CAT5409_13 Datasheet, PDF (1/15 Pages) ON Semiconductor – Quad Digital Potentiometer (POT)

CAT5409
Quad Digital
Potentiometer (POT)
with 64 Taps
and I²C Interface
Description
The CAT5409 is four 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 I²C serial bus.
On power-up, the contents of the first data register (DR0) for each of
the four potentiometers is automatically loaded into its respective
wiper control register (WCR).
The Write Protection (WP) pin protects against inadvertent
programming of the data register.
The CAT5409 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
 Four Linear Taper Digital Potentiometers
 64 Resistor Taps per Potentiometer
 End to End Resistance 2.5 kW, 10 kW, 50 kW or 100 kW
 I²C Interface
 Low Wiper Resistance, Typically 80 W
 Four Non-volatile Wiper Settings for Each Potentiometer
 Recall of Saved 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
CAT5409
NC
R_L3
R_H3
R_W3
A₀
NC
A₃
SCL
R_L2
R_H2
R_W2
NC
SOIC−24 (W)
(Top View)
SDA
A₁
R_L1
R_H1
R_W1
GND
NC
R_W2
R_H2
R_L2
SCL
A₃
1
CAT5409
TSSOP−24 (Y)
(Top View)
WP
A₂
R_W0
R_H0
R_L0
V_CC
NC
R_L3
R_H3
R_W3
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. 15
Publication Order Number:
CAT5409/D