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LT1461CIS8-2.5 Datasheet(PDF) 3 Page - Linear Technology

Part # LT1461CIS8-2.5
Description  Micropower Precision Low Dropout Series Voltage Reference Family
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1461CIS8-2.5 Datasheet(HTML) 3 Page - Linear Technology

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3
LT1461
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage (Note 4)
LT1461ACS8/LT1461AIS8
– 0.04
0.04
%
LT1461BCS8/LT1461BIS8
– 0.06
0.06
%
LT1461CCS8/LT1461CIS8
– 0.08
0.08
%
LT1461DHS8
– 0.15
0.15
%
Output Voltage Temperature Coefficient (Note 5)
LT1461ACS8/LT1461AIS8
q
1
3
ppm/
°C
LT1461BCS8/LT1461BIS8
q
3
7
ppm/
°C
LT1461CCS8/LT1461CIS8
q
5
12
ppm/
°C
LT1461DHS8
q
7
20
ppm/
°C
Line Regulation
(VOUT + 0.5V) ≤ VIN ≤ 20V
2
8
ppm/V
q
12
ppm/V
LT1461DHS8
q
15
50
ppm/V
Load Regulation Sourcing (Note 6)
VIN = VOUT + 2.5V
0
≤ IOUT ≤ 50mA
12
30
ppm/mA
q
40
ppm/mA
LT1461DHS8, 0
≤ IOUT ≤ 10mA
q
50
ppm/mA
Dropout Voltage
VIN – VOUT, VOUT Error = 0.1%
IOUT = 0mA
0.06
V
IOUT = 1mA
q
0.13
0.3
V
IOUT = 10mA
q
0.20
0.4
V
IOUT = 50mA, I and C Grades Only
q
1.50
2.0
V
Output Current
Short VOUT to GND
100
mA
Shutdown Pin
Logic High Input Voltage
q
2.4
V
Logic High Input Current, Pin 3 = 2.4V
q
215
µA
Logic Low Input Voltage
q
0.8
V
Logic Low Input Current, Pin 3 = 0.8V
q
0.5
4
µA
Supply Current
No Load
35
50
µA
q
70
µA
Shutdown Current
RL = 1k
25
35
µA
q
55
µA
Output Voltage Noise (Note 7)
0.1Hz
≤ f ≤ 10Hz
8
ppmP-P
10Hz
≤ f ≤ 1kHz
9.6
ppmRMS
Long-Term Drift of Output Voltage, SO-8 Package (Note 8)
See Applications Information
60
ppm/
√kHr
Thermal Hysteresis (Note 9)
∆T = 0°C to 70°C
40
ppm
∆T = –40°C to 85°C
75
ppm
∆T = –40°C to 125°C
120
ppm
The q denotes specifications which apply over the specified temperature
range, otherwise specifications are at TA = 25°C. VIN – VOUT = 0.5V, Pin 3 = 2.4V, CL = 2µF, unless otherwise specified.
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1461 is guaranteed functional over the operating
temperature range of – 40
°C to 125°C.
Note 3: If the part is stored outside of the specified temperature range, or
the junction temperature exceeds the specified temperature range, the
output may shift due to hysteresis.
Note 4: ESD (Electrostatic Discharge) sensitive device. Extensive use of
ESD protection devices are used internal to the LT1461, however, high
electrostatic discharge can damage or degrade the device. Use proper ESD
handling precautions.
Note 5: Temperature coefficient is calculated from the minimum and
maximum output voltage measured at TMIN, Room and TMAX as follows:
TC = (VOMAX – VOMIN)/(TMAX – TMIN)
Incremental slope is also measured at 25
°C.
Note 6: Load regulation is measured on a pulse basis from no load to the
specified load current. Output changes due to die temperature change
must be taken into account separately.
Note 7: Peak-to-peak noise is measured with a single pole 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 seconds. RMS noise is measured with a single pole 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.


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