AD9689 Replacement Model: GX9689 Dual-Channel 14-Bit 2.6GSPS High-Speed Analog-to-Digital Converter, Pin-Compatible

Introduction: GXSC‘s dual-channel 14-bit 2.6GSPS high-speed analog-to-digital converter is a pin-, hardware-, and software-compatible replacement for the AD9694. The GX9689 ADC integrates two independent high-performance ADC cores. It samples wide-bandwidth analog signals up to 5GHz, and each ADC has a wide-bandwidth input supporting various user-selectable input ranges. It features a JESD204B high-speed interface and is packaged in a plastic FCBGA196. The ambient temperature range is -55°C to +105°C.

The GX9689 dual-channel 14-bit 2.6GSPS ADC is a replacement for the AD9689:
This GX9689 dual-channel, 14-bit, 2.6GSPS ADC integrates two independent high-performance ADC cores. The device includes on-chip buffers and supports direct sampling of wideband analog signals up to 5GHz. Architecturally, it adopts a multi-stage pipeline structure and integrates on-chip digital correction algorithms, ensuring excellent linearity. It offers large input bandwidth and a high sampling rate, and each ADC has a wide input range, allowing users to flexibly select according to actual needs. In addition, the integrated reference voltage source greatly simplifies the peripheral analog input and clock differential input circuits, reducing design complexity.

Pin, hardware, and software compatibility with the AD9689:
The GX9689 dual-channel 14-bit 2.6GSPS ADC is a pin-, hardware-, and software-compatible replacement model. The device provides a 196-pin plastic FCBGA package, two analog input channels, and eight JESD204B paired output channels.
The GX9689 ADC is powered by 0.975V, 1.9V, and 2.5V DC supplies, and also integrates an on-chip temperature diode that can be used for system thermal management to detect the heat generated by the main chip on the board. The table below lists the common architecture and respective electrical specifications of the two devices.

Comparison of architecture and main specifications between GX9694 and AD9694:

Specification | AD9689 | GX9689
Resolution | 14 bits | 14 bits
Number of channels | 2 | 2
Sampling rate | 2.6G SPS | 2.6G SPS
Conversion architecture | Differential pipeline | Differential pipeline
Analog input | Differential | Differential
Typical full-power bandwidth | 6GHz | 6GHz
Power supply | 0.975V / 1.8V / 2.5V | 0.975V / 1.8V / 2.5V
Data interface | JESD204B | JESD204B
Integrated DDC | 4 | 4
Control interface | SPI | SPI
Package | FCBGA196 | BGA196
Temperature range | −40°C to +105°C | −55°C to +105°C

Based on the information in the table, the GX9689 ADC package dimensions are fully compatible with the reference model (AD9689), requiring no modification to the existing PCB design and shortening the product time-to-market. The chip integrates a digital down-converter (DDC) and filters, significantly reducing the number of peripheral components and further compressing BOM cost and PCB area. The GX9689 ADC supports an ultra-wide operating temperature range of -55°C to +105°C, making it widely suitable for industrial control, aerospace, and military equipment.

The GX9689 ADC is suitable for multi-frequency/multi-mode digital receivers, electronic test and measurement systems, phased-array systems, high-speed test instruments, broadband radar, 3G/4G digital communications, and other fields.

Requesting datasheets, samples, and technical support for the GX9689 ADC:
Contact GXSC to obtain datasheets, samples, quotations, and technical support for AD9689 replacement projects or brand-new high-speed acquisition designs. GXSC requires the AD9689 ordering model, analog input frequency, clock rate, and DDC mode to help GXSC provide support tailored to the target system.

Q1: Which device can replace the AD9689?
A: GXSC‘s GX9689 is a pin-compatible replacement for the AD9689—a pin-, hardware-, and software-compatible replacement model offered in a 196-pin plastic FCBGA package.

Q2: Is there a replacement model that is pin-, hardware-, and software-compatible with the AD9689?
A: GXSC positions the GX9689 as a pin-, hardware-, and software-compatible replacement for the AD9689. The package dimensions are fully compatible with the reference model (AD9689), requiring no modification to the existing PCB design.

Q3: Where can I request samples of the AD9689 replacement?
A: Contact GXSC to request GX9689 samples, quotations, and technical support for AD9689 replacement projects. Providing the required quantity, price, and pin configuration will help GXSC provide support tailored to the target system.

Q4: What is the typical lead time for the GX25C20?
A: As a domestic chip solution provider, GXSC emphasizes stable supply capability. It is recommended to confirm the current schedule with sales when requesting a quotation; for projects requiring long-term stable supply, stocking plans can be discussed in advance. Compared with the import lead-time fluctuations that original manufacturers may face, domestic supply usually has an advantage in response speed.

Q5: Are there already mature customers using the GX25C20 to replace the AD9689?
A: GXSC‘s official website explicitly positions the GX9689 as a "Pin-to-Pin replacement solution for the AD9689" and lists the replacement conditions and verification process in detail, indicating that the product has completed engineering preparation for replacement scenarios. For reference data in specific industries, contact the GXSC technical team.