LTC1445 Linear Technology, LTC1445 Datasheet - Page 6

• Manufacturer Part Number: LTC1445
• Description: Ultralow Power Quad Comparators with Reference
• Manufacturer: Linear Technology

LTC1443/LTC1444/LTC1445
PI FU CTIO S
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
IN A
common mode range from V
typically 10pA at 25 C.
IN A
common mode range from V
typically 10pA at 25 C.
IN B
common mode range from V
typically 10pA at 25 C.
IN B
common mode range from V
typically 10pA at 25 C.
REF (Pin 8): Reference Output. With respect to V
source up to 200 A and sink 15 A at 25 C. Drive 0.01 F
bypass capacitor without oscillation.
6
+
U
(Pin 3): Positive Supply.
+
+
–
–
(Pin 5): Noninverting Input of Comparator A. Input
(Pin 7): Noninverting Input of Comparator B. Input
(Pin 4): Inverting Input of Comparator A. Input
(Pin 6): Inverting Input of Comparator B. Input
1
2
3
4
5
6
7
8
OUT B
OUT A
V
IN A
IN A
IN B
IN B
REF
U
+
–
+
+
–
–
–
U
+
+
1.182V
LTC1443
–
–
–
–
to V
to V
to V
to V
–
–
+
+
+
+
– 1.3V. Input current
– 1.3V. Input current
– 1.3V. Input current
– 1.3V. Input current
+
+
1443/44/45 • PD01
OUT C
OUT D
IN D
IN D
IN C
IN C
GND
V
+
–
+
–
–
16
15
14
13
12
11
10
9
–
. Can
V
supply operation on LTC1443.
IN C
common mode range from V
typically 10pA at 25 C.
IN C
common mode range from V
typically 10pA at 25 C.
IN D
common mode range from V
typically 10pA at 25 C.
IN D
common mode range from V
typically 10pA at 25 C.
GND (Pin 14): LTC1443 Ground. Connect to V
supply operation.
HYST (Pin 14): LTC1444/LTC1445 Hysteresis Input. Con-
nect to REF if not used. Input voltage range is from V
to V
–
(Pin 9): Negative Supply. Connect to ground for single
REF
+
+
–
–
(Pin 11): Noninverting Input of Comparator C. Input
(Pin 13): Noninverting Input of Comparator D. Input
(Pin 12): Inverting Input of Comparator D. Input
(Pin10): Inverting Input of Comparator C. Input
1
2
3
4
5
6
7
8
– 50mV.
OUT B
OUT A
V
IN A
IN A
IN B
IN B
REF
+
–
+
+
–
–
–
+
+
LTC1444/LTC1445
1.221V
–
–
–
–
to V
to V
to V
to V
+
+
+
+
–
–
– 1.3V. Input current
– 1.3V. Input current
– 1.3V. Input current
– 1.3V. Input current
+
+
1443/44/45 • PD02
OUT C
OUT D
HYST
IN D
IN D
IN C
IN C
–
V
+
–
+
–
–
for single
16
15
14
13
12
11
10
9
REF