5962-9176403MXA

Overview

The Analog Devices DAC8412 is a quad, 12-bit voltage output digital-to-analog converter with readback capability. Built using a complementary BiCMOS process, it offers high package density in a 28-lead PLCC package. The device supports operation from single +5 V to ±15 V supplies and utilizes dual reference inputs (VREFH and VREFL) to configure unipolar or bipolar output ranges without relying on internal resistors for offsetting. It features double-buffered inputs, fast bus access, and an active-low RESET function that loads all output registers to midscale. Power dissipation is less than 330 mW with ±15 V supplies.

Feature Summary

• Quad 12-bit resolution with true buffered voltage outputs capable of sourcing/sinking 5 mA
• Readback capability via bidirectional 12-bit data bus
• Double-buffered inputs allowing simultaneous update of all channels
• RESET pin forces outputs to midscale (Code 0x800)

Applications

• Automatic test equipment
• Digitally controlled calibration systems
• Servo controls
• Process control equipment

Procurement Notes

Verify the specific grade (E or F) and package variant required for the MIL-STD-883 application. Ensure supply voltages and reference configurations match the electrical characteristics tables for the intended operating temperature range. Confirm lead termination and moisture sensitivity handling procedures are followed upon receipt.

Selection Notes

Select this component when four independent 12-bit voltage outputs with readback are needed in a single package. Choose the DAC8412 over the DAC8413 if the system requires a known midscale state upon power-up or reset. Ensure the parallel interface timing requirements align with the host controller's capabilities.

Part Context

This part belongs to the DAC8412/DAC8413 family of quad 12-bit DACs. The primary distinction within the family is the reset behavior: the DAC8412 resets to midscale, while the DAC8413 resets to zero scale. Both share identical electrical specifications and pinouts.

Replacement Considerations

Public confirmed substitute part numbers include DAC8413 for zero-scale reset applications. Other variants in the package include DAC8412FPZ (Plastic DIP), DAC8412FT (Ceramic DIP), and DAC8412FTC (Ceramic LCC). Verify thermal resistance and pin compatibility before substitution.

FAQ

What is the difference between the DAC8412 and DAC8413?

The only functional difference is the RESET behavior. The DAC8412 resets all output registers to midscale (Code 0x800), while the DAC8413 resets them to zero scale (Code 0x000).

Can the DAC8412 operate with a single +5 V supply?

Yes, the device can operate with a single +5 V supply (VDD = +5 V, VSS = 0 V). In this configuration, the negative supply current is specified differently, and power dissipation drops to approximately 60 mW.

How is the output voltage range determined?

The output voltage swing is set by the external reference inputs VREFH and VREFL. Unipolar positive output is achieved with VREFL at 0 V and VREFH at a positive voltage. Bipolar outputs are configured by connecting both references to nonzero voltages.