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CAT522PITE13 Datasheet(PDF) 1 Page - Catalyst Semiconductor |
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CAT522PITE13 Datasheet(HTML) 1 Page - Catalyst Semiconductor |
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1 / 10 page  1 GND DAC 2 EEPROM LATCH EEPROM LATCH 11 DAC 1 12 PROG RDY/ BSY PROGRAM CONTROL H.V. CHARGE PUMP SERIAL DATA OUTPUT V 2 OUT 10 V L2 REF V H2 REF V 1 OUT V L1 REF V H1 REF DO VDD DATA CONTROLLER 13 14 3 CLK CS 2 4 5 7 9 8 1 6 DI + – + – DO PROG RDY/BSY CLK 1 2 3 4 5 6 7 14 13 12 11 8 10 9 VDD VREF H2 VREF H1 GND VOUT1 V OUT 2 CS DI VREF L2 VREF L1 DO PROG RDY/BSY CLK 1 2 3 4 5 6 7 14 13 12 11 8 10 9 VDD VREF H2 VREF H1 GND VOUT1 V OUT 2 CS DI VREF L2 VREF L1 CAT522 8-Bit Dual Digital POT With Independent Reference Inputs FEATURES s Buffered Outputs s Output settings retained without power s Independent Reference Inputs s Output range includes both supply rails s Programming voltage generated on-chip s 2 independently addressable outputs s Serial µP interface s Single supply operation: 2.7V-5.5V 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 CAT522 is a dual 8-Bit Memory DAC designed as an electronic replacement for mechanical potentiometers and trim pots. Intended for final calibration of products such as camcorders, fax machines and cellular tele- phones on automated high volume production lines and systems capable of self calibration, it is also well suited for applications were equipment requiring periodic ad- justment is either difficult to access or located in a hazardous environment. The CAT522 offers 2 independently programmable DACs each having its own reference inputs and each capable of rail to rail output swing. Outputs are buffered by rail to rail OP AMPS 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 FUNCTIONAL DIAGRAM PIN CONFIGURATION and stored settings can be read back without disturbing the DAC’s output. Control of the CAT522 is accomplished with a simple 3 wire serial interface. A Chip Select pin allows several CAT522'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 CAT522’s Tri-Stated Data Output pin. A RDY/ BSY output working in concert with an internal low voltage detector signals proper operation of EEPROM Erase/Write cycle. The CAT522 operates from a single 3–5 volt power supply. The high voltage required for EEPROM Erase/ Write operations is generated on-chip. The CAT522 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 Surface mount packages. DIP Package (P) SOIC Package (J) CAT522 © 2000 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice Advanced Information CAT522 CAT522 |
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Similar Description - CAT522PITE13 |
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