X9279_09 Datasheet, PDF (11/18 Pages) Intersil Corporation – Single Digitally-Controlled (XDCP™) Potentiometer

X9279
Absolute Maximum Ratings
Voltage on SCL, SDA any Address Input
with respect to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . -1V to +7V
DV = | (VH - VL) | . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
I_W (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 (I_W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3mA
Power Rating @ +25°C, each pot . . . . . . . . . . . . . . . . . . . . . .50mW
Thermal Information
Thermal Resistance (Typical, Note 9)
θ_JA (°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
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
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
R_TOTAL
R_TOTAL
R_W
R_W
V_TERM
End-to-End Resistance
End-to-End Resistance
End-to-End Resistance Tolerance
Wiper Resistance @ V = 3V
Wiper Resistance @ V = 5V
Voltage on any R_H or R_L Pin
Noise
Resolution
Absolute Linearity (Note 10)
T version
U version
I_W = (V_RH - V_RL)/R_TOTAL
I_W = (V_RH - V_RL)/R_TOTAL
V_SS = 0V
V_SS
Ref: 1V
R_w(n)(actual) - R_{w(n)(expected)} (Note 14)
100
50
-120
0.4
kΩ
kΩ
±20
%
300
Ω
150
Ω
V_CC
V
dBV/√Hz
%
±1
MI
(Note 12)
Relative Linearity (Note 11)
R_{w(n + 1)} - [R_{w(n) + MI}] (Note 14)
±0.2
MI
(Note 12)
Temperature Coefficient of R_TOTAL
±300
ppm/°C
Ratiometric Temp. Coefficient
±20
ppm/°C
C_H/C_L/C_W
NOTES:
Potentiometer Capacitances
See Macro model
10/10/25
pF
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 (R_H - R_L)/255, single pot
13. During power-up V_CC > V_H, V_L, and V_W.
14. n = 0, 1, 2,....,255; m = 0, 1, 2,...., 254.
11
FN8175.4
September 23, 2009