AD7945AN-B

Reference Type:	External
Base Part Number:	AD7945
Supplier Device Package:	20-PDIP
Package / Case:	20-DIP (0.300", 7.62mm)
Operating Temperature:	-40°C ~ 85°C
Architecture:	R-2R
INL/DNL (LSB):	±1 (Max), ±0.9 (Max)
Voltage - Supply, Digital:	3 V ~ 5.5 V
Voltage - Supply, Analog:	3 V ~ 5.5 V
Series:	--
Data Interface:	Parallel
Differential Output:	No
Output Type:	Current - Unbuffered
Settling Time:	5µs (Typ)
Number of D/A Converters:	1
Number of Bits:	12
Part Status:	Obsolete
Packaging:	Tube

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AD7945AN-B Application Field and Working PrincipleData acquisition is used in many different areas of research, engineering, and manufacturing. Typically, data is collected, converted, and stored in digital form. To use this data, however, it is often necessary to convert the digital information back into analog signals. Data Acquisition - Digital to Analog Converters (DAC) are used to accomplish this task. The AD7945AN-B is a high performance 16-bit DAC which provides excellent signal-to-noise performance and low power consumption. The AD7945AN-B is a CMOS-based, monolithic bipolar output DAC which integrates a voltage reference and an op-amp for buffering the output signal. The DAC has a large differential linearity error, low glitch energy, and low offset. It features a single pin power-on reset circuit, a separate reset output pin, and an option to disable the output between conversions. The AD7945AN-B works by using an internal conversion table. The DAC takes the 16-bit input and converts it to the equivalent voltage output range. The output voltage range default is between 0V and 2.5V, although this can be changed with an external circuit. The DAC can also accept as many as 8 clock frequency inputs and provide an output range of up to 3.3V. The AD7945AN-B is well suited for applications that involve precision data acquisition and processing. It is ideal for use in battery operated applications because of its low power consumption. The DAC is also ideal for use in applications that require fast conversion rates, such as data loggers, energy meters, and precision instrumentation.In addition to data acquisition, the AD7945AN-B is also widely used in analog-to-digital conversions. This allows the user to convert analog signals such as sound waves or voltage readings into a digital format which can then be stored or used to process additional data. It is also used in applications such as motor control, DC motor speed control, closed loop motor control, and power monitoring. The low power draw of the AD7945AN-B is further enhanced by its power down features and power-on reset circuit. This reduces the amount of energy used in applications that need to be powered down frequently. The optional output buffer also gives users the ability to control the output impedance, allowing for better signal-to-noise ratios.The AD7945AN-B is an excellent choice for applications that require precision data acquisition and processing. Its wide input-range, superior linearity, and low power draw make it a reliable and efficient converter for a variety of applications.

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