CAT5133 Datasheet, PDF (4/9 Pages) Catalyst Semiconductor – 16 Volt Digitally Programmable Potentiometer (DPP TM) with 128 Taps and an Increment Decrement Interface

CAT5133
Recommended Operating Conditions
V_CC = +2.7 V to +5.5 V
V+ = +8.0 V to +16.0 V
Operating Temperature Range: −40C to +85C
Table 5. POTENTIOMETER CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)
Limits
Symbol
R_POT
R_POT
Parameter
Potentiometer Resistance (10 kW)
Potentiometer Resistance (50 kW)
(Note 12)
Test Conditions
Min
Typ
10
50
Max
Units
kW
kW
R_POT
Potentiometer Resistance (100 kW)
(Note 12)
100
kW
R_TOL
Potentiometer Resistance Tolerance
Power Rating
25C
20
%
50
mW
I_W
Wiper Current
R_W
Wiper Resistance
V_TERM
RES
Voltage on R_W, R_H or R_L
Resolution
3
mA
I_W = +1 mA @ V+ = 12 V
70
150
W
I_W = +1 mA @ V+ = 8 V
110
200
GND = 0 V; V+ = 8 V to 16 V
GND
V+
V
0.78
%
A_LIN
Absolute Linearity (Note 7)
V_W(n)(actual) − V_{W(n)(expected)}
(Notes 10, 11)
1
LSB
(Note 9)
R_LIN
Relative Linearity (Note 8)
V_W(n+1) − [V_W(n) +LSB]
(Notes 10, 11)
0.5
LSB
(Note 9)
TC_RPOT Temperature Coefficient of R_POT
(Note 6)
300
ppm/C
TC_Ratio Ratiometric Temperature Coefficient
(Note 6)
30
ppm/C
C_H/C_L/C_W Potentiometer Capacitances
(Note 6)
10/10/25
pF
fc
Frequency Response
R_POT = 50 kW
0.4
MHz
6. This parameter is tested initially and after a design or process change that affects the parameter.
7. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a
potentiometer.
8. Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potentiometer.
9. LSB = (R_HM − R_LM)/127; where R_HM and R_LM are the highest and lowest measured values on the wiper terminal.
10. n = 1, 2, ..., 127.
11. V⁺ @ R_H; 0 V @ R_L; V_W measured @ R_W, with no load.
12. Contact factory for availability on this version of the CAT5133.
http://onsemi.com
4