High-Speed Analog-to-Digital Converter GX9689 Replaces AD9689 in Electronic Test and Measurement Systems

Electronic testing and measurement systems are a series of tools and techniques used to measure, analyze, and verify the performance of electronic devices. These systems can accurately capture, record, and analyze dynamic signals of electrical parameters (such as voltage, current, power, etc.) and physical phenomena. They play a crucial role in modern electronic technology, ensuring the reliability and performance of electronic devices. With the advancement of artificial intelligence and the Internet of Things, future testing systems will become more intelligent, capable of automatically identifying test objects and selecting appropriate testing methods.

Electronic testing and measurement systems can measure minute electrical changes with extremely high precision, meeting the stringent accuracy requirements of modern electronic technology. These systems typically integrate multiple measurement functions, enabling simultaneous measurement of various physical quantities to adapt to diverse testing needs. The analog-to-digital converter (ADC) is a key component of the system, and its performance directly impacts the system‘s accuracy, speed, and reliability. The GX9689 ADC is specifically developed for testing and measurement systems. It incorporates two independent high-performance ADC cores and features an on-chip buffer, supporting direct sampling of up to 5GHz bandwidth in wide analog signal communication applications.

The GX9689 features advantages such as high input bandwidth, high sampling rate, excellent linearity, compact packaging, and low power consumption. Its dual-channel ADC core adopts a multi-stage pipeline architecture and integrates on-chip digital calibration algorithms. Each ADC boasts broadband input capabilities, supports various user-selectable input ranges, and incorporates an integrated reference voltage source to simplify design complexity. Both analog input and clock signals are differential inputs.

The GX9689 also features several functions to simplify the automatic gain control (AGC) of communication receivers. A programmable threshold detector allows monitoring of incoming signal power using the fast detection control bit in the ADC register. In addition to the fast detection output, the GX9689 provides signal monitoring capabilities. The signal monitoring module delivers additional information about the signal digitized by the ADC. Users can configure the JESD204B subclass 1 high-speed serial output in various channel modes, including single-channel, dual-channel, quad-channel, and octal-channel modes, based on data configuration and the acceptable channel data rate of the receiving logic device. The ADC supports multi-device synchronization via the SYSREF+ and SYNCINB± input pins.

Advantages of the GX9689 Product

Packaging dimensions are compatible with the reference model, supporting functional replacement for the AD9689

The power consumption is approximately 60% of the reference chip, effectively reducing the overall power consumption of the system solution

Wide operating temperature range with robust performance within the operational limits

Small form factor, effectively reducing system volume

High integration, incorporating digital downconversion and filtering, helps reduce system costs

204B high-speed interface, facilitating user layout and wiring

In terms of power consumption, the GX9689 features flexible power-down modes that support various low-power operation modes. All these functions can be programmed using a 3-wire serial port interface (SPI).