AD7864ASZ-1

Number of A/D Converters:	1
Base Part Number:	AD7864
Supplier Device Package:	44-MQFP (10x10)
Package / Case:	44-QFP
Operating Temperature:	-40°C ~ 85°C
Features:	Simultaneous Sampling
Voltage - Supply, Digital:	5V
Voltage - Supply, Analog:	5V
Reference Type:	External, Internal
Architecture:	SAR
Series:	--
Ratio - S/H:ADC:	4:1
Configuration:	S/H-MUX-ADC
Data Interface:	Parallel
Input Type:	Single Ended
Number of Inputs:	4
Sampling Rate (Per Second):	520k
Number of Bits:	12
Part Status:	Active
Packaging:	Tray

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AD7864ASZ-1 is a high performance, half-flash analog-to-digital converter (ADC) integrated circuit designed by Analog Devices, Inc. It has been used in data acquisition and control applications in various engineering applications. The AD7864ASZ-1 has a 10-pin package that is suitable for applications where space restrictions are desired.The AD7864ASZ-1 operates in a single-ended or differential mode, providing 16-bit resolution and sampling rates of 40Msps. It offers a wide dynamic range of up to 96dB with a signal-to-noise ratio (SNR) of 78dB. The device is based on a delta-sigma ADC architecture and has an 80MHz conversion clock, allowing it to achieve an impressive high-resolution conversion rate of up to 10Msps. Additionally, the device chip-scale packaging enables easy integration into existing systems.The AD7864ASZ-1 is designed to have excellent accuracy and linearity over a wide range of signal levels. It also offers excellent immunity to power supply transients, as well as signal pick-up, which make it suitable for a wide variety of signal processing applications. The device has integrated power saving technology, allowing it to achieve a total power dissipation of less than 5mW in its operating state.The AD7864ASZ-1 has several features to reduce power consumption, including an asynchronous pipeline clock, two-wire communications protocol, auto power mode control and a low voltage threshold detector. In addition, it also has an onboard lookup table to perform gain and offset compensation for the output data, which helps reduce the complexity of the system design.The AD7864ASZ-1 supports both single-ended and differential operation. It controls the input multiplexer and can process both absolute or differential input signals. The device allows the user to adjust the resolution, sampling rate and the input multiplexer switching frequency directly, without the need of dedicated pins.The internal architecture of the AD7864ASZ-1 consists of a delta-sigma modulator with a high speed second-order loop filter, followed by a low-pass filter. The signals are then converted to a digital value and passed through an internal look-up table to perform gain and offset compensation. The output digital data is then converted to a parallel digital output, which can be used as is or can be processed as required in user systems.The AD7864ASZ-1 is a versatile analog-to-digital converter, suitable for a wide range of applications in both traditional and modern instrumentation and data acquisition systems. Its low-voltage and low-power features, coupled with its excellent accuracy and linearity, make it an ideal choice for low-end applications. In addition, its built-in features, such as the asynchronous pipeline clock and two-way communication protocol, can save resources and simplify the design of the required system.

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