Key facts
- Brand
- Analog Devices
- Model
- ADF7021
- Category
- Transceiver with Isolated Power
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-03
Start here
Analog Devices ADF7021-V Transceiver IC Datasheet
The ADF7021‑V is a narrow‑band RF transceiver IC that uses an external voltage‑controlled oscillator (VCO) to achieve low phase‑noise performance across 80 MHz to 960 MHz. It supports multiple modulation schemes (2FSK, 3FSK, 4FSK, MSK) and offers programmable IF filter bandwidths of 9 kHz, 13.5 kHz, and 18.5 kHz.
The device operates from a 2.3 V to 3.6 V supply, provides programmable output power from –16 dBm to +13 dBm in 63 steps, and includes on‑chip ADC, temperature sensor, RSSI, and an automatic frequency‑control loop. Detailed register maps and pin descriptions enable integration with microcontrollers or DSPs.
Analog Devices ADF7021 specifications
| Operating frequency range | 80 MHz – 960 MHz |
|---|---|
| Power supply voltage | 2.3 V – 3.6 V |
| Programmable output power | –16 dBm to +13 dBm (63 steps) |
| Data rate range | 0.05 kbps – 24 kbps |
| Receiver sensitivity (2FSK) | –125 dBm at 250 bps, –122 dBm at 1 kbps |
| In‑band phase noise | –203 dBc/Hz |
| External VCO tuning range | 0.2 V – 2 V |
All Analog Devices ADF7021 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the operating frequency range of the ADF7021‑V?
It covers 80 MHz to 960 MHz using an external VCO.
What output power range can be programmed on the ADF7021‑V?
The output power is programmable from –16 dBm to +13 dBm in 63 steps.
Can the sync word detect signal be accessed on the SWD pin in 4FSK mode?
No, the SWD pin is automatically muxed to the test DAC output in 4FSK mode, preventing access to the sync word detect signal.
What IF filter bandwidth settings are available for the ADF7021?
The ADF7021 offers selectable IF filter bandwidths of 25 kHz, 18.75 kHz, and 12.5 kHz.