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X9429 Datasheet, PDF (14/21 Pages) Intersil Corporation – Single Digitally Controlled Potentiometer
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X9429
D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
Limits
Symbol
Parameter
Min. Typ. Max. Unit
Test Conditions
ICC1
VCC supply current
(nonvolatile write)
ICC2
VCC supply current
(move wiper, write, read)
ISB
VCC current (standby)
ILI
Input leakage current
ILO
Output leakage current
VIH
Input HIGH voltage
VIL
Input LOW voltage
VOL
Output LOW voltage
VCC x 0.7
-0.5
1
mA
100
µA
5
µA
10
µA
10
µA
VCC x 0.5 V
VCC x 0.1 V
0.4
V
fSCL = 400kHz, SDA = Open,
Other Inputs = VSS
fSCL = 400kHz, SDA = Open,
Other Inputs = VSS
SCL = SDA = VCC, Addr. = VSS
VIN = VSS to VCC
VOUT = VSS to VCC
IOL = 3mA
Notes: (1)
(2)
(3)
(4)
Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as
a potentiometer.
Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potenti-
ometer. It is a measure of the error in step size.
MI = RTOT/63 or (RH - RL)/63, single pot
Typical = individual array resolutions.
ENDURANCE AND DATA RETENTION
Parameter
Minimum endurance
Data retention
Min.
100,000
100
Unit
Data changes per bit per register
Years
CAPACITANCE
Symbol
CI/O(5)
CIN(5)
Test
Input/output capacitance (SDA)
Input capacitance (A0, A2,and A3 and SCL)
Max.
8
6
Unit
pF
pF
Test Conditions
VI/O = 0V
VIN = 0V
POWER-UP TIMING
Symbol
tRVCC(6)
Parameter
VCC Power-up ramp rate
Min.
0.2
Typ.
Max.
50
Unit
V/msec
POWER-UP AND POWER-DOWN REQUIREMENTS
There are no restrictions on the power-up or power-down conditions of VCC and the voltage applied to the
potentiometer pins provided that VCC is always more positive than or equal to VH, VL, and VW, i.e., VCC ≥ VH, VL, VW.
The VCC ramp rate spec is alway in effect.
Notes: (5) This parameter is periodically sampled and not 100% tested
(6) Sample tested only.
14
FN8248.2
October 19, 2005
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