X9421
REV 1.1.6 8/1/02
Characteristics subject to change without notice.
12 of 21
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ABSOLUTE MAXIMUM RATINGS
Temperature under bias. . . . . . . . . . . . –65
°
C to +135
°
C
Storage temperature . . . . . . . . . . . . . . –65
°
C to +150
°
C
Voltage on SCK any address input
with respect to V
SS
. . . . . . . . . . . . . . . . . –1V to +7V
V = | (V
H
– V
L
) | . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V
Lead temperature (soldering, 10 seconds) . . . . . . 300
°
C
I
W
(10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . ±6mA
Any V
H
/R
H
, V
L
/R
L
, V
W
/R
W
. . . . . . . . . . . . V
SS
to V
CC
COMMENT
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only; 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.
RECOMMENDED OPERATING CONDITIONS
Temp
Commercial
Industrial
Min.
0°C
–40°C
Max.
+70°C
+85°C
Device
X9421
X9421-2.7
Supply Voltage (V
CC
) Limits
5V
±
10%
2.7V to 5.5V
ANALOG CHARACTERISTICS
(Over recommended 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.
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.
MI = RTOT/63 or (V
H
–V
L
)/63, single pot
Typical = Individual array resolution.
(2)
(3)
(4)
Symbol
Parameter
Limits
Test Conditions
Min.
Typ.
Max.
±20
50
±3
250
Units
%
mW
mA
End to End Resistance Tolerance
Power Rating
Wiper Current
Wiper Resistance
25°C, each pot
I
W
R
W
150
Wiper Current =
±
1mA,
V
CC
= 5V
Wiper Current =
±
1mA,
V
CC
= 3V
V
SS
= 0V
Ref: 1kHz
See Note 5
V
w(n)(actual)
– V
w(n)(expected)
V
w(n + 1)
– [V
w(n) + MI
]
See Note 5
See Note 5
400
1000
V
TERM
Voltage on any V
H
/R
H
, V
L
/R
L
, V
W
/R
W
Noise
Resolution
(4)
Absolute Linearity
(1)
Relative Linearity
(2)
Temperature Coefficient of R
TOTAL
Ratiometric Temperature
Coefficient
Potentiometer Capacitances
Rh, RI, Rw leakage current
V
SS
V
CC
V
-120
1.6
dBV
%
MI
(3)
MI
(3)
ppm/°C
ppm/°C
±1
±0.2
±
300
±
20
C
H
/C
L
/C
W
I
AL
10/10/25
0.1
pF
μA
See Circuit #3
Vin = Vss to Vcc. Device is in
stand-by mode.
10