|
|
PDF TK83361MTL Data sheet ( Hoja de datos )
| Número de pieza | TK83361MTL | |
| Descripción | NARROW BAND FM IF IC | |
| Fabricantes | TOKO | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TK83361MTL (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
|
No Preview Available !
FEATURES
n Wide Operating Voltage Range 2.0 to 8.0V
n RF Input Frequency up to 220 MHz
n Low Supply Current (2.8mA, squelch off, 3.8mA,
squelch on)
n Low External Component Count
n Excellent Limiting Sensitivity (-3dB = 8dBµ)
TK83361M
NARROW BAND FM IF IC
APPLICATIONS
n Amateur Radio Transceivers
n Cordless Phones
n Remote Controls
n Wireless Data Transceivers
n Battery Powered Devices
DESCRIPTION
The TK83361M is a narrow band FM IF IC designed for
cordless phones, radio transceivers, remote controls, wire-
less data transceivers, and other communication equip-
ment.
It integrates the mixer, oscillator, limiting amplifier, FM
demodulator, filter amplifier and squelch circuit into a single
surface mount SOP-16 package. The low operating cur-
rent combined with a minimum operating voltage of only 2
V makes this device ideal for battery powered devices.
The TK83361M offers improved performance over the
MC3361C. The operating frequency has been increased to
220MHz (vs. 60MHz) while reducing the supply current
from 5.2 mA to 3.8mA (squelch on). Offered in the SOP-16
surface mount package, the TK83361M is a drop-in re-
placement for the MC3361C.
TK83361M
OSC (B) 1
OSC (E) 2
MIXER OUT 3
VCC 4
IF INPUT 5
DECOUPLE 6
DECOUPLE 7
QUAD COIL 8
16 RF INPUT
15 GND
14 SCAN CONTROL
13 SCAN CONTROL
12 SQUELCH INPUT
11
FILTER AMP
OUTPUT
10 FILTER AMP
INPUT
9 AF OUTPUT
ORDERING INFORMATION
TK83361M
Tape/Reel Code
TAPE/REEL CODE
TL: Tape Left
December 2000 TOKO, Inc.
BLOCK DIAGRAM
OSC (B) 1
OSC (E) 2
OSC
MIXER
16 RF INPUT
GND 15 GND
MIXER OUT 3
VCC 4 VCC
SQUELCH
14 SCAN CONTROL
13 SCAN CONTROL
IF INPUT 5
12 SQUELCH INPUT
DECOUPLE 6
DECOUPLE 7
LIMIT
AMP
FILTER
AMP
10pF
QUAD COIL 8
QUAL DET
11
FILTER AMP
OUTPUT
10 FILTER AMP
INPUT
9 AF OUTPUT
Page 1
1 page  
TK83361M
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
OUTPUT LEVEL, TOTAL HARMONIC
DISTORTION vs. IF DEVIATION
FREQUENCY
600 6.0
500
VCC =4.0V
fIF = 455kHz
VIF = +80dBµ
fm = 1kHz
5.0
400 4.0
300 3.0
200
VO(DET)
2.0
100 1.0
THD
0 0.0
0 1 2 3 4 5 6 7 8 9 10
fdev., IF DEVIATION FREQUENCY
(kHz)
9 - 4. Filter Amplifer Section
GAIN vs. INPUT FREQUENCY
70
VCC = 4.0V
60
Vin = 0.3mV
R1 = 510Ω
Rf = 470kΩ
50
40
30
20
10
0
1k
1µF
+
11
Rf
1+µF
10
R1
10k
100k
1M
fin, FILTER AMPLIFIER INPUT
FREQUENCY (Hz)
9 - 5. Squelch Section
SCAN CONTROL vs. SQUELCH
INPUT VOLTAGE
4.0
SC
3.5
SC
3.0
2.5
2.0
1.5
1.0
0
.60
VCC = 4.0V
.65 .70 .75
.80
VSQ, SQUELCH INPUT VOLTAGE(V)
December 2000 TOKO, Inc.
OUTPUT LEVEL vs. IF MODULATION
FREQUENCY
RD =
±0 20kΩ
10kΩ
-10
5kΩ
-20
VCC
-30 VCC =4.0V
fIF = 455kHz
VIF = +80dBµ
RD
QUAD
COIL
-40
fdev = ±3kHz
Pin 9: open
8
100 1k
10k
100k
1M
fm, IF MODULATION FREQUENCY (HZ)
INPUT LEVEL RESPONSE
10
100
THD
1
VOUT
10.0
100m
10m
0.1
VCC = 4.0V
Fin = 10kHz
R1 = 510Ω
Rf = 470kΩ
1 10
Vin, INPUT LEVEL(mVrms)
1.0
0.1
100
Page 5
5 Page 
TK83361M
APPLICATIONS INFORMATION (CONT.)
(1) Using an External Oscillator Source
The circuit composition using an external OSC source is
shown in Fig. 4. When using an external OSC source
instead of the internal OSC, the local level must be injected
into Pin 1 by capacitor coupling.
In this case, Pin 2 must be open.
The local OSC operates as an emitter follower for a multi-
plier by opening Pin 2 and injecting into Pin 1.
Figure 4: External Injection
tor. It is easy to increase the drive current by connecting
resistor Re between Pin 2 and GND. Being short of drive
current, it makes gm increase to increase the drive current
by connecting external resistor Re. In that case, the amount
of drive current increase, Ie, is shown in Eq.(1).
Ie = VCC VBE = VCC 0.7
Re Re
(1)
VCC
50Ω
~
0.01µ
1
50Ω
open
2
RF
IF
(2) For 3rd Overtone mode
In general, a crystal oscillator can oscillate in the fundamen-
tal mode and overtone mode. For example, it is easy for a
30MHz-overtone crystal to oscillate at 10MHz, fundamental
mode. The reason is because the impedance of the funda-
mental mode is the same as the impedance of the overtone.
Therefore, it is necessary for the circuit to select the
overtone frequency by using a tuning coil.
How to oscillate a general 3rd overtone oscillator is ex-
plained. In the case of an overtone mode of 30MHz and
higher, using a crystal oscillator, we recommend the circuit
in Fig. 5 to suppress the fundamental mode oscillation.
In order to oscillate at the 3rd overtone frequency, the values
of C2, C3 and L (Fig.5) are selected. Fig.6 shows a 2-port
impedance response of the C2~C3~L loop network.
Regarding the condition of oscillation, the impedance char-
acteristic is capacitive at the vacinity of the overtone fre-
quency. It is reactive at the vicinity of the fundamental
frequency.
The condition of oscillation is as follows:
fOSC is between fa and fb,
3 x fOSC is fb and higher. Please see Fig.6
Figure 6: 2-port
Impedance Response of Resonance Network
+j
fOSC
fa fb
3 X fOSC
-j
Where:
fa: series resonant freq.
fb: parallel resonant freq.
fOSC: fundamental mode freq.
3 x fOSC:
3rd order overtone freq.
Equations of 3rd order overtone oscillation are shown below.
Figure 5: Overtone Mode Circuit
VCC
1
fa =
2π LxC2
, fb = fa
1+ C2
C3
(2)
X’tal
C2 L
C3
Re
1
C1
2
The following explains how to decide the circuit constants of
the overtone-crystal-oscillation fundamental circuit.
As the operating frequency increases the oscillation ampli-
tude decreases because of a shortage of gm of the oscilla-
The series value of the equivalent capacitance at the 3rd
order overtone freq. of this network, which is decided in the
above -mentioned, and the capacitance of C1 must be equal
to load capacitance CL.
Being short of negative resistance of the circuit, increase
the transistor’s bias current by decreasing Re. It is able to
decide the OSC level for minute adjusting Re. Please refer
the most suitable OSC level range to 12dB SINAD sensitiv-
ity versus local OSC input signal level in TYPICAL PER-
FORMANCE CHARACTERISTICS. The saturating range
is the most suitable OSC level range. It is comparatively
easy to decide the circuit constant by examining it with a
network analyzer.
December 2000 TOKO, Inc.
Page 11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet TK83361MTL.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TK83361MTL | NARROW BAND FM IF IC | TOKO |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |