CN-0238 is a reference circuit for the AD9434 12-Bit, 500 MSPS 1.8 V Analog-to-Digital Converter. This circuit has been designed and tested for quick and easy system integration to help solve today's analog, mixed-signal, and RF design challenges.
The document details Circuit Note CN-0238 from Analog Devices' 'Circuits from the Lab™' series. It presents a wideband receiver front end designed for quick system integration to solve analog, mixed-signal, and RF design challenges. The circuit utilizes an ADA4960-1 ultralow noise differential amplifier driver and an AD9434 12-bit, 500 MSPS analog-to-digital converter (ADC).
| Bandwidth (3 dB) | 290 MHz |
|---|---|
| Pass-Band Flatness | 1dB (6 MHz to 200 MHz) |
| SNR at 140 MHz | 64.1 dBFS |
| SFDR at 140 MHz | 70.4 dBc |
| Overall Gain at 10 MHz | 2.3 dB |
The circuit is based on the ADA4960-1 ultralow noise differential amplifier driver and the AD9434 12-bit, 500 MSPS analog-to-digital converter (ADC).
A third-order Butterworth antialiasing filter is optimized based on the performance and interface requirements of the amplifier and ADC.
The total insertion loss due to the filter network, transformer, and other resistive components is only 1.2 dB.