LTC2664HUH-16#PBF

Overview

The LTC2664HUH-16#PBF is a quad-channel, 16-bit digital-to-analog converter (DAC) from Analog Devices. It features integrated precision references with a maximum temperature coefficient of 10ppm/°C and SoftSpan technology allowing five independently programmable output ranges up to ±10V. The device includes rail-to-rail output buffers capable of driving ±10mA loads. It operates on analog supplies ranging from 4.5V to 15.75V and digital logic levels as low as 1.71V via a 3-wire SPI/Microwire interface. Key electrical specifications include a settling time of 20µs for the ±10V range, an integral nonlinearity (INL) of ±4 LSB, and a differential nonlinearity (DNL) of ±0.35 LSB.

Feature Summary

• Quad-channel 16-bit resolution with independently programmable SoftSpan output ranges: 0V to 5V, 0V to 10V, ±2.5V, ±5V, and ±10V.
• Integrated precision reference with a maximum temperature coefficient of 10ppm/°C; supports external reference input.
• Rail-to-rail output buffers guarantee monotonicity over temperature and drive ±10mA load currents.
• Analog multiplexer with auxiliary inputs and A/B toggle capability for software or hardware control.

Applications

• Optical networking systems
• Instrumentation and data acquisition
• Automatic test equipment
• Process control and industrial automation

Procurement Notes

Verify the specific H-grade suffix indicates the automotive temperature range (-40°C to +125°C). Confirm the #PBF designation ensures lead-free compliance. Check that the QFN-32 package matches the PCB footprint requirements. Ensure supply voltage rails align with the specified operating limits.

Selection Notes

Select this model for applications requiring high linearity and wide bipolar output swings. The H-grade variant is suitable for harsh environments exceeding standard industrial temperatures. Consider the internal reference stability if external precision references are unavailable. Verify that the 3-wire serial interface timing meets the system clock constraints.

Part Context

This component belongs to the LTC2664 family, which also includes 12-bit variants and commercial/industrial temperature grades. The HUH suffix specifically denotes the 32-lead (5mm × 5mm) QFN package combined with the extended -40°C to +125°C operating range. It shares pinout compatibility with other members of the series for design flexibility.

Replacement Considerations

Direct substitutes within the same package and specification profile include the LTC2664IUH-16#PBF for industrial temperature ranges or the LTC2664CUH-16#PBF for commercial applications. Lower-resolution options like the LTC2664HUH-12#PBF are compatible if 12-bit accuracy suffices.