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PDF CAT5126 Data sheet ( Hoja de datos )
| Número de pieza | CAT5126 | |
| Descripción | One-Time Digitally Programmable 32 Tap Potentiometer | |
| Fabricantes | Catalyst Semiconductor | |
| Logotipo |  |
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CAT5126
One-Time Digitally Programmable 32 Tap Potentiometer
FEATURES
Wiper position stored after one-time non-
volatile programming
User-defined Power-On wiper position
32 tap positions
Wiper position programmed through simple
2-wire serial interface
Low 0.35µA (typ) static supply current
2.5V to 5.5V single-supply operation
10kΩ, 50kΩ, and 100kΩ end-to-end resistances
50ppm/°C end-to-end temperature coefficient
and 5ppm/°C ratiometric temperature
coefficient
8-Pin TDFN (2mm x 3mm) and MSOP packages
APPLICATIONS
DESCRIPTION
The CAT5126 is a digital programmable
potentiometer. The wiper position is controlled with a
simple 2-wire digital interface. This digital
potentiometer is unique in that it has an optional one-
time programmable feature that either sets the wiper’s
position upon power-on to a user-defined value, or the
wiper can be set and the interface also disabled to
prevent further adjustment.
The CAT5126 has an end-to-end resistance of 10kΩ,
50kΩ, and 100kΩ. All CAT5126 devices have 32
wiper positions and operate from a single 2.5V to 5.5V
supply.
The CAT5126 is available in 8-pin TDFN and MSOP
packages. Each device is guaranteed over the
industrial temperature range of -40°C to +85°C.
Mechanical potentiometer replacement
www.DataSheet4U.com
Products using one-time factory calibration
For Ordering Information details, see page 10.
Contrast, brightness, volume controls
Programmable analog functions
PIN CONFIGURATION
MSOP (Z)
(top view)
RW 1
8 RH
¯C¯S¯ 2 CAT 7 RL
VDD 3 5126 6 U/D¯
GND 4
5 VPP
TDFN (VP2)
(top view)
RW
¯C¯S¯
VDD
GND
1
2
3
4
8 RH
7 RL
6 U/D¯
5 VPP
FUNCTIONAL DIAGRAM
VDD 3
GND 4
CS 2
U/D 6
VPP 5
UP/DOWN
COUNTER
ONE-TIME
PROGRAM
BLOCK
RH
8
32-POSITION
DECODER
R31
R30
R2
R1
7
RL
RW 1
RW
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 2129 Rev. A
1 page  
CAT5126
TYPICAL OPERATING CHARACTERISTICS
VDD = 2.5V to 5.5V, VPP = GND, VH = VDD, VL = GND, TA = +25°C.
VPP vs. VDD
10 300
IDD programming vs. VDD
9 Valid
Programming
8
7 Invalid
Programming
6
250
200
150
5
2.5
3.5 4.5
VDD (V)
5.5
Wiper Resistance vs. Tap Position @ 25°C
120
100
80
VDD = 2.5V
www.DataSheet4U.com
60
40 VDD = 5V
20
0
0 10 20 30
Tap Position
100
2.5
3.5 4.5
VDD (V)
Wiper Voltage vs. Tap Position
5.5
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0
VDD = 5.0V
VDD = 2.5V
10 20
Tap
30
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. 2129 Rev. A
5 Page 
REVISION HISTORY
Date Rev. Reason
03/14/07 A Initial Issue
Copyrights, Trademarks and Patents
Trademarks and registered trademarks of Catalyst Semiconductor include each of the following:
Beyond Memory™, DPP™, EZDim™, LDD™, MiniPot™, and Quad-Mode™
Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products.
CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS
PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OwFwwI.TDSataPShReOet4DUU.cComTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE
RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING
OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES.
Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal
injury or death may occur.
Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled
"Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale.
Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical
semiconductor applications and may not be complete.
Catalyst Semiconductor, Inc.
Corporate Headquarters
2975 Stender Way
Santa Clara, CA 95054
Phone: 408.542.1000
Fax: 408.542.1200
www.catsemi.com
Document No: 2129
Revision:
A
Issue date: 03/14/07
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet CAT5126.PDF ] | |
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