AM452 Datasheet, PDF (1/21 Pages) Analog Microelectronics – Voltage-to-current transducer IC with a differential input

AM452 – Voltage-to-current transducer IC
with a differential input
PRINCIPLE FUNCTION
Amplification and conversion of differential input voltages (±400mV with a CMIR
of 1.5 – V_CC-3V) into an adjustable current output of 0/4...20mA, for example. The
offset and maximum output currents are independently adjustable in a wide range.
The IC is suitable for both 2- and 3-wire applications and as a HART^® carrier IC.
V_CC = 6…35V
Differential input
± 400mV
AM452
I_OUT = z.B.0/4...20mA
V_REF= 5/10V
I_S = max 10mA
TYPICAL APPLICATIONS
Transducers for differential input signals in current output values for:
• Transducers for sensor applications with an internal sensing element supply
• Drivers for the analog industrial power grid (e.g. remote display in current loop operation)
• Differential impedance converters
• Carrier for standard HART^® protocol communications
• Modular signal conditioning with digital correction (Frame concept [1])
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Phone: [phone]
Fax: [phone]
Internet: http://www.analogmicro.de
Email: [e-mail]
February 2008 - Rev 1.2 - Page 1/21