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BK1085のメーカーはBekenです、この部品の機能は「FM STEREO TRANSMITTER」です。 |
部品番号 | BK1085 |
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部品説明 | FM STEREO TRANSMITTER | ||
メーカ | Beken | ||
ロゴ | |||
このページの下部にプレビューとBK1085ダウンロード(pdfファイル)リンクがあります。 Total 20 pages
BK1085
FM STEREO TRANSMITTER
Features
Support 64~125 MHz band
Fully integrated PLL
Digital FM stereo encoder
50us/75us pre-emphasis
Max output power 10dBm
Output power programmable
2.5 ~ 3.6 V supply voltage
Active current 15 mA
Wide range reference clock support
3-wireSPI or 2-wire I2C interface
3x3 mm 20-pin QFN package ,16-pin
TSSOP package or 10-pin SSOP
QFN 20 Pin Assignments (Top View)
Applications
MP3 Player
Wireless Speaker
Toys
Functional Block Diagram
http://www.DataSheet4U.com/
TSSOP 16 Pin Assignments (Top View)
SSOP 10 Pin Assignments (Top View)
Rev.1.1
Copyright@2010 by Beken Corporation
BK1085
Beken Confidential. Information contained herein is covered under non-disclosure agreement (NDA).
1 Page 2 Functional Description
BK1085
Figure1. Functional Block Diagram
2.1 Power Supply
The BK1085 integrated a regulator
which supplies power to the chip. The
external supply voltage range is 2.5- 3.6
V.
2.2 Power Down and Reset
BK1085 has already integrated the
power on reset circuit inside. The chip
power on/down is controlled by
programming or pin PWD.
2.3 Pre-emphasis
Pre-emphasis time constant: 50us/75us,
it can be selected through SEL pin (0: 50
us, 1: 75 us).
http://www.DataSheet4U.com/
2.4 Stereo Encoder
The stereo encoder is based on signal
processing to encode analog stereo audio
input signal and generate a composite
FM signal with main, sub and pilot
signal from the reference clock.
2.5 Channel Number
The BK1085 can select different channel
frequency through setting the high level
or low level of the channel selection pins.
This function is only full available for
QFN package chips.
Rev.1.1
Proprietary and Confidential
Page 3 of 20
3Pages BK1085
3 Design Specification
3.1 Recommended Operating Conditions
Table 2 Recommended Operating Conditions
Parameter
Symbol Min Typ Max Unit
Analog Supply Voltage
Digital Supply Voltage1
VA
VD
2.5 3.3 3.6 V
2.5 3.3 3.6 V
Interface Voltage Range VIO
2.5
3.6 V
Supply Current
IA - 15 - mA
Audio input level
VIN-A
- - -10 dBV
Audio input frequency range fIN-A
200 - 15k Hz
Ambient Temperature
Tamb
-40 27 85 ℃
3.2 DC Electrical Specification
Table 3 Absolute Maximum Ratings
Parameter
Input Voltage
Ambient Temperature
Symbol
VIN
Tamb
Min
-
-55
Typ
http://www.DataSheet4U.com/
-
-
Max
7
125
Unit
V
℃
3.3 Transmitter Characteristics
Table 4 Transmitter Characteristics
Parameter
Test Condition Min Typ Max Unit
Frequency range
Output power
64 - 125 MHz
-16 - 101 dBm
Pre-emphasis time constant
50us, 75us
50,75
us
Audio SINAD
Mono
- 58 - dB
22.5 kHz Deviation
Stereo separation
- 36
- dB
L/R channel balance
- +/- 0.5 - dB
Notes:
1: Measured at 50 ohm loading ,and high output power configuration
Rev.1.1
Proprietary and Confidential
Page 6 of 20
6 Page | |||
ページ | 合計 : 20 ページ | ||
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PDF ダウンロード | [ BK1085 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
BK1080 | FM Receiver IC | BEKEN |
BK1081 | FM STEREO TRANSMITTER | Beken |
BK1085 | FM STEREO TRANSMITTER | Beken |
BK1086 | (BK1086 / BK1088) BROADCAST AM/FM/SW/LW RADIO RECEIVER | BEKEN |