DAC7800LP

Reference Type:	External
Base Part Number:	DAC7800
Supplier Device Package:	16-PDIP
Package / Case:	16-DIP (0.300", 7.62mm)
Operating Temperature:	-40°C ~ 85°C
Architecture:	R-2R
INL/DNL (LSB):	±0.5 (Max), ±1 (Max)
Voltage - Supply, Digital:	5V
Voltage - Supply, Analog:	5V
Series:	--
Data Interface:	SPI
Differential Output:	No
Output Type:	Current - Unbuffered
Settling Time:	800ns
Number of D/A Converters:	2
Number of Bits:	12
Part Status:	Active
Packaging:	Tube

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Introduction to DAC7800LP

The DAC7800LP is a precision, single-supply digital to analog converter (DAC) which provides an integrated low-noise buffered voltage output. Its architecture is optimized for superior linearity, temperature stability, monotonicity, and temperature drift, making it ideal for a wide range of industrial and consumer applications.

Applications

The DAC7800LP is suitable for applications requiring a high level of accuracy over a wide temperature range. It is used in precision instrumentation, closed-loop system control, sensor calibration and medical systems. The device is also suitable for applications calling for a low power consumption, such as LED brightness control, audio control, current loop control, and waveform generation.

Working principle

The DAC7800LP operates using a delta-sigma modulation technique. The digital input to the device is a 12-bit twos-complement binary number, which is converted to an analog output voltage by summing the contributions of discrete increments across the output range.The device features an adjustable gain input that allows the reference voltage range to be set to the desired value. The onboard programmable software-controlled reference voltage circuit further enhances the output accuracy and resolution while reducing noise.

Advantages

The DAC7800LP offers a number of advantages over analog-to-digital converters, including superior dynamic range, temperature stability, accuracies over a wide operating range and ease of programming. Additionally, the device features a fast 125ns settling time, which allows for fast sampling rates and high-speed data acquisition operations.The device also has a low power consumption, making it ideal for use in low power applications. The device has a quiescent current of 5.5mA and a max output current of 8mA, which is much lower than the typical 20mA for traditional DACs.Finally, the device has a wide input/output voltage range, allowing it to operate over a wide supply voltage range. The device has a maximum input voltage of 7.5V and output voltage of 7.2V.

Conclusion

The DAC7800LP is a precision single-supply digital-to-analog converter ideal for a wide range of industrial and consumer applications. Its 12-bit, delta-sigma input ensures superior linearity, temperature stability, and monotonicity across the entire output voltage range. The device also features a low power consumption, fast sampling rate, and wide voltage range, making it an ideal choice for a number of applications.

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