CAT5419_13 Datasheet, PDF (1/15 Pages) ON Semiconductor – Dual Digital Potentiometer (POT)

CAT5419
Dual Digital
Potentiometer (POT)
with 64 Taps
and 2‐wire Interface
Description
The CAT5419 is two digital POTs integrated with control logic and
16 bytes of NVRAM memory.
A separate 6-bit control register (WCR) independently controls the
wiper tap position for each digital POT. Associated with each wiper
control register are four 6-bit non-volatile memory data registers (DR)
used for storing up to four wiper settings. Writing to the wiper control
register or any of the non-volatile data registers is via a 2-wire serial
bus (I²C-like). On power-up, the contents of the first data register
(DR0) for each of the two potentiometers is automatically loaded into
its respective wiper control registers (WCR).
The Write Protection (WP) pin protects against inadvertent
programming of the data register.
The CAT5419 can be used as a potentiometer or as a two terminal,
variable resistor. It is intended for circuit level or system level
adjustments in a wide variety of applications.
Features
 Two Linear-taper Digital Potentiometers
 64 Resistor Taps per Potentiometer
 End to End Resistance 2.5 kW, 10 kW, 50 kW or 100 kW
 Potentiometer Control and Memory Access via 2-wire Interface
(I²C like)
 Low Wiper Resistance, Typically 80 W
 Four Non-volatile Wiper Settings for Each Potentiometer
 Recall of Wiper Settings at Power Up
 2.5 to 6.0 Volt Operation
 Standby Current less than 1 mA
 1,000,000 Nonvolatile WRITE Cycles
 100 Year Nonvolatile Memory Data Retention
 24-lead SOIC and 24-lead TSSOP
 Write Protection for Data Register
 These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
http://onsemi.com
TSSOP24
Y SUFFIX
CASE 948AR
SOIC−24
W SUFFIX
CASE 751BK
PIN CONNECTIONS
V_CC
R_L0
R_H0
R_W0
A2
WP
SDA
A₁
R_L1
R_H1
R_W1
GND
1
CAT5419
SOIC−24 (W)
(Top View)
NC
NC
NC
NC
A₀
NC
A₃
SCL
NC
NC
NC
NC
SDA
A₁
R_L1
R_H1
R_W1
GND
NC
NC
NC
NC
SCL
A₃
1
CAT5419
TSSOP24 (Y)
(Top View)
WP
A₂
R_W0
R_H0
R_L0
V_CC
NC
NC
NC
NC
A₀
NC
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
 Semiconductor Components Industries, LLC, 2013
1
July, 2013 − Rev. 11
Publication Order Number:
CAT5419/D