Industrial Voltage Amplifier IC

AM401 is an amplifier IC for differential and single-ended input voltages suitable for industrial sensing and signal-conditioning applications. Its modular design, integrated reference voltage source and integrated protection functions allow a wide range of industrial applications.




  • 1.Sensor signal-conditioner
  • 2.Adjustable voltage source
  • 3.Front and back end IC for µC
  • 4.Impedance converter
  • 5.Protected output stage
  • 6.Industrial process control

Short Specifications

Supply voltage (VCC) 6 .. 35 V (typ. 24 V)
Input voltage range 0 .. 5 V (single-ended), 0 .. ±400 mV (differential)
Voltage output e.g. 0 .. 10 V, adjustable
Reference voltage source 5 / 10 V (max. 10 mA)
Current source 0 .. 10 mA, adjustable
Temperature range -40 °C .. 85 °C
Protection functions Reverse polarity protection, short circuit protection, output current limitation
Package / Delivery forms SO16, SSOP16, QFN16, on DIL16-adapter, sawn 6″ wafer on blue foil
RoHS status compliant


General Documents

Datasheet AM401
Product flyer AM401
IC package catalog


Typical Application Circuits with Blockdiagram

Protected sensor signal-conditioner with adjustable voltage output (e.g. 0 .. 10 V):
AM401 as sensor signal-conditioner with protection functions.
µC back end and protector IC with adjustable voltage output (e.g. 0 .. 5 V)
AM401 as microcontroller back end.


Ordering Codes

Order number Delivery form
AM401-0-SO16 SO16(n) package
AM401-0-SSOP16 SSOP16 package
AM401-0-QFN16 QFN16 package
AM401-WAF sawn wafer on 6″ blue foil
AM401-Adapt AM401 soldered to an SO16-DIL16 adapter



Order Number Description
BBAM401 An easily adaptable, preassembled breadboard. Suitable for first experiments using AM401