|
|
PDF CAT5126 Data sheet ( Hoja de datos )
| Número de pieza | CAT5126 | |
| Descripción | One-time Digital 32-tap Potentiometer | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de CAT5126 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
|
No Preview Available !
CAT5126
One‐time Digital 32‐tap
Potentiometer (POT)
Description
The CAT5126 is a digital POT. 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 10 kW, 50 kW, and
100 kW. All CAT5126 devices have 32-wiper positions and operate
from a single 2.5 V to 5.5 V supply.
The CAT5126 is available in TDFN 8-pad and MSOP 8-lead
packages. Each device is guaranteed over the industrial temperature
range of −40C to +85C.
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 0.35 mA (typ) Static Supply Current
2.5 V to 5.5 V Single-supply Operation
10 kW, 50 kW, and 100 kW End-to-End Resistances
50 ppm/C End-to-End Temperature Coefficient and 5 ppm/C
Ratiometric Temperature Coefficient
TDFN 8-pad (2 3 mm) and MSOP 8-lead Packages
These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
Mechanical Potentiometer Replacement
Products using One-time Factory Calibration
Contrast, Brightness, Volume Controls
Programmable Analog Functions
http://onsemi.com
MSOP−8
Z SUFFIX
CASE 846AD
TDFN−8
VP2 SUFFIX
CASE 511AK
PIN CONFIGURATIONS
1
RW RH
CS RL
VDD
U/D
GND
VPP
MSOP (Z)
RW
CS
VDD
GND
1
TDFN (VP2)
(Top Views)
RH
RL
U/D
VPP
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
Semiconductor Components Industries, LLC, 2013
June, 2013 − Rev. 4
1
Publication Order Number:
CAT5126/D
1 page  
CAT5126
Detailed Description
The CAT5126 devices are 10 kW/50 kW/100 kW
(end-to-end resistance) digitally controlled potentiometers.
They have 32-tap positions that are accessible to the wiper
along the resistor array between RH and RL.
The wiper (RW) position is adjusted sequentially through
the tap positions using a simple I2C interface. These digital
potentiometers have an optional one-time programmable
feature that sets the POR position of the wiper. The I2C
interface can then be disabled, permanently preventing
unwanted adjustment.
Digital Interface Operation
The CAT5126 devices have two modes of operation when
the serial interface is active: increment mode and decrement
mode. The serial interface is only active when CS is low.
The CS and U/D inputs control the position of the wiper
along the resistor array. When CS transitions from high to
low, the part goes into increment mode if U/D is high
(Figure 6), and into decrement mode if U/D is low
(Figure 7). Once the mode is set, the device remains in that
mode until CS goes high. A low-to-high transition at the U/D
increments or decrements the wiper position depending on
the current mode.
The value of the counter is then stored and the wiper
position is maintained till the device is Powered down.
The wiper performs a make-before-break transition,
ensuring that there is never an open circuit during a
transition from one resistor tap to another. When the wiper
is at either end (max/min) of the resistor array, additional
transitions in the direction of the endpoint do not change the
counter value (the counter does not wrap around).
One−Time Programming
The factory-set default position of the wiper on power-up
is tap 16. However, the power-up position can be changed
once using the one-time programming feature. After the
wiper is moved to the desired position, the programming
sequence is initiated by setting U/D high, applying 10 V to
VPP, and then taking CS low. Five pulses on CS (consisting
of CS starting from low and going high for tCH and then low
for tCL) program the device (Figure 8). The programming
voltage should then be taken to zero. After the device is
programmed, VPP can be set to zero or be allowed to float.
The wiper position is still adjustable, but always returns to
this programmed position on power−up.
VDD
CS
tUP
tCU tCI tIL
tIH
tIC
U/D
tIW
VW
Figure 6. Increment Mode Serial Interface Timing Diagram
VDD
CS
U/D
VW
tUP
tCU
tCI
tIH
tIW
tIL
tIC
Figure 7. Decrement Mode Serial Interface Timing Diagram
http://onsemi.com
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet CAT5126.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| CAT512 | 8-Bit Dual Digital POT with Independent Reference Inputs |  Catalyst Semiconductor |
| CAT5120 | (CAT5120 - CAT5122) 16-Tap MiniPot TM Digitally Programmable Potentiometers | Catalyst Semiconductor |
| CAT5120 | 16-Tap MiniPot Digitally Programmable Potentiometers | ON Semiconductor |
| CAT5121 | (CAT5120 - CAT5122) 16-Tap MiniPot TM Digitally Programmable Potentiometers | Catalyst Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |