DAC61404RHBR

Digital To Analog Converters Overview

The DAC61404 is a quad-channel, 12-bit digital-to-analog converter featuring high-voltage buffered outputs and an integrated precision reference. It supports unipolar ranges of 5 V, 10 V, 20 V, and 40 V, as well as bipolar ranges of ±5 V, ±10 V, and ±20 V. The device operates with AVDD up to 41.5 V and includes per-channel sense pins for remote sensing. Communication is handled via a 50-MHz SPI-compatible interface with IOVDD ranging from 1.7 V to 5.5 V. Key specifications include ±1 LSB INL, ±0.05% FSR TUE, and a 2.5-V internal reference with 10 ppm/°C drift.

Digital To Analog Converters Feature Summary

• Integrated output buffers provide high drive capability of ±15 mA and support full-scale output voltages up to 40 V unipolar or ±20 V bipolar.
• Built-in 2.5-V precision reference eliminates the need for external components, offering initial accuracy of ±2.5 mV maximum.
• Per-channel sense pins enable remote voltage sensing to eliminate IR drops and compensate for ground bounce up to ±12 V.
• Reliability features include CRC error checking, short-circuit current limiting, and a thermal alarm fault pin.

Digital To Analog Converters Applications

• Semiconductor test equipment
• Lab and field instrumentation
• Analog output modules
• Data acquisition (DAQ) systems
• LCD test applications
• Servo drive control modules

Digital To Analog Converters Procurement Notes

Verify the specific package variant RHB (32-pin VQFN) matches the design requirements. Confirm that the operating temperature range of –40°C to +125°C aligns with the environmental conditions. Ensure supply voltages DVDD, IOVDD, AVDD, and AVSS remain within recommended limits during operation.

Digital To Analog Converters Selection Notes

Select the DAC61404 when 12-bit resolution is sufficient compared to the pin-compatible 16-bit DAC81404. Consider the high-voltage output capability if external amplifiers are undesirable. Verify that the 50-MHz SPI speed meets system timing constraints. Check if the integrated reference meets noise and drift requirements for the application.

Digital To Analog Converters Part Context

The DAC61404 belongs to the DACx1404 family, which also includes the 16-bit DAC81404. Both devices share identical pinouts and functionality, differing only in resolution. This pin compatibility allows for easy upgrades from 12-bit to 16-bit performance without redesigning the PCB layout.

Digital To Analog Converters Replacement Considerations

The DAC81404 is a direct pin-compatible replacement offering higher 16-bit resolution. No other official substitutes are documented in the provided datasheet.