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CAT523L-TE10

更新时间： 2024-11-26 04:01:19
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Configured Digitally Programmable Potentiometer

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CAT523L-TE10 数据手册

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E
CAT523  
Configured Digitally Programmable Potentiometer (DPP™):  
Programmable Voltage Applications  
TM  
APPLICATIONS  
■ Automated product calibration.  
FEATURES  
■ Two 8-bit DPPs configured as programmable  
voltage sources in DAC-like applications  
■ Remote control adjustment of equipment  
■ Common reference inputs  
■ Offset, gain and zero adjustments in self-  
■ Non-volatile NVRAM memory wiper storage  
■ Output voltage range includes both supply rails  
calibrating and adaptive control systems.  
■ Tamper-proof calibrations.  
■ 2 independently addressable buffered  
■ DAC (with memory) substitute  
output wipers  
■ 1 LSB accuracy, high resolution  
■ Serial microwire-like interface  
■ Single supply operation: 2.7V - 5.5V  
■ Setting read-back without effecting outputs  
DESCRIPTION  
values without effecting the stored settings and stored  
settings can be read back without disturbing the  
DPP’s output.  
The CAT523 is a dual, 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  
volumeproductionlines, itisalsowellsuitedforsystems  
capable of self calibration, and applications where  
equipment which is either difficult to access or in a  
hazardous environment, requires periodic adjustment.  
Control of the CAT523 is accomplished with a simple 3-  
wire, Microwire-like serial interface. A Chip Select pin  
allows several CAT523's to share a common serial  
interface and communication back to the host controller  
is via a single serial data line thanks to the CAT523’s Tri-  
Stated Data Output pin. A RDY/BSY output working in  
concert with an internal low voltage detector signals  
properoperationofnon-volatileNVRAMmemoryErase/  
Write cycle.  
The two independently programmable DPPs have a  
common output voltage range which includes both  
supply rails. 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  
The CAT523 is available in the 0°C to 70°C Commercial  
and -40°C to + 85°C Industrial operating temperature  
ranges and offered in 14-pin plastic DIP and SOIC  
mount packages.  
PIN CONFIGURATION  
FUNCTIONAL DIAGRAM  
RDY/BSY  
V
V
DD  
REFH  
SOIC Package (J, W)  
DIP Package (P, L)  
14  
3
1
7
PROGRAM  
CONTROL  
V
V
PROG  
V
V
V
V
1
2
3
4
5
6
14  
13  
12  
11  
10  
9
1
2
3
4
5
6
14  
13  
12  
11  
10  
9
DD  
CLK  
DD  
REFH  
REFH  
CLK  
OUT1  
OUT1  
RDY/BSY  
V
V
RDY/BSY  
CS  
OUT2  
NC  
OUT2  
NC  
CAT  
523  
CAT  
523  
CS  
DI  
5
2
DI  
13  
12  
+
+
DI  
NC  
V
WIPER  
CONTROL  
REGISTER  
AND  
NC  
V
V
OUT1  
DO  
DO  
SERIAL  
CONTROL  
REFL  
REFL  
CLK  
PROG  
GND  
PROG  
GND  
8
NVRAM  
7
7
8
4
CS  
V
OU  
SERIAL  
DATA  
OUTPUT  
REGISTER  
6
DO  
CAT523  
8
9
GND  
V
REFL  
© 2004 by Catalyst Semiconductor, Inc.  
Doc. No. 2005, Rev. E  
1
Characteristics subject to change without notice  
1234567...11

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