DS1802 Datasheet, PDF (15/17 Pages) Dallas Semiconductor – Dual Audio Taper Potentiometer With Pushbutton Control

AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
CLK Frequency
f_CLK
DC
Width of CLK Pulse
t_CH
50
Data Setup Time
t_DC
30
Data Hold Time
t_CDH
10
Propagation Delay Time
t_PLH
Low to High Level
Clock to Output
Propagation Delay Time
t_PLH
Low to High Level
RST High to Clock Input High
t_CC
50
RST Low to Clock Input High
t_HLT
50
CLK Rise Time
t_CR
RST Inactive
t_RLT
200
DS1802
(0°C to 70°C; V_CC=2.7V to 5.5V)
TYP MAX UNITS NOTES
10
MHz 10,13
ns
10,13
ns
10,13
ns
10,13
50
ns
10,13
50
ns
10,13
ns
10,13
ns
10,13
50
ns
10,13
ns
10,13
AC ELECTRICAL CHARACTERISTICS (PUSHBUTTON INPUTS)
(0°C to 70°C; V_CC=2.7V to 5.5V)
PARAMETER
SYMBOL MIN TYP MAX UNITS NOTES
Single Pulse Input
t_CPW
1
DC
ms
3,5,13
Repetitive Input Pulse High Time
t_HPW
1
DC
ms
3,5,13
Continuous Input Pulse
t_CCP
1
DC
s
3,5,13
NOTES:
1. All voltages are referenced to ground.
2. Valid for V_CC =5V only.
3. Both UCx and DCx inputs are internally pulled up with a 50KΩ resistance.
4. Capacitance values apply at 25°C.
5. Input pulse width is the minimum time required for an input to cause an increment or decrement. If
the UCx or DCx inputs is held active for longer than 1 second, subsequent increments or decrements
will occur on 100 ms intervals until the inputs UCx, DCx are released to V_IH. Timing tolerances for
pushbutton control is ±30%.
6. Inter-channel matching is used to determine the relative voltage difference in dB between the same
tap position on each potentiometer. The DS1802 is specified for ±0.5 dB inter-channel matching.
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