV
I
IN
Input Leakage Current (IN
+
, IN
–
)V
IN
+
= V
IN
–
= 2.5V ● ±0.01 ±1.0 nA
Input Leakage Current (HYST) LTC1444/LTC1445 ● ±0.02 ±1.0 nA
V
CM
Comparator Input Common Mode Range ● 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 20 µV
RMS
V
HYST
Hysteresis Input Voltage Range LTC1444, LTC1445 ● REF – 50mV REF V
t
PD
Propagation Delay Overdrive = 10mV, C
OUT
= 100pF 12 µs
Overdrive = 100mV, C
OUT
= 100pF 4 µs
V
OH
Output High Voltage I
O
= –15mA; LTC1443/LTC1445 ● V
+
– 0.4V V
V
OL
Output Low Voltage I
O
= 1.8mA; LTC1443 ● GND + 0.4V V
I
O
= 1.8mA; LTC1444/LTC1445 ● V
–
+ 0.4V V
Reference
V
REF
Reference Voltage No Load, LTC1443 C Temp Range ● 1.170 1.182 1.194 V
I Temp Range ● 1.164 1.200 V
No Load, LTC1444/ C Temp Range ● 1.209 1.221 1.233 V
LTC1445
I Temp Range
● 1.203 1.239 V
I
SOURCE
Reference Output Source Current ∆V
REF
≤ 1mV ● 100 200 µA
I
SINK
Reference Output Sink Current ∆V
REF
≤ 2.5mV 10 15 µA
∆V
REF
≤ 5mV ● 10 15 µA
Noise Voltage Noise 100Hz to 100kHz 100 µV
RMS
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, HYST = REF ● 58 µA
Comparator
V
OS
Comparator Input Offset Voltage V
CM
= 1.5V ● ±3.0 ±10.0 mV
I
IN
Input Leakage Current (IN
+
, IN
–
)V
IN
+
= V
IN
–
= 1.5V ● ±0.01 ±1.0 nA
Input Leakage Current (HYST) LTC1444/LTC1445 ● ±0.02 ±1.0 nA
V
CM
Comparator Input Common Mode Range ● 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 ● REF – 50mV REF V
t
PD
Propagation Delay Overdrive = 10mV, C
OUT
= 100pF 14 µs
Overdrive = 100mV, C
OUT
= 100pF 5 µs
V
OH
Output High Voltage I
O
= –10mA, LTC1443/LTC1445 ● V
+
– 0.4V V
V
OL
Output Low Voltage I
O
= 0.8mA; LTC1443 ● GND + 0.4V V
I
O
= 0.8mA; LTC1444/LTC1445 ● V
–
+ 0.4V V