DAC38RF86EVM

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The DAC38RF86EVM evaluation module provides a complete, low-cost platform for evaluation, development, and demonstration of the Texas Instruments 320Kb/s DDS/PLL/DAC38RF86 device. This device combines a highly programmable Phase-Locked loop (PLL), Digital-to-Analog Converter (DAC), and Programmable-Logic Device (PLD). The DAC38RF86 is a Texas Instruments CMOS, single-channel, 8-bit monolithic DAC. The on-chip PLL provides the freedom to connect microprocessors or other control circuitry without requiring external clock sources. The on-chip DAC provides an 8-bit resolution over an output voltage range of 0V to 3.3V.

What is DAC38RF86EVM?

The DAC38RF86EVM is an evaluation board that supports the features of the DAC38RF86 device. This evaluation board is designed to accept digital commands from various external control sources such as microcontrollers or other microprocessor-based devices. The board supports up to 8 digital inputs. These inputs can be used to control and adjust different settings of the device such as the output voltage range and the PLL reference frequency. The evaluation board also provides a convenient USB interface for communication with a PC, making it easy to test and adjust the device.

Application Field and Working Principle of DAC38RF86EVM

The DAC38RF86EVM board offers a wide range of applications for embedded and industrial applications. The board is ideal for high-resolution voltage control, such as converting a digital input to an analog voltage output. This allows the DAC38RF86EVM to be used for control and monitoring in real-time applications such as motor control, power supply voltage control, temperature sensing, and data acquisition. Additionally, the on-chip PLL can be used in conjunction with the DAC to generate high-frequency clock signals for data communications or other digital signal processing applications.

The DAC38RF86EVM works by converting a digital input (including 8-bit data) to an analog voltage output. The device features an 8-bit consecutive accuracy with a voltage resolution of up to 0.005 V. The input voltage range is 0V to 3.3V with an output voltage range of 0V to 3.3V. Additionally, this evaluation board provides a high-precision, adjustable PLL clock generator with up to 160 MHz or 200 MHz of resolution. The PLL can be used to generate clocks for data transmission, control signals, or high-accuracy time-based events.

The DAC38RF86EVM can be configured to accept commands from various digital sources such as a microcontroller, a microprocessor, or other digital logic circuits. The evaluation board also allows for PWM input to control the DAC output voltage. Additionally, the board supports various alternative sources such as I2C, SPI, and other serial interfaces. The device also has the option of using an external reference voltage to control the output voltage.

Conclusion

The DAC38RF86EVM is a versatile and powerful evaluation board designed to accurately control an analog output voltage based on digital command inputs. This board is ideal for multiple applications, including motor control, power supplies, temperature sensors, data acquisition, and digital signal processing. The board features an 8-bit resolution with a voltage range of 0V to 3.3V and a programmable PLL frequency up to 160 MHz or 200MHz. Additionally, the board supports various control sources for digital command inputs, including microcontroller, microprocessor, I2C, SPI, and external reference voltage.

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