TAN-326
2002-02-14
1
Tentative Data Audio IC Applicat ion Circuit
TAN-326
Example of 3-V FM Radio Circuit
TA2111FN + TC9418FN Compact Module
1. Outline
This is an application example of a compact FM radio circuit targeting such products as mobile phones, portable
terminals, notebook PCs, and MP3 players.
The TA2111FN is a 24-pin IC incorporating an FM front-end, FM IF amp detector, and stereo decoder. The
TC9418FN is a 3-V PLL IC which can handle input of up to 230 MHz.
2. Ratings
Characteristic Rating Unit
Supply volt age 3 V
Current dissi pation (quiescent) 21 mA
Signal frequency range 87.5~108 MHz
Intermedi ate f requency 10.7 MHz
Sensitivity 14 (S/N = 30dB) dBmV EMF
3. Usage Precautions
1) Software specifications
At normal reception, set OUT-4 to Low output. At IF count (seek), set OUT-4 to Hz output.
VT
FM
F/E
IF, DET
STEREO
R
PLL
VCO
IF
LGND BUS
VT
VCC
TA2111FN TC9418FN
Preliminar
y
TAN-326
2002-02-14 2
Example of 3-V FM radio circuit
Vtune power supply 3 V-B
330 W
13
14
15
16
17
18
19
20
21
22
12
11
10
9
8
7
6
5
4
3
23
24
2
1
R-OUT QUOD
L-OUT STLED
LPF1 TULED
LPF2 GND
MPXIN FMIF
DETO AMIF
AFC VCC
AMOSC AGC
FMOSC MIXOUT
RFVCC AMLCUT
FMRFOUT RFGND
AMRF FRFin
BPF
GND3 L-ch3 V-A
1 kW
TA2111FN
XIN INH
XOUT DO1
VXT DO2
DOUT VDD
DIN AMIN
CK FMIN
CE GND
TEST IFIN
I/O-1 OUT-4
I/O-2 OUT-3
I/O-3 OUT-2
I/O-4 OUT-1
12 13
2.2 kW
22 pF
75 kHz
2.2 kW
2.2 kW
1
2
3
4
5
6
7
8
9
10
24
23
22
21
20
19
18
17
16
15
TC9418FN
11 14
22 pF
0.47 mF
2.2 kW
DOUT
DIN
C
K
CE
1 kW
1000 pF
2SC2712
1 kW
10 mF
0 W
JP
Jumper
10 mF
3.3 kW
0.033 mF
0.01 mF2SC2714
47 kW
47 pF
2.2 kW
0.033 mF
0.015 mF
4.7 mF
R-ch
4.7 mF
0.015 mF
CDACV
10M7GA
077-R0
SFECS10M7
FA00-R0
0.01 mF
GND1 ANT.
0.022
m
F
0.033 mF
P657AN-1606
6 pF
15 kW
2700 pF
KV1770
1000 pF
2700 pF
15 kW
0.033 mF
P657AN-1607BIT
3 pF
15 kW
2700
p
F
KV1770
6800 pF
2700 pF
15 kW
330 pF
4.7 mF
0.1 mF
0.022 mF
3.3 kW 0.1 mF
2700 pF
10 pF
51 kW
8 pF
2SC2714
0.01 mF
510 W
15 pF
10 kW
GND2
GFMB1
0.01 mF
R8 JP2
C6
C32
C33
R6 R7 TR1
TR2
C5
C3
C4
C1
C2
C34
X1
R1
R2
R3
R4
R5
TR3
R10
R11
C7
C29
C31
C30
C28
FT3
R18
C27
C26
FT2
FT1
R13 C10
C11
C12
C35
C13
C14
C37
R19
C8
TR4 R12
C36 C9
L1
C17
C15
R14
D2
C19
R15
C18
C16
L2
C20
R16
D1
R17
C23
C24
C22 C25
C21
R9
P657AN-1606 :
P657AN-1607BIT : TOKO, inc.
KV1770 :
CDACV10M7GA077-R0 :
SFECS10M7FA00-R0 : Murata Co., Ltd.
TAN-326
2002-02-14
3
Coil specifications
Turns
No. Stage f
(Hz) L
(mH) CO
(pF) QO 1-2 2-3 1-3 4-6 Wire Note
L1 FM RF 100 M 80 31.5 64 ¾ ¾ 3 ¾ P657AN-1606 (Red)
L2 FM OSC 100 M 68 37 64 ¾ ¾ 3 ¾ P657AN-1607BIT
(Black)
(T) : Toko, inc
Pin connection (bottom view)
Parts List
No. Symbol Parts Name No. Symbol Parts Name
1 IC1 TA2111FN 23 R14, 15, 16, 17 ERJ2GEJ153X
2 IC2 TC9418FN 24 R19 ERJ2GEJ511X
3 FT2 SFECS10M7FA00-R0 25 JP, JP2 ERJ2GE0R00X
4 FT3 CDACV10M7GA077-R0 26 C3, 18, 23, 27 CM05Y5V333Z16AT
5 TR2 2SC2712GRTE85R 27 C4, 6, 8, 26 CM05W5R103K16AT
6 R18 ERJ2GEJ331X 28 C5, 24 CM05W5R102K50AT
7 C1, 2 CM05CH220J50AT 29 C7 CM05CH470J50AT
8 C32 TMCMB1C106MTR 30 C9 CM05CH100D50AT
9 L1 5CBM P657AN-1607BIT 31 C10, 12 CM05Y5V104Z16AT
10 L2 5CBM P657AN-1606 32 C11, 25 CM05Y5V223Z25AT
11 D1 KV1770 33 C13 CM05W5R331K50AT
12 X1 DT-261 75 kHz 34 C14, 16, 17, 21,
22 CM05W5R272K50AT
13 FT1 GFMB1 35 C15 CM05CH030C50AT
14 TR1 2SC2712GRTE85R 36 C19 CM05W5R682K25AT
15 TR3, 4 2SC2714YTR85R 37 C20 CM05CH060D50AT
16 D2 KV1770 38 C28, 29 CM05W5R153K16AT
17 R1 ERJ2GEJ103X 39 C36 CM05CH080D50AT
18 R2, 3, 4, 5, 11 ERJ2GEJ222X 40 C37 CM05CH150J50AT
19 R6, 7, 9 ERJ2GEJ102X 41 C30, 31, 35 TMCMA1C475MTR
20 R8, 13 ERJ2GEJ332X 42 C33 TMCMB1C106MTR
21 R10 ERJ2GEJ473X 43 C34 TMCMA1E474MTR
22 R12 ERJ2GEJ513X
Note: Chip C and R can change to other company’s similarity products.
L1, L2
TAN-326
2002-02-14
4
Printed Circuit Board Pattern Examples
This module consists of a four-layer PCB. The patterns for the first and the fourth layers are shown below as
examples.
Component-mounting surface
IC-mounting surface Chip-mounting surface
Pattern layout
IC-mounting surface Chip-mounting surface
TAN-326
2002-02-14
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Separation (dB)
Output level (dB)
Output level (dB)
THD (%)
Detuning frequency Df (kHz)
VOD, THD – Df
Level (dB)
Signal fre qu enc y (MHz)
Sensitivi t y, image ratio – frequency
Usable sensitivity, limiting sensitivity (dBmV EMF)
Image rati o (dB)
THD (%)
Input signal level Vin (dBmV EMF)
Output, AMR, Noise, THD – Vin
Output level (dB)
THD (%)
Input signal level Vin (dBmV EMF)
Output, AMR, Nois e, THD – Vin
THD (%)
Input signal level Vin (dBmV EMF)
Output, AMR, Noise, THD – Vin
THD (%)
fm (Hz)
Response, Separation, THD – fm
Response (dB) 0dB = 265 mVrms (L, Rch)
-30
-400
1.0
-300 -200 -100 98 MHz 100 200 300 400
-20
-10
0
2.0
3.0
4.0
±22.5 kHz
±75 kHz
VCC = 3 V
fm = 400 Hz
0dB = 80 mVrms
Vin = 60dBmV EMF
0
86 90 94 98 102 106 108
10
20
30
40
Limiting sensitivity (-3dB)
Usable sensitivity (S/N = 30dB)
VCC = 3 V
MOD = ±22.5 kHz
fm = 400 Hz
BW = 400 Hz~30 kHz
Image ratio (VO = 20 mVrms)
-80
-20 0 20 40 60 80 100 120
-60
-40
-20
0
THD
±22.5 kHz
Signal
AMR
MOD 30%
fm = 400 Hz
±75 kHz
Noise (400 Hz~30 kHz)
~30 kHz
VCC = 3 V
fm = 400 Hz
VT = 1.79 V
0dB = 80 mVrms
98 MHz ± 22.5 kHz
BW = 400 Hz~30 kHz
ICC = 23 mA
1
2
3
4
-80
-20 0 20 40 60 80 100 120
-60
-40
-20
0
THD
Signal
AMR
MOD 30%
fm = 400 Hz
±75 kHz
Noise (400 Hz ~30 kHz)
~30 kHz
VCC = 3 V
fm = 400 Hz
VT = 1.03 V
0dB = 80 mVrms
87.5 MHz ± 22.5 kHz
BW = 400 Hz~30 kHz
ICC = 24 mA
±22.5 kHz
1
2
3
4
-80
-20 0 20 40 60 80 100 120
-60
-40
-20
0
THD
±22.5 kHz
AMR
MOD 30%
fm = 400 Hz
±75 kHz
VCC = 3 V
fm = 400 Hz
VT = 2.39 V
0dB = 80 mVrms
108 MHz ± 22.5 kHz
BW = 400 Hz~30 kHz
Signal ICC = 23 mA
Noise (400 Hz ~30 kHz)
~30 kHz
1
2
3
4
-30
-20
-10
0
10
20
1
40 100 200 400 1 k 2 k 4 k 10 k
2
3
4
5
20
30
40
50
THD
Separation
Response
VCC = 3 V, fm = EXT
Vin = 60dBmV EMF
98 MHz ± 75 kHz
0.022 mF
0.1 mF 3.3 kW
VCC
0.1 mF
LPF constant
: Lch, L ® R
: Rch, R ® L
20 k
TAN-326
2002-02-14
6
· TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are us ed wi thin specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc. .
· The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic applianc es,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer’s own risk.
· The products described in this docum ent are subject to the foreign exchange and foreign trade laws.
· The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other
rights of the third parties which may result from its use. No license is granted by implication or otherwise under
any intellectual property or other rights of TOSHIBA CORPORATION or others.
· The information contained herein is subject to change without notice.
000707EB
A
RESTRICTIONS O N PRODUCT USE
