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PDF KT0932M Data sheet ( Hoja de datos )
| Número de pieza | KT0932M | |
| Descripción | Monolithic Dial-tuned AM/FM Receiver | |
| Fabricantes | KTMicro | |
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Monolithic Dial-tuned AM/FM Receiver
Radio-on-a-Chip™
KT0932M
Features
Single-chip AM/FM radio solution
Built-in MCU
Support analog mechanical tuning
Worldwide FM/AM band support
Maximum two FM bands with configurable
frequency range within 32MHz-110MHz
Maximum two AM bands with configurable
frequency range within 500KHz -1750KHz
High Sensitivity
1.6uVEMF for FM
16uVEMF for AM
High Fidelity
SNR (FM/AM): 58dB/55dB(without weighting filter)
THD: 0.3%
Low Supply Current
28mA (operating)
Integrated tuning indicator
Programmable sensitivity and hysteresis threshold
Low supply voltage
2.1V 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
Small form factor SSOP16L package
RoHS Compliant
Applications
Desktop and portable radio, clock radio, MP3 speaker,
campus radio and other applications with mechanical
tuning.
Rev. 1.0
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.
FMAGC
FMINP
FMLNA
FM Mixer
ADC
VCO
LO syntehsizer
ADC
DAC
Class
AB
AOUT
AMINP
AMINN
AM LNA
AMAGC
VCO
AM Mixer
SysPLL
XTAL
MCU
Control Interface
KT0932M System Diagram
Description
The KT0932M is KT Micro’s latest generation of
proprietary fully integrated AM/FM receiver chip
supporting mechanical tuning without MCU. The new
features include improved tuning feel, new Tuning light
signal, improved EMI/EMC, improved FM flatness of
sensitivity.
Thanks to its advanced architecture, KT0932M offers an
excellent user listening experience with high sensitivity,
high signal-to-noise ratio, low distortion and low sensitivity
to interference.
KT0932M 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, KT0932M lowers the system cost,
simplifies design and improves product reliability and
manufacturability. KT0932M can operate with two AAA
batteries, making it ideal for low-power portable radio.
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 2013, Beijing KT Micro, Ltd.
1 page  
KT0932M
Table 4: AM Receiver Characteristics
(Unless otherwise noted Ta = -30~70℃, VDD= 2.1V to 3.6V)
Parameter
Symbol Test/Operating
Condition
Min Typ
AM Frequency Range
Sensitivity1,2
Audio Output Voltage1,2,3,4
Audio S/N1,2,3,4
Audio THD1,2,4
Frx 500
Sen (S+N)/N=26dB
15
32ohm load
190
55
0.3
Antenna inductance
L
360 -
Notes:
1. FMOD=1KHz
2. Modulation index is 30%
3. VEMF=1mV, Frx=500KHz~1750KHz
4. VOLUME<4:0>=11111
Max
1750
0.6
620
Units
KHz
uVEMF
mVRMS
dB
%
uH
Copyright 2013, Beijing KT Micro, Ltd.
5
5 Page 
KT0932M
KT0932M
CH
band1
band2
X
fbot 86 86.2
N guard
86.1
fbot 32 32.2
N guard
32.1
Variable Resistor
…...
230 channels
…...
320 channels
…...
Y
108.8 109 ftop
108.9
N guard
63.8 64 ftop
63.9
N guard
AVDD
Figure 2: CH pin connection in dial-mode
The bands can be changed by band-switch in dial-mode by setting register
SPAN_PIN<1:0> to b’10. The application circuit together with recommended resistor
values is shown in Figure 4.
EEPROM
SDA
AVDD
R1
AM2
AM1
FM2
FM1
R1
R2
R3
R4
R5
R2
R3
SPAN
KT0932M
SPAN
S1
R4
R5
10Kohm
255Kohm
82Kohm
47Kohm
30Kohm
Figure 4: SPAN pin connection in dial-mode
Copyright 2013, Beijing KT Micro, Ltd.
11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet KT0932M.PDF ] | |
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