CAT5140 Datasheet, PDF (1/11 Pages) ON Semiconductor – Single Channel 256 Tap DPP with Integrated EEPROM and I2C Control

CAT5140
Single Channel 256 Tap
DPPt with Integrated
EEPROM and I²C Control
The CAT5140 is a single channel non-volatile 256−tap digitally
programmable potentiometer (DPPt). This DPP is comprised of a
series of equal value resistor elements connected between two
externally accessible end points. The tap points between each resistive
element can be selectively connected to the wiper output via internal
CMOS switches forming a linear taper electronic potentiometer.
The CAT5140 contains a volatile wiper register (WR) and an 8−bit
non−volatile EEPROM for wiper position and 5 additional
non−volatile registers for general purpose data storage. Programming
of the registers is controlled via I²C interface. On power up, the wiper
position is reset to the most recent value stored in the non−volatile
memory register (IVR).
The CAT5140 is available in an Pb free, RoHS compliant 8−lead
MSOP package, and operates over the industrial temperature range of
−40°C to +85°C.
Features
• 400 kHz I²C Compatible Interface
• 256 Position Linear Taper Potentiometer
• End−to−End Resistance = 50 kW / 100 kW
• TCR = 100 ppm/°C (typical)
• Standby Current = 2 mA (max)
• Typical Wiper Resistance = 70 W @ 3.3 V
• Operating Voltage = 2.5 V to 5.5 V
• 6 Registers 8−bit Non−volatile EEPROM
• 2,000,000 Data Write Stores
• 100 Year Data Retention
• 8−Lead MSOP Package
• Pb−free RoHS Compliant: NiPdAu Plating
WP
SCL
SDA
GND
Volatile
ACR
WIPER
IVR
GP
GP
GP
Non−Volatile
VCC
R_H
R_L
R_W
Figure 1. Functional Block Diagram
http://onsemi.com
MSOP−8 3x3
Z SUFFIX
CASE 846AD
MARKING DIAGRAM
ABTV
YMX
ABTJ
YMX
1
1
ABTV = 100 kW Resistance
ABTJ = 50 kW Resistance
Y = Production Year
Y = (Last Digit)
M = Production Month
M = (1 − 9, A, B, C)
X = Production Revision
WP
SCL
SDA
GND
PIN CONNECTIONS
1
(Top View)
VCC
R_H
R_L
R_W
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
© Semiconductor Components Industries, LLC, 2009
1
May, 2009 − Rev. 0
Publication Order Number:
CAT5140/D