AD7608 Replacement: GX6608 Fully Hardware and Software Compatible 18-Bit ADC
GX6608 is designed for industrial measurement, power monitoring and multichannel data acquisition systems requiring high resolution and simultaneous sampling.
The device operates from a single 5 V supply and supports selectable ±10 V and ±5 V true bipolar input ranges. Its integrated 1 MΩ input buffers, second-order antialiasing filters and precision reference circuitry simplify analog front-end and PCB design.
GX6608 as a Direct AD7608 Replacement
GX6608 provides eight single-ended analog input channels with simultaneous sampling and 18-bit resolution. Each channel supports conversion rates of up to 200 kSPS, allowing eight signals to be captured at the same sampling instant.
For existing AD7608-based products, the compatible LQFP-64 package, pin configuration, analog input architecture and digital interfaces support direct board-level replacement. The original schematic, PCB and system architecture can be retained.
GX6608 is also suitable for new designs requiring multichannel bipolar signal acquisition, high input impedance and flexible processor connectivity.
Pin-to-Pin Hardware and Software Compatibility
GX6608 provides pin-to-pin hardware compatibility with AD7608. Existing LQFP-64 footprints, analog input connections, power architecture, control signals and digital data interfaces can continue to be used.
Parallel and SPI-compatible serial operating modes can be selected through pin configuration. This allows the ADC to connect directly to MCUs, DSPs and FPGAs using the existing processor interface and acquisition software.
The combined hardware and software compatibility helps reduce redesign work and supports faster migration from AD7608 to GX6608.
GX6608 vs AD7608: Key Specification Comparison
|
Specification |
AD7608 |
GX6608 |
|
Resolution |
18-bit |
18-bit |
|
Input Channels |
8 |
8 |
|
Sampling Operation |
Eight-Channel Simultaneous Sampling |
Eight-Channel Simultaneous Sampling |
|
Maximum Sampling Rate |
200 kSPS per Channel |
200 kSPS per Channel |
|
ADC Architecture |
SAR ADC |
SAR ADC |
|
Input Type |
Single-Ended, True Bipolar |
Single-Ended, True Bipolar |
|
Input Ranges |
±10 V / ±5 V |
±10 V / ±5 V |
|
Analog Supply |
5 V |
5 V |
|
Input Impedance |
1 MΩ |
1 MΩ |
|
Input Buffer |
Integrated |
Integrated |
|
Antialiasing Filter |
Integrated Second-Order Filter |
Integrated Second-Order Filter |
|
Internal Reference |
Integrated Reference and Buffer |
Configurable Reference Generator and Buffer |
|
Data Interface |
Parallel / Serial |
Parallel / SPI-Compatible Serial |
|
Package |
LQFP-64 |
LQFP-64 |
|
Pin-to-Pin Compatible |
— |
Yes |
|
Schematic or PCB Changes Required |
— |
No |
|
Processor Interface Changes Required |
— |
No |
|
Software Modification Required |
— |
No |
GX6608 maintains the principal resolution, sampling rate, input architecture and interface capabilities required by AD7608-based systems.
Integrated Signal-Chain Features
GX6608 includes a calibration algorithm that supports high-accuracy conversion and a bipolar zero-scale error as low as ±4 LSB. Channel-to-channel isolation below −100 dB helps reduce interference between simultaneously sampled signals.
Key GX6608 features include:
l Eight simultaneous-sampling 18-bit channels
l Up to 200 kSPS per channel
l Selectable ±10 V and ±5 V true bipolar inputs
l Single 5 V analog supply
l Bipolar zero-scale error as low as ±4 LSB
l Channel-to-channel isolation below −100 dB
l Integrated 1 MΩ input buffers
l Integrated second-order antialiasing filters
l Configurable precision reference generator and buffer
l Parallel and SPI-compatible serial interfaces
l LQFP-64 package
Applications
GX6608 is suitable for:
l Power-line monitoring and protection systems
l Multiphase motor control
l Instrumentation and industrial control
l Multiaxis positioning systems
l Multichannel data acquisition equipment
Request the GX6608 Datasheet and Samples
GXSC can provide the GX6608 datasheet, samples, quotation, stable supply and technical support for AD7608 replacement projects and new data acquisition designs.
Contact GXSC to discuss your AD7608 replacement or GX6608 product requirements.
mail