DAC716UB/1KG4

Reference Type:	Internal
Base Part Number:	DAC716
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Operating Temperature:	-40°C ~ 85°C
Architecture:	R-2R
INL/DNL (LSB):	±4 (Max), ±4 (Max)
Voltage - Supply, Digital:	--
Voltage - Supply, Analog:	±11.4 V ~ 16.5 V
Series:	--
Data Interface:	SPI
Differential Output:	No
Output Type:	Voltage - Buffered
Settling Time:	10µs
Number of D/A Converters:	1
Number of Bits:	16
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The DAC716UB/1KG4 is a monolithic data acquisition Digital to Analog Converter (DAC), providing precise conversion from digital words to analog signals. The applications of DAC716UB/1KG4 include industrial, instrumentation and scientific purposes. It is highly recommended for applications that require low current consumption, low power dissipation, and excellent AC and DC characteristics.

Working Principle

The working principle of DAC716UB/1KG4 is based on the use of the delta-sigma technique, a technique that uses error signals to reduce the errors in the digital-to-analog conversions. The device uses a topology of 8-bits plus sign, in which a digital word to be converted is stored in a serial data register. The data register is then clocked from the Over Sampling Clock (OSC), which is in turn supplied to the DAC716UB/1KG4 at a frequency that is 5 times the desired frequency of the output signal. At each sampling clock the value stored in the data register is compared to a reference voltage which is generated by an on-chip, low-power voltage reference. The difference between the values is used to determine the magnitude and direction of the current output. The magnitude of the current is then equal to the difference between the reference voltage and the data register value. The 8-bit data register is also used to control the conversion direction converting negative or positive values, by operating in 2\'s complement arithmetic. The difference between the two is then added to the reference voltage to form the output signal.

Features

The DAC716UB/1KG4 is designed to produce low-distortion analog outputs at low ac and dc power dissipation. It also features a low current consumption rate and wide output range. It has a low offset, low noise and low drift, and excellent linearity. The structure of its analog outputs is protected by a low-noise insulated gate bipolar transistor (IGBT). The DAC716UB/1KG4 has a 64-pin TSOP narrow-pitch QFP for the interface. This provides connectivity to digital signals on the clock side, to serial input and output pins on the signal side. Low power usage is ensured by the multiplexer circuit and low signal-to-noise ratio of the clock. The device is also fault-tolerant and can handle events like under/over range or open-circuit conditions.

Conclusion

In conclusion, the DAC716UB/1KG4 provides a flexible and reliable solution for data acquisition by converting digital words to accurate analog signals. It is designed to consume low power with a wide output range and low drift, noise and offset. Its low-noise IGBT output protection ensures that the analog output is protected from potential shocks or over-drive issues associated with industrial applications. With its 64-pin wide-pitch QFP and multiplexer circuit it reduces power usage even further and provides a fault tolerant system. The DAC716UB/1KG4 is a great choice for precision analog to digital conversion in a variety of industrial, instrumentation, and scientific applications.

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