DAC7512E/2K5

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Data Acquisition - Digital to Analog Converters (DAC) are broadly used in almost every industry and can come in various shapes and sizes. The DAC7512E/2K5 is a 12-bit, four-channel Digital to Analog converter that is very popular in many applications to convert analog signals into digital signals and vice versa. The DAC7512E/2K5 operates at a maximum bandwidth of 20MHz and a typical resolution exceeding 8Vpp with a max output of ±12V.

Application Field

The DAC7512E/2K5 is widely used in many industries such as medical and military applications. It is ideal for generating waveforms for digital waveform generators, radiography, point-of-sale systems and test and measurement equipment. Additionally, it is also used in automotive applications that require precision control. It is designed with voltage output ranges of ±12V and while it provides digital resolution up to 12-bits with conversion speeds up to 1.7V/µs, it is also available in a wide variety of gain options ranging from 25mV to 12V/LSB that addresses a wide range of applications.

Working Principle

The DAC7512E/2K5 is a 4-channel Digital to Analog Converter that contains four independent DACs (DAC-1 to DAC-4) on a single semiconductor substrate. All the DACs are operated from the same clock signal, but each one is independently programmable. This way, a wide range of applications is supported. Inside the device, each DAC is composed of several integrators that have a high open loop gain, providing an accurate analog output for a given digital input. The gain of each DAC adjuster can be set using external resistor networks.

The internal architecture of the DAC7512E/2K5 consists of a 12-bit Digital-to-Analog Convertor (DAC) and four independently programmable gain adjuster networks per DAC (pGA-1 to pGA-4). The pGA networks provide gain settings ranging from 25mV/LSB to 12V/LSB, providing each DAC with greater precision and flexibility. Each DAC\'s signal output is converted to its analog form by the on-board high-speed DAC. This allows the DAC7512E/2K5 to achieve high levels of accuracy even in changing temperature and humidity conditions.

It is important to note that the DAC7512E/2K5 requires a proper power supply for its operating voltage (Vcc) and for its reference voltage (Vref). The supply voltage should be within ±5% of the rated value, and the reference voltage should be within ±1.0%. If the power supply is well regulated, this guarantees the best results in terms of accuracy and performance of the DAC.

Conclusion

The DAC7512E/2K5 is a 12-bit, four-channel digital-to-analog converter, with the ability to generate signals with high precision and accuracy. Its applications are spread across many industries, such as medical, military, point-of-sale systems, radiography and test and measurement equipment. It operates at a maximum bandwidth of 20MHz and a typical resolution exceeding 8Vpp, with a max output voltage of ±12V. Inside the device, each DAC is composed of several integrators with a high open loop gain, providing an accurate analog output for a given digital input. Furthermore, its PGA network provides the flexibility to adjust the gain from 25mV to 12V/LSB. While it requires a proper power supply for its operating and reference voltage, a well regulated power supply ensures best performance.

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