DataSheet39.com

What is BK1086?

This electronic component, produced by the manufacturer "BEKEN", performs the same function as "(BK1086 / BK1088) BROADCAST AM/FM/SW/LW RADIO RECEIVER".


BK1086 Datasheet PDF - BEKEN

Part Number BK1086
Description (BK1086 / BK1088) BROADCAST AM/FM/SW/LW RADIO RECEIVER
Manufacturers BEKEN 
Logo BEKEN Logo 


There is a preview and BK1086 download ( pdf file ) link at the bottom of this page.





Total 30 Pages



Preview 1 page

No Preview Available ! BK1086 datasheet, circuit

BK1086/88
BROADCAST AM/FM/SW/LW RADIO RECEIVER
Features
„ Worldwide 64~108 MHz FM band
support
„ Worldwide 520~1710kHz AM band
support
„ SW band support(2.3-21.85MHz,
BK1088 only)
„ LW band support(153-279kHz,BK1088
only)
„ Automatic gain control(AGC)
„ Automatic frequency control(AFC)
„ Digital FM stereo decoder
„ Automatic FM stereo/mono blend
„ Automatic noise suppression
„ 50us/75us de-emphasis
„ RDS/RBDS decoder
„ 2.4 ~ 5.5 V supply voltage
„ Wide range reference clock support
„ 32.768KHz crystal oscillator
„ 4x4 mm 24-pin QFN package
Applications
„ Table and portable radios
„ CD/DVD players
„ Modules
General Description
The BK1086/88 AM/FM receiver employs a
low-IF architecture, mixed signal image
rejection and all digital demodulation
technology. The station scan of BK1086/88
searches radio stations based on both the
channel RSSI estimation and signal quality
assessment, increases the number of receivable
stations while avoids false stops. BK1086/88
enables FM/AM/SW/LW radio reception with
low power, small board space and minimum
number of external component.
24 23 22 21 20 19
GND 1
18 VA
FMI 2
RFGND 3
GND PAD
17 GND
16 LOUT
AMI 4
BK1086/88
15 ROUT
GND 5
14 GND
NC 6
13 VD
7 8 9 10 11 12
QFN 24 Pin Assignments (Top View)
Functional Block Diagram
FM ANT
FM LNA
MIXER
RFGND
AM LNA
MIXER
PGA
PGA
ADC
ADC
RDS
DSP
DAC LOUT
DAC ROUT
32.768KHz
VDD
AUTO
TUNE
0/90
DPLL
APLL
REG BK1086/88
GPIO
SDIO
SEN
SCLK
VIO
Rev.1.0
Copyright©2010 by Beken Corporation
BK1086/88
Beken Confidential. Information contained herein is covered under non-disclosure agreement (NDA).
Free Datasheet http://www.datasheet4u.net/

line_dark_gray
BK1086 equivalent
2.4 Stereo Audio Processing
The output of the FM demodulator is a
stereo multiplexed (MPX) signal. MPX
signal format consists of left + right
(L+R) audio, left – right (L–R) audio, a
19 kHz pilot tone, and RDS data.
The BK1086/88 has integrated stereo
decoder automatically decodes the MPX
signal. The 0 to 15 kHz (L+R) signal is
the mono output of the FM tuner. Stereo
is generated from the (L+R), (L-R), and
a 19 kHz pilot tone. The pilot tone is
used as a reference to recover the (L-R)
signal. Separate left and right channels
are obtained by adding and subtracting
the (L+R) and (L-R) signals,
respectively. Adaptive noise suppression
is employed to gradually combine the
stereo left and right audio channels to a
mono (L+R) audio signal as the signal
quality degrades to maintain optimum
sound fidelity under varying reception
conditions. The signal level range over
which the stereo to mono blending
occurs can be adjusted by setting the
BLNDADJ [1:0] register. Stereo/mono
status can be monitored with the ST
register bit and mono operation can be
forced with the MONO register bit and
stereo operation can be forced with the
STEREO register bit.
BK1086/88 uses pre-emphasis and de-
emphasis to improve the signal-to-noise
ratio of FM receivers by reducing the
effects of high frequency interference
and noise. When the FM signal is
transmitted, a pre-emphasis filter is
applied to accentuate the high audio
frequencies. All FM receivers
incorporate a de-emphasis filter which
attenuates high frequencies to restore a
BK1086/88
flat frequency response. Two time
constants, 50 or 75μs, are used in
various regions. The de-emphasis time
constant is programmable with the DE
bit. High-fidelity stereo digital-to-analog
converters (DACs) drive analog audio
signals onto the LOUT and ROUT pins.
The audio output may be muted with the
DMUTE bit. Volume can be adjusted
digitally with the VOLUME [4:0] bits.
The soft mute feature is available to
attenuate the audio outputs and minimize
audible noise in very weak signal
conditions. The soft mute attack and
decay rate can be adjusted with the
SMUTER [1:0] bits where 00 is the
fastest setting. The soft mute attenuation
level can be adjusted with the SMUTEA
[1:0] bits where 00 is the most
attenuated. The soft mute disable
(DSMUTE) bit may be set high to
disable this feature.
2.5 Seek/Tune System
In FM mode, channel spacing of 1050,
100 or 200 kHz is selected with bits
SPACE [1:0]. The channel is selected
with bits CHAN [14:0]. The bottom of
the band is set to 64 MHz, 76 MHz or 87
MHz with the bits BAND [1:0]. The
tuning operation begins by setting the
TUNE bit. After tuning completes, the
seek/tune complete (STC) bit will be set
and the RSSI level is available by
reading bits RSSI [6:0]. The TUNE bit
must be set low after the STC bit is set
high in order to prepare for the next tune
operation and clear the STC bit. Seek
tuning searches up or down for a channel
with RSSI greater than the seek
threshold set with the SEEKTH [6:0]
bits and SNR greater than the SNR
threshold set with the SKSNR [6:0] bits.
Proprietary and Confidential
Page 5 of 30
Free Datasheet http://www.datasheet4u.net/


line_dark_gray

Preview 5 Page


Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for BK1086 electronic component.


Information Total 30 Pages
Link URL [ Copy URL to Clipboard ]
Download [ BK1086.PDF Datasheet ]

Share Link :

Electronic Components Distributor


An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists.


SparkFun Electronics Allied Electronics DigiKey Electronics Arrow Electronics
Mouser Electronics Adafruit Newark Chip One Stop


Featured Datasheets

Part NumberDescriptionMFRS
BK1080The function is FM Receiver IC. BEKENBEKEN
BK1081The function is FM STEREO TRANSMITTER. BekenBeken
BK1085The function is FM STEREO TRANSMITTER. BekenBeken

Semiconductors commonly used in industry:

1N4148   |   BAW56   |   1N5400   |   NE555   |  

LM324   |   BC327   |   IRF840  |   2N3904   |  



Quick jump to:

BK10     1N4     2N2     2SA     2SC     74H     BC     HCF     IRF     KA    

LA     LM     MC     NE     ST     STK     TDA     TL     UA    



Privacy Policy   |    Contact Us     |    New    |    Search