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ADS1224

AKTIV

ADC, 24 Bit, 240 SPS, mit 4-kanaligem Differenzeingangs-Multiplexer, High-Z-Puffer und seriellem Aus

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ADS1224

AKTIV
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Produktdetails

Resolution (Bits) 24 Sample rate (max) (ksps) 0.24 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features 50/60 Hz Rejection, Temp Sensor Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 1.35 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.5
Resolution (Bits) 24 Sample rate (max) (ksps) 0.24 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features 50/60 Hz Rejection, Temp Sensor Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 1.35 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.5
TSSOP (PW) 20 41.6 mm² 6.5 x 6.4
  • 240SPS Data Rate with 4MHz Clock
  • 20-Bit Effective Resolution
  • Input Multiplexer with Four Differential Channels
  • Pin-Selectable, High-Impedance Input Buffer
  • ±5V Differential Input Range
  • 0.0003% INL (typ), 0.0015% INL (max)
  • Self-Calibrating
  • Simple 2-Wire Serial Interface
  • On-Chip Temperature Sensor
  • Single Conversions with Standby Mode
  • Low Current Consumption: 300µA
  • Analog Supply: 2.7V to 5.5V
  • Digital Supply: 2.7V to 5.5V
  • Applications
    • Hand-Held Instrumentation
    • Portable Medical Equipment
    • Industrial Process Control
    • Weigh Scales

All trademarks are the property of their respective owners.
  • 240SPS Data Rate with 4MHz Clock
  • 20-Bit Effective Resolution
  • Input Multiplexer with Four Differential Channels
  • Pin-Selectable, High-Impedance Input Buffer
  • ±5V Differential Input Range
  • 0.0003% INL (typ), 0.0015% INL (max)
  • Self-Calibrating
  • Simple 2-Wire Serial Interface
  • On-Chip Temperature Sensor
  • Single Conversions with Standby Mode
  • Low Current Consumption: 300µA
  • Analog Supply: 2.7V to 5.5V
  • Digital Supply: 2.7V to 5.5V
  • Applications
    • Hand-Held Instrumentation
    • Portable Medical Equipment
    • Industrial Process Control
    • Weigh Scales

All trademarks are the property of their respective owners.

The ADS1224 is a 4-channel, 24-bit, delta-sigma analog- to-digital (A/D) converter. It offers excellent performance and low power in a TSSOP-20 package. The ADS1224 is well-suited for demanding, high-resolution measurements, especially in portable systems and other space-saving and power-constrained applications.

A delta-sigma (ΔΣ) modulator and digital filter form the basis of the A/D converter. The analog modulator has a ±5V differential input range. An input multiplexer (MUX) is used to select between four separate differential input channels. A buffer can be selected to increase the input impedance of the measurement.

A simple, 2-wire serial interface provides all the necessary control. Data retrieval, self-calibration, and Standby mode are handled with a few simple waveforms. When only single conversions are needed, the ADS1224 can be quickly shut down (Standby mode) while idle between measurements to dramatically reduce the overall power consumption. Multiple ADS1224s can be connected together to create a synchronously sampling multichannel measurement system. The ADS1224 is designed to easily connect to microcontrollers, such as the MSP430.

The ADS1224 supports 2.7V to 5.5V analog supplies and 2.7V to 5.5V digital supplies. Power is typically less than 1mW in 3V operation and less than 1µW during Standby mode.

The ADS1224 is a 4-channel, 24-bit, delta-sigma analog- to-digital (A/D) converter. It offers excellent performance and low power in a TSSOP-20 package. The ADS1224 is well-suited for demanding, high-resolution measurements, especially in portable systems and other space-saving and power-constrained applications.

A delta-sigma (ΔΣ) modulator and digital filter form the basis of the A/D converter. The analog modulator has a ±5V differential input range. An input multiplexer (MUX) is used to select between four separate differential input channels. A buffer can be selected to increase the input impedance of the measurement.

A simple, 2-wire serial interface provides all the necessary control. Data retrieval, self-calibration, and Standby mode are handled with a few simple waveforms. When only single conversions are needed, the ADS1224 can be quickly shut down (Standby mode) while idle between measurements to dramatically reduce the overall power consumption. Multiple ADS1224s can be connected together to create a synchronously sampling multichannel measurement system. The ADS1224 is designed to easily connect to microcontrollers, such as the MSP430.

The ADS1224 supports 2.7V to 5.5V analog supplies and 2.7V to 5.5V digital supplies. Power is typically less than 1mW in 3V operation and less than 1µW during Standby mode.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Datum
* Data sheet 24-Bit Analog-to-Digital Converter with 4-Channel Differential Input Muliplexer datasheet (Rev. C) 10 Dez 2008
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 Mär 2023
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 Mär 2015

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