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TC3400

Status: End of Life

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...............260A      Sleep...............0.75A
  • MicroPort™ Serial Bus Requires Only Two Interface Lines
  • Uses Internal or External Reference
  • Automatically Enters Sleep Mode When Not In Use
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Device Overview

Summary

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 8-Pin PDIP and 8-Pin SOIC packages.

Please consider this device MCP3421

Additional 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...............260A     Sleep...............0.75A
  • MicroPort™ Serial Bus Requires Only Two Interface Lines
  • Uses Internal or External Reference
  • Automatically Enters Sleep Mode When Not In Use
Parametrics
Name
Value
Typical Supply Current (µA)
260
Typical INL (ppm)
38
Max Sample Rate (samples/sec)
8
Input Type
1 Differential
Interface
2-wire
Resolution (bits)
16
Supply Voltage Range (V)
1.8 to 5.5

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437KB

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