MAX2136 ISDB-T/DVB-T低IF调谐器

MAX2136 ISDB-T/DVB-T低IF调谐器

概述

The MAX2136 low-power, 6MHz ISDB-T and 6MHz/7MHz/8MHz DVB-T low-IF tuner directly converts broadcast ISDB-T and DVB-T signals to a low-IF using a broadband I/Q downconverter. The operating frequency range covers the VHF and UHF broadcast TV bands from 90MHz to 862MHz.

The MAX2136 integrates LNAs, RF variable-gain amplifiers (VGAs), VHF and UHF tracking filters, I/Q downconverting mixers, baseband VGAs, and low-IF filters. The device also includes a fully monolithic VCO and tank circuit as well as a complete frequency synthesizer including an on-chip crystal oscillator and output buffer/divider.

The device incorporates a 2-wire (I²C) serial control interface with multiple read and write addresses. A low-power standby mode is available whereupon the signal path is shut down while leaving the serial control interface and register circuits active. Additionally, the entire device can be shut down by an external pin.

The MAX2136 is available in a 32-pin thin QFN package (5mm x 5mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

关键特性

Multiple Frequency Ranges

• VHF-L: 90MHz to 108MHz
• VHF-H: 170MHz to 230MHz
• UHF: 470MHz to 862MHz

Low UHF Noise Figure: 3.7dB (typ)

High Dynamic Range: -99dBm to +10dBm

Integrated VHF/UHF Tracking Filter

Integrated VCO and Tank Circuits

Low Phase Noise: -100dBc/Hz at 10kHz (typ)

Integrated Channel Filters (6MHz, 7MHz, and 8MHz)

Single +2.7V to +3.47V Supply Voltage Range

Low Power: 210mW at V_CC = 3.0V (typ)

Shutdown and Standby Modes

I²C Serial Interface

应用/使用

汽车TV系统
笔记本/台式机电视接收器
便携式LCD TV
便携式导航设备