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| X9409 Datasheet, PDF (12/21 Pages) Xicor Inc. – Quad Digitally Controlled Potentiometers | |||
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X9409 â Preliminary Information
D.C. OPERATING CHARACTERISTICS
(Over the recommended operating conditions unless otherwise specified.)
Symbol
Parameter
ICC1 VCC supply current (Active)
ICC2
ISB
ILI
ILO
VIH
VIL
VOL
VCC supply current
(Nonvolatile Write)
VCC current (standby)
Input leakage current
Output leakage current
Input HIGH voltage
Input LOW voltage
Output LOW voltage
Min.
VCC x 0.7
â0.5
Limits
Typ. Max.
100
1
1
10
10
VCC + 0.5
VCC x 0.1
0.4
Unit
µA
mA
µA
µA
µA
V
V
V
Test Conditions
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
ENDURANCE AND DATA RETENTION
Parameter
Minimum endurance
Data retention
Min.
100,000
100
Unit
Data changes per bit per register
Years
CAPACITANCE
Symbol
Test
CI/O(4)
CIN(4)
Input/output capacitance (SDA)
Input capacitance (A0, A1, A2, A3, and SCL)
Max.
8
6
Unit
pF
pF
Test Conditions
VI/O = 0V
VIN = 0V
POWER-UP TIMING
Symbol
Parameter
tr VCC(6)
VCC power-up rate
Min.
0.2
Max.
50
Unit
V/ms
POWER UP REQUIREMENTS (Power Up sequencing can affect correct recall of the wiper registers)
The preferred power-on sequence is as follows: First VCC, then the potentiometer pins, RH, RL, and RW. The VCC
ramp rate speciï¬cation should be met, and any glitches or slope changes in the VCC line should be held to <100mV
if possible. If VCC powers down, it should be held below 0.1V for more than 1 second before powering up again in
order for proper wiper register recall. Also, VCC should not reverse polarity by more than 0.5V. Recall of wiper
position will not be complete until VCC reaches its ï¬nal value.
Notes: (4) This parameter is periodically sampled and not 100% tested
(5) tPUR and tPUW are the delays required from the time the (last) power supply (VCC) is stable until the speciï¬c instruction can be
issued. These parameters are periodically sampled and not 100% tested.
(6) Sample tested only.
REV 1.6 1/30/03
www.xicor.com
Characteristics subject to change without notice. 12 of 21
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