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| Part Number | SI4123-BM | SI4126-BM | SI4123-BT |
|---|---|---|---|
| Manufacturer | Silicon Labs | Skyworks Solutions Inc. | Silicon Labs |
| Product Status | Obsolete | Obsolete | Obsolete |
| Type | Frequency Synthesizer | Frequency Synthesizer | Frequency Synthesizer |
| PLL | Yes | Yes | Yes |
| Input | Crystal | Crystal | Crystal |
| Output | Clock | Clock | Clock |
| Number of Circuits | 1 | 1 | 1 |
| Ratio - Input:Output | 1:2 | 1:2 | 1:2 |
| Differential - Input:Output | No/No | No/No | No/No |
| Frequency - Max | 1.8GHz | 2.3GHz | 1.8GHz |
| Divider/Multiplier | Yes/No | Yes/No | Yes/No |
| Voltage - Supply | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 28-VFQFN Exposed Pad | 28-VFQFN Exposed Pad | 24-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 28-QFN (5x5) | 28-QFN (5x5) | 24-TSSOP |
