| Part Number | SI1027-A-GM | SI1037-A-GM | 
|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | 
| Category | RF Transceiver ICs | RF Transceiver ICs | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Type | TxRx + MCU | TxRx + MCU | 
| RF Family/Standard | General ISM < 1GHz | General ISM < 1GHz | 
| Protocol | EZRadioPro | EZRadioPro | 
| Modulation | FSK, GFSK, OOK | FSK, GFSK, OOK | 
| Frequency | 240MHz ~ 960MHz | 240MHz ~ 960MHz | 
| Data Rate (Max) | 256Kbps | 256Kbps | 
| Power - Output | 13dBm (Max) | 13dBm (Max) | 
| Sensitivity | -121dBm | -121dBm | 
| Memory Size | 16kB Flash, 4.4kB RAM | 16kB Flash, 4.4kB RAM | 
| Serial Interfaces | I²C, SPI, UART | I²C, SPI, UART | 
| GPIO | 53 | 53 | 
| Voltage - Supply | 1.8V ~ 3.8V | 1.8V ~ 3.8V | 
| Current - Receiving | 18.5mA | 18.5mA | 
| Current - Transmitting | 17mA ~ 30mA | 17mA ~ 30mA | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 85-VFLGA Exposed Pad | 85-VFLGA Exposed Pad | 
| Supplier Device Package | 85-LGA (6x8) | 85-LGA (6x8) |