AD9238BST-20

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The AD9238BST-20 is a high-speed, dual interleaved, analog-to-digital converter (ADC) capable of converting up to 40Msps. It consists of two dual-channel, interleaved ADCs with low power consumption, excellent dynamic performance and outstanding value. This makes it ideal for use in applications such as radar, automotive, communications and medical.

In these applications its high speed enables acquisition of digital signals from rapidly changing analog signals more accurately. With the AD9238BST-20’s power efficiency, its low cost and small size make it a great choice for bringing digital signal processing capabilities to cost-sensitive applications.

Application Field

The AD9238BST-20 is suitable for a variety of applications, including test and measurement, communications, industrial control, medical imaging and automotive. Its dual interleaved architecture allows for fast data acquisition and delivers high-performance in terms of dynamic range, linearity, noise and spurious-free dynamic range (SFDR).

The AD9238BST-20 also offers excellent signal-to-noise ratio (SNR) along with low power consumption and small size, making it an ideal solution for a variety of signal processing applications.

Working Principle

The AD9238BST-20 features a dual-interleaved architecture which improves indexing and throughput performance. This architecture divides the signal chain into two lanes, each containing two ADCs. The ADCs in each lane are triggered simultaneously, resulting in a higher throughput rate. The interleaving also improves SNR performance by increasing the effective number of bits.

In addition, the AD9238BST-20 contains a configurable front end that supports input frequencies of up to 50MHz. The front end amplifier helps to reduce noise and distortion for improved dynamic performance. The device also implements an internal linearizing feature which increases dynamic performance, allowing the user to maximize linearity and obtain the best analog to digital conversion results.

The AD9238BST-20 also offers an optional differential analog input structure for improved noise rejection and crosstalk prevention. An integrated sample-and-hold circuit improves accuracy, eliminating external hardware and delivering improved performance.

The AD9238BST-20 is capable of low-power operation with excellent thermal performance and a variety of output data formats. This makes the device suitable for a range of applications that require high speed and low power, including those with challenging power consumption requirements.

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