AD7690BRMZ: A High-Performance 18-Bit SAR ADC for Precision Applications

The AD7690BRMZ is a high-precision, 18-bit, successive approximation register (SAR) analog-to-digital converter (ADC) designed for applications demanding ultra-low noise, high accuracy, and low power consumption. Manufactured by Analog Devices, this 16-lead MSOP-packaged IC is widely used in industrial automation, medical instrumentation, data acquisition systems, and energy monitoring.

Key Features of the AD7690BRMZ

1. Ultra-High Resolution and Accuracy

The AD7690BRMZ delivers 18-bit resolution with no missing codes, ensuring high linearity (±0.5 LSB INL) and low noise performance (91 dB SNR). This makes it ideal for precision measurement systems where signal integrity is critical.

2. Low Power Consumption

With a power dissipation of just 7.5 mW at 500 kSPS, the AD7690BRMZ is optimized for battery-powered and portable devices. Its flexible power-down modes further enhance energy efficiency.

3. Wide Input Range and Flexible Interface

The AD7690BRMZ supports a true differential input range of ±VREF, allowing seamless integration with sensors and transducers. Its SPI-compatible serial interface simplifies communication with microcontrollers and FPGAs.

4. Robust Performance in Harsh Environments

Featuring an extended industrial temperature range (-40°C to +85°C), the AD7690BRMZ is suitable for automotive, aerospace, and industrial control systems. Its high immunity to EMI ensures reliable operation in noisy environments.

Applications of the AD7690BRMZ

- Medical Imaging & Diagnostics – High-resolution data conversion for ECG, EEG, and MRI systems.

- Industrial Automation – Process control, PLCs, and robotics requiring high-speed, low-latency ADCs.

- Energy Monitoring – Smart meters and power analyzers benefit from its low-noise performance.

- Test & Measurement Equipment – Oscilloscopes, spectrum analyzers, and data loggers demand high-precision ADCs.

Why Choose the AD7690BRMZ?

Compared to competing 16-bit and 18-bit ADCs, the AD7690BRMZ offers superior noise performance, lower power consumption, and better linearity. Its small form factor and ease of integration make it a preferred choice for space-constrained designs.

ICgoodFind’s Take

The AD7690BRMZ stands out as a high-performance SAR ADC for engineers seeking precision, efficiency, and reliability. Whether in medical, industrial, or energy applications, this chip delivers exceptional performance without compromise.

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