ADS4449 Replacement: GX14Q250 Fully Hardware and Software Compatible Quad ADC
GX14Q250 is a high-linearity, four-channel, 14-bit, 250 MSPS ADC developed as a direct replacement for ADS4449. Each channel uses a multistage differential pipelined architecture with integrated output error correction.
The device supports differential inputs, DDR LVDS outputs, 1.8 V and 3.3 V supply rails and 4-wire SPI configuration. Existing ADS4449 designs can migrate to GX14Q250 without modifying the original schematic, PCB, FPGA data-capture logic or control software.
GX14Q250 for ADS4449 Replacement and New Designs
GX14Q250 provides a direct migration path for products currently using ADS4449. Pin-to-Pin compatibility allows the original BGA144 footprint and peripheral circuits to remain unchanged.
For new designs, its four synchronized 250 MSPS ADC channels provide a compact solution for wireless communication, radar and high-speed multichannel data acquisition.
Pin-to-Pin Hardware and Software Compatibility with ADS4449
GX14Q250 is hardware compatible with ADS4449, including the device pinout, supply rails, differential analog inputs, sampling-clock interface, multiplexed DDR LVDS outputs and BGA144 package footprint.
It is also software and interface compatible with ADS4449-based systems. Existing 4-wire SPI configuration, output formatting, DDR LVDS timing and FPGA capture logic can be retained when migrating to GX14Q250.
This compatibility allows ADS4449 to be replaced without changing the original schematic, PCB, FPGA interface or software architecture.
GX14Q250 vs ADS4449: Key Specification Comparison
|
Specification |
ADS4449 |
GX14Q250 |
|
Resolution |
14-bit |
14-bit |
|
ADC Channels |
4 |
4 |
|
Maximum Sampling Rate |
250 MSPS |
250 MSPS |
|
Input Type |
Differential |
Differential |
|
Supply Rails |
1.8 V / 3.3 V |
1.8 V / 3.3 V |
|
Data Output Interface |
DDR LVDS |
DDR LVDS |
|
Output Architecture |
Channel pairs share output pins |
Channel pairs share output pins |
|
Channel Pairing |
A/B and C/D |
A/B and C/D |
|
LVDS Output Pairs |
14 pairs per channel pair |
14 pairs per channel pair |
|
ADC Architecture |
Differential Pipeline |
Multistage Differential Pipeline |
|
Control Interface |
Serial SPI |
4-Wire SPI |
|
Power-Down Mode |
Supported |
Supported |
|
Operating Temperature |
−40°C to +85°C |
−55°C to +125°C |
|
Package |
144-Terminal NFBGA |
BGA144 |
|
Pin-to-Pin Hardware Compatible |
— |
Yes |
|
Schematic Modification Required |
— |
No |
|
PCB Redesign Required |
— |
No |
|
FPGA Interface Modification Required |
— |
No |
|
Software Modification Required |
— |
No |
GX14Q250 retains the resolution, sampling rate, shared DDR LVDS output architecture and control functions required by ADS4449-based systems while providing a wider operating-temperature range.
High-Linearity Conversion and Applications
GX14Q250 integrates duty-cycle correction to stabilize the internal sampling clock and maintain conversion performance. Flexible power-down control also helps reduce consumption when all channels are not required.
Key GX14Q250 specifications include:
l Four 14-bit ADC channels
l Sampling rate up to 250 MSPS
l Differential analog inputs
l DDR LVDS data output
l Shared A/B and C/D output architecture
l 14 LVDS differential pairs per channel pair
l 1.8 V and 3.3 V supply rails
l 4-wire SPI configuration
l Flexible power-down modes
l −55°C to +125°C operation
l BGA144 package
GX14Q250 is suitable for multicarrier cellular base stations, wireless infrastructure, radar, smart and active antenna arrays, communication test equipment, multichannel IF acquisition and high-speed data-acquisition systems.
Technical Support for Direct Replacement
GXSC can provide samples, schematic review, compatibility verification, DDR LVDS interface support and FPGA data-capture testing to help customers replace ADS4449 while retaining the existing PCB and software architecture.
Request GX14Q250 Datasheet and Samples
Contact GXSC to request the GX14Q250 datasheet, samples, quotation or technical support for your ADS4449 replacement or new high-speed ADC project.
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