**LTC2145CUP-14#PBF: A 14-Bit, 125Msps Low Power Dual ADC for High Performance Signal Processing Systems**

In the realm of high-performance signal processing, the ability to accurately capture and digitize analog signals is paramount. The **LTC2145CUP-14#PBF** from Analog Devices stands out as a critical component engineered to meet the demanding requirements of modern communication, medical imaging, and instrumentation systems. This device is a **14-bit, dual-channel analog-to-digital converter (ADC)** capable of sampling at speeds up to **125 Megasamples per second (Msps)**, combining high speed with exceptional precision in a compact, low-power package.

At the core of its design is a commitment to **high dynamic performance and low noise**. The LTC2145CUP-14 delivers outstanding signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR), ensuring that even the most subtle details of the input signal are preserved during conversion. This makes it exceptionally suitable for applications where signal integrity is non-negotiable, such as in software-defined radio (SDR), radar arrays, and high-resolution data acquisition systems. The dual-channel architecture allows for simultaneous sampling of two signals, which is indispensable for I/Q processing in communications or for differential measurement setups, thereby enhancing system throughput and complexity without sacrificing board space.

A defining feature of this ADC is its remarkably **low power consumption**. Operating from a single 1.8V supply, each channel consumes just 72mW at 125Msps, a critical advantage for portable, battery-operated, or densely populated systems where thermal management and power efficiency are significant concerns. This efficiency does not come at the expense of functionality; the device includes integrated digital processing features such as **programmable output data formatting and optional digital gain**, providing designers with greater flexibility in system integration.

The device is housed in a **64-lead QFN (Quad Flat No-Leads) package**, which offers excellent thermal performance and helps minimize parasitic inductance, contributing to the converter's robust operation at high speeds. Furthermore, it includes a dedicated clock input circuit that is designed to handle low-jitter clock signals, which is essential for maintaining the high SNR performance at the maximum sample rate.

For system architects, the LTC2145CUP-14#PBF simplifies the design-in process. It supports a wide input bandwidth and can be driven directly from a variety of signal sources, reducing the need for extensive external driver circuitry. Its serial LVDS (Low-Voltage Differential Signaling) outputs help to minimize noise coupling and reduce the number of interface lines, streamlining the data path to FPGAs or ASICs.

ICGOOODFIND: The LTC2145CUP-14#PBF is a superior choice for engineers designing next-generation signal processing systems. It masterfully balances **high speed, exceptional resolution, and low power dissipation** in a dual-channel configuration, making it a versatile and powerful solution for a wide array of high-performance applications.

**Keywords:**

**14-Bit Resolution**

**125Msps Sampling Rate**

**Low Power Consumption**

**Dual ADC Channels**

**High Dynamic Performance**