X9418_06 Datasheet, PDF (12/20 Pages) Intersil Corporation – Dual Digitally Controlled Potentiometers

X9418
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
(nonvolatile write)
V_CC supply current
(move wiper, write, read)
V_CC current (standby)
Input leakage current
Output leakage current
Input HIGH voltage
Input LOW voltage
Output LOW voltage
Min.
Limits
Typ. Max.
1
100
V_CC x 0.7
-0.5
1
10
10
V_CC + 0.5
V_CC x 0.1
0.4
Unit
mA
µA
µA
µA
µA
V
V
V
Test Conditions
f_SCL = 400kHz, SDA = Open,
Other Inputs = V_SS
f_SCL = 400kHz, SDA = Open,
Other Inputs = V_SS
SCL = SDA = V_CC, Addr. = V_SS
V_IN = V_SS to V_CC
V_OUT = V_SS to V_CC
I_OL = 3mA
Notes: (1) Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a
potentiometer.
(2) Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a
potentiometer. It is a measure of the error in step size.
(3) MI = RTOT/63 or (R_H - R_L)/63, single pot
ENDURANCE AND DATA RETENTION
Parameter
Minimum endurance
Data retention
Min.
100,000
100
Unit
Data changes per bit per register
Years
CAPACITANCE
Symbol
C_I/O(4)
C_IN(4)
Test
Input/output capacitance (SDA)
Input capacitance (A0, A1, A2, A3, and SCL)
Max.
8
6
Unit
pF
pF
Test Conditions
V_I/O = 0V
V_IN = 0V
POWER-UP TIMING
Symbol
t_PUR(5)
t_PUW(5)
t_RV_CC(6)
Parameter
Power-up to initiation of read operation
Power-up to initiation of write operation
V_CC Power up ramp rate
Min.
0.2
Typ.
Max.
1
5
50
Unit
ms
ms
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 V_CC, then V+ and V-, and then the potentiometer pins, R_H, R_L,
and R_W. Voltage should not be applied to the potentiometer pins before V+ or V- is applied. The V_CC ramp rate
specification should be met, and any glitches or slope changes in the V_CC line should be held to <100mV if possible.
If V_CC 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, V_CC should not reverse polarity by more than 0.5V. Recall of wiper position will not
be complete until V_CC, V+ and V- reach their final value.
Notes: (4) This parameter is periodically sampled and not 100% tested
(5) 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.
(6) This is a tested or guaranteed parameter and should only be used as a guidance.
12
FN8194.3
October 12, 2006