AD7845KNZ

Reference Type:	External
Base Part Number:	AD7845
Supplier Device Package:	24-PDIP
Package / Case:	24-DIP (0.300", 7.62mm)
Operating Temperature:	0°C ~ 70°C
Architecture:	R-2R
INL/DNL (LSB):	±0.75 (Max), ±1 (Max)
Voltage - Supply, Digital:	--
Voltage - Supply, Analog:	±14.25 V ~ 15.75 V
Series:	--
Data Interface:	Parallel
Differential Output:	No
Output Type:	Voltage - Buffered
Settling Time:	5µs
Number of D/A Converters:	1
Number of Bits:	12
Part Status:	Obsolete
Packaging:	Tube

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Digital to Analog Converters (DAC) are electronic circuits that convert digital signals into analog signals, allowing analog signals to be manipulated in a digital environment. The AD7845KNZ is a 16 bit Digital to Analog Converter (DAC) that converts digital input signals into analog output signals. It is mainly used in medical and industrial applications that require precise voltage control.The AD7845KNZ is a single-channel device that is designed for low noise, low power consumption, and high accuracy. It uses a highly integrated design with built-in 16-bit digital-to-analog converters, signal amplification, and low-noise logic circuitry. This helps reduce the size and complexity of the circuitry and reduces power consumption. The device also features an on-chip reference resistor that is used to measure and maintain accurate 16-bit linear analog signals.The AD7845KNZ uses voltage-mode conversion technology, which eliminates switching jitter, reduces latency, and provides a high dynamic range. This device also has an SPI interface that simplifies the programming of the device. It can be programmed through the SPI command to operate in either unipolar or bipolar mode.The AD7845KNZ has an input voltage range of 0-4.25 volts, which is suitable for most medical applications. The output range is from 0 to 3.3 volts, with a resolution of 16.7 mV. The device supports a variety of sampling rates, from 500 Hz to 8 kHz. The device also features a low power consumption of less than 40 mA.The AD7845KNZ includes a low pass filter that helps reduce high frequency noise, which can be a problem in medical applications. It also includes an internal temperature sensor and a self-test function that allows the device to be tested in situ.The application field of the AD7845KNZ is wide and varied. It is used in medical devices that require precise voltage control such as electrophysiology accelerometers, ionic pumps, and pressure monitors. It is also used in industrial applications that require analog signal control such as semiconductor wafer processing and manufacturing, medical imaging, and communication systems.The working principle of the AD7845KNZ is quite simple. It converts a digital input signal into an analog output signal by comparing the input signal with an internal reference voltage. The internal reference voltage is derived from an on-chip reference resistor. The reference voltage is then converted to the analog output by comparing it to the input signal. The result is an accurate 16-bit linear analog signal.The AD7845KNZ provides accurate voltage control for medical and industrial applications that require precise voltage control. Its input voltage range is suitable for a wide range of applications and its low power consumption makes it ideal for battery-powered applications. The device also includes built-in filters which help reduce noise as well as internal temperature sensors and self-testing functions. All these features make the AD7845KNZ an ideal choice for any application that needs precise voltage control.

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