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  9. HT5700 Low Power HART...

HT5700 Low Power HART Communication Controller

HT5700

Product Overview

The HT5700 is a low-power, single-chip HART FSK half-duplex modem IC designed for industrial transmitters, measurement instruments, and HART-enabled devices. It integrates HART signal modulation, demodulation, filtering, carrier detection, and signal generation, minimizing the need for external components.

The HT5700 supports a VCC supply voltage of 2.7 V to 5.5 V and an IOVCC range of 1.71 V to 5.5 V, providing flexible integration with different microcontrollers and industrial electronics. It operates from −40°C to +125°C and is available in a compact 4 mm × 4 mm 24-lead QFN package.

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Application Cases
Output Signal HART
Operating Temperature (-40~125)℃
Humidity Range (5~95)%RH
Storage Temperature (-55~150)℃
Digital Interface Supply (IOVCC) (1.71~5.5)V
VCC Supply Voltage 2.7–5.5 V
Operating Current Typical mode: 10 μA; other modes: refer to user manual
Dimensions (4 × 4)mm
Package LFCS-24
  • Simple and convenient design:Integrating a full featured, HART compliant FSK modem, it requires no complex design, just a few external components to quickly achieve HART communication, greatly lowering R&D and production costs.
  • Flexible and diverse configuration:Supporting flexible clock configuration options including an external crystal, built-in oscillator, or external clock input, it adapts to various design needs and improves application flexibility.
  • Industrial grade reliable design:Designed to industrial-grade standards, it operates over a temperature range of -40°C to +125°C, making it suitable for harsh industrial environments such as high and low temperatures, ensuring stable operation of the chip in various complex scenarios.
  • Reliable control of proprietary intellectual property:The controller has fully independent intellectual property rights, with the entire process from wafer manufacturing to packaging and testing completed domestically. This effectively mitigates supply chain risks and ensures stable chip availability and controllable supply.
  • Wide voltage compatibility:Supporting a wide 2.7V–5V operating range, the chip adapts to different industrial power supply scenarios, eliminating the need for extra voltage conversion circuits and improving compatibility and convenience.
  • Strong signal drive capability:The controller features a buffered HART output module with strong output drive capability, allowing it to directly drive related loads without the need for additional buffer circuits. This simplifies the design process and improves system stability.
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