ADC
CS1239
MAIN PARAMETERS

Built-in 24 bit ADC with 19.5 bits effective resolution

Build-in LDO, 2.35/2.45/2.8/3.0 V optional output

Low drift clock

3-wire serial communication

Introduction

The CS1239 is high performance measurement AFE chip, which integrates extremely low-noise、24-bit analog-to-digital (A/D) converters. They provide complete high-resolution measurement solutions for the most demanding applications,such as weighing 、brigge sensor and so on.The ADC includes MUXP/MUXN with 8 inputs, Level shifting module, programmable low noise gain amplifier (PGA).It has 19.5-bit effective bits under 2.35 V reference、40 Hz frequency and 128 times of gain. The CS1239 is packaged in an SOP-16 or QFN-16.

Features

Input

— Supporting single end input

— Supporting up to 5 inputs combination of multiple differential input pairs

— Supporting the input voltage level shift function

PGA

— 1/2/4/8/16/32/64/128 times of optional gain

— Up to 100 MΩ equivalent input impedance

ADC

— 24-bit resolution

— Optional output rate 10 to 1280 Hz

Valid bits

— 19.5bits effective resolution (Vref =  2.35V, AD Rate = 40Hz, PGA = 128x)

LDO and internal reference voltage

— Build-in LDO, 2.35/2.45/2.8/3.0 V optional output

Supporting the high-performance, common, low power consumption, and sleep modes

Supporting voltage measurement,and single command switching

Low drift clock

3-wire serial communication

Applications

Bridge sensor

Weighing

Pressure measurement

Industrial control

Chemical analysis

Block Diagram
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DOCUMENT
CS1233&CS1239_Datasheet_en_V1.2
2019-02-26
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