**LTC1865HMS#PBF: A 16-Bit, 250ksps, Single-Channel SAR ADC with Serial Interface and Low Power Consumption**

In the realm of high-precision data acquisition, the **LTC1865HMS#PBF** from Analog Devices stands out as a premier solution for applications demanding uncompromising accuracy and efficiency. This integrated circuit is a **16-bit, single-channel successive approximation register (SAR) analog-to-digital converter (ADC)** capable of sampling rates up to **250k samples per second (ksps)**. Its architecture is meticulously designed to deliver exceptional performance while maintaining remarkably low power consumption, making it an ideal choice for portable instrumentation, industrial sensing, and battery-powered systems.

The core of the LTC1865HMS#PBF's performance lies in its **high-accuracy 16-bit resolution**, which ensures minimal quantization error and provides a wide dynamic range for capturing subtle signal variations. This is complemented by its impressive **250ksps sampling rate**, enabling the precise digitization of fast-changing analog signals. The ADC operates from a single 5V supply, and its internal sample-and-hold circuit is designed for a wide input bandwidth, supporting a unipolar input range of 0V to VREF.

A key feature of this ADC is its **simple and robust 3-wire serial interface**. Compatible with SPI and MICROWIRE protocols, this interface facilitates easy communication with microcontrollers, DSPs, and FPGAs. The serial data output streamlines board layout and reduces the number of required I/O pins, simplifying system design and integration.

Perhaps one of its most critical advantages is its **ultra-low power consumption**. The device draws a mere 850µA during conversion and automatically enters a low-power shutdown mode between conversions, reducing the supply current to just 1nA. This **dramatic reduction in power** makes it exceptionally suitable for applications where energy efficiency is paramount, significantly extending battery life in portable devices.

Housed in a compact **MSOP-10 package**, the LTC1865HMS#PBF is also engineered for high performance in challenging environments. It features excellent DC specifications, including low integral and differential non-linearity (INL/DNL), and is specified over the industrial temperature range.

**ICGOODFIND**: The LTC1865HMS#PBF is a top-tier, high-resolution ADC that masterfully balances speed, precision, and power efficiency. Its straightforward serial interface and miniature package make it an exceptionally versatile and reliable choice for designers tackling space-constrained and power-sensitive high-accuracy measurement challenges.

**Keywords**: 16-Bit ADC, Low Power Consumption, 250ksps, Serial Interface (SPI), SAR ADC.