ADS1244 - 具有 50 和 60Hz 抑制的 24 位 15sps Δ-Σ ADC

ADS1244是TI德州仪器公司的一款精密ADC(<=10MSPS)产品，ADS1244是具有 50 和 60Hz 抑制的 24 位 15sps Δ-Σ ADC，本站介绍了ADS1244的封装应用图解、特点和优点、功能等，并给出了与ADS1244相关的TI元器件型号供参考。

ADS1244 - 具有 50 和 60Hz 抑制的 24 位 15sps Δ-Σ ADC - 精密ADC(<=10MSPS) - 模数转换器 - 德州仪器

产品描述

The ADS1244 is a 24-bit, delta-sigma Analog-to-Digital (A/D) converter. It offers excellent performance and very low power in an MSOP-10 package and is well suited for demanding high-resolution measurements, especially in portable and other space- and power-constrained systems.

A 3rd-order delta-sigma modulator and digital filter form the basis of the A/D converter. The analog modulator has a ±5V differential input range. The digital filter rejects both 50Hz and 60Hz signals, completely settles in one cycle, and outputs data at 15 samples per second.

A simple, 2-wire serial interface provides all the necessary control. Data retrieval, self-calibration, and Sleep Mode are handled with a few simple waveforms. When only single conversions are needed, the ADS1244 can be shut down (Sleep Mode) while idle between measurements to dramatically reduce the overall power dissipation. Multiple ADS1244s can be connected together to create a synchronously sampling multichannel measurement system. The ADS1244 is designed to easily connect to microcontrollers, such as the MSP430.

The ADS1244 supports 2.5V to 5.25V analog supplies and 1.8V to 3.6V digital supplies. Power is typically less than 270uW in normal operation and less than 1uW during Sleep Mode.

产品特性

20-BIT EFFECTIVE RESOLUTION
CURRENT CONSUMPTION: 90uA
ANALOG SUPPLY: 2.5V to 5.25V
DIGITAL SUPPLY: 1.8V to 3.6V
±5V DIFFERENTIAL INPUT RANGE
0.0002%INL (TYP), 0.0008%INL (MAX)
SIMPLE 2-WIRE SERIAL INTERFACE
SIMULTANEOUS 50Hz AND 60Hz REJECTION
SINGLE CONVERSIONS WITH SLEEP MODE
SINGLE-CYCLE SETTLING
SELF-CALIBRATION
WELL-SUITED FOR MULTICHANNEL SYSTEMS
EASILY CONNECTS TO THE MSP430
APPLICATIONS
- HAND-HELD INSTRUMENTATION
- PORTABLE MEDICAL EQUIPMENT
- INDUSTRIAL PROCESS CONTROL
- WEIGH SCALES

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