AD5378ABC

Digital To Analog Converters Overview

The AD5378ABC is a high-density integrated circuit containing 32 independent 14-bit digital-to-analog converters (DACs) housed in a 108-lead CSPBGA package measuring 13 mm × 13 mm. It provides buffered bipolar voltage outputs with a maximum span of 17.5 V, determined by external reference inputs VREF(+) and VREF(−). The device supports both parallel and serial interfaces, including SPI and Microwire compatibility. Key specifications include a maximum settling time of 30 µs, guaranteed monotonicity to 14 bits, and an integral nonlinearity error of ±3 LSB. It operates with analog supplies ranging from ±11.4 V to ±16.5 V and digital logic levels from 2.5 V to 5.5 V.

Digital To Analog Converters Feature Summary

• Integrates 32 channels of 14-bit resolution DACs in a compact 108-lead CSPBGA footprint.
• Features buffered bipolar voltage outputs with a maximum span of 17.5 V relative to REFGND.
• Supports dual interface modes: double-buffered parallel and 3-wire serial (SPI/Microwire compatible).
• Includes system calibration functions for user-programmable offset and gain adjustments per channel.

Digital To Analog Converters Applications

• Level setting in automatic test equipment (ATE)
• Variable optical attenuators (VOAs)
• Optical switches
• Industrial control systems

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'ABCZ' against the manufacturer's current ordering guide to confirm pinout and packaging details. Ensure that the required analog supply voltages (±11.4 V to ±16.5 V) are available within the design constraints. Confirm that the 108-ball CSPBGA thermal impedance and reflow soldering profiles align with the assembly capabilities.

Digital To Analog Converters Selection Notes

Select this component when a high channel count (32) and 14-bit precision are required in a single package. It is suitable for applications needing simultaneous updates via the LDAC pin and programmable output scaling. Consider the power dissipation limits (up to 2000 mW loaded) and the need for multiple REFGND pins when designing the PCB layout for thermal and electrical performance.

Digital To Analog Converters Part Context

The AD5378 belongs to Analog Devices' family of high-channel-count bipolar voltage output DACs. It is functionally similar to the AD5379, which offers 40 channels in the same package type. Unlike lower-voltage single-supply variants such as the AD5380 or AD5390 series, the AD5378 requires dual positive and negative analog power supplies to achieve its full bipolar output range.

Digital To Analog Converters Replacement Considerations

The AD5379ABC serves as a direct functional substitute offering 40 channels in the identical 108-lead CSPBGA package. Designers must verify that the additional channel count does not impact board space or power budget requirements.