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A5191HRTLG-XTD The A5191HRTLG-XTD is a single-chip HART modem IC from On Semiconductor. It features 1200 bps FSK modulation, half-duplex operation, 3-5V supply, and operates from -40 to 85°C in a 32-LQFP package.
Mfr Part #:

A5191HRTLG-XTD

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
The A5191HRTLG-XTD is a single-chip HART modem IC from On Semiconductor. It features 1200 bps FSK modulation, half-duplex operation, 3-5V supply, and operates from -40 to 85°C in a 32-LQFP package.
✓ Total Stock: 9,986 pcs

A5191HRTLG-XTD Available from 2 distributors

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7,386 pcs
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2,600 pcs
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2600 pcs On Request 1 On Request On Request 22+20+ On Request On Request
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A5191HRTLG-XTD Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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A5191HRTLG-XTD Description

Short technical summary and product information.

The A5191HRTLG-XTD is a single-chip CMOS HART modem designed for use in HART field instruments and masters. It provides modulation, demodulation, receive filtering, carrier detect, and transmit-signal shaping functions required for HART physical layer communication. The modem uses phase continuous FSK at 1200 bits per second with Bell 202 shift frequencies of 1200 Hz and 2200 Hz. It operates in half-duplex mode, with receive circuits disabled during transmit to conserve power. The device is optimized for low power consumption, making it suitable for intrinsically safe applications. It operates from a 3.0V to 5.5V supply and is compatible with 3.3V or 5V microcontrollers. The A5191HRTLG-XTD is offered in a 32-lead LQFP package (7x7mm) with surface mount termination. It is specified for the industrial temperature range of -40°C to +85°C. The device is Pb-Free (RoHS compliant). Typical applications include HART multiplexers, HART modem interfaces, and 4-20mA loop-powered transmitters.

A5191HRTLG-XTD Quick Information

Product Type: HART Modem IC
Canonical Name: A5191HRTLG-XTD HART Modem IC
Subcategory: Modems - ICs and Modules

A5191HRTLG-XTD Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Pb-Free

A5191HRTLG-XTD Features

  • Single-chip CMOS HART modem IC.
  • 1200 bps FSK with Bell 202 frequencies.
  • Half-duplex operation conserves power.
  • Operates from 3.0V to 5.5V supply.
  • Industrial temperature range -40°C to +85°C.

A5191HRTLG-XTD Applications

  • Used in HART multiplexer designs.
  • Ideal for HART modem interfaces.
  • Suitable for 4-20mA loop transmitters.
  • Integrates into HART field instruments.

A5191HRTLG-XTD FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the A5191HRTLG-XTD?

3V to 5V.

What is the package type of the A5191HRTLG-XTD?

32-LQFP (7x7mm).

What is the operating temperature range?

-40°C to +85°C.

Is the A5191HRTLG-XTD RoHS compliant?

The device is Pb-Free (verified by datasheet) and designated as RoHS3 compliant (unverified).

What is the data rate and modulation of this modem?

1200 bps using FSK (Bell 202 frequencies).

What is the duplex mode?

Half-duplex.

What external components are required for the A5191HRTLG-XTD?

It requires an external 460.8 kHz crystal or ceramic resonator for its internal oscillator.

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