ADAR7251WBCSZ

Number of A/D Converters:	4
Base Part Number:	ADAR7251
Supplier Device Package:	48-LFCSP (7x7)
Package / Case:	48-WFQFN Exposed Pad, CSP
Operating Temperature:	-40°C ~ 125°C
Features:	PGA, Simultaneous Sampling
Voltage - Supply, Digital:	1.62 V ~ 1.98 V
Voltage - Supply, Analog:	2.97 V ~ 3.6 V
Reference Type:	Internal
Architecture:	Sigma-Delta
Series:	Automotive
Ratio - S/H:ADC:	--
Configuration:	PGA-ADC
Data Interface:	SPI, Parallel
Input Type:	Differential
Number of Inputs:	4
Sampling Rate (Per Second):	1.8M
Number of Bits:	16
Part Status:	Active
Packaging:	Tray

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Introduction:

• The ADAR7251WBCSZ is a high-speed, low-power, digital-to-analog converter (DAC), capable of converting a wide range of input digital signals into an analog output. It is an ideal component for a wide range of analog-to-digital (A/D) and digital-to-analog (D/A) applications.
• With the goal of providing a highly integrated, easy-to-use solution, the ADAR7251WBCSZ incorporates a low-noise amplifier (LNA), level shifter, and fast-settling output stage, in a single device. With an input range of 0 to 3.3 V and an output range of 0 to 200 mV, it provides excellent dynamic performance that is suitable for a wide range of precision data acquisition applications.

Application Field

• The ADAR7251WBCSZ DAC is commonly used in many precision data acquisition systems, such as those used for instrumentation, test and measurement, automotive, aerospace, and medical applications. It is an ideal choice for any application requiring high speed and accuracy, with low power consumption.
• The ADAR7251WBCSZ is capable of converting digital signals such as pulse-width modulation (PWM), frequency modulation (FM), and phase modulation (PM) into an analog output. The dynamic range and linearity of the output signal make it well-suited for applications such as sensor control, motor control, and audio systems.
• The high-speed, low-noise amplifier stage on the ADAR7251WBCSZ allows for excellent signal-to-noise performance, with low distortion. This makes it well suited for applications such as audio processing, sound card applications, and pulse train applications.
• The ADAR7251WBCSZ is also useful in applications where a digital input is used to control an analog output, such as in high-end digital-to-analog converters or digital potentiometers. It is also popular in digital image processing applications, where digital signals are required to control analog components.

Working Principle

The basic working principle of the ADAR7251WBCSZ is the conversion of digital signals into analog signals. This is accomplished by the conversion of each digital bit into a corresponding analog value. The analog output is then adapted to a level that is appropriate for the application.The input to the DAC is a series of digital bits that have been encoded in order to represent the magnitude of the desired analog output. This encoding process can be done in various ways, such as pulse width modulation (PWM), frequency modulation (FM), and phase modulation (PM).The ADAR7251WBCSZ DAC uses an architecture of highly integrated circuits to convert the encoded digital input into an analog output. The first stage of the circuit is a low-noise amplifier, which amplifies the digital signal and reduces noise. The second stage is a level shifter, which shifts the amplified signal to the proper level for the output stage.The output stage is a fast-settling stage, which rapidly converts the shifted digital signal into an analog output. This rapid conversion allows for precise control of the analog output, while also providing excellent dynamic performance.The ADAR7251WBCSZ also incorporates a power-on reset feature, which ensures that the DAC is reset to its initial values once power is applied. This is an important feature for many precision data acquisition applications, where it is critical that the ADC starts at a known state.In summary, the ADAR7251WBCSZ is a high-speed, low-power, digital-to-analog converter, designed for use in precision data acquisition applications. It provides excellent dynamic performance with low noise and low distortion, and is suitable for a wide range of applications, from sensor control to digital image processing.

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