CAT5419 Datasheet, PDF (3/18 Pages) Catalyst Semiconductor – Dual Digitally Programmable Potentiometers (DPP) with 64 Taps and 2-wire Interface

CAT5419
ABSOLUTE MAXIMUM RATINGS*
Temperature Under Bias .................. -55°C to +125°C
Storage Temperature ........................ -65°C to +150°C
Voltage on any Pin with
Respect to VSS(1)(2) ................ -2.0V to +VCC +2.0V
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 .................................................. +12mA
*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.
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
RPOT
RPOT
RPOT
RPOT
Parameter
Potentiometer Resistance (-00)
Potentiometer Resistance (-50)
Potentiometer Resistance (-10)
Potentiometer Resistance (-2.5)
Potentiometer Resistance
Test Conditions
Min
Typ
Max
Units
100
kΩ
50
kΩ
10
kΩ
2.5
kΩ
+20
%
Tolerance
RPOT Matching
1
%
Power Rating
25°C, each pot
50
mW
IW
Wiper Current
+6
mA
RW
Wiper Resistance
IW = +3mA @ VCC =3V
300
Ω
RW
Wiper Resistance
IW = +3mA @ VCC = 5V
80
150
Ω
VTERM
VN
Voltage on any RH or RL Pin
Noise
VSS = 0V
(1)
GND
TBD
VCC
V
nV/ Hz
Resolution
1.6
%
Absolute Linearity ⁽²⁾
Relative Linearity ⁽³⁾
Rw(n)(actual)-R(n)(expected)(5)
Rw(n+1)-[Rw(n)+LSB]⁽⁵⁾
+1
+0.2
LSB ⁽⁴⁾
LSB ⁽⁴⁾
Temperature Coefficient of
TCRPOT
RPOT
(1)
+300
ppm/°C
TCRATIO
Ratiometric Temp. Coefficient
(1)
20
ppm/°C
CH/CL/CW
Potentiometer Capacitances
(1)
10/10/25
pF
fc
Frequency Response
RPOT = 50kΩ⁽¹⁾
0.4
MHz
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 / 63 or (R_H - R_L) / 63, single pot
(5) n = 0, 1, 2, ..., 63
3
Document No. 2115, Rev. F