Device Engineering Inc. is committed to industry best practices in worker safety

and fairness, environmental responsibility, business ethics, integrity and efficiency, and requires the

same of all of its business partners.


The Responsible Business Alliance (RBA), formerly the Electronic Industry Citizenship Coalition

(EICC), Code of Conduct establishes standards to ensure that working conditions in the electronics

industry or industries in which electronics is a key component and its supply chains are safe, that

workers are treated with respect and dignity, and that business operations are environmentally

responsible and conducted ethically.


The RBA Code of Conduct provides guidance in five critical areas of CSR performance:

*Labor *Health and Safety *Environment *Business Ethics *Management System

The current version of the RBA Code of Conduct endorsed by Device Engineering is available at:



  Power Control 
  DEI1028 Voltage Clamping Circuit
DEI1028Data Sheet

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  • Clamps transients on both avionics and industrial power busses
  • Permits use of a variety of power supplies and OP Amps
  • Small foot print (8L SOIC NB)
  • Wide input voltage range
  • Programmable Undervoltage Lockout
  • Stable over temperature
  • Active low On/Off Pin
  • Soft start
  • Highly versatile

The DEI 1028 is designed to provide the control for a power supply voltage clamp. It provides drive for a wide variety of P-Channel MOSFETS, linearly clamping the output. There is also a programmable Undervoltage Lockout feature that shuts the Power MOSFET off. Output voltage is maintained below the clamping threshold for Commercial-Off-The-Shelf switching supplies and op amps. If the clamping threshold is exceeded the out-put voltage is clamped at 35V maximum. The device is protected against a 100V spike of 100ms duration with over and undershoot protection

An open collector logic output is also provided that can be used as a power down interrupt for the system micro-processor.

Voltage Clamping Circuit Block Diagram


      DEI1090 LED Driver with Square Law Dimming Control

DEI1090 Datasheet

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  • Emulates incandescent lamp "Square Law" luminance curve.
  • LED dimming controlled by Pulse Width Modulation ranging from 50HZ to 200HZ.
  • LED current adjustable from 10mA to 20mA.
  • 200:1 Dimming Range at 50Hz. 40:1 Dimming Range at 200Hz
  • Drives 8 LED outputs with matched current drive.
  • Drivers can be cascaded to synchronously drive additional LEDs.
  • Plastic 16 lead SOIC package.

The DEI1090 device is a 16 pin bipolar integrated circuit designed to drive nine LEDs and provide Pulse Width Modulated (PWM) dimming control according to the luminance curve of incandescent lamps. The device squares the analog control input and produces a PWM waveform used to enable or disable the current outputs. The LED brightness is controlled by the PWM duty cycle. All nine LEDs are driven at the same adjustable drive current. Drivers can be cascaded to synchronously drive additional LED groups. The dimming control input may be a DC or AC voltage.

LED Dimmer Block Diagram





Device Engineering can package your custom circuits in any standard package available in the industry from DIPs to BGAs. Non Standard packages such as heat spreaders are also available.

  • DIP (Plastic, Ceramic, Side Brazed)
  • SOIC - NB(150mil) or WB(300mil)
  • SSOP
  • PLCC
  • MQFP
  • MLPQ
  • BGA
  • µBGA
  • Many more...

Packaging info for standard products


Product Flow Summary

Typical DEI Plastic SMT Package



Process Description Burn-In Standard
Incoming Wafer Inspection Yes Yes
Wafer Probe Sample Sample
Wafer Saw Yes Yes
2nd Optical Inspection Yes Yes
Die Attach Yes Yes
Wire Bond Yes Yes
3rd Optical Inspection Yes Yes
Mold & Cure Yes Yes
Mark (Laser or Ink) Yes Yes
Mark Permanency (Ink) Sample Sample
Lead Finish Yes Yes
Trim/Form/Singulation Yes Yes
Package QC Final Visual & Lot Acceptance Yes Yes
Pre-Electrical Visual Inspection Yes Yes
Pre Burn-In Electrical Test, Room/Hot/Cold 100% Room & Hot, Sample Cold No
HTRB Burn-in, 125°C, 160hr 100% No
Electrical Test, Room Temperature 100% 100%
Electrical Test, Hot Temperature 100% 100%
Electrical Test, Cold Temperature 0.65% AQL 0.65% AQL
Final Visual & Coplanarity Inspection 100% 100%
Bake & Dry Pack Yes Yes
Pack & Ship Yes Yes


Device Engineering is an AS9100:2009 Rev.D and ISO9001:2015 certified design and manufacturing facility specializing in Analog and Mixed Signal Integrated Circuits.


By virtue of our 25 years of experience, Device Engineering matches the right processing technology with the product requirements.    There is no need to compromise on system design to fit processing capabilities.  Unlike other design houses who will design your circuits to the technology that is available to them, Device Engineering has no process technology limits. This allows us to design devices that both meet stringent requirements and are delivered at the lowest possible cost.

Low price/high volume, low power, low voltage, special signal conditioning, high voltage, and many more design capabilities can be utilized and mixed to fit your specific application.


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  • CMOS
    • Silicon Gate
  • BiPolar
    • CML
    • ECL
  • MOS
    • N - Channel Silicon Gate
    • P - Channel Silicon Gate
    • P - Channel Metal Gate


  • CMOS
    • Silicon Gate
  • BiPolar
    • Low Voltage Schottky
    • 20/40 Volt Processing
  • BiMOS
  • DMOS

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Device Engineering Incorporated
6031 South Maple Avenue
Tempe AZ 85283

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