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TC835CKW Datasheet(PDF) 1 Page - Microchip Technology |
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TC835CKW Datasheet(HTML) 1 Page - Microchip Technology |
1 / 24 page © 2002 Microchip Technology Inc. DS21478B-page 1 TC835 Features • Upgrade of Pin-Compatible TC7135, ICL7135 • 200kHz Operation • Single 5V Operation With TC7660 • Multiplexed BCD Data Output • UART and Microprocessor Interface • Control Outputs for Auto-Ranging • Input Sensitivity: 100µV • No Sample and Hold Required Applications • Personal Computer Data Acquisition • Scales, Panel Meters, Process Controls • HP-IL Bus Instrumentation Device Selection Table General Description The TC835 is a low power, 4-1/2 digit (0.005% resolution), BCD analog to digital converter (ADC) that has been characterized for 200kHz clock rate opera- tion. The five conversions per second rate is nearly twice as fast as the ICL7135 or TC7135. The TC835, like the TC7135, does not use the external diode resis- tor rollover error compensation circuits required by the ICL7135. The multiplexed BCD data output is perfect for interfac- ing to personal computers. The low cost, greater than 14-bit high-resolution and 100 µV sensitivity makes the TC835 exceptionally cost-effective. Microprocessor-based data acquisition systems are supported by the BUSY and STROBE outputs, along with the RUN/HOLD input of the TC835. The OVERRANGE, UNDERRANGE, BUSY and RUN/ HOLD control functions, plus multiplexed BCD data outputs, make the TC835 the ideal converter for µP- based scales, measurement systems and intelligent panel meters. The TC835 interfaces with full function LCD and LED display decoder/drivers. The UNDERRANGE and OVERRANGE outputs may be used to implement an auto-ranging scheme or special display functions. Part Number Package Temperature Range TC835CBU 64-Pin PQFP 0 °Cto +70°C TC835CKW 44-Pin PQFP 0 °Cto +70°C TC835CPI 28-Pin PDIP 0 °Cto +70°C Note: Tape and Reel available for 44-Pin PQFP package. Personal Computer Data Acquisition A/D Converter |
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