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CAT5126 Folha de dados(PDF) 1 Page - Catalyst Semiconductor

Nome de Peças. CAT5126
descrição  One-Time Digitally Programmable 32 Tap Potentiometer
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Fbricantes  CATALYST [Catalyst Semiconductor]
Página de início  http://www.catalyst-semiconductor.com
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CAT5126 Folha de dados(HTML) 1 Page - Catalyst Semiconductor

 
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CAT5126
© 2007 Catalyst Semiconductor, Inc.
1
Doc. No. 2129 Rev. A
Characteristics subject to change without notice
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
Mechanical potentiometer replacement
Products using one-time factory calibration
Contrast, brightness, volume controls
Programmable analog functions
PIN CONFIGURATION
MSOP (Z)
(top view)
RW 1
8 RH
CS
¯¯¯ 2
7 RL
VDD 3
6 U/D
¯
GND 4
5 VPP
CAT
5126
TDFN (VP2)
(top view)
RW
1
8 RH
CS
¯¯¯
2
7 RL
VDD 3
6 U/D
¯
GND
4
5 VPP
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.
FUNCTIONAL DIAGRAM
32-POSITION
DECODER
8
1
7
5
6
2
4
3
VPP
R31
R30
RW
R2
R1
VDD
RH
RL
RW
U/D
UP/DOWN
COUNTER
ONE-TIME
PROGRAM
BLOCK
CS
GND
For Ordering Information details, see page 10.


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