2.4GHz 802.11b Zero-IF Transceivers The MAX2820EGM-TD is a transceiver IC manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:
### **Specifications:**
- **Manufacturer:** Maxim Integrated (now Analog Devices)
- **Part Number:** MAX2820EGM-TD
- **Package:** 48-pin QFN (7mm x 7mm)
- **Operating Frequency Range:** 2.4GHz to 2.5GHz
- **Modulation Support:** IEEE 802.11b/g (DSSS/CCK/OFDM)
- **Supply Voltage:** 2.7V to 3.6V
- **Current Consumption:**
- Receive Mode: ~75mA
- Transmit Mode: ~200mA (varies with output power)
- **Output Power:** Up to +16dBm (adjustable)
- **Receiver Sensitivity:** -85dBm (typical for 802.11b, 11Mbps)
- **Integrated Features:**
- PA (Power Amplifier)
- LNA (Low-Noise Amplifier)
- Mixers
- VCO (Voltage-Controlled Oscillator)
- PLL (Phase-Locked Loop)
### **Descriptions:**
The MAX2820EGM-TD is a single-chip, 2.4GHz RF transceiver designed for IEEE 802.11b/g wireless LAN applications. It integrates all necessary RF functions, including a power amplifier, low-noise amplifier, and frequency synthesizer, reducing external component count. It supports direct conversion (zero-IF) architecture for simplified baseband interfacing.
### **Features:**
- **Single-Chip Transceiver:** Combines Tx and Rx paths in one IC.
- **Integrated PA & LNA:** Eliminates need for external amplification stages.
- **Low-Noise Figure:** Optimized for high receiver sensitivity.
- **Programmable Output Power:** Adjustable up to +16dBm.
- **Low Power Consumption:** Supports battery-powered applications.
- **On-Chip VCO & PLL:** Reduces external components.
- **Direct Conversion Architecture:** Simplifies baseband design.
- **Digital Control Interface:** SPI-compatible for configuration.
This information is strictly based on the manufacturer's datasheet and technical documentation.
