CAT5261
http://onsemi.com
5
Table 4. POTENTIOMETER CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)
Symbol
Parameter
Test Conditions
Limits
Units
Min
Typ
Max
RPOT
Potentiometer Resistance (00)
100
kW
RPOT
Potentiometer Resistance (50)
50
kW
Potentiometer Resistance Tolerance
20
%
RPOT Matching
1
%
Power Rating
25C, each pot
50
mW
IW
Wiper Current
3
mA
RW
Wiper Resistance
IW = 3 mA @ VCC = 3 V
200
300
W
RW
Wiper Resistance
IW = 3 mA @ VCC = 5 V
100
150
W
VTERM
Voltage on any RH or RL Pin
0
VCC
V
VN
Noise
nVHz
Resolution
0.4
%
Absolute Linearity (Note
4)Rw(n)(actual)R(n)(expected)
1
LSB
Relative Linearity (Note
5)Rw(n+1)[Rw(n)+LSB]
0.2
LSB
TCRPOT
Temperature Coefficient of RPOT
300
ppm/C
TCRATIO
Ratiometric Temp. Coefficient
20
ppm/C
CH/CL/CW
Potentiometer Capacitances
10/10/25
pF
fc
Frequency Response
0.4
MHz
1. The minimum DC input voltage is –0.5 V. During transitions, inputs may undershoot to –2.0 V for periods of less than 20 ns. Maximum DC
voltage on output pins is VCC +0.5 V, which may overshoot to VCC +2.0 V for periods of less than 20 ns.
2. Latch-up protection is provided for stresses up to 100 mA on address and data pins from –1 V to VCC +1 V.
3. This parameter is tested initially and after a design or process change that affects the parameter.
4. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a
potentiometer.
5. 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.
6. LSB = RTOT / 255 or (RH RL) / 255, single pot
7. n = 0, 1, 2, ..., 255
Table 5. D.C. OPERATING CHARACTERISTICS (VCC = +2.5 V to +6.0 V, unless otherwise specified.)
Symbol
Parameter
Test Conditions
Min
Max
Units
ICC1
Power Supply Current
fSCL = 400 kHz, SDA = Open
VCC = 6 V, Inputs = GNDs
1
mA
ICC2
Power Supply Current
fSCK = 400 kHz, SDA Open
5
mA
Non-volatile WRITE
VCC = 6 V, Input = GND
ISB
Standby Current (VCC = 5 V)
VIN = GND or VCC, SDA = Open
1
mA
ILI
Input Leakage Current
VIN = GND to VCC
10
mA
ILO
Output Leakage Current
VOUT = GND to VCC
10
mA
VIL
Input Low Voltage
1
VCC x 0.3
V
VIH
Input High Voltage
VCC x 0.7
VCC + 1.0
V
VOL1
Output Low Voltage (VCC = 3 V)
IOL = 3 mA
0.4
V
VOH1
Output High Voltage
IOH = 1.6 mA
VCC – 0.8
V