描述 Description

The MxL691 is a single-chip, integrated tuner and demodulator receiver that targets digital TV, single/multi-channel STB, USB/WiFi adapter, and WiFi/wired/RF Smart antenna system applications for the ATSC standard.

The MxL691 takes an RF input signal from 54MHz to 884MHz, and outputs an MPEG TS in serial or parallel format. With its high-level of integration, the chip integrates the following to simplify the boardlevel design:

? Broadband input filter

? Channel filter

? AGC

? LO

? PLL

? Demodulator

The device comes in a small 5 x 5mm QFN package, enabling a very compact design, reduced BOM cost, and lower power consumption.

The MxL691 is controlled through an I2C interface. The IC supports either single supply operation using 3.3V, or dual supply operation using 3.3V and 1.8V.

特性 Features

·Wide tuning range from 54MHz to 885MHz
·Single RF input
·Integrated channel filtering that does not require SAW filters
·Loop-Through (LT) output function
·On-chip voltage regulators enable a single supply operation
·Typical low-power consumption of <550mW in dual supply operation
·Excellent immunity to LTE and WiFi interference
·Input power reporting
·Serial or parallel TS interface
·CEA-909-compliant Smart Antenna Interface Specification (modes A and B)
·API-based software interface

應(yīng)用 Application

·Single-channel ATSC zapper
·Dual-channel PVR STB
·Quad-channel PVR STB
·ATSC gateway
·ATSC to USB/WiFi adapter
·ATSC wired/RF Smart antenna