CAT5411_13 Datasheet, PDF (1/14 Pages) ON Semiconductor – Dual Digital Potentiometer (POT)

CAT5411
Dual Digital
Potentiometer (POT)
with 64 Taps
and SPI Interface
Description
The CAT5411 is two digital potentiometers (POTs) integrated with
control logic and 16 bytes of NVRAM memory. Each digital POT
consists of a series of 63 resistive elements connected between two
externally accessible end points. The tap points between each resistive
element are connected to the wiper outputs with CMOS switches. A
separate 6-bit control register (WCR) independently controls the
wiper tap switches 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 SPI serial bus.
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 register.
The CAT5411 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 SPI Interface:
Mode (0, 0) and (1, 1)
 Low Wiper Resistance, Typically 80 W
 Nonvolatile Memory Storage for up to Four Wiper Settings for Each
Potentiometer
 Automatic Recall of Saved Wiper Settings at Power Up
 2.5 to 6.0 Volt Operation
 Standby Current less than 1 mA
 24-lead SOIC and 24-lead TSSOP
 Industrial Temperature Ranges
 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
CS
WP
SI
A₁
R_L1
R_H1
R_W1
GND
1
CAT5411
SOIC−24 (W)
(Top View)
NC
NC
NC
NC
A₀
SO
HOLD
SCK
NC
NC
NC
NC
SI
A₁
R_L1
R_H1
R_W1
GND
NC
NC
NC
NC
SCK
HOLD
1
CAT5411
TSSOP24 (Y)
(Top View)
WP
CS
R_W0
R_H0
R_L0
V_CC
NC
NC
NC
NC
A₀
SO
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
 Semiconductor Components Industries, LLC, 2013
1
July, 2013 − Rev. 13
Publication Order Number:
CAT5411/D