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CAT515JITE13

更新时间： 2025-07-21 04:52:03
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CATALYST 电位器
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12页 87K
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8-Bit Quad Digital POT with Independent Reference Inputs

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CAT515JITE13 数据手册

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CAT515  
8-Bit Quad Digital POT with Independent Reference Inputs  
FEATURES  
APPLICATIONS  
■ Output settings retained without power  
■ Independent Reference Inputs  
■ Automated product calibration.  
■ Remote control adjustment of equipment  
■ Output range includes both supply rails  
■ Programming voltage generated on-chip  
■ 4 independently addressable outputs  
■ Serial µP interface  
■ Offset, gain and zero adjustments in Self-  
Calibrating and Adaptive Control systems.  
■ Tamper-proof calibrations.  
■ Single supply operation: 2.7V-5.5V  
DESCRIPTION  
Control of the CAT515 is accomplished with a simple 3  
wire serial interface. A Chip Select pin allows several  
CAT515's to share a common serial interface and com-  
munications back to the host controller is via a single  
serial data line thanks to the CAT515’s Tri-Stated Data  
Output pin. A RDY/BSYoutput working in concert with  
aninternallowvoltagedetectorsignalsproperoperation  
of EEPROM Erase/Write cycle.  
The CAT515 is a quad 8-Bit Memory DAC designed as  
an electronic replacement for mechanical potentiom-  
eters and trim pots. Intended for final calibration of  
productssuchascamcorders,faxmachinesandcellular  
telephones on automated high volume production lines  
and systems capable of self calibration, it is also well  
suited for applications were equipment requiring peri-  
odic adjustment is either difficult to access or located in  
a hazardous environment.  
The CAT515 operates from a single 3–5 volt power  
supply. The high voltage required for EEPROM Erase/  
Write operations is generated on-chip.  
TheCAT515offers4independentlyprogrammableDACs  
each having its own reference inputs and each capable  
of rail to rail output swing. Output settings, stored non-  
volatile EEPROM memory, are not lost when the device  
is powered down and are automatically reinstated when  
power is returned. Each output can be dithered to test  
new output values without effecting the stored settings  
and stored settings can be read back without disturbing  
the DAC’s output.  
The CAT515 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  
PIN CONFIGURATION  
V
DD  
3
8
5
9
RDY/BSY  
PROG  
SERIAL DATA OUTPUT  
DO  
V
DIP Package (P)  
SOIC Package (J)  
2
H1  
1
H4  
H3  
H4  
H4  
H3  
H4  
REF  
1
2
3
4
5
20  
19  
18  
17  
16  
1
2
3
4
5
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
V
V
V
V
V
V
V
V
PROGRAM  
CONTROL  
REF  
REF  
REF  
REF  
EEPROM  
18  
LATCH  
DAC 1  
V
OUT  
REF  
H1  
V
H1  
V
REF  
REF  
V
V
REF  
REF  
11  
1
V
V
L1  
H2  
1
1
OUT  
D D  
CLK  
D D  
CLK  
OUT  
REF  
EEPROM  
LATCH  
4
6
17  
V
2
3
V
2
3
CLK  
CS  
DI  
DAC 2  
V
2
OUT  
OUT  
OUT  
DATA  
CONTROLLER  
12  
20  
V
V
V
V
V
L2  
H3  
RDY/BSY  
CS  
RDY/BSY  
CS  
REF  
OUT  
OUT  
CAT515  
CAT515  
V
REF  
4
4
7
15  
14  
13  
12  
11  
6
7
6
7
EEPROM  
LATCH  
OUT  
OUT  
16  
V
3
DAC 3  
OUT  
L4  
L4  
V
V
V
V
DI  
DO  
DI  
DO  
13  
19  
REF  
REF  
V
V
L3  
H4  
REF  
REF  
L3  
L3  
8
9
8
9
REF  
REF  
EEPROM  
LATCH  
H.V.  
CHARGE  
PUMP  
15  
14  
DAC 4  
V
4
OUT  
REF  
V
L2  
L1  
V
L2  
L1  
PROG  
GND  
PROG  
GND  
REF  
REF  
REF  
REF  
V
L4  
CAT515  
10  
V
10  
V
10  
GND  
© 2000 by Catalyst Semiconductor, Inc.  
Doc. No. 25077-00 2/98 M-1  
Characteristics subject to change without notice  
1
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