This document describes the features and characteristics of the low power IEEE 802.15.4 zero-IF 2.4 GHz transceiver IC ADF7241, developed by Analog Devices.
The ADF7241 is a highly integrated, low‑power transceiver designed for the global 2.4 GHz ISM band. It supports IEEE 802.15.4‑2006 PHY requirements with a fixed 250 kbps data rate and offers a zero‑IF architecture for high sensitivity (‑95 dBm) and strong blocker rejection. The device operates from 1.8 V to 3.6 V and includes an 8‑bit processor, SPI control, and optional external PA/LNA support.
Key features include programmable output power (‑20 dBm to +4.8 dBm), a 256‑byte packet RAM, SPORT interface for data streaming, integrated 32 kHz wake‑up oscillator, temperature sensor, and battery monitor. The datasheet provides detailed specifications, pin descriptions, timing diagrams, and recommended layout information.
| Frequency range | 2400 MHz to 2483.5 MHz |
|---|---|
| Supply voltage range | 1.8 V to 3.6 V |
| Data rate | 250 kbps |
| Receive sensitivity | ‑95 dBm |
| Programmable output power | ‑20 dBm to +4.8 dBm |
The ADF7241 operates from 2400 MHz to 2483.5 MHz.
Typical current consumption in receive mode is 19 mA.
The maximum transmit power is 3 dBm (programmable up to +4.8 dBm).
The device operates with a supply voltage between 1.8 V and 3.6 V.