Analog Circuit Design Volume Three

Chapter 339

16-bit ADC simplifies current measurements

Mark Thoren

Abstract

The LTC2433-1, a high performance 16-bit delta-sigma ADC that simplifies current measurements, is described.

Keywords

Analog-to-digital converter

LTC2433-1

Introduction

The LTC2433-1 is a high performance 16-bit delta-sigma ADC for DC measurements. With an input noise floor of 1.45μV_RMS and a reference range of 100mV to V_CC, the input resolution and range can be optimized for a wide variety of applications. The flexible SPI interface can be configured to self-clock, simplifying isolation or level shifting of digital signals in applications where the ADC must be referenced to a different potential than the data acquisition system.

Data transfer

Figure 339.1a ...