X9319 Xicor, X9319 Datasheet - Page 5

• Manufacturer Part Number: X9319
• Description: Digitally Controlled Potentiometer (XDCP)
• Manufacturer: Xicor

A.C. OPERATING CHARACTERISTICS
(V
POWER UP AND DOWN REQUIREMENTS
In order to prevent unwanted tap position changes, or an inadvertant store, bring the CS and INC high before or
concurrently with the V
pleted. During power-up, the data sheet parameters for the DCP do not fully apply until 1 millisecond after V
reaches its final value. The V
A.C. TIMING
REV 1.7 7/10/03
t
t
Symbol
CPHNS
R
CC
t
t
R ,
t
t
t
t
CPHS
t
PU
IW
V
lD
DI
CYC
INC
U/D
t
t
t
CS
R
t
Cl
lH
lC
t
CC
lL
= 5V ±10%, T
(5)
F
(5)
W
(5)
(5)
(5)
(5)
(5)
t
CS to INC setup
INC HIGH to U/D change
U/D to INC setup
INC LOW period
INC HIGH period
INC inactive to CS inactive
CS deselect time (STORE)
CS deselect time (NO STORE)
INC to R
INC cycle time
INC input rise and fall time
Power up to wiper stable
V
CI
CC
t
IW
power-up rate
A
W
= Full Operating Temperature Range unless otherwise stated)
CC
change
t
IL
pin on powerup. The potentiometer voltages must be applied after this sequence is com-
t
ID
CC
t
Parameter
CYC
ramp spec is always in effect.
t
IH
t
DI
t
IC
MI
www.xicor.com
(3)
Min.
t
100
100
CPHS
0.2
20
1
1
1
1
1
4
t
F
Typ.
Limits
100
90%
(4)
10%
90%
Max.
500
500
500
50
t
R
t
CPHNS
X9319
V/ms
Unit
ms
ns
ns
µs
µs
µs
µs
µs
µs
µs
µs
µs
5 of 10
CC