Semiconductor » High Voltage Asic » Products » DH0485A

DH0485A: 240V, 4-Channel DAC HV Amplifier

240V, 4-Channel, DAC HV Amplifier with DC/DC Boost Converter

DH0485A DAC HV Amplifier

Teledyne DALSA’s DH0485A has four independent 16-bit High Voltage Linear Amplifiers with 2-bit programmable internal close loop gain.
A DC/DC Step-up Converter is included to supply an adjustable High Voltage power rail programmable at 90V, 115V, 170V and 240V.

The DH0485A uses a standard SPI®/3-wire serial interface to control the four DACs.

Reset pin (ST), active low, is used to put the DC/DC converter, all HV Outputs and all DACs at low level.
The DH0485A is fabricated in Teledyne DALSA Semiconductor’s CMOS/DMOS High Voltage Technology providing high reliability and using advanced materials which allows accuracy and low noise. 


Feature Specification
Part Number DH0485A
Output Voltage 0-90V, 0-115V, 0-170V and 0-240V
Resolution 16 bits
DAC settling time 7 msec
Max positive supply 3.6 V
Negative supply No
DAC type Voltage out
Packaging QFN 33L, 6x6 mm, 0.5 P, RoHS Compliant
Interface Standard SPI®/3-wire serial interface


Feature Highlights

  • Four independent 16-bit High Voltage Amplifiers up to 240V
  • 2-bit Voltage Selector pins allowing 4 levels of HV Outputs, via a DC/DC Step-up Converter and Internal Loop Gain
  • Standard SPI®/3-wire serial interface for DAC programming up to 50MHz
  • Low Pass Filter to avoid resonance frequency of MEMS
  • Only Low Voltage power supplies are needed
  • Low Noise
  • Very Low Power Consumption
  • Internal Diode for Temperature Monitoring
  • Small footprint and Form Factor with QFN Package


  • Accurate HV Drivers for Electrostatic Actuators
    • MEMS (Micro-Electrical- Mechanical Systems)
    • MOEMS (Micro-Optical- Electrical-Mechanical Systems)
  • Battery powered portable systems


One Page Overview One Page Overview
Full Datasheet Full Datasheet

Evaluation Board

Evaluate the DH0485A with its evaluation board platform. Get more information here:

Evaluation Board

Functional Block Diagram

Functional Block Diagram

Pin Configuration

Pin Configuration

Contact Us

For further information including pricing, configuration, and availability, please contact us directly.
Contact us


Can we help?

Got a question? Need a quote? Want more details?

Can we help?

Log in to your Teledyne DALSA account:

Forgot your password? Reset it here. Don't have an account? Register for one.