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CAT504PITE13 Datasheet(PDF) 1 Page - Catalyst Semiconductor |
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CAT504PITE13 Datasheet(HTML) 1 Page - Catalyst Semiconductor |
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1 / 12 page  1 © 1998 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice PROG PROGRAM CONTROL DI CS DATA REGISTER & EEPROM 13 CLK SERIAL CONTROL DAC 2 DAC 3 DAC 4 11 10 6 V 1 OUT V 2 OUT V 3 OUT V 4 OUT DO SERIAL DATA OUTPUT REGISTER 89 GND V L REF V H REF V PP V DD 31 14 7 5 2 4 DAC 1 12 FEATURES s Output settings retained without power s Output range includes both supply rails s 4 independently addressable outputs s 1 LSB Accuracy s Serial µP interface s Single supply operation: 2.7V-5.5V s Setting read-back without effecting outputs APPLICATIONS 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. DESCRIPTION The CAT504 is a quad 8-Bit Memory DAC designed as an electronic replacement for mechanical potentiom- eters and trim pots. Intended for final calibration of products such as camcorders, fax machines and cellular telephones on automated high volume production lines, it is also well suited for systems capable of self calibra- tion, and applications where equipment which is either difficult to access or in a hazardous environment, re- quires periodic adjustment. The 4 independently programmable DAC's have an output range which includes both supply rails. Output settings, stored in 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. Control of the CAT504 is accomplished with a simple 3 wire serial interface. A Chip Select pin allows several CAT504s to share a common serial interface and com- munication back to the host controller is via a single serial data line thanks to the CAT504’s Tri-Stated Data Output pin. The CAT504 operates from a single 3–5 volt power supply drawing just a few milliwatts of power. When storing data in EEPROM memory an additional 20 volt low current supply is required. The CAT504 is available in the 0 to 70 ° C Commercial and –40 ° C to + 85° C Industrial operating temperature ranges and offered in 14-pin plastic DIP and Surface mount packages. FUNCTIONAL DIAGRAM PIN CONFIGURATION CAT504 8-Bit Quad DACpot DIP Package (P) SOIC Package (J) CAT504 VPP CLK CS PROG DI DO VDD 2 3 4 13 12 11 5 6 7 10 9 8 114 GND VREFH VOUT1 VOUT2 VOUT3 VOUT4 VREFL VPP CLK CS PROG DI DO VDD 2 3 4 13 12 11 5 6 7 10 9 8 114 GND VREFH VOUT1 VOUT2 VOUT3 VOUT4 VREFL CAT 504 CAT 504 Doc. No. 25048-0A 2/98 M-1 |
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