LTC2287IUP

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The LTC2287-IUP is a high-speed, precision, 16-bit analog to digital converter (ADC). It is the ideal choice for a wide range of applications such as real-time signal processing, audio and video systems, medical imaging, and instrumentation. This article provides an overview of the LTC2287-IUP\'s features, applications, and working principles.

Application Field

The LTC2287-IUP is ideal for applications that require high resolution, high speed and high accuracy. It is capable of acquiring 16-bit data at sample rates up to 25MSPS, making it well suited for applications such as medical imaging, LTE/5G base station receiver testing, and instrumentation. The device also supports a wide range of input signals, ranging from 0 to 5V or -2.5 to +2.5V, and boasts a noise-free performance of SFDR and dynamic range at -90dBc and -127dB, respectively. Additionally, the device supports single-ended, differential, and pseudo-differential input modes, allowing for flexible signal conditioning converter configurations.

Working Principle

The LTC2287-IUP is based on a 3-stage, sigma-delta architecture with a sample-and-hold circuit and a low-noise amplifier (LNA). This architecture results in a high dynamic range and low distortion performance, while the low-noise amplifier (LNA) provides a high SNR and superior common-mode rejection ratio. In operation, the LTC2287-IUP first samples the input signal with the sample-and-hold circuit and applies noise shaping over 2-8 cycles. It then quantizes the result with a 16-bit ADC to determine the output code for the input signal. Finally, the output code is converted to digital form, resulting in a 16-bit output.

The device\'s conversion rate is controlled by an internal clock and can be configured to operate at sampling rates up to 25MSPS. Additionally, the LTC2287-IUP features an internal reference voltage and supports an external reference voltage of up to 5.6V. The device also offers a wide range of features such as offset correction, digital filter engine and power-down mode to reduce power consumption.

Conclusion

The LTC2287-IUP is an ideal choice for a wide range of applications that require high-speed, precision and wide dynamic range. The device can acquire 16-bit data at sample rates up to 25MSPS, with SFDR and dynamic range at -90dBc and -127dB, respectively. Additionally, it supports single-ended, differential, and pseudo-differential input modes, offset correction, digital filter engine for low-noise operation, and power-down mode for reduced power consumption.

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