AD9689 Replacement: GX14D2600 Fully Hardware and Software Compatible RF ADC
GX14D2600 is a dual-channel, 14-bit, 2.6 GSPS ADC developed as a direct replacement for AD9689. It integrates two high-performance ADC cores, input buffers and sample-and-hold circuits for direct sampling of wideband signals up to 5 GHz.
The device supports differential inputs, JESD204B Subclass 1 outputs, multi-device synchronization and 3-wire SPI control. Existing AD9689 designs can migrate to GX14D2600 without modifications to the schematic, PCB, FPGA interface or control software.
GX14D2600 for AD9689 Replacement and New RF Designs
GX14D2600 provides a direct migration path for products using the 2.6 GSPS version of AD9689. Pin-to-pin compatibility allows the original FC-PBGA196 footprint and peripheral circuits to remain unchanged.
Its 6 GHz analog input bandwidth and 2.6 GSPS sampling rate also make it suitable for new broadband communication receivers, direct RF-sampling systems, radar and test equipment.
Pin-to-Pin Hardware and Software Compatibility with AD9689
GX14D2600 is hardware compatible with AD9689, including the device pinout, supply rails, differential analog and clock inputs, JESD204B outputs, synchronization signals and FC-PBGA196 package footprint.
It is also software and interface compatible with AD9689-based systems. Existing SPI configuration, JESD204B link settings, SYSREF/SYNCINB synchronization architecture and FPGA receive logic can be retained when migrating to GX14D2600.
This compatibility allows AD9689 to be replaced without changing the original schematic, PCB, FPGA interface or software architecture.
GX14D2600 vs AD9689: Key Specification Comparison
|
Specification |
AD9689 |
GX14D2600 |
|
Resolution |
14-bit |
14-bit |
|
ADC Channels |
2 |
2 |
|
Maximum Sampling Rate |
2.6 GSPS |
2.6 GSPS |
|
Direct RF Sampling |
Up to approximately 5 GHz |
Up to 5 GHz |
|
−3 dB Analog Input Bandwidth |
9 GHz |
6 GHz |
|
Input Type |
Differential |
Differential |
|
Supply Voltages |
0.975 V / 1.9 V / 2.5 V |
0.975 V / 1.9 V / 2.5 V |
|
Data Output Interface |
JESD204B Subclass 1 |
JESD204B Subclass 1 |
|
JESD204B Lane Configurations |
1 / 2 / 4 / 8 |
1 / 2 / 4 / 8 |
|
Multi-Device Synchronization |
SYSREF / SYNCINB |
SYSREF / SYNCINB |
|
Programmable Threshold Detection |
Supported |
Supported |
|
Signal Monitoring |
Supported |
Supported |
|
Control Interface |
3-Wire SPI |
3-Wire SPI |
|
Power-Down Modes |
Supported |
Supported |
|
Operating Temperature |
−40°C to +85°C |
−55°C to +105°C |
|
Package |
196-Ball BGA, 12 mm × 12 mm |
FC-PBGA196, 12 mm × 12 mm |
|
Ball Pitch |
0.8 mm |
0.8 mm |
|
Pin-to-Pin Hardware Compatible |
— |
Yes |
|
Schematic Modification Required |
— |
No |
|
PCB Redesign Required |
— |
No |
|
FPGA Interface Modification Required |
— |
No |
|
Software Modification Required |
— |
No |
GX14D2600 retains the principal sampling, JESD204B, synchronization and control architecture required by AD9689-based systems while providing a wider specified operating-temperature range.
Wideband Sampling Performance and Applications
GX14D2600 uses a multistage differential pipelined architecture with integrated error-correction logic. Its programmable threshold detector, fast-detect output and signal-monitoring functions simplify automatic gain control in communication receivers.
Key GX14D2600 specifications include:
l Two 14-bit ADC channels
l Sampling rate up to 2.6 GSPS
l Direct sampling of signals up to 5 GHz
l 6 GHz analog input bandwidth
l Differential analog and clock inputs
l JESD204B Subclass 1 serial outputs
l One-, two-, four- and eight-lane configurations
l SYSREF and SYNCINB synchronization
l 3-wire SPI programming
l Flexible power-down modes
l FC-PBGA196 package
GX14D2600 is suitable for multiband digital receivers, wireless infrastructure, direct RF-sampling systems, phased-array radar, electronic systems, broadband test equipment and high-speed data acquisition.
Technical Support for Direct Replacement
GXSC can provide samples, schematic review, compatibility verification, JESD204B link support and RF performance testing to help customers replace AD9689 while retaining the existing PCB, FPGA interface and software architecture.
Request GX14D2600 Datasheet and Samples
Contact GXSC to request the GX14D2600 datasheet, samples, quotation or technical support for your AD9689 replacement or new direct RF-sampling project.
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