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CAT525_0711 Fiches technique(PDF) 1 Page - Catalyst Semiconductor

No de pièce CAT525_0711
Description  Quad Digitally Programmable Potentiometer (DPP™) with 256 Taps and Microwire Interface
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Fabricant  CATALYST [Catalyst Semiconductor]
Site Internet  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT525_0711 Fiches technique(HTML) 1 Page - Catalyst Semiconductor

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CAT525
© Catalyst Semiconductor, Inc.
1
Doc. No. MD-2001 Rev. H
Characteristics subject to change without notice
Quad Digitally Programmable Potentiometer (DPP™) with
256 Taps and Microwire Interface
FEATURES
Four 8-bit DPPs configured as programmable
voltage sources in DAC-like applications
Independent reference inputs
Buffered wiper outputs
Non-volatile NVRAM memory wiper storage
Output voltage range includes both supply rails
4 independently addressable buffered output
wipers
1 LSB accuracy, high resolution
Serial Microwire-like interface
Single supply operation: 2.7V - 5.5V
Setting read-back without effecting outputs
For Ordering Information details, see page 15.
APPLICATIONS
Automated product calibration
Remote control adjustment of equipment
Offset, gain and zero adjustments in self-
calibrating and adaptive control systems
Tamper-proof calibrations
DAC (with memory) substitute
PIN CONFIGURATION
PDIP 20-Lead (L)
SOIC 20-Lead (W)
VREFH2
1
20 VREFH3
VREFH1
2
19 VREFH4
VDD
3
18 VOUT1
CLK
4
17 VOUT2
RDY/BSY
¯¯¯¯
5
16 VOUT3
CS
6
15 VOUT4
DI
7
14 VREFL4
DO
8
13 VREFL3
PROG
9
12 VREFL2
GND 10
11 VREFL1
CAT525
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
machines and cellular telephones on automated high
volume production lines and systems capable of self
calibration, it is also well suited for applications were
equipment 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
reinstated 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
3wire, Microwire-like 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 com–
mercial and -40°C to 85°C industrial operating
temperature ranges and offered in 20-pin plastic DIP
and surface mount packages.


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Numéro de composants électroniques

No de pièceDescriptionHtml ViewFabricant
CAT524_07 Quad Digitally Programmable Potentiometer DPP™ with 256 Taps and Microwire Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT523_07 Dual Digitally Programmable Potentiometer DPP™ with 256 Taps and Microwire Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5401_07 Quad Digitally Programmable Potentiometers DPP™ with 64 Taps and SPI Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5269_07 Dual Digitally Programmable Potentiometers DPP™ with 256 Taps and 2-wire Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5419_07 Dual Digitally Programmable Potentiometers DPP™ with 64 Taps and 2-wire Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5133 16 Volt Digitally Programmable Potentiometer DPP TM with 128 Taps and an Increment Decrement Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5411_07 Dual Digitally Programmable Potentiometers DPP TM with 64 Taps and SPI Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5111_07 100-Tap Digitally Programmable Potentiometer DPP™ with Buffered Wiper 1  2  3  4  5  More Catalyst Semiconductor
CAT5112_07 32-Tap Digitally Programmable Potentiometer DPP™ with Buffered Wiper 1  2  3  4  5  More Catalyst Semiconductor
LM95234 Quad Remote Diode and Local Temperature Sensor with SMBus Interface and TruTherm™ Technology 1  2  3  4  5  National Semiconductor (TI)

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