The AD7948BRSZ is a high-performance, 14-bit analog-to-digital converter (ADC) from Analog Devices Inc., featuring a PulSAR architecture that is optimized for low power consumption and high speed. This ADC is capable of sampling rates up to 2 megasamples per second (MSPS) and is packaged in a compact, 20-lead LFCSP/QFN surface-mount package, making it an ideal choice for space-constrained applications.

Key Features:

• Resolution: 14 bits with no missing codes
• Sample Rate: Up to 2 MSPS
• Input Type: Pseudo-differential input range with a 2 V reference
• Interface: Serial interface compatible with SPI, QSPI™, MICROWIRE™, and DSP interface standards
• Package: 20-lead LFCSP/QFN (4 mm × 4 mm)
• Power Consumption: Low power operation with 7.5 mW at 2 MSPS
• Power Supply: Single 2.5 V supply operation

Applications:

The AD7948BRSZ is designed for high-speed data acquisition systems where space and power efficiency are critical. It is well-suited for a variety of applications, including:

• Battery-powered equipment
• Data acquisition systems
• Medical instruments
• Communication systems
• Imaging systems

Performance:

With its PulSAR architecture, the AD7948BRSZ provides excellent dynamic performance, including a 73.5 dB signal-to-noise ratio (SNR) and 90 dB spurious-free dynamic range (SFDR). This ensures precise measurements and accurate signal representation, which is vital for sensitive applications such as medical imaging and high-precision instrumentation.

Integration and Reliability:

The AD7948BRSZ simplifies design integration with its internal reference and reference buffer. This feature reduces the number of external components required, thereby saving board space and enhancing system reliability. The ADC is also specified over the industrial temperature range of −40°C to +125°C, ensuring consistent performance across a wide range of operating conditions.