LTC2664CUH-12#PBF

Overview

The LTC2664CUH-12#PBF is a quad-channel, 12-bit digital-to-analog converter (DAC) from Analog Devices. It features independently programmable SoftSpan output ranges up to ±10V and an integrated precision reference with a maximum temperature coefficient of 10ppm/°C. The device includes built-in rail-to-rail output buffers capable of driving ±10mA loads and guarantees monotonicity over the operating temperature range. It utilizes a 3-wire SPI/Microwire-compatible serial interface operating at clock rates up to 50MHz with logic levels as low as 1.71V. The component is housed in a 32-lead (5mm × 5mm) QFN package and operates within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Quad-channel architecture with independently programmable output ranges: 0V to 5V, 0V to 10V, ±2.5V, ±5V, and ±10V
• Integrated precision reference with a maximum temperature coefficient of 10ppm/°C
• Built-in rail-to-rail output buffers guaranteeing ±10mA drive capability
• SPI/Microwire-compatible 3-wire serial interface supporting logic voltages down to 1.71V

Applications

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

Procurement Notes

Verify that the ordering suffix #PBF confirms lead-free construction and RoHS compliance. Confirm the 'C' grade designation matches the required commercial temperature range of 0°C to 70°C for the specific application environment. Ensure the 'UH' package type corresponds to the 32-lead QFN footprint required by the PCB layout.

Selection Notes

Select this part when four independent voltage outputs are required with high linearity and low drift. The 12-bit resolution offers a balance between cost and performance for applications not requiring 16-bit precision. Consider the internal reference if system complexity must be minimized; otherwise, an external reference can be applied to the REF pin for additional range options or tighter stability requirements.

Part Context

This component belongs to the LTC2664 family, which also includes 16-bit variants (LTC2664-16). The CUH-12 suffix specifically denotes the 12-bit resolution version in the commercial temperature grade. Other grades in the family include Industrial (I) ranging from –40°C to 85°C and Automotive (H) ranging from –40°C to 125°C, all sharing the same 32-lead QFN package form factor.

Replacement Considerations

Direct functional replacements within the same family include the LTC2664IUH-12#PBF for industrial temperature operation and the LTC2664HUH-12#PBF for automotive temperature operation. These parts share identical pinouts and electrical characteristics but differ in their specified operating temperature ranges.