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 260µA; Sleep: 0.75µA• microPort™ Serial Bus Requires only two Interface Lines• Use...
TC3400: 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 260µA;...
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Supply Voltage ...................................................................... 6.0V
Input Voltage (All Other Pins):........ (GND 0.3V) to (VDD + 0.3V)
Operating Temperature Range ................................... 0 to 85
Storage Temperature .......................................... -65 to +150
*Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.
The TC3400 is a low cost, low power analog-to-digital converter based on Microchip's Sigma-Delta technology. It will perform 16-bit conversions (15-bit plus sign) at up to eight per second. The TC3400 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 TC3400'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.
The TC3400 is available in a 8-Pin PDIP and a 8-Pin SOIC package.