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PDF KT0830E Data sheet ( Hoja de datos )
| Número de pieza | KT0830E | |
| Descripción | Stereo FM Receiver | |
| Fabricantes | KTMicro | |
| Logotipo |  |
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Stereo FM Receiver
Radio-on-a-Chip™
KT0830E
Features
Low-cost true single-chip FM radio solution
Single-Chip Low IF FM Receiver
Direct band, volume, frequency selection
Digital FM Demodulator
Digital Stereo Processor
Low-noise PLL with integrated VCO
Extended FM band support (64-109MHz)
Integrated Class AB headphone driver
High Fidelity
SNR: 64dB
THD: <0.3%
High Sensitivity: -106dBm
Low supply current
19.5mA (operating), <20uA (standby)
High Driving capability
Drive up to 16 ohm load (single-sided)
32.768kHz reference clock/crystal
Automatic Frequency Control (AFC)
Automatic gain control (AGC)
Anti-pop circuit
16-pin SOP package
Applications
Single chip FM radio used in PMP, boom box,
sporting devices, medical devices and etc
Figure 1: System Diagram
Description
The KT0830E is a high-quality Monolithic Digital FM
Receiver designed to playback high-fidelity FM broadcasting
signals under various conditions.
The KT0830E offers a true single-chip FM radio solution.
There are no external filters or frequency-tuning devices
thanks to a proprietary digital low-IF architecture, a fully-
integrated LNA, automatic gain control (AGC), high-
performance ADCs, high-quality analog and digital filters, and
an on-chip low-noise self-tuning VCO. The on-chip high-
fidelity Class-AB driver further eliminates the need for any
external audio amplifiers and can drive stereo headphones
directly.
The on-chip LDO regulator allows the chip to operate with
power supply ranging from 1.8 V to 3.6V consuming merely
19mA in full operation mode and less than 20uA when standby
– greatly extending the battery life.
The small footprint, high integration level and great flexibility
make KT0830E for any standalone FM radio applications.
Rev. 1.1
Information furnished by KT Micro is believed to be accurate and reliable.
However, no responsibility is assumed by KT Micro for its use, nor for any
infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any
patent or patent rights of KT Micro, Inc.
KT Micro Inc., 22391 Gilberto, Suite D
Rancho Santa Margarita, CA 92688
Tel: 949.713.4000 http://www.ktmicro.com.cn
Fax: 949.713.4004 Copyright ©2009, KT Micro, Inc.
Free Datasheet http://www.datasheet4u.com/
1 page  
KT0830E
3 Functional Description
3.1 Overview
The KT0830E offers a true single-chip FM radio solution by virtually eliminating all
the external components. There are no external filters or frequency-tuning devices
thanks to a proprietary digital low-IF architecture, a fully-integrated LNA, automatic
gain control (AGC), high-performance ADCs, high-quality analog and digital filters,
and an on-chip low-noise self-tuning VCO. The on-chip high-fidelity Class-AB
driver further eliminates the need for any external audio amplifiers and can drive
stereo headphones directly.
3.2 FM Receiver
A high performance digital-IF structure receiver is used in KT0830E to convert RF
signal to IF signal. The received IF signal is digitized by a high resolution analog to
digital converter (ADC) and all the following signal processing including channel
filtering, FM demodulation, stereo decoding is performed digitally. In order to
improve the dynamic range of the RF signal, an automatic gain control (AGC) loop
is used together with the low noise amplifier (LNA). KT0830E also provides
configurations for various types of antenna such as short antenna, long antenna or
headphone (audio wire) antenna through register ANTTYP<1:0>.
3.3 Digital Signal Processing
3.3.1 Stereo Decoder
The digitized IF signal is fed to the FM demodulator which demodulates the signal
and outputs a digital multiplexed (MPX) signal consisting of L+R audio, L-R audio,
19kHz pilot tone. The left channel signal and the right channel signal can be
extracted from the MPX signal by simply adding and subtracting the L+R signal
and L-R signal. The spectrum diagram is shown in Figure 3.
Figure 3: Spectrum diagram of the MPX signal
Copyright ©2009, KT Micro, Inc.
5
Free
Datashee
5 Page 
KT0830E
5.4 TUNE Register (Reg 0x03)
Bit Symbol
15 Tune
Access Default
RW 0
14 Reserved
0
Functional Description
Tune Enable
0 = Disable
1 = Enable
13 AUTOVOL_EN RW
12 AUTOTUNE RW
0
1
11:10 Reserved
10
Automatic Volume Control
1 = enable
Automatic tune control
0 = Will NOT tune after a successful
seek until a separated Tune command is
received from the control interface
1 = Automatically starts Tune process
after Seek
9:0 Chan<9:0>
RW 1CC Tune Channel Value
5.5 VOLUME Control Register (Reg 0x04)
Bit Symbol
15 SMUTE_B
14 MUTE_B
13:12 SMUTER<1:0>
11:10 SMUTEA<1:0>
9:8 BASS<1:0>
7:6 Reserved
Access
RW
RW
RW
RW
RW
Default
1
0
00
00
00
00
Functional Description
Softmute Disable
0 = Softmute enable
1 = Softmute disable
Hard Mute Disable
0 = Mute enable
1 = Mute disable
Softmute Attack/Recover Rate
0 = Slow
01 = Slowest
10 = Fastest
11 = Fast
Softmute Attenuation
00 = Strong
01 = Strongest
10 = Weak
11 = Weakest
Bass boost effect mode selection
00 = Disable
01 = Low
10 = Med
11 = High
Copyright ©2009, KT Micro, Inc.
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
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| PDF Descargar | [ Datasheet KT0830E.PDF ] | |
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