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參數(shù)資料
| 型號(hào)： | 419WZ |
| 廠商： | Intersil Corporation |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Single Digitally Controlled Potentiometer(XDCP) Low Noise, Low Power, SPI Bus, 128 Taps, Wiper Only |
| 中文描述： | 單數(shù)控電位（數(shù)字電位器）低噪聲，低功耗，SPI總線，128抽頭，雨刷只 |
| 文件頁數(shù)： | 9/13頁 |
| 文件大小： | 359K |
| 代理商： | 419WZ |
5
FN6311.0
June 28, 2006
Notes:
5. Typical values are for TA = 25°C and 3.3V supply voltage.
6. LSB: [V(RW)127 – V(RW)0]/127. V(RW)127 and V(RW)0 are V(RW) for the DCP register set to 7F hex and 00 hex respectively. LSB is the
incremental voltage when changing from one tap to an adjacent tap.
7. ZS error = V(RW)0/LSB.
8. FS error = [V(RW)127 – VCC]/LSB.
9. DNL = [V(RW)i – V(RW)i-1]/LSB-1, for i = 1 to 127. i is the DCP register setting.
10. INL = [V(RW)i – (i LSB) – V(RW)0]/LSB for i = 1 to 127
11.
for i = 16 to 127 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.
12. tWC 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.
13. Rpu is specified for the highest data rate transfer for the device. Higher value pullup can be used at lower data rates.
14. This parameter is not 100% tested.
Hysteresis
SHDN, SCK, SDI, and CS Input Buffer
Hysteresis
0.05*
VCC
V
VOL
SDO Output Buffer LOW Voltage
IOL = 4mA
0
0.4
V
Rpu
(Note 13)
SDO Pull-up Resistor Off-chip
Maximum is determined by tRO and tFO with
maximum bus load Cbus = 30pF, fSCK =
5MHz
2k
Cpin
(Note 14)
SHDN, SCK, SDI, SDO and CS Pin
Capacitance
10
pF
fSCK
SPI Frequency
5MHz
tCYC
SPI Clock Cycle Time
200
ns
tWH
SPI Clock High Time
100
ns
tWL
SPI Clock Low Time
100
ns
tLEAD
Lead Time
250
ns
tLAG
Lag Time
250
ns
tSU
SDI, SCK and CS Input Setup Time
50
ns
tH
SDI, SCK and CS Input Hold Time
50
ns
tRI
SDI, SCK and CS Input Rise Time
10
ns
tFI
SDI, SCK and CS Input Fall Time
10
20
ns
tDIS
SDO Output Disable Time
0
100
ns
tV
SDO Output Valid Time
350
ns
tHO
SDO Output Hold Time
0
ns
tRO
SDO Output Rise Time
Rpu = 2k, Cbus = 30pF
60
ns
tFO
SDO Output Fall Time
Rpu = 2k, Cbus = 30pF
60
ns
tCS
CS Deselect Time
2s
Operating Specifications Over the recommended operating conditions unless otherwise specified. (Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
(NOTE 5)
MAX
UNIT
TC
V
Max V RW
()
i
() Min V RW
()
i
()
–
Max V RW
()
i
() Min V RW
()
i
()
+
[] 2
----------------------------------------------------------------------------------------------
106
165°C
-----------------
×
=
ISL22419
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