Datasheet

6
LTC1443/LTC1444/LTC1445
144345fc
OUT B (Pin 1): Comparator B Output. (Open-drain output
for LTC1444). Output can source up to 40mA (LTC1443,
LTC1445) and sink 5mA.
OUT A (Pin 2): Comparator A Output. (Open-drain output
for LTC1444). Output can source up to 40mA (LTC1443,
LTC1445) and sink 5mA.
V
+
(Pin 3): Positive Supply.
IN A
–
(Pin 4): Inverting Input of Comparator A. Input
common mode range from V
–
to V
+
– 1.3V. Input current
typically 10pA at 25°C.
IN A
+
(Pin 5): Noninverting Input of Comparator A. Input
common mode range from V
–
to V
+
– 1.3V. Input current
typically 10pA at 25°C.
IN B
–
(Pin 6): Inverting Input of Comparator B. Input
common mode range from V
–
to V
+
– 1.3V. Input current
typically 10pA at 25°C.
Comparator Response Time at
Low Supply Voltage
Supply Current vs
Comparator Input Frequency
INPUT FREQUENCY (Hz)
1
SUPPLY CURRENT (µA)
10000
1000
100
10
1
100 10k 100k10 1k
LTC1329 • TPC15
C
OUT
= 55pF
C
OUT
= 15pF
C
OUT
= 5pF
SUPPLY VOLTAGE (V)
1
RESPONSE TIME (µs)
10000
1000
100
10
1
1.2 1.4 1.61.1 1.3 1.5
LTC1443/44/45 • TPC16
20mV OVERDRIVE
100mV OVERDRIVE
TYPICAL PERFOR A CE CHARACTERISTICS
UW
–
+
–
+
OUT B
OUT A
V
+
IN A
–
IN A
+
IN B
–
IN B
+
REF
OUT C
OUT D
GND
IN D
+
IN D
–
IN C
+
IN C
–
V
–
+
–
+
–
LTC1443
1.182V
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1443/44/45 • PD01
–
+
–
+
OUT B
OUT A
V
+
IN A
–
IN A
+
IN B
–
IN B
+
REF
OUT C
OUT D
HYST
IN D
+
IN D
–
IN C
+
IN C
–
V
–
+
–
+
–
LTC1444/LTC1445
1.221V
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1443/44/45 • PD02
UU
U
PI FU CTIO S