CAT5269 Datasheet, PDF (3/15 Pages) Catalyst Semiconductor – Dual Digitally Programmable Potentiometers (DPP) with 256 Taps and 2-wire Interface

CAT5269
ABSOLUTE MAXIMUM RATINGS*
*COMMENT
Temperature Under Bias ................. –55°C to +125°C
Storage Temperature ....................... –65°C to +150°C
Voltage on any Pin with
Respect toVSS(1)(2) ................ –2.0V to +VCC +2.0V
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.
VCC with Respect to Ground ............... –2.0V to +7.0V
Package Power Dissipation
Capability (Ta = 25°C) ................................... 1.0W
Lead Soldering Temperature (10 secs) ............ 300°C
Wiper Current .................................................... +6mA
Recommended Operating Conditions:
V_CC = +2.5V to +6.0V
Temperature
Industrial
Min
-40°C
Max
85°C
Note:
(1) The minimum DC input voltage is –0.5V. During transitions, inputs may undershoot to –2.0V for periods of less than 20 ns.
Maximum DC voltage on output pins is V_CC +0.5V, which may overshoot to V_CC +2.0V 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 –1V to V_CC +1V.
POTENTIOMETER CHARACTERISTICS
(Over recommended operating conditions unless otherwise stated.)
Symbol
Parameter
Min.
Limits
Typ. Max.
R_POT Potentiometer Resistance (100KΩ)
100
RPOT Potentiometer Resistance (50KΩ)
50
Potentiometer Resistance
+20
Tolerance
R_POT Matching
1
Power Rating
50
IW
Wiper Current
+3
R_W
Wiper Resistance
200
300
R_W
Wiper Resistance
100
150
VTERM
Voltage on any RH or RL Pin
VSS
VCC
V_N
Noise
Resolution
0.4
Absolute Linearity ⁽²⁾
+1
Relative Linearity ⁽³⁾
+0.2
TC_RPOT
Temperature Coefficient of
R_POT
+300
TCRATIO Ratiometric Temp. Coefficient
20
C_H/C_L/C_W Potentiometer Capacitances
10/10/25
fc
Frequency Response
0.4
Units
kΩ
kΩ
%
Test Conditions
%
mW
25°C, each pot
mA
Ω
Ω
V
nV/√Hz
I_W = +3mA @ V_CC = 3V
I_W = +3mA @ V_CC = 5V
VSS = 0V
(1)
%
LSB ⁽⁴⁾ Rw(n)(actual)-R(n)(expected)(5)
LSB ⁽⁴⁾
R_w(n+1)-[R_w(n)+LSB]⁽⁵⁾
ppm/˚C
(1)
ppm/˚C
pF
MHz
(1)
(1)
R_POT = 50KΩ⁽¹⁾
Note:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
(2) Absolute linearity is utilitzed 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. It is a measure of the error in step size.
(4) LSB = R_TOT / 255 or (R_H - R_L) / 255, single pot
(5) n = 0, 1, 2, ..., 255
3
Document No. 2123, Rev. B