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データ・コンバータ
A/D コンバータ (ADC)
高精度 ADC

ADS1244

アクティブ

50Hz と 60Hz の除去能力、24 ビット、15sps、デルタ・シグマ ADC

ご注文はこちら
データシート

ADS1244

アクティブ
データシート ご注文はこちら

製品詳細

Resolution (bps) 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 (min) (V) 2.5 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 1.8 Digital supply (max) (V) 3.6
Resolution (bps) 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 (min) (V) 2.5 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 1.8 Digital supply (max) (V) 3.6
  • 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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種類 タイトル 最新の英語版をダウンロード 日付
* データシート ADS1244: Low Power, 24-Bit Analog-To-Digital Converter データシート 2002年 10月 21日

購入と品質

記載されている情報：
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報：
  • ファブの拠点
  • 組み立てを実施した拠点

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