TC3402

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...............250µA Sleep...............0.75µA
MicroPort™ Serial Bus Requires Only Two Interface Lines
Uses Internal or External Reference
Automatically Enters Sleep Mode When Not In Use
Four True Differential Inputs with Built-In Multiplexer

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Overview

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Summary

The TC3402 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 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) detectedonSCLKfor t4 secondsreducestheA/Dresolution 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 TC3402 is available in 16-Pin PDIP and 16-Pin QSOP packages.

Please consider this device MCP3424

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...............250µA
     Sleep...............0.75µA
- MicroPort™ Serial Bus Requires Only Two Interface Lines
- Uses Internal or External Reference
- Automatically Enters Sleep Mode When Not In Use
- Four True Differential Inputs with Built-In Multiplexer

Parametrics

Typical Supply Current (µA)

250

Typical INL (ppm)

Max Sample Rate (samples/sec)

Input Type

4 Differential

Interface

2-wire

Resolution (bits)

Supply Voltage Range (V)

1.8 to 5.5