X9418 Xicor, X9418 Datasheet - Page 12

• Manufacturer Part Number: X9418
• Description: Dual Digitally Controlled Potentiometers
• Manufacturer: Xicor

X9418
D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
Notes: (1) Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used
ENDURANCE AND DATA RETENTION
CAPACITANCE
POWER-UP TIMING
Power Up Requirements (Power up sequencing can affect correct recall of the wiper registers)
The preferred power-on sequence is as follows: First V
R
specification should be met, and any glitches or slope changes in the V
ble. If V
proper wiper register recall. Also, V
not be complete until V
Notes: (4) This parameter is periodically sampled and not 100% tested
REV 1.1.5 7/23/02
Symbol
L
, and R
Symbol
I
I
V
V
CC1
CC2
I
I
Symbol
V
t
I
C
SB
LO
t
R
C
LI
OL
t
IH
PUW
IL
PUR
I/O
V
IN
(2) Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potenti-
(3) MI = RTOT/63 or (R
(5) t
(6) This is a tested or guaranteed parameter and should only be used as a guidance.
CC
CC
(4)
(4)
(5)
(5)
as a potentiometer.
ometer. It is a measure of the error in step size.
Minimum endurance
instruction can be issued. These parameters are periodically sampled and not 100% tested.
(6)
W
PUR
powers down, it should be held below 0.1V for more than 1 second before powering up again in order for
. Voltage should not be applied to the potentiometer pins before V+ or V– is applied. The V
V
(nonvolatile write)
V
(move wiper, write, read)
V
Input leakage current
Output leakage current
Input HIGH voltage
Input LOW voltage
Output LOW voltage
Data retention
CC
CC
CC
Parameter
and t
Input/output capacitance (SDA)
Input capacitance (A0, A1, A2, A3, and SCL)
supply current
supply current
current (standby)
Power-up to initiation of read operation
Power-up to initiation of write operation
V
PUW
CC
Parameter
Power up ramp rate
are the delays required from the time the third (last) power supply (V
CC
H
, V+ and V– reach their final value.
—R
L
)/63, single pot
Parameter
CC
Test
should not reverse polarity by more than 0.5V. Recall of wiper position will
V
100,000
CC
Min.
100
Min.
–0.5
x 0.7
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Typ.
CC
, then V+ and V–, and then the potentiometer pins, R
Limits
V
V
CC
CC
Max.
100
0.4
10
10
Min.
1
1
0.2
+ 0.5
x 0.1
Max.
8
6
Data changes per bit per register
CC
Unit
line should be held to <100mV if possi-
mA
µA
µA
µA
µA
CC
V
V
V
Characteristics subject to change without notice.
, V+ or V-) is stable until the specific
Typ.
f
Other Inputs = V
f
Other Inputs = V
SCL = SDA = V
V
V
I
SCL
SCL
OL
Years
Unit
IN
OUT
Unit
pF
pF
= 3mA
= V
= 400kHz, SDA = Open,
= 400kHz, SDA = Open,
= V
Test Conditions
SS
SS
Max.
to V
50
1
5
to V
Test Conditions
CC
CC
SS
SS
CC
V
, Addr. = V
V
I/O
IN
CC
= 0V
= 0V
V/msec
ramp rate
Unit
ms
ms
12 of 21
SS
H
,