LTC2688CUJ-12#PBF

Overview

The LTC2688CUJ-12#PBF is a 16-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 an internal precision 4.096 V reference with a maximum temperature coefficient of ±5 ppm/°C. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±0.75 LSB for the 12-bit mode, guaranteed monotonicity, and rail-to-rail output buffers capable of sourcing or sinking up to 20 mA. It operates on a single analog supply voltage (VCC) of 4.75 V to 5.25 V.

Feature Summary

• 16 independent channels with individually programmable SoftSpan output ranges (0 V to 5 V, 0 V to 10 V, ±5 V, ±10 V, ±15 V).
• Integrated precision 4.096 V reference with ±5 ppm/°C maximum temperature coefficient.
• Maximum INL error of ±0.75 LSB and DNL of ±0.25 LSB in 12-bit mode.
• Built-in rail-to-rail output buffers drive ±20 mA loads.

Applications

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

Procurement Notes

Verify the specific suffix 'CUJ-12' against the manufacturer's ordering guide to confirm the commercial temperature range (0°C to 70°C), LFCSP package type, and 12-bit resolution variant. Ensure compatibility with system power supply requirements and interface logic levels before procurement.

Selection Notes

Select this component when multiple DAC channels are required with flexible voltage range configurations. The integrated reference simplifies design by reducing external component count. Consider the ±20 mA output drive capability for direct load interfacing without additional amplification stages.

Part Context

This part belongs to the LTC2688 family of SoftSpan DACs. The 'C' indicates the commercial temperature range, while 'I' denotes industrial (-40°C to +85°C) and 'H' denotes extended (-40°C to +125°C) ranges. The '12' specifies the 12-bit resolution version, distinct from the 16-bit variant.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and specification compatibility if considering alternative multi-channel DACs from other manufacturers.