TC3402VQR

Analog To Digital Converters (ADC) Overview

The TC3402VQR is a low-cost, low-power analog-to-digital converter manufactured by Microchip Technology. It utilizes Sigma-Delta technology to perform 16-bit conversions at up to eight per second. The device operates on a supply voltage ranging from 1.8V to 5.5V, consuming 250µA during conversion and 0.75µA in sleep mode. It features four true differential inputs with a built-in multiplexer and communicates via the microPort™ serial bus, requiring only two interface lines. An internal voltage reference is included, or an external reference can be used.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution at 8 conversions per second, adjustable down to 10-bit at 512 conversions per second
• Four true differential inputs with integrated analog multiplexer
• microPort™ serial interface using only SCLK and SDAT lines
• Automatic sleep mode entry when not performing data conversions

Analog To Digital Converters (ADC) Applications

• Consumer electronics and thermostats
• CO monitors and humidity meters
• Security sensors and medical instruments
• Embedded systems and portable equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the package type matches the QSOP narrow form factor for the TC3402VQR suffix. Confirm the temperature range requirement aligns with the commercial grade specification of 0°C to +85°C. Ensure the design supports the 1.8V to 5.5V operating voltage range and the specific pinout configuration for the 16-pin package.

Analog To Digital Converters (ADC) Selection Notes

Select the TC3402VQR when a quad-channel differential input ADC is required for battery-operated systems. Choose this part over single-ended variants if noise immunity is critical due to its true differential architecture. Consider the trade-off between conversion speed and resolution, as additional clock pulses reduce resolution but increase throughput.

Analog To Digital Converters (ADC) Part Context

The TC3402VQR is the QSOP package variant of the TC3402 family. It shares identical electrical characteristics and functionality with the TC3402VPE (PDIP package). Both are designed as microcontroller peripherals for cost-sensitive applications. The 'V' indicates the commercial temperature range, while 'QR' specifies the 16-pin QSOP narrow package.

Analog To Digital Converters (ADC) Replacement Considerations

The TC3402VPE is a direct pin-compatible replacement offering the same electrical performance in a 16-pin PDIP package. No other cross-model substitutes are documented in the provided datasheet.