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CAT511 Dataheets PDF



Part Number CAT511
Manufacturers Catalyst Semiconductor
Logo Catalyst Semiconductor
Description 8-Bit Digital POT with Independent Reference Inputs
Datasheet CAT511 DatasheetCAT511 Datasheet (PDF)

Advanced Information CAT511 8-Bit Digital POT with Independent Reference Inputs FEATURES s Output settings retained without power s Output range includes both supply rails s Programming voltage generated on-chip 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 CAT511.

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Advanced Information CAT511 8-Bit Digital POT with Independent Reference Inputs FEATURES s Output settings retained without power s Output range includes both supply rails s Programming voltage generated on-chip 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 CAT511 is an 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 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 CAT511 consists of a programmable DAC with independent high and low reference inputs and is capable of a 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. The output can be dithered to test new output values without effecting the stored setting and can be read back without disturbing the DAC’s output. FUNCTIONAL DIAGRAM VDD Control of the CAT511 is accomplished with a simple 3 wire serial interface. A Chip Select pin allows several CAT511's to share a common serial interface and communications back to the host controller is via a single serial data line thanks to the CAT511’s Tri-Stated Data Output pin. A RDY/BSYoutput working in concert with an internal low voltage detector signals proper operation of EEPROM Erase/Write cycle. The CAT511 operates from a single 3–5 volt power supply. The high voltage required for EEPROM Erase/ Write operations is generated on-chip. The CAT511 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. PIN CONFIGURATION 1 6 RDY/BSY 3 SERIAL DATA OUTPUT DO DIP Package (P) 1 2 3 4 CAT511 SOIC Package (J) VDD CLK RDY/BSY CS DI DO PROG 1 2 3 4 CAT511 PROG 7 PROGRAM CONTROL 14 EEPROM LATCH DAC 1 VREF H1 1 V OUT V REF L1 VDD CLK RDY/BSY CS DI DO PROG 14 13 12 11 10 9 8 VREF H1 NC VOUT1 NC NC VREF L1 GND 14 13 12 11 10 9 8 VREF H1 NC VOUT1 NC NC VREF L1 GND 12 9 CLK 2 DATA CONTROLLER CS 4 DI 5 5 6 7 5 6 7 H.V. CHARGE PUMP CAT511 8 GND © 2001 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice 1 CAT511 ABSOLUTE MAXIMUM RATINGS Supply Voltage* VDD to GND ...................................... –0.5V to +7V Inputs CLK to GND ............................ –0.5V to VDD +0.5V CS to GND .............................. –0.5V to VDD +0.5V DI to GND ............................... –0.5V to VDD +0.5V RDY/BSY to GND ..


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