X9250 Datasheet, PDF (11/21 Pages) Xicor Inc. – Quad Digitally Controlled Potentiometers (XDCP)

X9250
D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
Symbol
I_CC1
I_CC2
I_SB
I_LI
I_LO
V_IH
V_IL
V_OL
Parameter
V_CC supply current
(active)
V_CC supply current
(nonvolatile write)
V_CC current (standby)
Input leakage current
Output leakage current
Input HIGH voltage
Input LOW voltage
Output LOW voltage
Min.
Limits
Typ. Max.
400
1
V_CC x 0.7
–0.5
5
10
10
V_CC + 0.1
V_CC x 0.3
0.4
Unit
µA
mA
µA
µA
µA
V
V
V
Test Conditions
f_SCK = 2MHz, SO = Open,
Other Inputs = V_SS
f_SCK = 2MHz, SO = Open,
Other Inputs = V_SS
SCK = SI = V_SS, Addr. = V_SS
V_IN = V_SS to V_CC
V_OUT = V_SS to V_CC
I_OL = 3mA
ENDURANCE AND DATA RETENTION
Parameter
Minimum endurance
Data retention
Min.
100,000
100
Unit
Data changes per bit per register
Years
CAPACITANCE
Symbol
C_OUT⁽⁵⁾
C_IN⁽⁵⁾
Test
Output capacitance (SO)
Input capacitance (A0, A1, SI, and SCK, CS)
Max.
8
6
Unit
pF
pF
Test Conditions
V_OUT = 0V
V_IN = 0V
POWER-UP TIMING
Symbol
t_PUR⁽⁶⁾
t_PUW⁽⁶⁾
t_R V_CC⁽⁷⁾
Parameter
Power-up to initiation of read operation
Power-up to initiation of write operation
V_CC power up ramp rate
Min.
0.2
Max.
1
5
50
Unit
ms
ms
V/msec
POWER UP AND DOWN REQUIREMENT
The are no restrictions on the sequencing of the bias supplies V_CC, V+, and V- provided that all three supplies reach
their final values within 1msec of each other. 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. The V_CC ramp rate spec is always in effect.
Notes: (5) This parameter is periodically sampled and not 100% tested
(6) t_PUR and t_PUW are the delays required from the time the third (last) power supply (V_CC, V+ or V-) is stable until the specific instruction can
be issued. These parameters are periodically sampled and not 100% tested.
(7) Sample tested only.
A.C. TEST CONDITIONS
Input pulse levels
Input rise and fall times
Input and output timing level
REV 1.1.5 1/31/03
V_CC x 0.1 to V_CC x 0.9
10ns
V_CC x 0.5
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Characteristics subject to change without notice. 11 of 21