DataSheetWiki


CAT525 fiches techniques PDF

Catalyst Semiconductor - Configured Digitally Programmable Potentiometer (DPP): Programmable Voltage Applications

Numéro de référence CAT525
Description Configured Digitally Programmable Potentiometer (DPP): Programmable Voltage Applications
Fabricant Catalyst Semiconductor 
Logo Catalyst Semiconductor 





1 Page

No Preview Available !





CAT525 fiche technique
CAT525
Configured Digitally Programmable Potentiometer (DPP™): Programmable Voltage Applications
FEATURES
APPLICATIONS
s Four 8-bit DPPs configured as programmable
voltage sources in DAC-like applications
s Independent reference inputs
s Buffered wiper outputs
s Non-volatile NVRAM memory wiper storage
s Output voltage range includes both supply rails
s 4 independently addressable buffered
output wipers
s 1 LSB accuracy, high resolution
s Serial µP interface
s Single supply operation: 2.7V-5.5V
s Setting read-back without effecting outputs
DESCRIPTION
The CAT525 is a quad 8-Bit digitally programmable
potentiometer (DPP™) configured for programmable
voltage and DAC-like applications. Intended for final
calibration of products such as camcorders, fax ma-
chines and cellular telephones on automated high vol-
ume production lines and systems capable of self cali-
bration, it is also well suited for applications were equip-
ment requiring periodic adjustment is either difficult to
access or located in a hazardous environment.
The CAT525 offers four independently programmable
DPPs each having its own reference inputs and each
capable of rail to rail output swing. The wipers are
buffered by rail to rail op amps. Wiper settings, stored in
non-volatile NVRAM memory, are not lost when the
device is powered down and are automatically rein-
s Automated product calibration
s Remote control adjustment of equipment
s Offset, gain and zero adjustments in
self-calibrating and adaptive control systems
s Tamper-proof calibrations
s DAC (with memory) substitute
stated when power is returned. Each wiper can be
dithered to test new output values without effecting the
stored settings and stored settings can be read back
without disturbing the DPP’s output.
Control of the CAT525 is accomplished with a simple 3
wire serial interface. A Chip Select pin allows several
CAT525's to share a common serial interface and
communications back to the host controller is via a single
serial data line thanks to the CAT525’s Tri-Stated Data
Output pin. A RDY/BSY output working in concert with
an internal low voltage detector signals proper operation
of non-volatile NVRAM Memory Erase/Write cycle.
The CAT525 is available in the 0°C to 70°C commercial
and –40°C to 85°C industrial operating temperature
ranges and offered in 20-pin plastic DIP and Surface
mount packages.
FUNCTIONAL DIAGRAM
VREF H1 VREF H3
VREF H2
VREF H4
2 1 20 19
RDY/BSY
5
PROG
9
PROGRAM
CONTROL
+
CLK
4
6
CS
7
DATA
CONTROLLER
CAT525
H.V.
CHARGE
PUMP
NVRAM
+
+
SERIAL
DATA
OUTPUT
REGISTER
+
7K
(ea)
11 12 13 14
VREFL2 VREFL4
VREFL1 VREFL3
18
VOUT1
17
VOUT2
16
VOUT3
15
VOUT4
8
DO
PIN CONFIGURATION
DIP Package (P)
VREF H2
VREF H1
DVD
CLK
RDY/BSY
CS
DI
DO
PROG
GND
1 20
2 19
3 18
4 17
5 16
6 15
CAT525
7 14
8 13
9 12
10 11
VREF H3
VREF H4
VOUT1
VOUT2
VOUT3
VOUT4
VREF L4
VREF L3
VREF L2
VREF L1
SOIC Package (J)
VREF H2
VREF H1
DVD
CLK
RDY/BSY
CS
DI
DO
PROG
GND
1 20
2 19
3 18
4 17
5 16
6 15
CAT525
7 14
8 13
9 12
10 11
VREF H3
VREF H4
VOUT1
VOUT2
VOUT3
VOUT4
VREF L4
VREF L3
VREF L2
VREF L1
© 2001 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 25078-00 4/01-A M-1

PagesPages 12
Télécharger [ CAT525 ]


Fiche technique recommandé

No Description détaillée Fabricant
CAT52045 Attenuator 5 Section DAICO Industries
DAICO Industries
CAT521 8-Bit Digital POT With Independent Reference Inputs Catalyst Semiconductor
Catalyst Semiconductor
CAT522 8-Bit Dual Digital POT With Independent Reference Inputs Catalyst Semiconductor
Catalyst Semiconductor
CAT5221 Dual Digital Potentiometer ON Semiconductor
ON Semiconductor

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche