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LT1460EIN8-2.5-PBF Datasheet(PDF) 18 Page - Linear Technology

Part # LT1460EIN8-2.5-PBF
Description  Micropower Precision Series Reference Family
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1460EIN8-2.5-PBF Datasheet(HTML) 18 Page - Linear Technology

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LT1460

1460fc
Table 1. Maximum Output Capacitance for LT1460S3
VOLTAGE
OPTION
IOUT = 100µA IOUT = 1mA IOUT = 10mA IOUT = 20mA
2.5V
>10µF
>10µF
2µF
0.68µF
3V
>10µF
>10µF
2µF
0.68µF
3.3V
>10µF
>10µF
1µF
0.68µF
5V
>10µF
>10µF
1µF
0.68µF
10V
>10µF
1µF
0.15µF
0.1µF
Long-Term Drift
Long-termdriftcannotbeextrapolatedfromaccelerated
hightemperaturetesting.Thiserroneoustechniquegives
drift numbers that are wildly optimistic. The only way
long-term drift can be determined is to measure it over
the time interval of interest. The LT1460S3 long-term
drift data was taken on over 100 parts that were soldered
into PC boards similar to a “real world” application. The
boards were then placed into a constant temperature oven
with TA = 30°C, their outputs were scanned regularly and
measured with an 8.5 digit DVM. Figure 16 shows typical
long-term drift of the LT1460S3s.
Hysteresis
HysteresisdatashowninFigure17andFigure18represents
the worst-case data taken on parts from 0°C to 70°C and
from –40°C to 85°C. The device is capable of dissipating
relativelyhighpower,i.e.,fortheLT1460S3-2.5,PD=17.5V
• 20mA = 350mW. The thermal resistance of the SOT-23
package is 325°C/W and this dissipation causes a 114°C
internal rise producing a junction temperature of TJ=25°C
+ 114°C = 139°C. This elevated temperature will cause
the output to shift due to thermal hysteresis. For highest
performance in precision applications, do not let the
LT1460S3’s junction temperature exceed 85°C.
Figure 16. Typical Long-Term Drift
Figure 17. 0°C to 70°C Hysteresis
Figure 18. –40°C to 85°C Hysteresis
HOURS
–150
–50
50
150
–100
0
100
200
400
600
800
1460 F16
1000
100
0
300
500
700
900
HYSTERESIS (ppm)
–240
–160
–80
0
8
70°C TO 25°C
0°C TO 25°C
10
12
1460 F17
6
4
80
160
–200
–120
–40
40
120
200
2
0
18
16
14
240
WORST-CASE HYSTERESIS
ON 40 UNITS
HYSTERESIS (ppm)
–600
–400
–200
0
4
85°C TO 25°C
–40°C TO 25°C
5
6
1460 F18
3
2
200
400
–500
–300
–100
100
300
500
1
0
9
8
7
600
WORST-CASE HYSTERESIS
ON 34 UNITS
applications inForMation


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