ADS7039-Q1

The ADS7039-Q1 is a high-precision, 12-bit, successive-approximation register (SAR) analog-to-digital converter (ADC) designed for automotive and industrial applications. It features a sampling rate of up to 500 kSPS, enabling fast and accurate signal conversion in demanding environments. The device supports a single-supply operation from 2.7 V to 5.5 V, making it compatible with a wide range of power systems. Its low power consumption, typically less than 4 mW at 500 kSPS, ensures efficient performance in battery-powered or energy-sensitive designs. This ADC includes an internal voltage reference and a precision track-and-hold amplifier, which enhances accuracy and reduces external component count. It offers excellent linearity with a typical integral nonlinearity (INL) of ±0.5 LSB and differential nonlinearity (DNL) of ±0.2 LSB, ensuring reliable data acquisition across the full input range. The ADS7039-Q1 also provides a built-in self-test function that verifies internal circuitry integrity, improving system reliability and reducing diagnostic overhead. The device supports both serial interface modes—SPI-compatible 3-wire and 4-wire protocols—allowing flexible integration into microcontroller-based systems. It includes a programmable gain amplifier (PGA) with selectable gains of 1, 2, 4, or 8, enabling direct measurement of small differential signals without requiring external amplification. This feature is particularly useful in sensor interfaces such as strain gauges, thermocouples, and pressure sensors. Designed for robust operation in harsh conditions, the ADS7039-Q1 meets AEC-Q100 Grade 1 requirements, making it suitable for automotive applications including engine control units, body electronics, and ADAS systems. It operates over an extended temperature range from –40°C to +125°C, ensuring stable performance in extreme environments. The package is available in a compact 8-pin SOIC format, minimizing board space while maintaining thermal and electrical efficiency. Its integrated features—such as low noise, high-speed conversion, and on-chip calibration—reduce design complexity and improve system accuracy. The ADS7039-Q1 is ideal for applications requiring precise analog signal digitization in safety-critical and high-reliability environments, offering a balance of performance, power efficiency, and ease of implementation.