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X9421 Datasheet, PDF (14/21 Pages) Xicor Inc. – Single Digitally Controlled (XDCP) Potentiometer
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X9421
D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
Symbol
ICC1
ICC2
ISB
ILI
ILO
VIH
VIL
VOL
Parameter
VCC Supply Current
(Active)
VCC Supply Current
(Non-volatile Write)
VCC Current (Standby)
Input Leakage Current
Output Leakage Current
Input HIGH Voltage
Input LOW Voltage
Output LOW Voltage
Min.
Limits
Typ. Max.
400
Units
µA
1
mA
VCC x 0.7
-0.5
1
µA
10
µA
10
µA
VCC + 0.5
V
VCC x 0.1
V
0.4
V
Test Conditions
fSCK = 2MHz, SO = Open,
Other Inputs = VSS
fSCK = 2MHz, SO = Open,
Other Inputs = VSS
SCK = SI = VSS, Addr. = VSS
VIN = VSS to VCC
VOUT = VSS to VCC
IOL = 3mA
ENDURANCE AND DATA RETENTION
Parameter
Minimum Endurance
Data Retention
Min.
100,000
100
Units
Data Changes per Bit per Register
Years
CAPACITANCE
Symbol
COUT(5)
CIN(5)
Test
Output Capacitance (SO)
Input Capacitance (A0, SI, and SCK)
Max.
8
6
Units
pF
pF
Test Conditions
VOUT = 0V
VIN = 0V
POWER-UP TIMING
Symbol
tRVCC(5)
Parameter
VCC Power-up Ramp
Max.
0.2
Max.
50
Units
V/msec
POWER-UP REQUIREMENTS (Power-up sequencing can affect correct recall of the wiper registers)
The preferred power-on sequence is as follows: First VCC and then the potentiometer pins, RH, RL, and RW. Voltage
should not be applied to the potentiometer pins before VCC is applied. The VCC ramp rate specification should be
met, and any glitches or slope changes in the VCC line should be held to <100mV if possible. Also, VCC should not
reverse polarity by more than 0.5V. Recall of wiper position will not be complete until VCC reaches its final value.
Notes: (5) This parameter is periodically sampled and not 100% tested.
A.C. TEST CONDITIONS
Input pulse levels
Input rise and fall times
Input and output timing level
VCC x 0.1 to VCC x
0.9
10ns
VCC x 0.5
14
FN8196.1
September 23, 2005
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