Datasheet

LT1720/LT1721
3
17201fc
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage
l
2.7 6 V
I
CC
Supply Current (Per Comparator) V
CC
= 5V
V
CC
= 3V
l
l
4
3.5
7
6
mA
mA
V
CMR
Common Mode Voltage Range (Note 2)
l
–0.1 V
CC
– 1.2 V
V
TRIP
+
Input Trip Points (Note 3)
l
–2.0
–3.0
5.5
6.5
mV
mV
V
TRIP
–
Input Trip Points (Note 3)
l
–5.5
–6.5
2.0
3.0
mV
mV
V
OS
Input Offset Voltage (Note 3)
l
1.0 3.0
4.5
mV
mV
V
HYST
Input Hysteresis Voltage (Note 3)
l
2.0 3.5 7.0 mV
ΔV
OS
/ΔT
Input Offset Voltage Drift
l
10 μV/°C
I
B
Input Bias Current
l
–6 0 μA
I
OS
Input Offset Current
l
0.6 μA
CMRR Common Mode Rejection Ratio (Note 4)
l
55 70 dB
PSRR Power Supply Rejection Ratio (Note 5)
l
65 80 dB
A
V
Voltage Gain (Note 6)
∞
V
OH
Output High Voltage I
SOURCE
= 4mA, V
IN
= V
TRIP
+
+ 10mV
l
V
CC
– 0.4 V
V
OL
Output Low Voltage I
SINK
= 10mA, V
IN
= V
TRIP
–
– 10mV
l
0.4 V
t
PD20
Propagation Delay V
OVERDRIVE
= 20mV (Note 7)
l
4.5 6.5
8.0
ns
ns
t
PD5
Propagation Delay V
OVERDRIVE
= 5mV (Notes 7, 8)
l
710
13
ns
ns
The l denotes specifi cations that apply over the full operating temperature
range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 5V, V
CM
= 1V, C
OUT
= 10pF, V
OVERDRIVE
= 20mV, unless otherwise specifi ed.
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1720CDD#PBF LT1720CDD#TRPBF LAAV
8-Lead (3mm × 3mm) Plastic DFN
0°C to 70°C
LT1720IDD#PBF LT1720IDD#TRPBF LAAV
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°C
LT1720CMS8#PBF LT1720CMS8#TRPBF LTDS 8-Lead Plastic MSOP 0°C to 70°C
LT1720IMS8#PBF LT1720IMS8#TRPBF LTACW 8-Lead Plastic MSOP –40°C to 85°C
LT1720CS8#PBF LT1720CS8#TRPBF 1720 8-Lead Plastic SO 0°C to 70°C
LT1720IS8#PBF LT1720IS8#TRPBF 1720I 8-Lead Plastic SO –40°C to 85°C
LT1721CGN#PBF LT1721CGN#TRPBF 1721 16-Lead Narrow Plastic SSOP 0°C to 70°C
LT1721IGN#PBF LT1721IGN#TRPBF 1721I 16-Lead Narrow Plastic SSOP –40°C to 85°C
LT1721CS#PBF LT1721CS#TRPBF 1721 16-Lead Plastic SO 0°C to 70°C
LT1721IS#PBF LT1721IS#TRPBF 1721I 16-Lead Plastic SO –40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi
cations, go to: http://www.linear.com/tapeandreel/