GXSC Analog-to-Digital Converter Compatible with ADS4449 for Pulse Radar Applications

Pulse radar is a core detection device that achieves ranging, velocity measurement, and target identification by transmitting high-frequency narrow pulse signals and receiving target echoes. Its advantages include high instantaneous power and excellent range resolution. By capturing faint pulse echo signals, it precisely obtains key target information such as distance, velocity, and bearing, supporting target identification and tracking. Its industrial-grade wide temperature characteristics adapt to complex environments like outdoor and airborne applications.

The operating principle of pulse radar involves a transmitter emitting high-frequency narrow pulses. These signals reflect off targets to form echoes, which are received and converted into digital signals by the receiver. Signal processing modules then analyze and compute this data to ultimately achieve target detection and identification.

The GXSC four-channel 14-bit 250 MSPS analog-to-digital converter is ideally suited for pulse radar systems. Each channel‘s ADC core employs a multi-stage, differential pipeline architecture and integrates output error correction logic. Each ADC offers high bandwidth and supports multiple user-selectable input ranges. The ADC integrates a duty cycle correction circuit to stabilize the internal clock signal‘s duty cycle, ensuring consistently outstanding conversion performance. Converted data is directly output via two pairs of cross-connected, multi-channel multiplexed 14-bit LVDS level interface circuits.

GXSC Analog-to-Digital Converter Product Advantages:

Compatible with reference model ADS4449

 Four channels at 250 MSPS

Low power consumption, no heat sink required

Built-in clock duty cycle stabilizer (DCS)

Internal reference voltage source

Single 1.8V supply operation

Programmable analog input range

Programmable swing LVDS output

Peak-to-peak input voltage range: 1.4Vpp to 2.0Vpp, Type: 1.75Vpp

 Supports 1.8V or 3.3V serial four-wire SPI interface control

Flexible power-down modes

Plastic BGA144 package, operating temperature range: -55°C to +125°C

Static performance: DNL: D0.75/+0.75 LSB, INL: 0.40/+0.40 LSB

 Differential analog input bandwidth: 400MHz

Dynamic performance:

-fin=90MHz, ENOB=11.4Bit, SNDR=70.3dBFS, SNR=70.6dBFS

-fin=140MHz, ENOB=11.2Bit, SNDR=69.1dBFS, SNR=69.5dBFS

-fin=220MHz, ENOB=11.2 bits, SNDR=69.2dBFS, SNR=69.4dBFS

-fin=350MHz, ENOB=10.6 bits, SNDR=65.8dBFS, SNR=66.1dBFS