Datasheet LTC1443, LTC1444, LTC1445 (Analog Devices) - 7

LTC1443/LTC1444/LTC1445
pin FuncTions
LTC1443 LTC1444/LTC1445 1 OUT B OUT C 16 1 OUT B OUT C 16 2 OUT A OUT D 15 2 OUT A OUT D 15 3 14 3 14 V+ GND V+ HYST – + – + – + – + 4 IN A– IN D+ 13 4 IN A– IN D+ 13 5 IN A+ IN D– 12 5 IN A+ IN D– 12 – + – + – + – + 6 IN B – IN C+ 11 6 IN B – IN C+ 11 7 IN B+ IN C– 10 7 IN B+ IN C– 10 1.2V 1.2V 8 REF V– 9 + – 8 REF V– 9 + – 144345 PF
OUT B (Pin 1):
Comparator B Output. (Open-drain output
IN C– (Pin10):
Inverting Input of Comparator C. Input for LTC1444). Output can source up to 40mA (LTC1443, common mode range from V– to V+ – 1.3V. Input current LTC1445) and sink 5mA. typically 10pA at 25°C.
OUT A (Pin 2):
Comparator A Output. (Open-drain output
IN C+ (Pin 11):
Noninverting Input of Comparator C. Input for LTC1444). Output can source up to 40mA (LTC1443, common mode range from V– to V+ – 1.3V. Input current LTC1445) and sink 5mA. typically 10pA at 25°C.
V+ (Pin 3):
Positive Supply.
IN D– (Pin 12):
Inverting Input of Comparator D. Input common mode range from V– to V+ – 1.3V. Input current
IN A– (Pin 4):
Inverting Input of Comparator A. Input typically 10pA at 25°C. common mode range from V– to V+ – 1.3V. Input current typically 10pA at 25°C.
IN D+ (Pin 13):
Noninverting Input of Comparator D. Input common mode range from V– to V+ – 1.3V. Input current
IN A+ (Pin 5):
Noninverting Input of Comparator A. Input typically 10pA at 25°C. common mode range from V– to V+ – 1.3V. Input current typically 10pA at 25°C.
GND (Pin 14):
LTC1443 Ground. Connect to V– for single supply operation.
IN B– (Pin 6):
Inverting Input of Comparator B. Input common mode range from V– to V+ – 1.3V. Input current
HYST (Pin 14):
LTC1444/LTC1445 Hysteresis Input. Con- typically 10pA at 25°C. nect to REF if not used. Input voltage range is from VREF to VREF – 50mV.
IN B+ (Pin 7):
Noninverting Input of Comparator B. Input common mode range from V– to V+ – 1.3V. Input current
OUT D (Pin 15):
Comparator D Output. (Open-drain output typically 10pA at 25°C. for LTC1444). Output can source up to 40mA (LTC1443, LTC1445) and sink 5mA.
REF (Pin 8):
Reference Output. With respect to V–. Can source up to 200µA and sink 15µA at 25°C. Drive 0.01µF
OUT C (Pin 16):
Comparator C Output. (Open-drain output bypass capacitor without oscillation. for LTC1444). Output can source up to 40mA (LTC1443, LTC1445) and sink 5mA.
V– (Pin 9):
Negative Supply. Connect to ground for single
Exposed Pad (Pin 17, DFN Package):
This pin is internally supply operation on LTC1443. connected to V–. Connection is optional, but will improve thermal dissipation. 144345fe 7 Document Outline Features Applications Description Absolute Maximum Ratings Typical Application Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts