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PDF KT0922 Data sheet ( Hoja de datos )
| Número de pieza | KT0922 | |
| Descripción | Monolithic Dial-tuned AM/FM Receiver | |
| Fabricantes | KTMicro | |
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Monolithic Dial-tuned AM/FM Receiver
Radio-on-a-Chip™
KT0922
Features
Single-chip AM/FM radio solution
Built-in MCU
Support analog mechanical tuning
Worldwide FM/AM band support
Maximum three FM bands with configurable
aitendofrequency range within 32MHz-110MHz
Configurable AM frequency range within 500KHz -
1710KHz
High Sensitivity
1.6uVEMF for FM
16uVEMF for AM
High Fidelity
SNR (FM/AM): 60dB/55dB
THD: 0.3%
Low Supply Current
25mA (operating)
<15uA (standby)
Integrated stereo indicator
Programmable sensitivity and hysteresis threshold
Integrated tuning indicator
Programmable sensitivity and hysteresis threshold
Low supply voltage
2.2V to 3.6V, can be supplied with 2 AAA batteries
Integrated low power crystal oscillator
Support 32.768KHz and 38KHz crystal
Arbitrary reference clock supported
From 30KHz to 40MHz with 1Hz step
One audio line-in channel
Small form factor SSOP20L package
RoHS Compliant
Applications
Desktop and portable radio, boom box, clock radio, MP3
speaker, campus radio and other applications with
mechanical tuning.
KT0922 System Diagram
Description
The KT0922 is KT Micro’s 2nd generation of proprietary
fully integrated AM/FM receiver chip supporting
mechanical tuning without MCU. The new features include
improved tuning feel, new ST and Tuning light signal,
improved EMI/EMC, improved FM stereo separation and
one audio line-in channel.
Thanks to its advanced architecture, KT0922 offers an
excellent user listening experience with high sensitivity,
high signal-to-noise ratio, low distortion and low sensitivity
to interference.
KT0922 provides direct and simple interface to support
mechanical tuning. A pre-programmed low cost EEPROM
can be used to configure the radio settings to differentiate
product designs and accommodate standards in various
regions. No external MCU is required.
Thanks to its high integration level and efficient user
interface design, KT0922 lowers the system cost, simplifies
design and improves product reliability and
manufacturability. KT0922 can operate with two AAA
batteries, making it ideal for low-power portable radio.
Rev. 1.2
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 Beijing KT Micro, Ltd.
Beijing KT Micro, Ltd.
BeiWu New Technology Park, Building #4, 23 BeiWuCun
Road, Haidian District, Beijing, China.
Tel: +86-10-88891955 http://www.ktmicro.com.cn
Fax: +86-10-88891977
Copyright 2012, Beijing KT Micro, Ltd.
www.aitendo.com
1 page  
2. Pin List
Pin Num
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Table 5: Pin list
Pin Name Description
VOL
Volume adjustment
CH
LINEL
LINER
aitendoROUT
Channel adjustment
Left channel line input.
Right channel line input.
Right channel audio output.
LOUT
Left channel audio output.
AVSS
Analog ground.
AVDD
Power supply
XI/RCLK Crystal input/Reference clock input
XO Crystal output
AMINN AM RF negative input.
AMINP AM RF positive input.
RFINP
FM RF input
RFGND RF ground.
LINE_EN Line input enable control.
DVSS
Digital ground.
ST Stereo indicator.
TUNING Tuning indicator.
AM_FM AM/FM switching control.
SPAN
Band switching control pin.
KT0922
Figure 1: KT0922 Pin assignment (Top view)
Copyright 2012, Beijing KT Micro, Ltd.
5
5 Page 
3.9. Register Bank
KT0922
aitendo
Copyright 2012, Beijing KT Micro, Ltd.
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet KT0922.PDF ] | |
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