QPK1521
High-speed GaN SPDT switch driver
Key Features
- High-speed SPDT switch control (<50 ns switching)
- Complementary outputs for TX/RX path selection
- Wide negative control voltage range (-20 V to -50 V)
- Compatible with 1.8 V to 5 V CMOS logic
- Supports multi-throw SPnT switch configurations
- Low external component count for simplified design
- Integrated READY signal for safe bias operation
- Ultra-compact 2 × 2 mm package
The QPK1521 is a high-speed GaN SPDT switch driver that delivers complementary control signals for fast and reliable RF path switching in front-end modules and RF GaN Switches.
As part of the QPK152x chipset, it works in conjunction with the QPK1520 gate controller and QPK1522 drain controller to synchronize RF signal routing with gate and drain bias transitions. This coordinated operation enables seamless TX/RX switching, improved system timing alignment, and robust protection of GaN devices, while supporting multi-throw switch architectures and simplifying overall RF front-end design.
Typical Applications
- AESA radar
- Phased array systems
- Electronic warfare
- RF front-end modules (FEMs)
Product Categories
| Pulse Control Mode | Gate |
| Min Drain Switch Voltage(V) | N/A |
| Max Drain Switch Voltage(V) | N/A |
| External Switch FET Support | No |
| Negative Gate Regulator Bias Range(V) | -20 to -50 |
| IDQ Auto Calibration | No |
| Automatic Power Sequencer | No |
| Negative Gate Voltage Generation | No (requires external VEE) |
| Package Type | LGA |
| Package(mm) | 2.0 x 2.0 |
| RoHS | Yes |
| Lead Free | Yes |
| Halogen Free | Yes |
| ITAR Restricted | No |
| ECCN | EAR99 |