A6850: Dual Channel Two-wire Sensor Interface IC



The Allegro A6850 is an interface IC which provides the sensor output state and open/short diagnostic information between two-wire current output sensor ICs and a microcontroller. This IC uses protected high-side low resistance switches to supply voltage to two individually controlled sensor channels, each with current limiting circuitry.

Eliminating the need for an external series sense resistor, typical in two-wire, current interface applications, reduces the voltage drop across the sensing circuit. Combined with a low operating and sleep mode current, this approach provides additional protection and headroom for supply line transients commonly experienced in automotive and industrial applications.

The A6850 is provided in an 8-pin Pb (lead) free SOIC package, with 100% matte tin lead frame plating, this IC offers design-in ease for two-wire applications whether it's a complex solid-state sensor or simple mechanical switch. 

Top Features

  • Dual channel with independent control
  • Low voltage drop with high-side low resistance sensing
  • Built in protection and diagnostics for open or shorts
  • Output current limiting on each channel
  • Low operating and sleep mode currents

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check Stock
APEK6850KL-01-T DEMO BOARD -40°C to 125°C No -- Contact your
local sales rep
Distributor Stock
A6850KLTR-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

Allegro 8 pin L package


8-pin Pb (lead) free SOIC package (suffix L)

L Package Documentation