ADS7844

ACTIVO

Convertidor analógico a digital de muestreo de salida serie de 8 canales y 12 bits

Detalles del producto

Resolution (Bits) 12 Sample rate (max) (ksps) 200 Number of input channels 8 Interface type SPI Architecture SAR Input type Pseudo-Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 1.8 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 SNR (dB) 73.1 Digital supply (min) (V) 1.9 Digital supply (max) (V) 5.5
Resolution (Bits) 12 Sample rate (max) (ksps) 200 Number of input channels 8 Interface type SPI Architecture SAR Input type Pseudo-Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 1.8 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 SNR (dB) 73.1 Digital supply (min) (V) 1.9 Digital supply (max) (V) 5.5
SSOP (DBQ) 20 51.9 mm² (8.65 mm × 6 mm) SSOP (DB) 20 56.16 mm² (7.2 mm × 7.8 mm)
  • SINGLE SUPPLY: 2.7V to 5V
  • 8-CHANNEL SINGLE-ENDED OR 4-CHANNEL DIFFERENTIAL INPUT
  • UP TO 200kHz CONVERSION RATE
  • ±1 LSB MAX INL AND DNL
  • NO MISSING CODES
  • 72dB SINAD
  • SERIAL INTERFACE
  • 20-LEAD QSOP AND 20-LEAD SSOP PACKAGES
  • ALTERNATE SOURCE FOR MAX147
  • APPLICATIONS
    • DATA ACQUISITION
    • TEST AND MEASUREMENT
    • INDUSTRIAL PROCESS CONTROL
    • PERSONAL DIGITAL ASSISTANTS
    • BATTERY-POWERED SYSTEMS

All trademarks are the property of their respective owners.

  • SINGLE SUPPLY: 2.7V to 5V
  • 8-CHANNEL SINGLE-ENDED OR 4-CHANNEL DIFFERENTIAL INPUT
  • UP TO 200kHz CONVERSION RATE
  • ±1 LSB MAX INL AND DNL
  • NO MISSING CODES
  • 72dB SINAD
  • SERIAL INTERFACE
  • 20-LEAD QSOP AND 20-LEAD SSOP PACKAGES
  • ALTERNATE SOURCE FOR MAX147
  • APPLICATIONS
    • DATA ACQUISITION
    • TEST AND MEASUREMENT
    • INDUSTRIAL PROCESS CONTROL
    • PERSONAL DIGITAL ASSISTANTS
    • BATTERY-POWERED SYSTEMS

All trademarks are the property of their respective owners.

The ADS7844 is an 8-channel, 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial interface. Typical power dissipation is 3mW at a 200kHz throughput rate and a +5V supply. The reference voltage (VREF) can be varied between 100mV and VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces power dissipation to under 1µW. The ADS7844 is guaranteed down to 2.7V operation.

Low power, high speed, and on-board multiplexer make the ADS7844 ideal for battery- operated systems such as personal digital assistants, portable multichannel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition. The ADS7844 is available in a 20-lead QSOP package and the MAX147 equivalent 20-lead SSOP is guaranteed over the –40°C to +85°C temperature range.

The ADS7844 is an 8-channel, 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial interface. Typical power dissipation is 3mW at a 200kHz throughput rate and a +5V supply. The reference voltage (VREF) can be varied between 100mV and VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces power dissipation to under 1µW. The ADS7844 is guaranteed down to 2.7V operation.

Low power, high speed, and on-board multiplexer make the ADS7844 ideal for battery- operated systems such as personal digital assistants, portable multichannel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition. The ADS7844 is available in a 20-lead QSOP package and the MAX147 equivalent 20-lead SSOP is guaranteed over the –40°C to +85°C temperature range.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos ADS7844: 12-Bit, 8-Channel Serial Output Sampling Analog-To-Digital Converter datasheet (Rev. A) 17/10/2003
Libro electrónico Best of Baker's Best: Precision Data Converters -- SAR ADCs 21/05/2015
Nota sobre la aplicación Determining Minimum Acquisition Times for SAR ADCs, part 2 17/03/2011
Nota sobre la aplicación Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 10/11/2010
Nota sobre la aplicación Apply TI TSC for Various and Multiple Functions 11/12/2006
Nota sobre la aplicación Using the ADS7841 and ADS7844 with 15-Clock Cycles 30/06/2005

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

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Pedidos y calidad

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