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參數資料
| 型號： | ISL90843 |
| 廠商： | Intersil Corporation |
| 英文描述： | Low Noise, Low Power, I2C Bus, 256 Taps(低噪聲, 低功率, I2C總線, 256抽頭數字電位器) |
| 中文描述： | 低噪聲，低功耗，I2C總線，256絲錐（低噪聲，低功率和I2C總線，256抽頭數字電位器） |
| 文件頁數： | 5/10頁 |
| 文件大?。?/td> | 751K |
| 代理商： | ISL90843 |
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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