收音IC BK1080

产品概述：

1080全数字单晶片集成电路。接收灵敏度高、IF中频选择性好、通用I2C总线控制、搜台速度快、内置功放电路、外围元件少、噪声系数极小。具有体积小、低功耗、低成本、应用简单、使用范围广等优点。是一款简单易用且具极高性价比的单芯片FM立体声收音芯片。

功能特点：

A,灵敏度高、噪声小、抗干扰能力强、外接元件极少、使用极其简单。

B, I2C串行数据总线接口通讯。

C,采用先进的SEEK硬件搜台方式，全频段搜索只需4-5Sec，大幅提高搜台速度。

D,内置LDO调整、低功耗、超宽电压使用范围（2.8-5.5VDC）。

G,内置噪声消除、软静音、低音增强电路设计。

H, FM及MPX立体声采用DSP处理器。

I,内置功放,可以驱动负载为32欧的耳机.

General Description

The BK1080 FM receiver employs a low-IF architecture, mixed signal image rejection and all digital demodulation technology. The station scan of BK1080 searches radio stations based on both the channel RSSI estimation and signal quality assessment, increases the number of receivable stations while avoids false stops. BK1080 enables FM radio eception with low power, small board space and minimum number of external components.

All functions are controlled through a simple 3-wire serial interface or I2C serial interface. The device operates from a power supply of 2.7 – 5.5 volts.

2 Features

Support 76~108 MHz band Automatic gain control Automatic frequency control

Seek tuning

Receive signal strength indicator

Channel quality assessment

Stereo decoder

Automatic stereo/mono switching

Automatic noise suppression

50us/75us de-emphasis

2.7 ~ 5.5 V supply voltage

Active current 19 mA

32.768 kHz,12MHz,24MHz,13MHz,

26MHz,19.2MHz and 38.4MHz reference clock

I2C and 3-wires control interface

Applications

Cellular handset

MP3 player

PDAs and notebook