TI Unveils SAR ADC for Industrial Systems
Supports precise data collection for industrial systems
65% reduction in power consumption with high-speed digital control loop


With the increase in data-driven operations in industrial systems, rapid decision-making is required to prevent system defects. Consequently, the demand for fast and accurate data collection has grown.

On the 10th, Texas Instruments (TI) expanded its high-speed data converter product portfolio into the field of Successive Approximation Register (SAR) ADCs, enabling precise data acquisition in industrial designs. The 'ADC3660' family provides a wide dynamic range with low power consumption and consists of eight products with 14, 16, and 18-bit resolutions and sampling rates of 10 to 125 Msps.

The ADC3660 family meets the real-time control requirements of industrial systems with enhanced high-speed data acquisition precision. In particular, it can rapidly respond to dynamically changing voltages or currents in high-speed digital control loops, preventing damage to critical components caused by power management systems. Additionally, it offers up to 80% shorter latency than comparable devices. Consequently, it enables high-speed digital control loops in various industrial systems to accurately monitor and quickly respond to voltage/current spikes. This allows for increased equipment precision in applications such as semiconductor manufacturing systems.

◇ Achieves both low power consumption and noise prevention performance

Previously, industrial system designers had to choose between superior noise isolation performance and low power consumption. This was a particularly significant issue when designing battery-powered devices that require precise data acquisition. The new TI SAR ADC family eliminates the need for such compromises.

The 'ADC3683' 65Msps 18-bit SAR ADC achieves a signal-to-noise ratio (SNR) of 84.2dB and a noise spectral density of -160dBFS/Hz, with low power consumption of 94mW per channel. The 10Msps 14-bit 'ADC3541', consuming a total of 36mW, simplifies thermal management for power-sensitive applications and extends battery life. The 'ADC3660' 65Msps 16-bit SAR ADC achieves an 82dBFS SNR to increase image resolution for sonar applications and consumes 71mW per channel, which is 65% less than competing products.

◇ Design simplification through functional integration and high sampling frequency

The ADC3660 family reduces the number of components required by the system through high sampling rates and feature integration. The ADC3683 enables oversampling with twice the channel density and four times faster sampling compared to equivalent 18-bit products. Consequently, designers can reduce the complexity of anti-aliasing filters and cut the number of system components by up to 75%.

In addition, the on-chip decimation function easily removes unwanted noise and harmonics from the system and increases the SNR and spurious-free dynamic range (SFDR) by up to 15dB. It also provides a CMOS interface, allowing it to be used with Arm-based processors or digital signal processors instead of FPGAs, thereby reducing system costs.

The ADC3563, ADC3583, ADC3643, ADC3660, ADC3663, ADC3664, and ADC3683 products are available in 5×5mm WQFN packages. The pre-production evaluation module version of the ADC3541 is currently available for purchase on TI.com, with mass production scheduled to begin in the first quarter of 2022. The price is $249 per 1,000 units, and various payment methods and shipping options are available.