SANYO LA1225M

Ordering number : ENN6017
Monolithic Linear IC
LA1225M
FM IF Detector IC
Functions
Package Dimensions
•
•
•
•
•
unit: mm
IF amplifier
Quadrature detector
Signal meter
SD
IF buffer
3086A-MFP10S
10
0.625
[LA1225M]
6
4.4
• 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
5.15
6.4
Features
1.8 max
5
1
0.15
0.1
1.5
5.1
0.35
1.0
0.55
SANYO: MFP10S
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Symbol
Conditions
Ratings
VCC max
Allowable power dissipation
Pd max
Ta ≤ 80°C
Unit
9.0
V
100
mW
Operating temperature
Topr
–20 to +80
°C
Storage temperature
Tstg
–55 to +150
°C
Ratings
Unit
Operating Conditions at Ta = 25°C
Parameter
Symbol
Recommended supply voltage
VCC
Operating supply voltage range
VCC op
Conditions
3.0
V
1.8 to 8.0
V
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.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
32400TN (OT) No. 6017-1/8
LA1225M
Operating Characteristics at Ta = 25°C, VCC = 3.0 V, fc = 10.7 MHz
Parameter
Current drain
Symbol
ICCO
Ratings
Conditions
min
typ
Unit
max
No input
3.0
4.0
5.0
mA
VO
100 dBµ, 100% mod., fm = 1 kHz
70
150
220
mV
Total harmonic distortion
THD
100 dBµ, 100% mod., fm = 1 kHz
0.5
0.8
Signal-to-noise ratio
S/N
100 dBµ, 100% mod., fm = 1 kHz
65
73
100 dBµ, 100% mod.,
fm = 1 kHz output reference, when the input is –3 dB
19
28
Demodulator output
3 dB sensitivity
–3 dBL.S
%
dB
37
dBµ
SD sensitivity
SDON
0% mod.
35
50
65
dBµ
IF counter buffer output
VIFBuff
100 dBµ
90
130
170
mV
Pin Functions and No-Signal Voltage at VCC = 3.0 V
Pin No.
Function
Notes
No-signal voltage (V)
Equivalent circuit
1
Input impedance
1
IF input
RIN = 330 Ω
1.2
RIN
2
A11506
2
Reg
Vreg = 1.2 V
1.2
2
A11507
3
GND
0
Open collector output
4
S-meter output
The SD sensitivity can be adjusted
with an external resistor
connected to this pin.
0.1
4
A11508
5
VCC
6
Demodulated output
3.0
Output impedance
ROUT = 3 kΩ
1.5
ROUT
6
A11509
Continued on next page.
No. 6017-2/8
LA1225M
Continued from preceding page.
Pin No.
Function
Notes
No-signal voltage (V)
Equivalent circuit
7
7
DET
The detector coil is inserted
between pin 7 and pin 5 (VCC).
3.0
A11510
8
8
Limiter amplifier output
Pin 8 and pin 7 (DET) are
connected through a capacitor.
2.8
A11511
9
IF buffer output
9
The IF buffer output is turned on
when the voltage applied to the
(Also used for control SW) pin is the recommended 1.5 V or
higher.
IF buffer
0
Control SW
A11512
10
This is an active-low output.
10
SD
This is an open-collector output
and can directly drive an LED.
(ICmax = 20 mA)
1.6
A11513
No. 6017-3/8
FM IF IN
SD
1
IF Buff
SD
2
+
Reg
IF Amp
9
10
STRQ
IF Buff
3
GND
8
4
+
S-METER
7
VSM
DET
5
+
VCC
6
DET OUT
A11514
VCC
LA1225M
Block Diagram
No. 6017-4/8
FM IF IN
75Ω
330Ω
0.047 µF
SD
+
2
1
0.047 µF
9
3.0V
STRQ
10
10 µF
3.3kΩ
0.047 µF
1000pF
10kΩ
8
3
+
2pF
1 µF
LA1225M
IF Buff
3.9kΩ
4
7
15kΩ
100 µF
VSM
DETcoil;
YT-30103
5
6
+
0.047 µF
0.015 µF
DET OUT
A11515
VCC = 3.0V
LA1225M
Sample Application Circuit
No. 6017-5/8
LA1225M
I/O Characteristics
I/O Characteristics
Signal
Output — dBm
–20
–40
–60
–80
AM out
VCC=3.0V
fC=10.7MHz
fm=1kHz, 75kHzdev
–100
0
Noise
40
20
60
80
100
120
4
2.5
VCC=3.0V
fC=10.7MHz
fm=1kHz, 75kHzdev
1.5
2
1
1
0.5
THD
40
20
Input — dBµ
Signal-to-noise ratio, S/N — dB
Output voltage, VO — dBm
–10
–15
–20
–25
–30
0
2
4
6
8
90
70
60
2
6
8
10
–3dBLS, QS — VCC
50
VIN=100dBµ
fC=10.7MHz
fm=1kHz, 75kHzdev
4
Sensitivity (–3 dB LS, QS) — dBµ
Total harmonic distortion, THD — %
4
Supply voltage, VCC — V
THD — VCC
3
2
1
1
2
3
4
5
6
7
8
9
40
35
30
LS
25
QS
20
15
10
5
0
0
10
VIN=100dBµ
fC=10.7MHz
fm=1kHz, 75kHzdev
45
1
2
Supply voltage, VCC — V
3
4
5
6
7
8
9
10
9
10
Supply voltage, VCC — V
SDON — VCC
VIFBuff — VCC
220
IF counter buffer output, VIFBuff — mV
100
fC = 10.7 MHz
unmodulated
90
80
70
SDON — dBµ
0
140
120
80
50
0
10
5
60
50
40
30
20
10
0
100
VIN=100dBµ
fC=10.7MHz
fm=1kHz, 75kHzdev
Supply voltage, VCC — V
0
0
80
S/N — VCC
100
VIN=100dBµ
fC=10.7MHz
fm=1kHz, 75kHzdev
–5
60
Input — dBµ
VO — VCC
0
2
3
0
0
140
VSM
S-meter voltage, VSM — V
5
Total harmonic distortion, THD — %
0
0
1
2
3
4
5
6
7
Supply voltage, VCC — V
8
9
10
VIN=100dBµ
fC = 10.7 MHz
unmodulated
200
180
160
140
120
100
80
60
0
1
2
3
4
5
6
7
8
Supply voltage, VCC — V
No. 6017-6/8
LA1225M
ICCO — VCC
VO — Ta
0
Output voltage, VO — dBm
Quiescent current, ICCO — mA
6
5
4
3
2
1
0
2
4
6
8
–5
–10
–15
–20
–25
–30
–40
10
VCC=3.0V
VIN=100dBµ
fC=10.7MHz
fm=1kHz, 75kHzdev
–20
0
S/N — Ta
70
60
–20
0
20
40
60
80
Total harmonic distortion, THD — %
Signal-to-noise ratio, S/N — dB
80
4
100
3
2
1
0
–40
100
–20
0
20
40
60
80
100
Ambient temperature, Ta — °C
–3dBLS, QS — Ta
SDON — Ta
50
80
VCC=3.0V
VIN=100dBµ reference
fC=10.7MHz
fm=1kHz, 75kHzdev
40
–3dBLS
30
QS
20
VCC=3.0V
fC=10.7MHz
unmodulated
70
SDON — dBµ
Sensitivity (–3 dB LS, QS) — dBµ
80
VCC=3.0V
VIN=100dBµ
fC=10.7MHz
fm=1kHz, 75kHzdev
Ambient temperature, Ta — °C
10
60
50
40
–20
0
20
40
60
80
30
–40
100
–20
Ambient temperature, Ta — °C
0
20
40
60
80
100
Ambient temperature, Ta — °C
VIFBuff — Ta
ICCO — Ta
10
6
VCC=3.0V
VIN=100dBµ
fC=10.7MHz
(25°C=0dB)
8
6
VCC=3.0V
Quiescent current, ICCO — mA
IF counter buffer output, VIFBuff — dB
60
5
VCC=3.0V
VIN=100dBµ
fC=10.7MHz
fm=1kHz, 75kHzdev
90
0
–40
40
THD — Ta
100
50
–40
20
Ambient temperature, Ta — °C
Supply voltage, VCC — V
4
2
0
–2
–4
–6
5
4
3
2
–8
–10
–40
–20
0
20
40
60
Ambient temperature, Ta — °C
80
100
1
–40
–20
0
20
40
60
80
100
Ambient temperature, Ta — °C
No. 6017-7/8
LA1225M
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.
This catalog provides information as of March, 2000. Specifications and information herein are subject to
change without notice.
PS No. 6017-8/8