lt1460-10 Linear Technology Corporation, lt1460-10 Datasheet - Page 4

• Manufacturer Part Number: lt1460-10
• Description: Micropower Precision Series Reference
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
LT1460-10
Note 6: Excludes load regulation errors.
Note 7: Peak-to-peak noise is measured with a single highpass filter at
0.1Hz and a 2-pole lowpass filter at 10Hz. The unit is enclosed in a still-air
environment to eliminate thermocouple effects on the leads. The test time
is 10 sec. RMS noise is measured with a single highpass filter at 10Hz and
a 2-pole lowpass filter at 1kHz. The resulting output is full wave rectified
and then integrated for a fixed period, making the final reading an average
as opposed to RMS. A correction factor of 1.1 is used to convert from
average to RMS and a second correction of 0.88 is used to correct for the
nonideal bandpass of the filters.
Note 8: Long-term stability typically has a logarithmic characteristic and
therefore, changes after 1000 hours tend to be much smaller than before
that time. Total drift in the second thousand hours is normally less than
4
ELECTRICAL CHARACTERISTICS
10.006
10.002
9.998
9.994
9.990
9.986
9.982
100
0.1
10
1
– 50
0
Minimum Input/Output
Voltage Differential
Output Voltage Temperature Drift
–25
125 C
0.5
INPUT/OUTPUT VOLTAGE (V)
TEMPERATURE ( C)
0
1.0
– 55 C
25 C
25
1.5
3 TYPICAL PARTS
50
W
2.0
75
1460-10 G01
1460-10 G04
U
2.5
100
400
360
320
280
240
200
160
120
10
80
40
9
8
7
6
4
3
2
1
0
5
0
0.1
Load Regulation, Sourcing
Supply Current vs Input Voltage
0
2
4
OUTPUT CURRENT (mA)
6
INPUT VOLTAGE (V)
1
8
125 C
10
one third that of the first thousand hours with a continuing trend toward
reduced drift with time. Significant improvement in long-term drift can be
realized by preconditioning the IC with a 100 hour to 200 hour, 125 C
burn-in. Long-term stability will also be affected by differential stresses
between the IC and the board material created during board assembly. See
PC Board Layout in the Applications Information section.
Note 9: Hysteresis in output voltage is created by package stress that
differs depending on whether the IC was previously at a higher or lower
temperature. Output voltage is always measured at 25 C, but the IC is
cycled to 85 C or – 40 C before successive measurements. Hysteresis is
roughly proportional to the square of the temperature change. Hysteresis
is not normally a problem for operational temperature excursions where
the instrument might be stored at high or low temperature.
– 55 C
12
10
14
25 C
– 55 C
16
125 C
1460-10 G02
25 C
1460-10 G05
18
100
20
10.004
10.000
9.996
9.992
9.988
9.984
9.980
100
90
80
70
60
50
40
30
20
10
0
Load Regulation, Sinking
0
Line Regulation
6
8
1
OUTPUT CURRENT (mA)
10
INPUT VOLTAGE (V)
2
12
– 55 C
25 C
– 55 C
125 C
25 C
14
3
16
125 C
4
18
1460-10 G06
1460-10 G03
20
5