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Convertidores de datos
Convertidores digital-analógicos (DAC)
DAC de precisión (≤ 10 MSPS)

AFE88101

ACTIVO

DAC de 16 bits de canal único y baja potencia para aplicaciones de sensores y transmisores de campo

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AFE88101

ACTIVO
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Detalles del producto

Resolution (Bits) 16 Number of DAC channels 1 Interface type SPI Output type Voltage Output voltage range (V) 0.15 to 1.25, 0.2 to 1.0, 0.3 to 2.5, 0.4 to 2.0 INL (max) (±LSB) 4 Reference type INT/EXT Architecture STRING Rating Catalog Features Integrated Temp Sensor Power consumption (typ) (mW) 0.342 Operating temperature range (°C) -55 to 125 Product type Special-function DAC ADC resolution (bps) 12 DAC resolution (bps) 16
Resolution (Bits) 16 Number of DAC channels 1 Interface type SPI Output type Voltage Output voltage range (V) 0.15 to 1.25, 0.2 to 1.0, 0.3 to 2.5, 0.4 to 2.0 INL (max) (±LSB) 4 Reference type INT/EXT Architecture STRING Rating Catalog Features Integrated Temp Sensor Power consumption (typ) (mW) 0.342 Operating temperature range (°C) -55 to 125 Product type Special-function DAC ADC resolution (bps) 12 DAC resolution (bps) 16
UQFN (RRU) 24 16 mm² (4 mm × 4 mm)
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design: AFE88101, AFE78101
  • Low quiescent current: 170 µA (typ)
  • 16-bit or 14-bit monotonic high-performance DAC
    • 1.8-V supply: 0.15 V to 1.25 V, 0.2 V to 1.0 V
    • 5-V supply: 0.3 V to 2.5 V, 0.4 V to 2.0 V
    • 4-LSB INL at 16 bits
    • 0.07% FSR (max) TUE from –40°C to +125°C
  • 12-bit 3.84-kSPS ADC for advanced diagnostics
  • Integrated 1.25-V reference at 10 ppm/°C
  • Internal 1.2288-MHz oscillator with clock output
  • Digital interfaces:
    • Serial peripheral interface (SPI)
    • Universal asynchronous receiver-transmitter (UART)
  • Fault detection: CRC bit error checking, windowed watchdog timer, diagnostic ADC
  • Wide operating temperature: –55°C to +125°C
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design: AFE88101, AFE78101
  • Low quiescent current: 170 µA (typ)
  • 16-bit or 14-bit monotonic high-performance DAC
    • 1.8-V supply: 0.15 V to 1.25 V, 0.2 V to 1.0 V
    • 5-V supply: 0.3 V to 2.5 V, 0.4 V to 2.0 V
    • 4-LSB INL at 16 bits
    • 0.07% FSR (max) TUE from –40°C to +125°C
  • 12-bit 3.84-kSPS ADC for advanced diagnostics
  • Integrated 1.25-V reference at 10 ppm/°C
  • Internal 1.2288-MHz oscillator with clock output
  • Digital interfaces:
    • Serial peripheral interface (SPI)
    • Universal asynchronous receiver-transmitter (UART)
  • Fault detection: CRC bit error checking, windowed watchdog timer, diagnostic ADC
  • Wide operating temperature: –55°C to +125°C

The 16-bit AFE88101 and 14-bit AFE78101 ( AFEx8101) are highly-integrated, high-accuracy, extremely low-power digital-to-analog converters (DACs) with voltage outputs designed for sensor-transmitter applications.

The AFEx8101 devices include most of the components required to design a 4‑mA to 20‑mA, 2‑wire (loop-powered) sensor transmitter. In addition to the highly accurate DAC, these devices include a 10‑ppm/°C voltage reference and a diagnostic analog-to-digital converter (ADC). To accommodate intrinsic and functional-safety concerns, external voltage-to-current conversion and power regulation are required.

The internal diagnostic ADC is multiplexed to several internal nodes that enable an automatic self-health check. This check is capable of detecting errors or malfunctions of the internal bias sources, power regulator, voltage reference, DAC output, die temperature, and optional external voltage source. If any fault is detected from the diagnostic ADC, CRC frame-error checking, or windowed watchdog timer, the devices can optionally issue an interrupt, enter a fail-safe state corresponding to a standard NAMUR output value or user-specified custom value, or both.

These devices operate from supplies as low as 1.71 V with a maximum quiescent current of 210 µA. The devices are specified over the temperature range of –40°C to +125°C, but are functional from –55°C to +125°C.

The 16-bit AFE88101 and 14-bit AFE78101 ( AFEx8101) are highly-integrated, high-accuracy, extremely low-power digital-to-analog converters (DACs) with voltage outputs designed for sensor-transmitter applications.

The AFEx8101 devices include most of the components required to design a 4‑mA to 20‑mA, 2‑wire (loop-powered) sensor transmitter. In addition to the highly accurate DAC, these devices include a 10‑ppm/°C voltage reference and a diagnostic analog-to-digital converter (ADC). To accommodate intrinsic and functional-safety concerns, external voltage-to-current conversion and power regulation are required.

The internal diagnostic ADC is multiplexed to several internal nodes that enable an automatic self-health check. This check is capable of detecting errors or malfunctions of the internal bias sources, power regulator, voltage reference, DAC output, die temperature, and optional external voltage source. If any fault is detected from the diagnostic ADC, CRC frame-error checking, or windowed watchdog timer, the devices can optionally issue an interrupt, enter a fail-safe state corresponding to a standard NAMUR output value or user-specified custom value, or both.

These devices operate from supplies as low as 1.71 V with a maximum quiescent current of 210 µA. The devices are specified over the temperature range of –40°C to +125°C, but are functional from –55°C to +125°C.
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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 AFEx8101 16-Bit and 14-Bit, Low-Power DACs With Voltage Reference and Diagnostic ADC for 4-mA to 20-mA Loop-Powered Applications datasheet PDF | HTML 20/12/2022
Nota sobre la aplicación A Simple, Java-Based CRC Calculator PDF | HTML 4/03/2026
Analog Design Journal Designing 4mA to 20mA loop-powered transmitters PDF | HTML 28/05/2024
Analog Design Journal How to use an ideal diode controller as a scalable input bypass switch in solar applications PDF | HTML 28/05/2024
Application brief Ultra-Low-Power, Low-Voltage, 2-Wire, 4- to 20-mA Loop Transmitter Using AFE881H PDF | HTML 3/03/2023
Información sobre seguridad funcional AFE88101 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 22/08/2022

Diseño y desarrollo

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Placa de evaluación

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
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