X9116
A.C. OPERATING CHARACTERISTICS
(Over recommended operating conditions unless otherwise specified)
Limits
Symbol
t
Cl
t
lD
t
DI
t
lL
t
lH
t
lC
t
CPH
t
IW
t
CYC
t
R,
t
F(7)
t
PU(7)
t
R
V
CC(7)
t
WR
Parameter
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)
INC to Vw change
INC cycle time
INC input rise and fall time
Power up to wiper stable
V
CC
Power-up rate
Store cycle
Min.
100
100
2.9
1
1
1
10
Typ.
(6)
Max.
Unit
ns
ns
µs
µs
µs
µs
ms
1
4
5
500
5
µs
µs
µs
µs
mV/µs
ms
15
5
50
10
POWER UP AND DOWN REQUIREMENTS
There are no restrictions on the power-up or power-down conditions of V
CC
and the voltages applied to the potenti-
ometer pins provided that V
CC
is always more positive than or equal to V
H
, V
L
, and V
W
, i.e., V
CC
≥
V
H
, V
L
, V
W
. The
V
CC
ramp rate spec is always in effect.
A.C. TIMING
CS
t
CYC
t
CI
INC
t
ID
t
DI
t
F
t
IL
t
IH
t
IC
(store)
t
CPH
90% 90%
10%
t
R
U/D
t
IW
V
W
MI
(8)
Notes:
(6) Typical values are for T
A
= 25°C and nominal supply voltage.
(7) This parameter is not 100% tested.
(8) MI in the A.C. timing diagram refers to the minimum incremental change in the V
W
output due to a change in the wiper position.
REV 1.2 2/5/03
www.xicor.com
Characteristics subject to change without notice.
6 of 11
XICOR [ XICOR INC. ]
