
LT1720/LT1721
3
17201fc
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Supply Voltage
l
2.7
6
V
ICC
Supply Current (Per Comparator)
VCC = 5V
VCC = 3V
l
4
3.5
7
6
mA
VCMR
Common Mode Voltage Range
(Note 2)
l
–0.1
VCC – 1.2
V
VTRIP+
Input Trip Points
(Note 3)
l
–2.0
–3.0
5.5
6.5
mV
VTRIP–
Input Trip Points
(Note 3)
l
–5.5
–6.5
2.0
3.0
mV
VOS
Input Offset Voltage
(Note 3)
l
1.0
3.0
4.5
mV
VHYST
Input Hysteresis Voltage
(Note 3)
l
2.0
3.5
7.0
mV
ΔVOS/ΔT
Input Offset Voltage Drift
l
10
μV/°C
IB
Input Bias Current
l
–6
0
μA
IOS
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
AV
Voltage Gain
(Note 6)
∞
VOH
Output High Voltage
ISOURCE = 4mA, VIN = VTRIP+ + 10mV
l VCC – 0.4
V
VOL
Output Low Voltage
ISINK = 10mA, VIN = VTRIP– – 10mV
l
0.4
V
tPD20
Propagation Delay
VOVERDRIVE = 20mV (Note 7)
l
4.5
6.5
8.0
ns
tPD5
Propagation Delay
VOVERDRIVE = 5mV (Notes 7, 8)
l
710
13
ns
The
l denotes specications that apply over the full operating temperature
range, otherwise specications are at TA = 25°C. VCC = 5V, VCM = 1V, COUT = 10pF, VOVERDRIVE = 20mV, unless otherwise specied.
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 specied with wider operating temperature ranges. *The temperature grade is identied by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specications, go to: http://www.linear.com/tapeandreel/