DAC61404RHBT

Digital To Analog Converters Overview

The DAC61404RHBT is a quad-channel, 12-bit buffered high-voltage-output digital-to-analog converter (DAC) from Texas Instruments. It features an integrated low-drift 2.5-V precision reference and supports user-selectable full-scale output voltages of ±5 V, ±10 V, ±20 V, 5 V, 10 V, 20 V, or 40 V. The device provides a maximum total unadjusted error (TUE) of ±0.05% FSR and ±1 LSB INL at 12-bit resolution. Communication is handled via a 50-MHz SPI-compatible serial interface operating between 1.7 V and 5.5 V. Each channel includes dedicated sense pins for remote sensing up to ±12 V ground bounce. The component operates within a temperature range of –40°C to +125°C and is housed in a 5-mm × 5-mm, 32-pin QFN package.

Digital To Analog Converters Feature Summary

• Integrated 2.5-V precision internal reference with low drift characteristics
• High drive capability output buffers capable of sourcing or sinking up to 15 mA
• Per-channel remote sense pins to eliminate IR drops and compensate for ground bounce
• Built-in reliability features including CRC error check, short-circuit limit, and thermal alarm

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 suffix RHBT corresponds to the 32-pin VQFN package configuration. Confirm that the internal reference selection matches application requirements, as external references are supported via the REFIO pin. Ensure supply voltage levels for AVDD, AVSS, DVDD, and IOVDD align with the recommended operating conditions specified in the datasheet before finalizing procurement orders.

Digital To Analog Converters Selection Notes

Select the DAC61404 when a quad-channel solution with high-voltage outputs and integrated referencing is required. This model is suitable for applications needing independent programmability of each channel's output range. Consider the DAC81404 if 16-bit resolution is necessary instead of the 12-bit resolution provided by this part. Evaluate the need for per-channel sense pins to determine if remote sensing capabilities are essential for minimizing load regulation errors.

Digital To Analog Converters Part Context

The DAC61404 belongs to the DACx1404 family, which also includes the 16-bit DAC81404. These devices are pin-compatible, allowing for design flexibility regarding resolution requirements without changing the PCB layout. The series is designed for high-precision applications requiring multiple buffered analog outputs with minimal external component count due to the integrated reference and driver stages.

Digital To Analog Converters Replacement Considerations

The DAC81404 serves as a direct pin-compatible replacement offering 16-bit resolution. For single-channel applications, the DAC61402 may be considered. Verify that any substitute maintains the required high-voltage output span and current drive capabilities.