**AD7888BRZ: A 12-Bit, 250 kSPS Low Power Sampling ADC for Precision Data Acquisition Systems**

In the realm of precision data acquisition, the selection of an analog-to-digital converter (ADC) is critical, defining the performance boundaries of the entire system. The **AD7888BRZ from Analog Devices** stands out as a high-performance, monolithic ADC designed to deliver exceptional accuracy and efficiency for demanding applications. This device integrates a **12-bit, successive approximation register (SAR) ADC** with a maximum sampling rate of **250 kSPS**, making it a versatile solution for a wide array of precision measurement tasks.

A defining characteristic of the AD7888BRZ is its **remarkably low power consumption**. Operating from a single 2.7 V to 5.25 V supply, it consumes just 1.5 mW typical at 250 kSPS with a 5 V supply, and power-down modes reduce consumption to a mere 1 µW. This feature is paramount for **battery-powered and portable equipment**, where minimizing energy drain is essential for extended operational life. The ADC utilizes a advanced, differential input sample-and-hold architecture that can handle both single-ended and differential input signals, achieving excellent performance with a total harmonic distortion (THD) of -90 dB and a signal-to-noise ratio (SNR) of 72 dB.

The device is engineered for simplicity and robustness in system integration. It features a high-speed, serial interface compatible with SPI®, QSPI™, MICROWIRE™, and DSP standards, reducing the number of microcontroller I/O pins required and simplifying board layout. The **on-chip 2.5 V reference** is a significant advantage, providing a stable and accurate voltage source that simplifies external circuitry and enhances overall system reliability. For applications requiring an external reference, the internal reference can be overridden, offering design flexibility.

The AD7888BRZ is offered in a compact **8-lead SOIC package (BRZ suffix)**, making it suitable for space-constrained applications. Its operating temperature range of -40°C to +85°C ensures stable performance in industrial environments. Key applications include **industrial process control, instrumentation, medical diagnostics, and high-accuracy multichannel data acquisition systems**.

**ICGOOODFIND**: The AD7888BRZ is a superior choice for designers seeking a blend of high speed, 12-bit precision, and ultra-low power consumption. Its integrated reference and flexible serial interface make it an efficient and reliable building block for sophisticated data acquisition systems.

**Keywords**: 12-Bit ADC, Low Power Consumption, 250 kSPS, Serial Interface, Precision Data Acquisition