參數(shù)資料
型號(hào)： ISL90843UIU1027Z
廠商： INTERSIL CORP
元件分類： 數(shù)字電位計(jì)
英文描述： Quad Digital Controlled Potentiometers (XDCP⑩)
中文描述： QUAD 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10
封裝： ROHS COMPLIANT, MO-187BA, MSOP-10
文件頁(yè)數(shù)： 5/10頁(yè)
文件大?。?/td> 755K
代理商： ISL90843UIU1027Z
5
FN8095.2
March 29, 2006
SDA vs SCL Timing
A0 and A1 Pin Timing
NOTES:
1. Typical values are for T
A
= 25°C and 3.3V supply voltage.
2. LSB: [V(RW)
255
– V(RW)
0
]
/
255. V(RW)
255
and V(RW)
0
are V(RW) for the DCP register set to FF hex and 00 hex respectively. LSB is the
incremental voltage when changing from one tap to an adjacent tap.
3. ZS error = V(RW)
0
/
LSB.
4. FS error = [V(RW)
255
– V
CC
]
/
LSB.
5. DNL = [V(RW)
i
– V(RW)
i-1
]
/
LSB-1, for i = 1 to 255. i is the DCP register setting.
6. INL = [V(RW)
i
– i LSB – V(RW)
0
]/LSB for i = 1 to 255.
7. V
MATCH
= [V(RWx)
i
– V(RWy)
i
]
/
LSB, for i = 0 to 255, x = 0 to 3 and y = 0 to 3.
Max V RW
)
Min V RW
–
Max V RW
)
i
Min V RW
+
8.
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.
9. MI =
|
R
255
– R
0
|
/
255. R
255
and R
0
are the measured resistances for the DCP register set to FF hex and 00 hex respectively.
10. Roffset = R
0
/
MI, when measuring between RW and RL.
Roffset = R
255
/
MI, when measuring between RW and RH.
11. RDNL = (R
i
– R
i-1
)
/
MI-1, for i = 32 to 255.
12. RINL = [R
i
– (MI i) – R
0
]
/
MI, for i = 32 to 255.
13. R
MATCH
= (R
i,x
– R
i,y
)
/
MI, for i = 0 to 255, x = 0 to 3 and y = 0 to 3.
6
125°C
14.
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.
15. This parameter is not 100% tested.
t
SU:A
A1 and A0 Setup Time
Before START condition
600
ns
t
HD:A
A1 and A0 Hold Time
After STOP condition
600
ns
Operating Specifications
Over the recommended operating conditions unless otherwise specified.
(Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
(NOTE 1)
MAX
UNITS
t
SU:STO
t
DH
t
HIGH
t
SU:STA
t
HD:STA
t
HD:DAT
t
SU:DAT
SCL
SDA
(INPUT TIMING)
SDA
(OUTPUT TIMING)
t
F
t
LOW
t
BUF
t
AA
t
R
t
HD:A
SCL
SDA IN
A0, A1
t
SU:A
CLK 1
START
STOP
TC
V
)
)
)
i
[
]
2
---------------------------------------------------------------------------------------------
6
125°C
----------------
×
=
TC
R
Max Ri
+
Min Ri
]
)
)
[
]
2
------------------------------–
----------------
×
=
ISL90843
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