LTC2273CUJ#PBF

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The LTC2273CUJ#PBF is a low noise, low power, monolithic CMOS 12-bit A/D converter, designed for a wide variety of data acquisition applications. It features a low power CMOS design, excellent accuracy and a wide bandwidth, making it ideal for digitizing high-speed, low-level signals.

The LTC2273CUJ#PBF features a modulation-level, low-noise data acquisition architecture combined with a 12-bit ADC, making it suitable for use in a variety of data acquisition applications including medical instrumentation, test and instrumentation, industrial monitoring and control, and audio/video. The device has an input voltage range of 0 V to 5 V, a low-pass filtering option, an over-voltage/under-voltage protection feature, and slew-rate control so it can handle high-frequency signals. It also has an internal voltage reference and an orthogonal architecture.

At the core of the LTC2273CUJ#PBF is a low noise CMOS sampling structure, which allows it to acquire low-noise signals. The device has a low input impedance (100 kΩ) and a high settling accuracy (max 3-2V). It has a low power CMOS design, a low noise figure of approx. 7 mV, and a noise-rejecting filter for exceeding the resolution of its ADC. The device also features a wide dynamic range of 0V to 5V that combines excellent linearity and accuracy.

The working principle of the LTC2273CUJ#PBF is to convert the analog input signal to a 12-bit digital stream using a single conversion cycle. In this process, an internal voltage reference is used to sense the input voltage and reference it for the conversion. Differential pairs of switches are used to sample the input voltage, enabling the device to acquire a wide range of input voltage levels. Additionally, an offset null circuit is used to zero out any common mode noise present at the input.

The LTC2273CUJ#PBF is further equipped with certain unique features that make it suitable for data acquisition applications. It has an internal 4x over-voltage/under-voltage protection circuit to protect against voltage excursions. Additionally, an on-chip slew-rate control feature is included so that the device can be used to accurately digitize high-frequency signals. A selectable low-pass filter is available to remove unwanted noise from the input signal.

Overall, the LTC2273CUJ#PBF is a low noise, low power and monolithic CMOS 12-bit A/D converter designed for a variety of data acquisition applications. It features a low power CMOS design, excellent accuracy and a wide bandwidth, making it ideal for digitizing high-speed and low-level signals. Additionally, its internal voltage reference and orthogonal architecture make it suitable for use in a variety of digital data acquisition applications.

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