12
FN8171.4
October 12, 2006
ABSOLUTE MAXIMUM RATINGS
Temperature under bias .................... -65C to +135C
Storage temperature.......................... -65C to +150C
Voltage on SCK any address input
with respect to V
SS
................................. -1V to +7V
V = | (V
H
- VL) |...................................................5.5V
Lead temperature (soldering, 10s) .................... 300C
I
W
(10s)..............................................................±6mA
COMMENT
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only; the functional operation of
the device (at these or any other conditions above
those listed in the operational sections of this
specification) is not implied. Exposure to absolute
maximum rating conditions for extended periods may
affect device reliability.
POTENTIOMETER CHARACTERISTICS
(Over recommended industrial operating conditions unless otherwise stated.)
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 / 255 or (R
H
- R
L
) / 255, single pot
(4) During power-up V
CC
> V
H
, V
L
, and V
W
.
(5) n = 0, 1, 2, …,255; m = 0, 1, 2, …, 254.
Symbol
Parameter Limits
Test ConditionsMin. Typ. Max. Units
R
TOTAL
End to End Resistance 100 k T version
R
TOTAL
End to End Resistance 50 k U version
End to End Resistance Tolerance ±20 %
Power Rating 50 mW 25C, each pot
I
W
Wiper Current ±3 mA
R
W
Wiper Resistance 300 I
W
= 3mA @ V+ = 3V
R
W
Wiper Resistance 150 I
W
= 3mA @ V+ = 5V
V
TERM
Voltage on any R
H
or R
L
Pin V
SS
V
CC
VV
SS
= 0V
Noise -120 dBV Ref: 1V
Resolution
0.4 %
Absolute Linearity
(1)
±1 MI
(3)
R
w(n)(actual)
- R
w(n)(expected)
(5)
Relative Linearity
(2)
±0.6 MI
(3)
R
w(n + 1)
- [R
w(n) + MI
]
(5)
Temperature Coefficient of R
TOTAL
300 ppm/C
Ratiometric Temp. Coefficient 20 ppm/°C
C
H
/C
L
/C
W
Potentiometer Capacitances 10/10/25 pF See Macro model
I
al
R
W
, R
H
, R
L
Leakage 0.1 10.0 µA Device in stand by.
Vin = V
SS
to V
CC
RECOMMENDED OPERATING CONDITIONS
Temp Min. Max.
Commercial 0C+70C
Industrial -40C+85C
Device Supply Voltage (V
CC
)
(4)
Limits
X9261 5V 10%
X9261
