DAC61408RHAT

Digital To Analog Converters Overview

The DAC61408RHAT is an 8-channel, 12-bit high-voltage output digital-to-analog converter (DAC) manufactured by Texas Instruments. It features a 40-VQFN (6x6 mm) package with exposed thermal pad. The device operates on analog and digital supply voltages ranging from 4.5V to 5.5V. Key electrical specifications include a typical settling time of 12µs and an architecture based on R-2R ladder topology. It supports serial data interfaces and includes an internal reference type. The component is rated for operation within a temperature range of -40°C to +125°C.

Digital To Analog Converters Feature Summary

• Integrated internal precision voltage reference source eliminates the need for external components in most applications.
• High drive capability allows each channel to source or sink up to 25 mA, reducing the requirement for additional operational amplifiers.
• Flexible output configuration supports multiple full-scale unipolar and bipolar voltage ranges per channel.
• Built-in power-on-reset circuit ensures outputs remain grounded until registers are correctly configured.

Digital To Analog Converters Applications

• Optical network equipment requiring precise high-voltage control signals.
• Industrial automation systems utilizing multi-channel signal generation.
• Test and measurement instruments needing stable, high-resolution voltage outputs.

Digital To Analog Converters Procurement Notes

Verify the specific suffix RHAT corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 12-bit resolution variant meets the system accuracy requirements, as the family also offers 14-bit and 16-bit options. Ensure the 40-VQFN footprint matches the PCB layout design rules for thermal dissipation and soldering reliability.

Digital To Analog Converters Selection Notes

Select this part when eight independent high-voltage channels are necessary within a compact form factor. The internal 2.5V reference simplifies board space constraints compared to external reference solutions. Consider the ±1 LSB INL specification for linearity needs. Evaluate the 12-bit resolution against application demands, noting that higher resolution variants like the DAC71408 or DAC81408 share the same pinout if greater precision is required.

Digital To Analog Converters Part Context

The DAC61408 is part of the DACx1408 series, which includes the DAC71408 (14-bit) and DAC81408 (16-bit). These devices are pin-compatible, allowing for easy upgrades in resolution without redesigning the hardware. The series is designed for applications demanding high voltage swings and strong current drive capabilities directly from the DAC outputs.

Digital To Analog Converters Replacement Considerations

Pin-compatible substitutes within the same family include the DAC71408RHAT and DAC81408RHAT, offering higher resolutions of 14-bit and 16-bit respectively. Other Texas Instruments high-voltage DACs may require significant schematic and layout changes due to differing pinouts or interface protocols.