x95820 Intersil Corporation, x95820 Datasheet - Page 6

• Manufacturer Part Number: x95820
• Description: Dual Digital Controlled Potentiometers Xdcp? ; Low Noise/low Power/2-wire Bus/256 Taps
• Manufacturer: Intersil Corporation

NOTES:
Typical Performance Curves
10. Roffset = R
12. RINL = [R
13. R
14.
15. This parameter is not 100% tested.
16. t
11. RDNL = (R
1. Typical values are for T
2. LSB: [V(RW)
3. ZS error = V(RW)
4. FS error = [V(RW)
5. DNL = [V(RW)
6. INL = [V(RW)
7. V
8.
9. MI =
FIGURE 1. WIPER RESISTANCE vs TAP POSITION
TC
160
140
120
100
incremental voltage when changing from one tap to an adjacent tap.
for i = 16 to 240 decimal, T = -40°C to 85°C. Max( ) is the maximum value of the wiper voltage and Min ( ) is the minimum value of the wiper
voltage over the temperature range.
Roffset = R
for i = 32 to 255, T = -40°C to 85°C. Max( ) is the maximum value of the resistance and Min ( ) is the minimum value of the resistance over the
temperature range.
valid STOP condition at the end of a Write sequence of a I
write cycle.
TC
WC
80
60
40
20
MATCH
MATCH
0
V
R
0
is the minimum cycle time to be allowed for any non-volatile Write by the user, unless Acknowledge Polling is used. It is the time from a
|
=
R
=
255
V
--------------------------------------------------------------------------------------------- -
[
V
Max V RW
--------------------------------------------------------------- -
[
CC
= [V(RWx)
= (R
Max Ri
CC
i
Max V RW
[
- (MI • i) - R
Max Ri
[ I(RW) = V
i
0
255
- R
- R
= 2.7, T = -40°C
255
/ MI, when measuring between RW and RL.
= 5.5, T = -40°C
i
(
i,x
i
(
50
– (i • LSB – V(RW)
0
(
/ MI, when measuring between RW and RH.
i-1
- V(RW)
|
(
(
- R
- V(RW)
/ 255. R
) / MI, for i = 32 to 255.
0
(
)
255
+
/ LSB.
) Min Ri
i,y
i
TAP POSITION (DECIMAL)
–
- V(RWy)
Min Ri
)
)
i
- V
CC
)
)
0
/ MI, for i = 0 to 255, x = 0 to 1 and y = 0 to 1.
A
i
i-1
] / MI, for i = 32 to 255.
+
) Min V RW
255
0
CC
(
= 25°C and 3.3V supply voltage.
100
/R
–
Min V RW
] / LSB-1, for i = 1 to 255. i is the DCP register setting.
] / 255. V(RW)
(
TOTAL
] / LSB.
)
and R
V
6
] 2 ⁄
)
i
(
CC
] / LSB, for i = 0 to 255, x = 0 to 1 and y = 0 to 1.
V
]
(
CC
(
= 2.7, T = 85°C
0
×
(
)]/LSB for i = 1 to 255.
0
] FOR 50kΩ (U)
= 5.5, T = 25°C
---------------- -
125°C
are the measured resistances for the DCP register set to FF hex and 00 hex respectively.
150
10
)
i
)
)
6
i
] 2 ⁄
255
)
V
V
and V(RW)
×
CC
CC
---------------- -
125°C
10
200
= 2.7, T = 25°C
= 5.5, T = 85°C
6
0
are V(RW) for the DCP register set to FF hex and 00 hex respectively. LSB is the
2
250
C serial interface Write operation, to the end of the self-timed internal non-volatile
X95820
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2.7
FIGURE 2. STANDBY I
3.2
25°C
-40°C
3.7
V
CC
4.2
(V)
CC
vs V
4.7
CC
85°C
July 18, 2006
5.2
FN8212.2