LTC2686CUJ-12#TRPBF

Overview

The LTC2686CUJ-12#TRPBF is an 8-channel, 12-bit voltage output digital-to-analog converter (DAC) from Analog Devices. It features SoftSpan technology allowing independently programmable output ranges of 0 V to 5 V, 0 V to 10 V, ±5 V, ±10 V, and ±15 V. The device includes a precision internal 4.096 V reference with a maximum temperature coefficient of ±10 ppm/°C. DC performance specifications include a maximum integral nonlinearity (INL) error of ±0.75 LSB and differential nonlinearity (DNL) of ±0.25 LSB. The outputs are driven by rail-to-rail buffers capable of sourcing or sinking up to ±55 mA. It operates on a single analog supply voltage (VCC) ranging from 4.75 V to 5.25 V.

Feature Summary

• Eight independent channels with full 12-bit resolution across all five SoftSpan output ranges.
• Integrated precision 4.096 V reference with ±10 ppm/°C maximum temperature coefficient.
• Rail-to-rail output buffers guaranteeing ±55 mA drive capability per channel.
• Supports asynchronous toggle and sinusoidal dither operations via three multifunctional pins.

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when reviewing distributor listings. Confirm that the 'C' grade designation corresponds to the commercial operating temperature range of 0°C to 70°C as defined in the manufacturer's ordering guide. Ensure compatibility with the required supply voltages before procurement.

Selection Notes

Select this component for applications requiring multiple independent voltage ranges within a single package. The 12-bit resolution is suitable for general instrumentation where ±0.75 LSB INL is acceptable. Consider the WLCSP package option if board space is limited, though the LFCSP is standard for this part number. Verify that the IOVCC logic levels match the system microcontroller interface.

Part Context

This part belongs to the LTC2686 family of SoftSpan DACs. The 'CUJ' designation identifies the 40-lead LFCSP package variant. The '#TRPBF' suffix denotes the specific packaging configuration (Tape & Reel) and lead-free compliance status. Other variants in the series include 16-bit resolutions and different package types such as the 64-ball WLCSP.

Replacement Considerations

Direct replacements within the same family include the LTC2686-16 for higher resolution requirements. For pin-compatible alternatives with different channel counts, consider the LTC2635 or LTC2641 series, noting differences in resolution and package footprint.