ASK/FSK 868MHz Wireless Transceiver The TDA5250 is a low-power ASK/FSK transceiver IC manufactured by Infineon Technologies. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Frequency Range:** 433 MHz to 435 MHz
- **Modulation Types:** ASK (Amplitude Shift Keying) and FSK (Frequency Shift Keying)
- **Supply Voltage:** 2.1 V to 5.5 V
- **Current Consumption:**
- Standby: 0.3 µA (typical)
- Receive Mode: 5.5 mA (typical)
- Transmit Mode: 9.5 mA (at 0 dBm output power)
- **Output Power:** Adjustable up to +5 dBm
- **Sensitivity:** -110 dBm (for 12 dB SINAD)
- **Data Rate:** Up to 20 kbps
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** SSOP-20 (Small Shrink Outline Package)
### **Descriptions:**
- Designed for low-power wireless applications such as remote keyless entry (RKE), home automation, and sensor networks.
- Integrates a fully functional RF transceiver with low power consumption, making it suitable for battery-operated devices.
- Supports both ASK and FSK modulation schemes for flexible communication.
### **Features:**
- **Low Power Consumption:** Optimized for battery-powered applications.
- **Integrated PLL (Phase-Locked Loop):** Ensures stable frequency generation.
- **Wake-up Function:** Allows power-saving operation with wake-up via RF signal.
- **On-Chip Voltage Regulator:** Provides stable supply voltage.
- **RSSI (Received Signal Strength Indicator):** Helps in signal quality assessment.
- **Few External Components Required:** Simplifies PCB design and reduces BOM cost.
- **Configurable via SPI Interface:** Enables flexible control and parameter adjustment.
This information is based on the Infineon datasheet for the TDA5250. For detailed application notes, refer to the official documentation.
