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TC3401

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...............300A      Sleep...............50A
  • MicroPort™ Serial Bus Requires Only Two Interface Lines
  • Uses Internal or External Reference
  • Automatically Enters Sleep Mode When Not In Use
  • True Differential Inputs with Built-In Multiplexer Provide  Ratiometric Conversions
  • VDD Monitor and Reset Generator Operational  in Shutdown Mode
  • Early Warning Power Fail Detector, Also Suitable  as Wake-Up Timer Operational in Shutdown Mode
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Overview
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Device Overview

Summary

The TC3401 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 TC3401 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. A VDD monitor with reset generator provides Power-On Reset and Brown-out protection while an extra threshold detector is suitable for use as an early warning power fail detector, or as a wake-up timer. The TC3401’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 TC3401 is available in a 16-Pin PDIP and a 16-Pin QSOP package.

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...............300A
     Sleep...............50A
- MicroPort™ Serial Bus Requires Only Two Interface Lines
- Uses Internal or External Reference
- Automatically Enters Sleep Mode When Not In Use
- True Differential Inputs with Built-In Multiplexer Provide
  Ratiometric Conversions
- VDD Monitor and Reset Generator Operational
  in Shutdown Mode
- Early Warning Power Fail Detector, Also Suitable
  as Wake-Up Timer Operational in Shutdown Mode
Parametrics
Name
Value
Typical Supply Current (µA)
300
Typical INL (ppm)
38
Max Sample Rate (samples/sec)
8
Input Type
2 Differential
Interface
2-wire
Resolution (bits)
16
Supply Voltage Range (V)
1.8 to 5.5

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Data Sheet

10/22/2002
458KB

Product Line Card


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