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| PartNumber | STS3921XL7BABA | STS3922X54BAAG | STS3921XM7BABA |
| Description | RF Front End | RF Front End | RF Front End |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | RF Front End | RF Front End | RF Front End |
| Type | RF Front End | RF Front End | RF Front End |
| Operating Frequency | - | - | - |
| NF Noise Figure | - | - | - |
| Operating Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Operating Supply Current | - | - | - |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Maximum Data Rate | 106 kb/s | 106 kb/s | 106 kb/s |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | WLCSP-20 | Die | WLCSP-20 |
| Series | STS3921 | STS3922 | STS3921 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Minimum Operating Temperature | - 25 C | - 25 C | - 25 C |
| Product Type | RF Front End | RF Front End | RF Front End |
| Factory Pack Quantity | 10000 | 1 | 1000 |
| Subcategory | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits |