**LTC2668CUJ-12#PBF: A 12-Bit, 8-Channel Voltage Output DAC with Precision Reference**

The **LTC2668CUJ-12#PBF** from Analog Devices is a highly integrated, **8-channel, 12-bit voltage-output digital-to-analog converter (DAC)** that stands out in applications demanding high channel density, precision, and system simplicity. This device combines a suite of powerful features, most notably an **internal, high-precision 10ppm/°C reference**, which eliminates the need for an external reference component and significantly reduces the overall system design footprint and cost.

Each of the eight DAC channels can operate independently, providing **software-programmable output ranges of 0V to 5V, 0V to 10V, ±5V, or ±10V**. This flexibility allows a single IC to interface with a wide variety of analog systems and sensors. The device includes per-channel power-on reset circuitry that ensures the DAC outputs initialize to zero-scale or a mid-scale voltage, a critical feature for preventing unwanted signals in sensitive systems during power-up.

A key advantage of the LTC2668 is its **integrated precision reference**, which delivers 2.5V and 5V outputs for both the DAC core and external use. This integration guarantees excellent stability and low drift over temperature, directly contributing to the system's long-term accuracy without additional calibration. The DAC communicates via a standard **SPI-compatible serial interface**, facilitating easy connection to most microcontrollers and processors.

The LTC2668CUJ-12#PBF is offered in a compact 40-pin 5mm x 5mm QFN package, making it an ideal solution for space-constrained, multi-channel systems. Its combination of high channel count, flexible output ranges, and a built-in reference makes it exceptionally suitable for industrial automation, test and measurement equipment, and data acquisition systems where reliability and precision are paramount.

**ICGOO**D**FIND**: The LTC2668CUJ-12#PBF is a superior choice for designers seeking to **maximize channel density and simplify system design** without compromising on performance. Its integrated precision reference and flexible output ranges provide a complete, high-accuracy analog output solution in a single package.

**Keywords**: 12-Bit DAC, 8-Channel, Voltage Output, Precision Reference, SPI Interface.