Two-wire Loop-Powered PWM Signal Conditioning Module

Mornsun has introduced the TW147HL, a two-wire loop powered pwm signal conditioning module which converts a pwm signal into 4- to 20-mA current signal, without the need for DAC. It is in a compact package (SIP9) and offers 2000Vac isolation and excellent temperature drift (≤50PPM / degree at operating temperature of -40 to +85 degrees ), suitable for two-wire smart field instrument application.

Obtaining power directly from back-end current loop to supply front-end equipment, TW147HL isolates the pwm signal from the front-end equipment and converts it into 4- to 20-mA two-wire current signal. With an integrated HART signal, the series realize half duplex communication between the field area and control area.

Features include: Suitable for two-wire smart field instrument application Two-wire loop powered; pwm signal input; HART compatible; High linearity (0.1% F.S.); SIP9 package (26 x 9.5 x 12.5mm); Extremely low temperature coefficient: 50ppm / degree C (typical); Operating temperature range of -40 to +85 degrees C; ESD protection (±4kV); and Isolated power output of 3.3Vdc at 4mA.