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11
FN8175.4
September 23, 2009
Absolute Maximum Ratings
Thermal Information
Voltage on SCL, SDA any Address Input
with respect to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . -1V to +7V
DV = | (VH - VL) | . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
IW (10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±6mA
Operating Conditions
Temperature Range
Commercial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +70°C
Industrial. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Supply Voltage VCC Limits (Note
13)
X9279 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V ± 10%
X9279-2.7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
Wiper Max Current (IW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3mA
Power Rating @ +25°C, each pot . . . . . . . . . . . . . . . . . . . . . .50mW
Thermal Resistance (Typical, Note
9)θJA (°C/W)
14 Lead TSSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . .
90
Temperature Under Bias . . . . . . . . . . . . . . . . . . . . . -65°C to +135°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTE:
9.
θ
JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Analog Characteristics Operating Conditions over recommended industrial (2.7V) unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
RTOTAL
End-to-End Resistance
T version
100
k
Ω
RTOTAL
End-to-End Resistance
U version
50
k
Ω
End-to-End Resistance Tolerance
±20
%
RW
Wiper Resistance @ V = 3V
IW = (VRH - VRL)/RTOTAL
300
Ω
RW
Wiper Resistance @ V = 5V
IW = (VRH - VRL)/RTOTAL
150
Ω
VTERM
Voltage on any RH or RL Pin
VSS = 0V
VSS
VCC
V
Noise
Ref: 1V
-120
dBV
/√Hz
Resolution
0.4
%
Absolute Linearity (Note
10)Rw(n)(actual) - Rw(n)(expected) (Note 14) ±1
MI
Relative Linearity (Note
11)
Rw(n + 1) - [Rw(n) + MI] (Note 14) ±0.2
MI
Temperature Coefficient of RTOTAL
±300
ppm/°C
Ratiometric Temp. Coefficient
±20
ppm/°C
CH/CL/CW
Potentiometer Capacitances
See Macro model
10/10/25
pF
NOTES:
10. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a
potentiometer.
11. 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.
12. MI = RTOT / 255 or (RH - RL)/255, single pot
13. During power-up VCC > VH, VL, and VW.
14. n = 0, 1, 2,....,255; m = 0, 1, 2,...., 254.
X9279