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TC3402VQR Arkusz danych(PDF) 1 Page - Microchip Technology |
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TC3402VQR Arkusz danych(HTML) 1 Page - Microchip Technology |
1 / 16 page © 2002 Microchip Technology Inc. DS21411B-page 1 TC3402 Features • 16-bit Resolution at Eight Conversions Per Second, Adjustable Down to 10-bit Resolution at 512 Conversions Per Second • 1.8V – 5.5V Operation, Low Power Operating 250 µA; Sleep: 0.75µA • Four True Differential Inputs with Built-in Multiplexer • microPort™ Serial Bus Requires only two Interface Lines • Uses Internal or External Reference • Automatically Enters Sleep Mode when not in use Applications • Consumer Electronics, Thermostats, CO Monitors, Humidity Meters, Security Sensors • Embedded Systems, Data Loggers, Portable Equipment • Medical Instruments Device Selection Table Package Type General Description The TC3402 is a low cost, low power analog-to-digital converter based on Microchip’s Sigma-Delta technol- ogy. It will perform 16-bit conversions (15-bit plus sign) at up to eight per second. The TC3402 is optimized for use as a microcontroller peripheral in low cost, battery operated systems. A voltage reference is included, or an external reference can be used. The TC3402’s 2-wire microPort™ digital interface is used for starting conversions and for reading out the data. Driving the SCLK line low starts a conversion. After the conversion starts, each additional falling edge (up to six) detected on SCLK for t4 seconds reduces the A/D resolution by one bit and cuts conversion time in half. After a conversion is completed, clocking the SCLK line puts the MSB through LSB of the resulting data word onto the SDAT line, much like a shift register. The part automatically sleeps when not performing a data conversion. TheTC3402isavailableina16-PinPDIPanda16-Pin QSOP package. Part Number Package Temperature Range TC3402VPE 16-Pin PDIP (Narrow) 0 °Cto +85°C TC3402VQR 16-Pin QSOP Narrow) 0 °Cto +85°C 16-Pin PDIP 16-Pin QSOP 1 16 215 314 413 512 611 710 IN2- 89 IN1+ IN1- REFIN GND A0 V DD SDAT REFOUT IN2+ TC3402 SCLK IN3+ IN3- A1 IN4+ IN4- +1.8 Low Power, Quad Input, 16-Bit Sigma-Delta A/D Converter |
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