Ordering number : ENN6017
32400TN (OT) No. 6017-1/8
Functions
IF amplifier
Quadrature detector
Signal meter
SD
IF buffer
Features
Low-voltage operation (1.8 V or higher)
Supports electronic tuning systems (provides built-in SD
output and IF count output functions)
FM detector circuit accepts an even wider input
frequency range. (Supports the use of an external phase
capacitor.)
Miniature package: MFP-10S
Package Dimensions
unit: mm
3086A-MFP10S
1
10
5
6
0.55
1.8
max
1.0
0.35
5.1
0.15
6.4
1.5
0.1
4.4
5.15
0.625
SANYO: MFP10S
[LA1225M]
LA1225M
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
FM IF Detector IC
Monolithic Linear IC
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
9.0
V
Allowable power dissipation
Pd max
Ta
80C
100
mW
Operating temperature
Topr
20 to +80
C
Storage temperature
Tstg
55 to +150
C
Specifications
Maximum Ratings
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V
CC
3.0
V
Operating supply voltage range
V
CC
op
1.8 to 8.0
V
Operating Conditions
at Ta = 25C
No. 6017-2/8
LA1225M
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Current drain
I
CCO
No input
3.0
4.0
5.0
mA
Demodulator output
V
O
100 dB, 100% mod., fm = 1 kHz
70
150
220
mV
Total harmonic distortion
THD
100 dB, 100% mod., fm = 1 kHz
0.5
0.8
%
Signal-to-noise ratio
S/N
100 dB, 100% mod., fm = 1 kHz
65
73
dB
3 dB sensitivity
3 dBL.S
100 dB, 100% mod.,
19
28
37
dB
fm = 1 kHz output reference, when the input is 3 dB
SD sensitivity
SD
ON
0% mod.
35
50
65
dB
IF counter buffer output
V
IFBuff
100 dB
90
130
170
mV
Operating Characteristics
at Ta = 25C, V
CC
= 3.0 V, fc = 10.7 MHz
Pin Functions and No-Signal Voltage
at V
CC
= 3.0 V
Pin No.
Function
Notes
No-signal voltage (V)
Equivalent circuit
Input impedance
R
IN
= 330
1.2
1
IF input
1
2
RIN
A11506
Vreg = 1.2 V
1.2
2
Reg
2
A11507
0
3
GND
Open collector output
The SD sensitivity can be adjusted
with an external resistor
connected to this pin.
0.1
4
S-meter output
4
A11508
3.0
5
V
CC
Output impedance
R
OUT
= 3 k
1.5
6
Demodulated output
6
ROUT
A11509
Continued on next page.
No. 6017-3/8
LA1225M
Continued from preceding page.
Pin No.
Function
Notes
No-signal voltage (V)
Equivalent circuit
The detector coil is inserted
between pin 7 and pin 5 (V
CC
).
3.0
7
DET
7
A11510
Pin 8 and pin 7 (DET) are
connected through a capacitor.
2.8
8
Limiter amplifier output
8
A11511
The IF buffer output is turned on
when the voltage applied to the
pin is the recommended 1.5 V or
higher.
0
9
IF buffer
(Also used for control SW)
9
A11512
Control SW
IF buffer output
This is an active-low output.
This is an open-collector output
and can directly drive an LED.
(I
C
max = 20 mA)
1.6
10
SD
10
A11513
Block Diagram
No. 6017-4/8
LA1225M
+
1
10
2
9
3
8
4
7
5
6
+
+
Reg
SD
IF Amp
IF Buff
GND
S-METER
V
CC
DET
FM IF IN
V
SM
V
CC
DET OUT
IF Buff
STRQ
SD
A11514
Sample Application Circuit
No. 6017-5/8
LA1225M
+
1
10
2
9
3
8
4
7
5
6
+
+
FM IF IN
V
SM
V
CC
= 3.0V
IF Buff
STRQ
SD
A11515
LA1225M
75
330
0.047
F
10
F1
F
100
F
0.015
F
DET OUT
0.047
F
15k
0.047
F
DETcoil;
YT-30103
3.9k
2pF
1000pF
10k
3.0V
3.3k
0.047
F
No. 6017-6/8
LA1225M
80
100
60
40
20
0
0
20
40
60
80
100
120
140
1
0
2
3
4
5
0.5
0
1
1.5
2
2.5
0
20
40
60
80
100
120
140
25
30
20
15
10
5
0
0
2
4
6
8
10
60
50
70
80
90
100
0
2
4
6
8
10
1
0
2
3
4
5
0
2
1
4
3
6
5
8
9
7
10
10
15
5
0
20
25
30
35
40
45
50
0
1
2
3
4
5
6
7
8
9
10
100
60
80
120
140
160
180
200
220
0
1
2
3
4
5
6
7
8
9
10
I/O Characteristics
Signal
Noise
AM out
V
CC
=3.0V
f
C
=10.7MHz
fm=1kHz, 75kHzdev
Total harmonic distortion, THD -- %
Output -- dBm
S-meter voltage, V
SM
-- V
I/O Characteristics
V
SM
THD
Output voltage, V
O
-- dBm
V
O
-- V
CC
Supply voltage, V
CC
--
V
Input -- dB
Input -- dB
V
IN
=100dB
f
C
=10.7MHz
fm=1kHz, 75kHzdev
V
IN
=100dB
f
C
=10.7MHz
fm=1kHz, 75kHzdev
V
IN
=100dB
f
C
=10.7MHz
fm=1kHz, 75kHzdev
Signal-to-noise ratio, S/N -- dB
S/N -- V
CC
Supply voltage, V
CC
--
V
THD -- V
CC
Supply voltage, V
CC
--
V
Supply voltage, V
CC
--
V
Supply voltage, V
CC
--
V
Supply voltage, V
CC
--
V
Total harmonic distortion, THD -- %
IF counter buffer output, V
IFBuff
-- mV
SD
ON
-- dB
Sensitivity (3 dB LS, Q
S
) -- dB
V
IFBuff
-- V
CC
SD
ON
-- V
CC
V
CC
=3.0V
f
C
=10.7MHz
fm=1kHz, 75kHzdev
20
30
10
0
40
50
60
70
80
90
100
0
1
2
3
4
5
6
7
8
9
10
3dBLS, Q
S
-- V
CC
V
IN
=100dB
f
C
=10.7MHz
fm=1kHz, 75kHzdev
f
C
= 10.7 MHz
unmodulated
V
IN
=100dB
f
C
= 10.7 MHz
unmodulated
Q
S
L
S
No. 6017-7/8
LA1225M
60
50
70
80
90
100
40
20
0
20
40
60
80
100
1
0
2
3
4
5
40
20
0
20
40
60
80
100
40
30
50
60
70
80
40
20
0
20
40
60
80
100
Signal-to-noise ratio, S/N -- dB
S/N -- Ta
2
1
3
4
5
6
0
2
4
6
8
10
Quiescent current, I
CCO
-- mA
I
CCO
-- V
CC
Quiescent current, I
CCO
-- mA
I
CCO
-- Ta
Supply voltage, V
CC
-- V
Total harmonic distortion, THD -- %
THD -- Ta
Ambient temperature, Ta --
C
Ambient temperature, Ta --
C
Ambient temperature, Ta --
C
SD
ON
-- dB
Sensitivity (3 dB LS, Q
S
) -- dB
SD
ON
-- Ta
10
0
20
30
40
50
40
20
0
20
40
60
80
100
3dBLS, Q
S
-- Ta
Ambient temperature, Ta --
C
40
20
0
20
40
60
80
100
Ambient temperature, Ta --
C
40
20
0
20
40
60
80
100
Ambient temperature, Ta --
C
3dBLS
Q
S
V
CC
=3.0V
V
IN
=100dB
f
C
=10.7MHz
fm=1kHz, 75kHzdev
V
CC
=3.0V
V
IN
=100dB
f
C
=10.7MHz
fm=1kHz, 75kHzdev
10
8
6
4
2
0
2
4
6
8
10
V
CC
=3.0V
V
IN
=100dB
f
C
=10.7MHz
(25
C=0dB)
2
1
3
4
5
6
V
CC
=3.0V
25
20
30
15
10
5
0
40
20
0
20
40
60
80
100
V
O
-- Ta
Ambient temperature, Ta --
C
V
CC
=3.0V
V
IN
=100dB
f
C
=10.7MHz
fm=1kHz, 75kHzdev
V
CC
=3.0V
V
IN
=100dB
reference
f
C
=10.7MHz
fm=1kHz, 75kHzdev
V
CC
=3.0V
f
C
=10.7MHz
unmodulated
Output voltage, V
O
-- dBm
IF counter buffer output, V
IFBuff
-- dB
V
IFBuff
-- Ta
PS No. 6017-8/8
LA1225M
This catalog provides information as of March, 2000. Specifications and information herein are subject to
change without notice.
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer's
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer's products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
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