DAC61401PWR

Digital To Analog Converters Overview

The DAC61401PWR is a single-channel, 12-bit buffered high-voltage output digital-to-analog converter (DAC) from Texas Instruments. It features an integrated 2.5V precision reference and supports unipolar supply voltages from +4.5V to +41.5V and bipolar supplies from ±4.5V to ±21.5V. The device offers 14 user-programmable output ranges, including ±5V, ±10V, ±20V, 0V to 5V, 0V to 10V, 0V to 20V, and 0V to 40V. It communicates via a 50MHz 4-wire SPI-compatible interface with readback and daisy-chain capabilities. Operating over a temperature range of –55°C to +125°C, it is housed in a 20-pin TSSOP package.

Digital To Analog Converters Feature Summary

• Exceptional linearity with maximum INL/DNL of 1LSB and ultra-low glitch energy of 1nV-s.
• Integrated 10ppm/°C precision reference voltage source for stable operation.
• Built-in reliability features including cyclic redundancy check (CRC) and a fault detection pin.

Digital To Analog Converters Applications

• Semiconductor test and ATE
• Lab and field instrumentation
• PLC, DCS, and PAC systems
• Analog output modules
• Servo drive control modules

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix 'PWR' corresponds to the 20-pin TSSOP package variant when sourcing components. Confirm that the required operating conditions align with the specified analog supply voltage limits and digital interface voltage levels to ensure proper functionality within the designated temperature range.

Digital To Analog Converters Selection Notes

Select the DAC61401PWR for applications requiring a single-channel high-voltage output with 12-bit resolution. Ensure the system design accommodates the wide analog supply voltage range up to +41.5V and utilizes the internal 2.5V reference or an external source as needed. Consider the 20-pin TSSOP package dimensions for PCB layout constraints.

Digital To Analog Converters Part Context

The DAC61401 is part of the DACx1401 family, which includes the pin-compatible 16-bit DAC81401. Both devices share identical packaging options and interface protocols, allowing for flexible design upgrades based on resolution requirements without altering the physical board layout.

Digital To Analog Converters Replacement Considerations

The DAC81401 serves as a direct functional substitute offering higher 16-bit resolution while maintaining pin compatibility. Designers should verify if the additional resolution meets specific accuracy requirements before substituting.

Digital To Analog Converters FAQ

What is the maximum serial clock frequency supported by the DAC61401?

The device supports a maximum serial clock frequency of 50MHz when the IOVDD supply is between 2.7V and 5.5V.

How does the FAULT pin operate?

The FAULT pin is an open-drain output that goes low (active) when a fault condition is detected. An external 10kΩ pullup resistor is required for proper operation.

Can the DAC61401 support capacitive loads?

Yes, connecting a typical 470pF capacitor between the CCOMP pin and VOUT allows the device to drive capacitive loads up to 1μF, though this increases settling time.