CAT5132 Datasheet, PDF (3/13 Pages) Catalyst Semiconductor – 15 Volt Digitally Programmable Potentiometer (DPP) with 128 Taps and 2-wire Interface

CAT5132
ABSOLUTE MAXIMUM RATINGS
Temperature Under Bias....................-55˚C to +125˚C
Storage Temperature ........................ -65˚C to +150˚C
Voltage on any SDA, SCL, A0 & A1 pins with respect
to Ground ⁽¹⁾⁽²⁾ .............................. -2.0V to VCC + 2.0V
Voltage on RH, RL & RW Pins with respect
to Ground .................................... -2.0V to “V+” + 1.0V
VCC with respect to Ground ................... -2.0V to 7.0V
V+ with respect to Ground ................... -2.0V to 16.0V
Wiper Current (10 sec) ...................................... +6mA
Lead Soldering temperature (10 sec) .............. +300˚C
RECOMMENDED OPERATING CONDITIONS
VCC = +2.7V to +5.5V
V+ = 8.0V to +15V
Operating Temperature Range: -40˚C to +85˚C
COMMENT
Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions outside of those listed
in the operational sections of this specification is not implied. Exposure to any
absolute maximum rating for extended periods may affect device performance
and reliability.
POTENTIOMETER CHARACTERISTICS
(Over recommended operating conditions unless otherwise stated.)
Symbol
Parameter
Test Conditions
R_POT Potentiometer Resistance (100kΩ)
R_POT Potentiometer Resistance (50kΩ)
R_POT Potentiometer Resistance (10kΩ)
R_TOL Potentiometer Resistance Tolerance
Power Rating
I_W
Wiper Current
R
Wiper Resistance
W
V_TERM
RES
A_LIN
R_LIN
TC_RPOT
TC_Ratio
C_H/C_L/C_W
fc
Voltage on R_W, R_H or R_L
Resolution
Absolute Linearity ⁽²⁾
Relative Linearity ⁽³⁾
Temperature Coefficient of R_POT
Ratiometric Temperature Coefficient
Potentiometer Capacitances
Frequency Response
25• C
I_W = +1mA @ V+ = 12V
I_W = +1mA @ V+ = 8V
GND = 0V; V+ = 8V to 15V
R - R _W(n)(actual)
(5)
W(n)(expected)
R_W(n+1) - [R_W(n)+LSB]⁽⁵⁾
(1)
(1)
(1)
R
POT
=
50kΩ
Min
GND
Limits
Typ
100
50
10
70
110
0.78
+300
10/10/25
0.4
Max
+20
50
+3
150
200
V+
+1
+0.5
30
Units
kΩ
kΩ
kΩ
%
mW
mA
Ω
Ω
V
%
LSB ⁽⁴⁾
LSB ⁽⁴⁾
ppm/• C
ppm/• C
pF
MHz
Notes:
1. This parameter is tested initially and after a design or process change that affects the parameter.
2. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a
potentiometer.
3. Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potentiometer.
4. LSB = (R_{HM -} R_LM)/127; where R_HM and R_LM are the highest and lowest measured values on the wiper terminal.
5. n = 1, 2, ..., 127
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc No. 25092, Rev. 00