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| Part Number | MAX2821ETM+T | MAX2831ETM+T | MAX2820ETM+T | MAX2821ETM+ |
|---|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Obsolete | Active | Obsolete | Obsolete |
| Type | TxRx Only | TxRx Only | TxRx Only | TxRx Only |
| RF Family/Standard | WiFi | WiFi | WiFi | WiFi |
| Protocol | 802.11b | 802.11b/g | 802.11b | 802.11b |
| Modulation | CCK | CCK, OFDM, QPSK | CCK | CCK |
| Frequency | 2.4GHz | 2.4GHz | 2.4GHz | 2.4GHz |
| Data Rate (Max) | 22Mbps | 54Mbps | 22Mbps | 22Mbps |
| Power - Output | 3dBm | 21dBm | 3dBm | 3dBm |
| Sensitivity | -97dBm | -76dBm | -97dBm | -97dBm |
| Memory Size | - | - | - | - |
| Serial Interfaces | SPI | SPI | SPI | SPI |
| GPIO | - | - | - | - |
| Voltage - Supply | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V |
| Current - Receiving | 80mA | 62mA | 80mA | 80mA |
| Current - Transmitting | 70mA | 82mA ~ 209mA | 70mA | 70mA |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 48-WFQFN Exposed Pad | 48-WFQFN Exposed Pad | 48-WFQFN Exposed Pad | 48-WFQFN Exposed Pad |
| Supplier Device Package | 48-TQFN (7x7) | 48-TQFN (7x7) | 48-TQFN (7x7) | 48-TQFN (7x7) |
