Datasheet

LTC2991
5
2991fd
For more information www.linear.com/LTC2991
Typical perForMance characTerisTics
T
A
= 25°C, V
CC
= 3.3V, unless otherwise noted.
T
INTERNAL
Error
Remote Diode Error with LTC2991
at 25°C
Remote Diode Error with LTC2991
at Same Temperature as Diode
Supply Current vs TemperatureShutdown Current vs Temperature
Measurement Delay Variation
vs T Normalized to 3.3V, 25°C
V
CC
TUE Single-Ended VX TUE Differential Voltage TUE
T
AMB
(°C)
–50
I
CC
(µA)
2.0
2.5
3.0
25 50 75 100 125
2991 G01
1.5
1.0
–25 0 150
0.5
0
3.5
V
CC
= 5V
V
CC
= 3.3V
T
AMB
(°C)
–50
I
CC
(µA)
1050
1100
1150
25 50 75 100 125
2991 G02
–25 0 150
1000
950
1200
V
CC
= 5V
V
CC
= 3.3V
T
AMB
(°C)
–50
MEASUREMENT DELAY VARIATION (%)
1
2
3
25 50 75 100 125
2991 G03
–25 0 150
0
–1
4
V
CC
= 5V
V
CC
= 3.3V
T
AMB
(°C)
–50
V
CC
TUE (%)
0
25 50 75 100 125
2991 G04
–25 0 150
–0.25
–0.50
0.25
T
AMB
(°C)
–50
VX TUE (%)
0
0.25
25 50 75 100 125
2991 G05
–25 0 150
–0.25
–0.50
0.50
T
AMB
(°C)
–50
V
DIFF
TUE (%)
0
25 50 75 100 125
2991 G06
–25 0 150
–0.25
–0.50
0.25
T
AMB
(°C)
–50
ERROR (°C)
1.0
1.5
25 50 75 100 125
2991 G07
0.5
0
–25 0 150
–0.5
–1.0
2.0
BATH TEMPERATURE (°C)
–50
LTC2991 T
RX
ERROR (°C)
0.2
0.4
25 50 75 100 125
2991 G08
0
–0.2
–25 0 150
–0.4
–0.6
0.6
T
AMB
(°C)
–50
LTC2991 T
RX
ERROR (DEG)
0.25
0.50
0.75
25 50 75 100 125
2991 G09
–0.25
0
–25 0 150
–0.50
–1.00
–0.75
1.00