X9428 Xicor, X9428 Datasheet - Page 12

• Manufacturer Part Number: X9428
• Description: Single Digitally Controlled Potentiometer
• Manufacturer: Xicor

X9428
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 AND POWER-DOWN
There are no restrictions on the power-up or power-down sequencing of the bias supplies V
that all three supplies reach their final values within 1msec of each other. However, at all times, the voltages on the
potentiometer pins must be less than V+ and more than V–. The recall of the wiper position from nonvolatile
memory is not in effect until all supplies reach their final value.
Notes: (5) This parameter is periodically sampled and not 100% tested
REV 1.1.5 7/8/03
Symbol
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
(4) Max. = all four arrays cascaded together, Typical = individual array resolutions.
(6) t
(7) Sample tested only.
CC
(5)
(5)
(6)
(6)
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.
(7)
PUR
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
H
—R
L
)/63, single pot
Parameter
Test
V
100,000
CC
Min.
100
Min.
–0.5
x 0.7
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Typ.
Limits
V
V
CC
CC
Max.
100
0.4
10
10
Min.
1
1
0.2
x 0.5
x 0.1
Max.
8
6
Data changes per bit per register
Unit
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
CC
SS
Max.
to V
50
1
5
, V+, and V- provided
to V
Test Conditions
CC
CC
SS
SS
CC
V
, Addr. = V
V
I/O
IN
= 0V
= 0V
V/msec
Unit
ms
ms
12 of 20
SS