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ISL21400 Fiches technique(PDF) 7 Page - Intersil Corporation

No de pièce ISL21400
Description  Programmable Temperature Slope Voltage Reference
Download  17 Pages
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Fabricant  INTERSIL [Intersil Corporation]
Site Internet  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL21400 Fiches technique(HTML) 7 Page - Intersil Corporation

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7
FN8091.0
December 14, 2006
3. This parameter is not 100% tested.
4. Cb = total capacitance of one bus line in pF.
5. tWC is the time from a valid stop condition at the end of a write sequence to the end of the self-timed internal nonvolatile write cycle. It is the
minimum cycle time to be allowed for any nonvolatile write by the user.
6. Over the specified temperature range. Temperature slope (TS) is measured by the box method whereby the change in VOUT is divided by the
temperature range; in this case, -40°C to +85°C = +125°C. TS1, TS2, TS3 =.
7. Given by PSRR (dB) = 20 * log10 (ΔVout/ΔVCC) at DC.
8. Test +25°C and +85°C only.
9. Total error of Equation 1 @ AV =1, K = -2.1mV/°C, VREF = 1.20V, m = 255, n = 255 to 0, VCC = 3.0V
10. Over the specified temperature range. Temperature slope (TS) is measured by the box method whereby the change in VOUT is divided by the
temperature range. Incremental TS is the temperature slope at m = 255 minus the temperature slope at m = 0 divided by 255 with AV = 1, n = 255
11. Temperature Slope Non- linearity is measured over the specified temperature range. The actual change in output voltage is subtracted from the
expected change in output voltage, and then divided by the expected change to normalize before converting to percent.
12. For codes n = 8 to 255
13. Guaranteed monotonic
14. tWC is the time from a valid STOP condition at the end of a Write sequence of I
2C serial interface, to the end of the self-timed internal nonvolatile
write cycle.
15.
θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
TS
V
OUT Tm in
() V
OUT Tm ax
()
Tmin
Tmax
--------------------------------------------------------------------------------
=
V
OUT TE
()
V
OUT mea sured
() V
OUT Equation1
()
V
OUT Eq ua tion1
()
------------------------------------------------------------------------------------------------------------- x100%
=
TS4
V
OUT Tmin
() V
OUT Tm ax
()
Tmin
Tmax
()
--------------------------------------------------------------------------------
m
255
=
⎝⎠
⎜⎟
⎛⎞
V
OUT Tm in
() V
OUT Tm ax
()
Tmin
Tmax
()
--------------------------------------------------------------------------------
m0
=
⎝⎠
⎜⎟
⎛⎞
255
÷
=
TSNL
T
( Sy ΔT )
() ΔVOUT
TSy ΔT
×
---------------------------------------------------------- x100%; y
123
,,
==
Typical Performance Curves
FIGURE 1. VOUT vs TEMPERATURE (AV = 1, 2)
FIGURE 2. VOUT vs TEMPERATURE (AV = 4)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
-40
-15
10
35
60
85
TEMPERATURE (°C)
TS = 0
TS = 255
TS = 127
TS = 0
TS = 255
TS = 127
AV = 2
AV = 1
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-40
-15
10
35
60
85
TEMPERATURE (°C)
AV = 4
TS = 0
TS = 255
TS = 127
ISL21400


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