CAT5128 Datasheet, PDF (5/8 Pages) Catalyst Semiconductor – 32-Tap Digital Up/Down Control Potentiometer

CAT5128
AC CONDITIONS OF TEST
V_CC Range
Input Pulse Levels
Input Rise and Fall Times
Input Reference Levels
2.5V ≤ V_CC ≤ 5.5V
0.2V_CC to 0.7V_CC
10ns
0.5V_CC
AC OPERATING CHARACTERISTICS
V_CC = +2.5V to +5.5V, V_H = V_CC, V_L = 0V, unless othewise specified
Symbol
Parameter
Min
t_UP
U¯¯P LOW Period
500
t_DOWN
¯D¯O¯W¯¯N¯ _{LOW Period}
500
t_{UP_CYC}
U¯¯P Cycle Time
1
t_{DOWN_CYC}
¯D¯O¯W¯¯N¯ _{Cycle Time}
1
t_{UP_R,} t_{UP_F(2)}
U¯¯P Rise and Fall Time
–
t_{DOWN_R,} t_{DOWN_F(2)} ¯D¯O¯W¯¯N¯ Rise and Fall Time
–
t_{UP_SET}
U¯¯P Settling Time
200
t_{DOWN_SET}
¯D¯O¯W¯¯N¯ _{Settling Time}
200
t_PU(2)
Power-up to Wiper Stable
–
INTERFACE TIMING DIAGRAM
t_{UP_CYC}
t_UP
t_{UP_R}
90% 90%
UP
10%
10%
Typ⁽¹⁾
–
–
–
–
–
–
–
–
–
t_{UP_F}
Max
–
–
–
–
500
500
–
–
1
t_{UP_SET}
R_W
MI⁽³⁾
DOWN
Increment R_W in Discrete Steps
t_{DOWN_CYC}
t_DOWN
t_{DOWN_R}
t_{DOWN_F}
90%
10%
90%
10%
Units
ns
ns
µs
µs
ns
ns
ns
ns
ms
t_{DOWN_SET}
R_W
MI⁽³⁾
Decrement R_W in Discrete Steps
Notes:
(1) Typical values are for T_A = 25ºC and nominal supply voltage.
(2) This parameter is periodically sampled and not 100% tested.
(3) MI in the A.C. Timing diagram refers to the minimum incremental change in the W output due to a change in the wiper position.
© Catalyst Semiconductor, Inc.
5
Characteristics subject to change without notice
Doc. No. MD-2128 Rev. A