ADS1146

ACTIVO

ADC de 16 bits, 2 kSPS y 1 canal con PGA para la medición con sensores de precisión

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ADS114S06 ACTIVO ADC delta-sigma de 16 bits, 4 kSPS, 6 canales con PGA y referencia de tensión para la medición de se Higher speed, 6 channel

Detalles del producto

Resolution (Bits) 16 Sample rate (max) (ksps) 2 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) 2.125, 4.25 Input voltage range (min) (V) -2.125, 0 Features 50/60 Hz Rejection, Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 105 Power consumption (typ) (mW) 2.3 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bits) 16 Sample rate (max) (ksps) 2 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) 2.125, 4.25 Input voltage range (min) (V) -2.125, 0 Features 50/60 Hz Rejection, Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 105 Power consumption (typ) (mW) 2.3 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • Programmable Data Rates Up to 2 kSPS
  • Single-Cycle Settling for All Data Rates
  • Simultaneous 50-Hz and 60-Hz Rejection at
    20 SPS
  • Analog Multiplexer With 8 (ADS1148) and
    4 (ADS1147) Independently Selectable Inputs
  • Programmable Gain: 1 V/V to 128 V/V
  • Dual-Matched Programmable Excitation Current Sources
  • Low-Drift Internal 2.048-V Reference
  • Sensor Burnout Detection
  • 4 or 8 General-Purpose I/Os (ADS1147 and ADS1148)
  • Internal Temperature Sensor
  • Power Supply and VREF Monitoring (ADS1147 and ADS1148)
  • Self and System Calibration
  • SPI™-Compatible Serial Interface
  • Analog Supply: Unipolar (2.7 V to 5.25 V) or Bipolar (±2.5 V)
  • Digital Supply: 2.7 V to 5.25 V
  • Programmable Data Rates Up to 2 kSPS
  • Single-Cycle Settling for All Data Rates
  • Simultaneous 50-Hz and 60-Hz Rejection at
    20 SPS
  • Analog Multiplexer With 8 (ADS1148) and
    4 (ADS1147) Independently Selectable Inputs
  • Programmable Gain: 1 V/V to 128 V/V
  • Dual-Matched Programmable Excitation Current Sources
  • Low-Drift Internal 2.048-V Reference
  • Sensor Burnout Detection
  • 4 or 8 General-Purpose I/Os (ADS1147 and ADS1148)
  • Internal Temperature Sensor
  • Power Supply and VREF Monitoring (ADS1147 and ADS1148)
  • Self and System Calibration
  • SPI™-Compatible Serial Interface
  • Analog Supply: Unipolar (2.7 V to 5.25 V) or Bipolar (±2.5 V)
  • Digital Supply: 2.7 V to 5.25 V

The ADS1146, ADS1147, and ADS1148 devices are precision, 16-bit analog-to-digital converters (ADCs) that include many integrated features to reduce system cost and component count for sensor measurement applications. The devices feature a low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1147 and ADS1148 devices also provide a built-in, low-drift voltage reference, and two matched programmable excitation current sources (IDACs).

An input multiplexer supports four differential inputs for the ADS1148, two for the ADS1147, and one for the ADS1146. In addition, the multiplexer integrates sensor burn-out detection, voltage bias for thermocouples, system monitoring, and general purpose digital I/Os (ADS1147 and ADS1148). The PGA provides selectable gains up to 128 V/V. These features provide a complete front-end solution for temperature sensor measurement applications including thermocouples, thermistors, and resistance temperature detectors (RTDs) and other small signal measurements including resistive bridge sensors. The digital filter settles in a single cycle to support fast channel cycling when using the input multiplexer and provides data rates up to 2 kSPS. For data rates of 20 SPS or less, both 50-Hz and 60-Hz interference are rejected by the filter.

The ADS1146, ADS1147, and ADS1148 devices are precision, 16-bit analog-to-digital converters (ADCs) that include many integrated features to reduce system cost and component count for sensor measurement applications. The devices feature a low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1147 and ADS1148 devices also provide a built-in, low-drift voltage reference, and two matched programmable excitation current sources (IDACs).

An input multiplexer supports four differential inputs for the ADS1148, two for the ADS1147, and one for the ADS1146. In addition, the multiplexer integrates sensor burn-out detection, voltage bias for thermocouples, system monitoring, and general purpose digital I/Os (ADS1147 and ADS1148). The PGA provides selectable gains up to 128 V/V. These features provide a complete front-end solution for temperature sensor measurement applications including thermocouples, thermistors, and resistance temperature detectors (RTDs) and other small signal measurements including resistive bridge sensors. The digital filter settles in a single cycle to support fast channel cycling when using the input multiplexer and provides data rates up to 2 kSPS. For data rates of 20 SPS or less, both 50-Hz and 60-Hz interference are rejected by the filter.

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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 ADS114x 16-Bit, 2-kSPS, Analog-to-Digital Converters With Programmable Gain Amplifier (PGA) for Sensor Measurement datasheet (Rev. G) PDF | HTML 11/08/2016
Nota sobre la aplicación K-type thermocouple measurement circuit with precision ADC (Rev. A) PDF | HTML 20/09/2024
Nota sobre la aplicación Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 18/03/2024
Nota sobre la aplicación Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29/03/2023
Nota sobre la aplicación A Basic Guide to Thermocouple Measurements (Rev. A) PDF | HTML 29/03/2023
Libro electrónico Fundamentals of Precision ADC Noise Analysis (Rev. A) 19/06/2020
Analog Design Journal How delta-sigma ADCs work, Part 1 (Rev. A) 19/09/2016
Libro electrónico Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19/03/2015
Analog Design Journal How delta-sigma ADCs work, Part 2 9/11/2011

Diseño y desarrollo

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Placa de evaluación

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