CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer The **MAX2309ETI+T** is a **+3V to +5.5V, 1µA, 315MHz/433MHz ASK/FSK Superheterodyne Receiver** manufactured by **Maxim Integrated (now part of Analog Devices)**.  

### **Key Specifications:**  
- **Supply Voltage Range:** +3V to +5.5V  
- **Current Consumption:** 1µA (low-power shutdown mode)  
- **Frequency Range:** 315MHz or 433MHz (selectable)  
- **Modulation Types:** ASK (Amplitude-Shift Keying) and FSK (Frequency-Shift Keying)  
- **Receiver Type:** Superheterodyne architecture  
- **IF Frequency:** 10.7MHz  
- **Data Rate:** Up to 115kbps  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-pin TQFN (Thin Quad Flat No-Lead)  

### **Features:**  
- **Low Power Consumption:** Ideal for battery-powered applications  
- **Integrated IF Filter:** Eliminates the need for external SAW filters  
- **Programmable Data Slicer:** Adjustable for optimal performance  
- **RSSI (Received Signal Strength Indicator):** Provides signal strength measurement  
- **Shutdown Mode:** Reduces power consumption when inactive  
- **Small Footprint:** Suitable for space-constrained designs  

### **Applications:**  
- Remote keyless entry (RKE)  
- Tire pressure monitoring systems (TPMS)  
- Wireless sensor networks  
- Home automation  
- Industrial remote control  

This receiver is designed for low-power, high-performance wireless communication in the 315MHz and 433MHz ISM bands.

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer