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TA7358P LINEAR INTEGRATED CIRCUIT
FM FRONT-END
DESCRIPTION
The Contek TA7358P is designed for a FM front-end
application, which is suitable to a portable radio or a radio
cassette. Comparing with conventional types, supply voltage
dependence, overload characteristics and spurious radiation
characteristics are improved.
FEATURES
*Excellent supply voltage dependence of local oscillator:
oscillator stop Vcc=0.9V(typ)
*Improved inter-modulation characteristics by double
balanced type mixer circuit
*Low spurious radiation
*Wide operating voltage range( 1.6V to 6V)
BLOCK DIAGRAM
To IF AM P.
SIP-9
Vcc
64
Buffer AMP.
Bias
52
Local
Oscillator
REG
Contek
8
7
Input
B.P.F
3 9
RF AMP. Mixer
1
ABSOLUTE MAXIMUN RATINGS(Ta=25 C)
PARAMETER SYMBOL VALUE UNIT
Supply Voltage VCC 8V
Power Dissipation PD 500 MW
Operating Temperature Topr -25 ~ 75 C
Storage Temperature Tstg -55 ~ 150 C
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
1
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TA7358P LINEAR INTEGRATED CIRCUIT
ELECTRONIC CHARACTERISTICS(Ta=25 C, Vcc=5V, f=83MHz, fm=1kHz, Df=22.5kHz, unless
otherwise specified)
PARAMETER SYMBOL TEST CIRCUIT TEST CONDITIONS MIN TYP MAX UNIT
Quiescent Current IQ VIN=0 5.2 8 mA
-3dB Limiting Sensitivity VIN(lim) 2 -3dB 3 7 dBm
Quiescent Sensitivity Qs(dBm)2 11 dBm
Conversion Gain Gc 31 dB
Local OSC Voltage Vosc 1 fosc=60MHz 90 165 220 mVrms
Pin 1 Parallel
Input
Resistance
Impedance Parallel
Output
Resistance
Pin 3 Parallel
Input
Resistance
Impedance Parallel
Output
Resistance
Pin 4 Parallel
Input
Resistance
Impedance Parallel
Output
Resistance
Pin 6 Parallel
Input
Resistance
Impedance Parallel
Output
Resistance
Local OSC Stop
Voltage
Rip1
3
Cip1 pF
Rip3
3 f=83MHz
Cip3 2 pF
Rip4
3
Cip4 3.3 pF
Rip6
3 f=10.7MHz
Cip6 4.8 pF
VSTOP 1 0.9 1.3 V
57 W
25 W
2.7 W
100 W
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
2
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TA7358P LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT 1
Contek
TA7358P
1 2 3 4 5 6 7 8 9
fVCO
TEST CIRCUIT 2
B.P.F
BPW B5
Input
FM SG
~
W
Zo=75
30kW
Contek
1 2 3 4 5 6 7 8 9
22pF 15pF
TA7358P
4.7pF
1000pF
T1 T2
15pF
200W
0.01mF
100 mF
Vcc GND
20pF 0.01 mF
T2
62pF
C.F.
T3
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
0.01 m F
0.047 mF
47kW
0.01 mF
0.01 mF
Contek
TA7640AP
22mF22mF
VOSC
GND
Vcc
T4
0.015 mF
GND
Vcc=5V
1 mF
100 mF
VOD
V.V
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
3
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TA7358P LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT 3
(a) R
(c) R
ip1
RX
METER
ip4 ,C ip4
RX
METER
0.01
mF
0.01 m F
Vcc
Vcc
3
6
H
L
F
m
0.01
H
L
F
m
0.01
Contek TA7358P
5
3
6
5
91
2
1000pF
94
2
1000pF
(b) R
(d) R
OP3 ,C OP3
RX
METER
OP6 ,C OP6
RX
METER
H
L
H
L
TEST CIRCUIT COIL DATA
COIL fo Qo TURNS CAPACITANCE
T1
RF COIL 100MHz 100 0.7mmF ,2.25T
Center Tap
T2
OSC COIL 100MHz 100 0.7mmF,2.5T 15pF
6
93
Contek
TA7358P
2
5
F
m
1000pF
0.01
3
69
Contek TA7358PContek TA7358P
2
5
F
m
1000pF
0.01
15pF
7mm
7mm
0.01
mF
0.01 m F
Vcc
Vcc
5.0mm
T3
IFT 10.7MHz 115 (1) ~ (3) 2T
(4) ~ (6) 1T
F0.12mm
T4
QUAD COIL 10.7MHz 150 (4) ~ (6) 14T
F0.12mm
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
75pF
47pF
5.0mm
1
6
2
4
3
1
6
2
4
3
4
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