ISL23445 Intersil Corporation, ISL23445 Datasheet - Page 8

• Manufacturer Part Number: ISL23445
• Description: Low Voltage Digitally Controlled Potentiometer
• Manufacturer: Intersil Corporation

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Serial Interface Specification
NOTES:
10. ZS error = V(RW)
11. FS error = [V(RW)
12. DNL = [V(RW)
13. INL = [V(RW)
14.
15. MI = |RW
16. Roffset = RW
17. RDNL = (RW
18. RINL = [RW
19.
20. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
21. It is preferable to ramp up both the V
22. VMATCH = [V(RWx)i - V(RWy)i]/LSB, for i = 1 to 255, x = 0 to 3 and y = 0 to 3.
23. RMATCH = (RWi,x - RWi,y)/MI, for i = 1 to 255 , x = 0 to 3 and y = 0 to 3.
8. Typical values are for T
9. LSB = [V(RW)
SYMBOL
voltage when changing from one tap to an adjacent tap.
hex respectively.
Roffset = RW
first followed by the V
TC
TC
t
CS
V
R
=
=
Max V RW
----------------------------------------------------------------------------- -
[
------------------------------------------------------ -
255
Max Ri
i
i
i
(
– (MI • i) – RW
CS Deselect Time
255
0
– RW
255
i
– i • LSB – V(RW)
– RW
Ri +25°C
/MI, when measuring between RW and RL.
– V(RW)
V RW
(
(
(
0
(
/MI, when measuring between RW and RH.
– V(RW)
255
/LSB.
) Min Ri
i-1
0
)
–
|/255. MI is a minimum increment. RW
i
i
)/MI -1, for i = 16 to 255.
CC
– V
) Min V RW
(
A
+25°C
i-1
–
.
= +25°C and 3.3V supply voltages.
PARAMETER
CC
]/LSB-1, for i = 1 to 255. i is the DCP register setting.
)
0
(
]/255. V(RW)
]/LSB.
0
(
]/MI, for i = 16 to 255.
)
)
]
8
)
(
×
0
]/LSB for i = 1 to 255
---------------------
+165°C
10
)
LOGIC
i
)
6
×
255
---------------------
+165°C
and the V
10
minimum value of the resistance over the temperature range.
and V(RW)
for i = 16 to 255, T = -40°C to +125°C. Max( ) is the maximum value of the resistance and Min( ) is the
6
For SCK, SDI, SDO, CS Unless Otherwise Noted. (Continued)
CC
voltage and Min( ) is the minimum value of the wiper voltage over the temperature range.
for i = 16 to 255 decimal, T = -40°C to +125°C. Max( ) is the maximum value of the wiper
0
supplies at the same time. If this is not possible, it is recommended to ramp-up the V
are V(RW) for the DCP register set to FF hex and 00 hex respectively. LSB is the incremental
255
ISL23445
and RW
TEST CONDITIONS
0
are the measured resistances for the DCP register set to FF hex and 00
(Note 20)
MIN
2
(Note 8)
TYP
(Note 20)
MAX
June 21, 2011
FN7874.0
LOGIC
UNITS
µs
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