isl22444 Intersil Corporation, isl22444 Datasheet - Page 7

• Manufacturer Part Number: isl22444
• Description: Quad Digitally Controlled Potentiometer Xdcp? , Low Noise, Low Power, Spi? Bus, 256 Taps
• Manufacturer: Intersil Corporation

Operating Specifications
NOTES:
10. V
11.
12. MI =
13. Roffset = RW
14. RDNL = (RW
15. RINL = [RW
16. R
17.
18. t
19. R
20. This parameter is not 100% tested.
4. Typical values are for T
5. LSB: [V(RW)
6. ZS error = V(RW)
7. FS error = [V(RW)
8. DNL = [V(RW)
9. INL = [V(RW)
SYMBOL
(Note 20)
t
f
t
Cpin
LEAD
t
t
t
incremental voltage when changing from one tap to an adjacent tap.
SCK
CYC
t
LAG
t
t
t
t
t
t
TC
WH
DIS
WL
t
t
HO
RO
SU
t
SO
FO
CS
00 hex respectively.
Roffset = RW
t
RI
TC
FI
MATCH
WC
H
V
pu
MATCH
V
R
is specified for the highest data rate transfer for the device. Higher value pull-up can be used at lower data rates.
is the time from the end of a Write sequence of SPI serial interface, to the end of the self-timed internal non-volatile write cycle.
|
=
RW
=
= [V(RWx)i -V(RWy)i]/LSB, for i = 0 to 255, x = 0 to 3, y = 0 to 3.
--------------------------------------------------------------------------------------------- -
[
capacitance
SPI frequency
SPI clock cycle time
SPI clock high time
SPI clock low time
Lead time
Lag time
SDI, SCK and CS input setup time
SDI, SCK and CS input hold time
SDI, SCK and CS input rise time
SDI, SCK and CS input fall time
SDO output Disable time
SDO output setup time
SDO output valid time
SDO output hold time
SDO output rise time
SDO output fall time
CS deselect time
Max V RW
= [(Rx)i -(Ry)i]/MI, for i = 0 to 255, x = 0 to 3, y = 0 to 3.
--------------------------------------------------------------- -
[
SCK, SDI, SDO and CS pin
255
Max Ri
Max V RW
[
Max Ri
255
i
i
i
– (MI • i) – RW
(
0
i
– RW
255
– i • LSB – V(RW)]/LSB for i = 1 to 255
– RW
(
/
– V(RW)
(
MI, when measuring between RW and RL.
(
(
– V(RW)
0
/
255
(
MI, when measuring between RW and RH.
/
)
LSB.
PARAMETER
0
+
) Min Ri
i-1
|
–
)
/
Min Ri
– V
255. MI is a minimum increment. RW
i
)
A
)
)
/
i-1
i
MI -1, for i = 1 to 255.
+
) Min V RW
= +25°C and 3.3V supply voltage.
0
CC
–
(
Min V RW
]
]
/
/
(
LSB-1, for i = 1 to 255. i is the DCP register setting.
255. V(RW)
]
0
/
)
LSB.
]
7
] 2 ⁄
(
/
)
MI, for i = 1 to 255.
Over the recommended operating conditions unless otherwise specified. (Continued)
]
(
(
×
(
+
---------------- -
165°C
10
)
i
255
)
)
6
i
] 2 ⁄
)
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 minimum value of the resistance over the temperature range.
×
+
R
R
---------------- -
165°C
pu
pu
10
= 2k, Cbus = 30pF
= 2k, Cbus = 30pF
6
for i = 16 to 255 decimal, T = -40°C to +125°C. Max ( ) is the maximum value of the wiper
voltage and Min ( ) is the minimum value of the wiper voltage over the temperature range.
0
are V(RW) for the DCP register set to FF hex and 00 hex respectively. LSB is the
255
TEST CONDITIONS
ISL22444
and RW
0
are the measured resistances for the DCP register set to FF hex and
MIN
200
100
100
250
250
150
50
50
10
10
50
0
0
2
(NOTE 4)
TYP
10
MAX
100
20
60
60
5
May 24, 2007
UNIT
FN6426.0
MHz
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs