CAT5136, CAT5137, CAT5138
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3
Table 4. POTENTIOMETERS CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)
Parameter
Symbol
Test Conditions
Limits
Units
Min
Typ
Max
Potentiometer Resistance (10 kW)
RPOT
10
kW
Potentiometer Resistance (50 kW)
RPOT
50
kW
Potentiometer Resistance (100 kW)
RPOT
100
kW
Potentiometer Resistance Tolerance
RTOL
20
%
Power Rating
25C
50
mW
Wiper Current
IW
3
mA
Wiper Resistance
RW
VDD = 3.3 V
85
200
W
Voltage on RW, RH or RL
VTERM
GND = 0 V; VDD = 2.7 V to +5.5 V
GND
VDD
V
Resolution
RES
0.78
%
Integral Non-Linearity (Note
3)INL
VW(n)(actual) VW(n)(expected)
1
LSB
Differential Non-Linearity (Note
4)DNL
VW(n+1) [VW(n)+LSB] (Notes 6, 7) 1
LSB
Resistor Integral Non-Linearity
RINL
2
LSB
Resistor Differential Non-Linearity
RDNL
Rn [Rn1 + LSB] (Notes 6, 8) 1
LSB
Temperature Coefficient of RPOT
TCRPOT
300
ppm/C
Ratiometric Temperature Coefficient
TCRatio
30
ppm/C
Potentiometer Capacitances
CH/CL/CW
10/10/25
pF
Frequency Response
fc
RPOT
0.4
MHz
2. This parameter is tested initially and after a design or process change that affects the parameter.
3. Integral Non-Linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as
a potentiometer.
4. Differential Non-Linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a
potentiometer.
5. LSB = (RHM RLM)/127; where RHM and RLM are the highest and lowest measured values on the wiper terminal.
6. n = 1, 2, ..., 127
7. VDD @ RH; VW measured @ RW with no load.
8. Rw and RL in the range of 0 V and VDD.
Table 5. D.C. ELECTRICAL CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)
Parameter
Symbol
Test Conditions
Min
Max
Units
Power Supply Current
(Write/Read)
IDD
FSCL = 400 kHz, SDA Open,
VDD = 5.5 V, Input = GND
200
mA
Standby Current
ISB(VDD)
VIN = GND or VDD , SDA = VDD
0.5
mA
Input Leakage Current
ILI
VIN = GND to VDD
1
mA
Output Leakage Current
ILO
VOUT = GND to VDD
1
mA
Input Low Voltage
VIL
0.3
VDD x 0.3
V
Input High Voltage
VIH
VDD x 0.7
VDD + 0.3
V
Output Low Voltage (VDD = 3.0 V)
VOL
IOL = 3 mA
0.4
V