ISDB-T/DVB-T Diversity Tuner The **MAX2135AETN+T** is a high-performance, low-power, direct-conversion tuner IC manufactured by **Maxim Integrated (now part of Analog Devices)**. Below are its key specifications, descriptions, and features based on factual data:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Part Number:** MAX2135AETN+T
- **Package:** 56-Pin TQFN (Thin Quad Flat No-Lead)
- **Operating Temperature Range:** -40°C to +85°C
- **Supply Voltage:** 3.3V (typical)
- **Current Consumption:** ~120mA (typical)
- **Frequency Range:**
- RF Input: 42MHz to 1002MHz
- IF Output: Zero-IF (Direct Conversion)
- **Gain Control:** Programmable RF and Baseband Gain
- **Noise Figure:** ~4dB (typical)
- **Input IP3 (Third-Order Intercept Point):** +5dBm (typical)
### **Descriptions:**
- The MAX2135AETN+T is a direct-conversion (Zero-IF) tuner designed for **digital TV (DVB-T, ISDB-T, ATSC)** and **cable TV (QAM)** applications.
- It integrates an **RF amplifier, mixer, PLL synthesizer, VCO, and baseband filters** in a single chip.
- Supports **automatic gain control (AGC)** for optimal signal reception.
- Features **low power consumption** and high linearity, making it suitable for portable and fixed TV tuner applications.
### **Features:**
- **Direct-Conversion Tuner Architecture** (Zero-IF) for reduced external components.
- **Integrated PLL and VCO** with **low phase noise**.
- **Programmable RF and Baseband Gain** for flexible signal conditioning.
- **I²C-Compatible Digital Interface** for control and configuration.
- **Low External Component Count** (minimizes BOM cost).
- **High Linearity (IP3)** for robust performance in crowded RF environments.
- **Optimized for DVB-T, ISDB-T, ATSC, and QAM demodulation.**
This information is strictly based on the manufacturer's datasheet and technical documentation.
