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類比轉數位轉換器 (ADC)
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ADS1244

現行

具有 50 和 60Hz 抑制功能的 24 位元 15sps Delta-Sigma ADC

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產品規格表

ADS1244

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 24 Sample rate (max) (ksps) 0.03 Number of input channels 1 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Features 50/60 Hz Rejection Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 0.27 Analog supply voltage (min) (V) 2.5 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 1.8 Digital supply (max) (V) 3.6
Resolution (Bits) 24 Sample rate (max) (ksps) 0.03 Number of input channels 1 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Features 50/60 Hz Rejection Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 0.27 Analog supply voltage (min) (V) 2.5 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 1.8 Digital supply (max) (V) 3.6
VSSOP (DGS) 10 14.7 mm² (3 mm × 4.9 mm)
  • 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
  • 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

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.

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.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 ADS1244: Low Power, 24-Bit Analog-To-Digital Converter datasheet 2002/10/21
應用說明 Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023/3/29
電子書 Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 2015/3/19
應用說明 Data Capture with Multiple ADS1244 or ADS1245 Devices in Parallel 2004/6/2
應用說明 Inputs Currents for High-Resolution ADCs 2003/3/6

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ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

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