LTC1440 Datasheet, PDF (6/12 Pages) Linear Technology – Ultralow Power Single/Dual Comparator with Reference

LTC1440/LTC1441/LTC1442
PIN FUNCTIONS
1
GND
2 V^–
3 IN⁺
LTC1440
+
–
OUT 8
V^{+ 7}
REF ₆
1 OUT A LTC1441 OUT B 8
2 _V–
A
+–
3 IN A⁺
V^{+ 7}
B
–+
IN B⁺ 6
1 OUT A LTC1442 OUT B 8
2 _V–
A
+–
3 IN A⁺
B
V^{+ 7}
–+
REF 6
4 IN^–
HYST ⁵
4 IN A^–
IN B^– ₅
4 IN B^–
V^–
HYST 5
LTC1440
GND (Pin 1): Ground. Connect to V ^– for single supply
operation.
V ^– (Pin 2): Negative Supply. Connect to ground for single
supply operation. Potential should be more negative than
GND.
IN⁺ (Pin 3): Noninverting Comparator Input. Input com-
mon mode range from V ^– to V ⁺ –1.3V. Input current
typically 10pA at 25°C.
IN ^– (Pin 4): Inverting Comparator Input. Input common
mode range from V ^– to V ⁺ –1.3V. Input current typically
10pA at 25°C.
HYST (Pin 5): Hysteresis Input. Connect to REF if not
used. Input voltage range is from V_REF to V_REF – 50mV.
REF (Pin 6): Reference Output. 1.182V with respect
to V ^–. Can source up to 200µA and sink 15µA at 25°C.
Drive 0.01µF bypass capacitor without oscillation.
V ⁺ (Pin 7): Positive Supply. 2V to 11V.
OUT (Pin 8): Comparator CMOS Output. Swings from
GND to V ⁺. Output can source up to 40mA and sink 5mA.
LTC1441
OUT A (Pin 1): Comparator A CMOS Output. Swings from
V ^– to V ⁺. Output can source up to 40mA and sink 5mA.
V ^– (Pin 2): Negative Supply.
IN A⁺ (Pin 3): Noninverting Input of Comparator A. Input
common mode range from V ^– to V ⁺ –1.3V. Input current
typically 10pA at 25°C.
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.
1440/1/2 PD
IN B ^– (Pin 5): Inverting Input of Comparator B. Input
common mode range from V ^– to V ⁺ –1.3V. Input current
typically 10pA at 25°C.
IN B ⁺ (Pin 6): Noninverting Input of Comparator B. Input
common mode range from V ^– to V ⁺ –1.3V. Input current
typically 10pA at 25°C.
V ⁺ (Pin 7): Positive Supply. 2V to 11V.
OUT B (Pin 8): Comparator B CMOS Output. Swings from
V ^– to V ⁺. Output can source up to 40mA and sink 5mA.
LTC1442
OUT A (Pin 1): Comparator A CMOS Output. Swings from
V ^– to V ⁺. Output can source up to 40mA and sink 5mA.
V ^– (Pin 2): Negative Supply.
IN A⁺ (Pin 3): 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 4): Inverting Input of Comparator B. Input
common mode range from V ^– to V ⁺ –1.3V. Input current
typically 10pA at 25°C.
HYST (Pin 5): Hysteresis Input. Connect to REF if not
used. Input voltage range is from V_REF to V_REF – 50mV.
REF (Pin 6): Reference Output. 1.182V with respect
to V ^–. Can source up to 200µA and sink 15µA at 25°C.
Drive 0.01µF bypass capacitor without oscillation.
V ⁺ (Pin 7): Positive Supply. 2V to 11V.
OUT B (Pin 8): Comparator B CMOS Output. Swings from
V ^– to V ⁺. Output can source up to 40mA and sink 5mA.
6