The GXSC analog-to-digital converter, benchmarked against the AD7608, is applied in industrial multiphase motor control

In the modern industrial automation process, multiphase motors are widely used in various complex and critical industrial scenarios. For instance, in heavy machinery equipment in large factories and automated production lines for precision manufacturing, the stable operation and efficient control of multiphase motors ensure smooth industrial production, enhance production efficiency, and improve product quality. The precise control of multiphase motors fully leverages their performance advantages, involving accurate regulation of motor speed, torque, and position, while also addressing various complex operating conditions and interference factors during motor operation.

The analog-to-digital converter (ADC) in multiphase motor control converts analog signals during motor operation into digital signals, providing precise data support for digital signal processing and control algorithms, thereby enabling efficient and accurate control of multiphase motors. The GXSC ADC is specifically designed for motor control, with performance fully equivalent to the imported product AD7608, supporting pin-to-pin in-place replacement.

The GXSC analog-to-digital converter features a conversion rate of up to 200 kSPS per channel ADC, enabling multiphase motors to rapidly sample these dynamic signals and provide real-time data feedback to the control system. The device operates on a single 5V power supply and supports true bipolar input signals of ±10V and ±5V. With built-in calibration algorithms, the GXSC ADC not only achieves ADC performance equivalent to imported reference products but also delivers a bipolar zero-level error as low as +4LSB and channel isolation exceeding -100dB.

The GXSC analog-to-digital converter features an input buffer with 1MΩ input impedance and an anti-aliasing filter for direct analog signal acquisition. It also integrates a flexibly configurable high-precision reference voltage generator and buffer, simplifying PCB design for data acquisition systems and making it highly suitable for industrial applications.

The chip supports both parallel and serial modes, configured via different hardware pin connection schemes. This feature creates multiple interface connection conditions for devices with microprocessors or DSPs.

Product advantages:

The product dimensions, pinout, functionality, and timing support pin-to-pin in-place replacement of the AD7608

Single 5V power supply

Lower bipolar zero-level error, lower positive and negative full-scale error

Higher channel isolation

ENOB: 14.6 bits (typical value)

SNR: 90.9dB (typical value)

SINAD: 89 dB (typical value)

SFDR: -105dB (typical)

INL: ±2.5LSB (typical)

DNL: ±0.75LSB (typical)

Operating power consumption: 120mW (internal reference)

Operating temperature: -55°C to +125°C