LTC2245IUH is a 14-bit, 10Msps low-power 3V A/D converter from Analog Devices

Core Function Overview

• High - Performance Digitization: It achieves 14 - bit resolution and a 10Msps sampling rate, equipped with a 575MHz full - power bandwidth sample - and - hold amplifier to digitize high - frequency signals beyond the Nyquist frequencyAnalog Devices. Its typical AC performance includes 74.4dB SNR and 90dB SFDR, with DC specs like ±1LSB INL, ±0.5LSB DNL, no missing codes over temperature, and 1LSB_RMS transition noiseAnalog Devices.
• Low - Power & Flexible Power Supply: It operates on a single 3V supply, consuming only 60mW (typical). A separate output supply enables it to drive logic levels ranging from 0.5V to 3.6V, facilitating seamless integration with diverse logic familiesAnalog Devices.
• Clock & Control Flexibility: A single - ended CLK input manages converter operation. An optional clock duty cycle stabilizer ensures top - notch performance at full speed even when the clock duty cycle varies widelyAnalog Devices. Shutdown and nap modes are available to further reduce power consumption when the device is idle.
• Output & Packaging: It offers parallel outputs with offset binary or two's complement coding. The device comes in a 32 - pin 5mm×5mm QFN package, which is pin - compatible with other LTC22xx family members, allowing for easy migration across different speeds and resolutionsAnalog Devices.

Key Applications

1. Wireless & Wired Broadband Communication: It is suitable for radio transceivers, base stations, and cable modems. It can digitize intermediate - frequency (IF) signals with a wide dynamic range, maintaining high SFDR and SNR to ensure the quality of signal reception and transmissionAnalog Devices.
2. Imaging Systems: It is applicable to medical imaging (such as ultrasound), industrial inspection cameras, and scientific imaging equipment. It can accurately digitize analog video or sensor signals, preserving fine details and ensuring image qualityAnalog Devices.
3. Spectral Analysis: It can be used in spectrum analyzers, signal monitoring gear, and test instruments. It provides high - resolution digitization of RF/IF signals, supporting precise frequency domain analysis and signal characterizationAnalog Devices.
4. Portable Instrumentation: It is ideal for battery - powered test equipment, handheld oscilloscopes, and field sensors. Its low power consumption (60mW typical) and 3V operation extend battery life, while its small QFN package helps minimize the size of the instrument.

Typical Operating Configuration

1. Power Supply: Connect VDD to 3V (2.7V - 3.4V range) and VOUT to the logic voltage (0.5V - 3.6V)Analog Devices.
2. Clock Input: Apply a single - ended clock (CLK) within the 10Msps rate, and enable the duty cycle stabilizer (DCS) if there are fluctuations in the clock duty cycleAnalog Devices.
3. Analog Input: Set the input range between 1V and 1.9V (differential or single - ended), and match the impedance to minimize signal reflections.
4. Output Interface: Select the output coding (offset binary/two's complement) and connect the parallel outputs to the logic circuitry, ensuring proper timing with the output enable (OE) signal.