AD9864 is a general-purpose IF subsystem produced by Analog Devices. It is suitable for a variety of narrow-band radio products, such as UHF/VHF FDMA receivers, TETRA, APCO25, GSM/EDGE portable and mobile radio products, and SATCOM terminals.
The AD9864 is a narrow‑band IF subsystem that converts a low‑level 10 MHz to 300 MHz IF input to digital I/Q data. It includes a low‑noise amplifier, mixer, band‑pass Z‑A ADC, programmable decimation filter, AGC, and on‑chip LO and clock synthesizers. The device operates from a single 2.7 V to 3.6 V supply and consumes about 17 mA in normal mode.
The datasheet provides detailed electrical specifications, pin descriptions for the 48‑lead LFCSP package, absolute maximum ratings, thermal resistance, and ordering information. It also defines the SPI and SSI interfaces used to program the device and retrieve data.
| Input frequency range | 10 MHz to 300 MHz |
|---|---|
| Output signal bandwidth | 6.8 kHz to 270 kHz |
| Supply voltage (digital core) | 2.7 V to 3.6 V |
| Supply voltage (LO/CLK charge pump) | 2.7 V to 5.5 V |
The AD9864 accepts IF inputs from 10 MHz up to 300 MHz.