ISL21400 Intersil Corporation, ISL21400 Datasheet - Page 7

• Manufacturer Part Number: ISL21400
• Description: Programmable Temperature Slope Voltage Reference
• Manufacturer: Intersil Corporation

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