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What is BK1089?

This electronic component, produced by the manufacturer "BEKEN", performs the same function as "SINGLE-CHIP BROADCAST FM RADIO RECEIVER".


BK1089 Datasheet PDF - BEKEN

Part Number BK1089
Description SINGLE-CHIP BROADCAST FM RADIO RECEIVER
Manufacturers BEKEN 
Logo BEKEN Logo 


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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
„
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
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 Decoder
DPLL
Tuning system
REG
BK1089
DAC
LOUT
DAC
ROUT
GPIO
ST
STC
VL
Interface
VUP
VDM
SUP
SDM
RST
PWD
Preliminary Rev.0.2
Copyright©2010 by Beken Corporation
BK1089
Beken Confidential. Information contained herein is covered under non-disclosure agreement (NDA).

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BK1089 equivalent
BK1089
3 Design Specification
3.1 Recommended Operating Conditions
Table 1 Recommended Operating Conditions
Parameter
Symbol
Test Condition Min Typ Max Unit
Digital Supply Voltage
VD
2.3 — 5.5
V
Analog Supply Voltage
VA
2.3 — 5.5
V
Interface Supply Voltage
VIO
1.6 — 3.6
V
Ambient Temperature
TA
–20 25 85 °C
Notes:
All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions. Typical values
apply at VD = VA = 3.3 V and 25 °C unless otherwise stated. Parameters are tested in production unless otherwise stated.
For BK1080 QFN24-2 and BK1080 SOP16&TSSOP16 package ,Supply Voltage range is 2.7V-3.6V
3.2 Power Consumption Specification
Table 2 Power Consumption Specification
Parameter
Symbol Test Condition
Min Typ Max
Supply Current BK1080
IS
ENABLE = 1
DISABLE = 0
— 22 24
Power down Current
IPD
ENABLE = 0
DISABLE = 1
— 20 30
Interface Power down Current
IpIO
SCLK, RCLK inactive
ENABLE = 0
1.9
5
Unit
mA
μA
μA
3.3 Receiver Characteristics
Table 3 Receiver Characteristics
Parameter
Input Frequency
Sensitivity with Headphone
Network[2, 3, 4,5]
LNA Input Resistance[7]
Test Condition
(S+N)/N = 26 dB
Input IP3[8]
AM Suppression[2, 3, 4, 5, 7]
Adjacent Channel Selectivity
Alternate Channel Selectivity
Audio Output Voltage[2, 3, 7, 10]
Audio Stereo Separation[2, 5, 7,10]
Audio Mono S/N[2, 3, 4, 5, 7, 13]
Audio Stereo S/N[2, 3, 4, 5, 7, 13]
Audio THD[2, 3, 5, 7, 10]
Audio Common Mode Voltage[12]
Audio Output Load Resistance
Seek/Tune Time
m = 0.3
±200 kHz
±400 kHz
ENABLE = 1
Single-ended
Min Typ Max Unit
65 — 108 MHz
— 1.8 2.5 μV EMF
2.5 3 3.5 k
88
dBμV
EMF
40 45 — dB
40 —
dB
50 —
dB
— 110
mV
— 30 — dB
55 —
dB
50 —
dB
— 0.2 —
%
1.1 1.2 1.3
V
8 ——
— — 60 ms/chan
Proprietary and Confidential
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