參數(shù)資料
型號: DS1801
元件分類: 數(shù)字電位計
英文描述: Dual Audio Taper Potentiometer
文件頁數(shù): 9/10頁
文件大?。?/td> 229K
代理商: DS1801
DS1801
9 of 10
AC ELECTRICAL CHARACTERISTICS
PARAMETER
(-40
°
C to +85
°
C; V
CC
=2.7V to 5.5V)
TYP
MAX
SYMBOL
MIN
UNITS
NOTES
CLK Frequency
f
CLK
DC
10
MHz
7
Width of CLK Pulse
t
CH
50
ns
7
Data Setup Time
t
DC
30
ns
7
Data Hold Time
t
CDH
10
ns
7
Propagation Delay Time
Low to High Level
Clock to Output
t
PLH
50
ns
7
Propagation Delay Time
Low to High Level
t
PLH
50
ns
7
RST
High to Clock Input High
t
CC
50
ns
7
RST
Low
to Clock Input High
t
HLT
50
ns
7
CLK Rise Time
t
CR
60
ns
7
RST
Inactive
t
RLT
200
ns
7
NOTES:
1.
All voltages are referenced to ground.
2.
Valid for V
CC
= 2V only.
3.
Capacitance values apply at 25°C.
4.
Inter-channel matching is used to determine the relative voltage difference in dB between the same
tap position on each potentiometer. The DS1801 is specified for
±
0.5 dB inter-channel matching.
5.
Tap-to-tap tolerance is used to determine the change in voltage between successive tap positions. The
DS1801 is specified for
±
0.25 dB tap-to-tap tolerance.
6.
Typical values are for T
A
=25
°
C and nominal supply voltage.
7.
See Figure 3.
8.
Absolute tolerance is used to determine measured wiper voltage vs. expected wiper voltage as
determined by wiper position. The DS1801 is bounded by a
±
1 dB absolute tolerance.
9.
Maximum current specifications are based on clock rate and active zero-crossing detection. See
Figure 5 for clock rate vs. current specification.
10.
See Figure 7.
11.
Standby current levels apply when all inputs are driven to appropriate supply levels.
12.
These parameters are characterized and not 100% tested.
13.
Valid at 25
°
C only.
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