BK1089
SINGLE-CHIP BROADCAST FM RADIO RECEIVER
Features
Support 64~108 MHz band 1 Automatic gain control(AGC) Au...
BK1089
SINGLE-CHIP BROADCAST FM RADIO RECEIVER
Features
Support 64~108 MHz band 1 Automatic gain control(AGC) Automatic frequency control(AFC) Seek tuning Channel quality assessment Digital FM stereo decoder Automatic stereo/mono switching Automatic noise suppression 75us de-emphasis 2.3 ~ 5.5 V supply
voltage Active current 22 mA 32.768KHz crystal oscillator 4x4 mm 24-pin QFN package and 16-pin
SOP package
Notes 1. Band is selected by internal bonding ,
default is 87.5-108MHz.
Applications
Toys
GND GND PWD STC VL ST
24 23 22 21 20 19
GND 1
18 VA
FMIN 2
17 GND
GND 3 FMIP 4
(BK1089) GND
16 LOUT 15 ROUT
GND 5
14 GND
VUP 6
13 VD
7 8 9 10 11 12
VDM SUP SDM RCLK AMODE
VIO
QFN 24 Pin Assignments (Top View)
GND 1 GND 2 FMIN 3 GND 4 VUP 5 VDM 6 SUP 7 SDM 8
BK1089
16 PWD 15 VDD 14 GND 13 LOUT 12 ROUT 11 VDD 10 AMODE 9 RCLK
General Description
The BK1089 single-chip FM receiver employs a low-IF architecture, mixed signal image rejection and all digital demodulation technology. The station scan of BK1089 searches radio stations based on both the channel RSSI estimation and signal quality assessment, increases the number of receivable stations while avoids false stops. BK1089 enables FM radio reception with low power, small board space and minimum number of external components.
SOP 16 Pin Assignments (Top View)
Functional Block Diagram
FMIN FMIP
32.768KHz
RCLK
2.2-3.6 V
VDD
LNA PGA
RF/Analog
APLL
ADC
AGC
FM DEMOD
Stereo Dec...