Single-Chip AM/FM, MPX Tuner System for Headphone
Stereos, Radio-Cassette Recorders
Functions
.
FM: RF amplifier, MIX, OSC, IF amplifier, quadrature
detector
.
AM: RF amplifier, MIX, OSC, IF amplifier, detector, AGC
.
MPX: PLL stereo decoder, stereo indicator, VCO stop
Features
.
Contains FM tuner, AM tuner, MPX on a single chip.
.
Adjustment-free FM detector and AM IF
.
Minimum number of external parts required
.
Low-voltage operation
.
Low current drain
.
Less carrier leak of MPX (no-input, monaural-input mode)
Package Dimensions
unit : mm
3067-DIP24S
[LA1816]
SANYO : DIP24S
unit : mm
3112-MFP24S
[LA1816M]
SANYO : MFP24S
Specifications
Maximum Ratings
at Ta = 25C, See specified Test Circuit
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
Pins 8, 9, 11, 18, 20, 22
7
V
Maximum supply current
I
CC
max
Pins 8 + 18 + 20 + 22
50
mA
Flow-in current
(Indicator drive current)
I
LED
Pin 9
10
mA
Flow-out current
I
21
Pin 21
0.1
mA
Allowable power dissipation
Pd max
Ta
%
70C
350
mW
Operating temperature
Topr
20 to +70
C
Storage temperature
Tstg
40 to +125
C
Ordering number: EN2659C
Monolithic Linear IC
LA1816, 1816M
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
N3097HA(II)/8099YT/N307TA/N197TA,TS No.2659-1/11
Operating Conditions
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V
CC
3
V
Operating voltage range
V
CC
op
1.8 to 6.0
V
Operating Characteristics
at Ta = 25C , V
CC
= 3 V, See specified Test Circuit
Parameter
Symbol
Conditions
min
typ
max
Unit
Quiescent current
I
CCO
(FM)
FM mode V
IN
= 0
8.9
15
mA
I
CCO
(AM)
AM mode V
IN
= 0
3.3
5.5
mA
[AM Characteristics] : f
c
= 1000 kHz, f
m
= 1 kHz
Detection output
V
O
1
V
IN
= 23 dB, 30% mod.
12
23
41
mV
V
O
2
V
IN
= 80 dB, 30% mod.
48
74
120
mV
Signal to noise ratio
S/N1
V
IN
= 23 dB, 30% mod.
16
21
dB
S/N2
V
IN
= 80 dB, 30% mod.
45
52
dB
Total harmonic distortion
THD1
V
IN
= 80 dB, 30% mod.
0.3
1.3
%
THD2
V
IN
= 107 dB, 30% mod.
0.6
2.0
%
[FM Characteristics] (F.E.) : f
c
= 98 MHz, f
m
= 1 kHz
3 dB sensitivity
3dBL.S.
Referenced to V
IN
= 80 dB , 30% mod.,
3 dB down
12
dB
Local oscillation voltage
V
OSC
f
OSC
= 108.7 MHz
75
110
160
mV
[FM Characteristics] (IF + MPX, MONO) : f
c
= 10.7 MHz, f
m
= 1 kHz
3 dB sensitivity
3dBL.S.
Referenced to V
IN
= 100 dB, 100% mod.,
3 dB down
39
46
dB
Demodulation output
V
O
V
IN
= 100 dB, 100% mod.
100
135
200
mV
Channel balance
C.B.
V
IN
= 100 dB, 100% mod.
0
2.0
dB
Total harmonic distortion
THD (mono)
V
IN
= 100 dB, 100% mod.
0.7
3.0
%
Signal to noise ratio
S/N
V
IN
= 100 dB, 100% mod.
70
75
dB
[FM Characteristics] (IF + MPX, STEREO) : f
c
= 10.7 MHz, f
m
= 1 kHz, L + R = 90%, pilot = 10%, V
IN
= 100 dB
Channel separation
*
Sep
25
34
dB
Total harmonic distortion
THD (main)
0.6
2.5
%
LED-ON level
V
LED-ON
2.0
3.5
5.0
%
LED-OFF level
V
LED-OFF
2.7
%
* Sep = 45 dB (typ) at MPX IN
LA1816, 1816M
No.2659-2/11
Equivalent Circuit Block Diagram
Test Circuit
Forced monaural when
connected to V
CC
: Polystyrene film capacitor
L1,SA-026 (Sumida)
L2, YT-40001 (Mitsumi)
L3,HW-50425 (Mitsumi)
Unit (resistance:
, capacitance: F)
CDA10.7MG15-A
LA1816, 1816M
No.2659-3/11
Coil Specifications
FM
.
ANT B.P.F
SNY-074-2001 (Sumida)
.
OSC
YT-40001 (Mitsumi)
5.5 mm air core, 0.8 mm wire, 3T
.
RF SA-026(Sumida)
3.5 mm air core, 1.0 mm wire, 5T
.
Discriminator
CDA 10.7MG (15) (Murata)
AM
Sample Printed Circuit Pattern
.
MW OSC
HW-50425
(Mitsumi)
3
2
2T
4
6
9T
Qo
^
80
2
1
86T
L = 270 H
(Terminal assembly position)
.
Bar antenna
TYA-8032 (PVC-2LXT-L)
(Mitsumi)
1
2
21T
c
100T
3
4
30T
1
2
L = 604 H
Qo
^
120
Cu-foiled area 85 x 80 mm
2
LA1816, 1816M
No.2659-4/11
How to use the LA1816
1.
VCO stop
The VCO is stopped by shorting pin 10 and pin 8 (V
CC
pin).
Note) The maximum supply voltage on pin 10 must not exceed the voltage on pin 8.
2.
Free-running frequency check
Either of the following two methods is used to check the free-running frequency.
(a) Connect pin 12 to a frequency counter through the high input impedance amplifier.
(b) Connect the connection point of the semifixed resistor connected to pin 12 and the fixed resistor to a frequency counter
through the resistor of 240 k
or greater.
How the error changes with the resistor value is shown in Figure 2.
3.
How to use the FM DET coil
For pin 17 (FM DET), a coil may be used instead of adjustment-free FM discriminator.
Figure 1
Error
,
f%
Figure 2
F R
X
R
X
1
3
10T
Qo = 90
f = 10.7 MHz
82 pF internal
Figure 3 How to use the FM DET coil
Noise
voltage,
AM
output,
Demodulation
output
dBm
Figure 4 FM DET Coil Characteristics
ANT input voltage dB
T
otal
harmonic
distortion,
THD
%
Figure 5 FM DET Coil Characteristics
ANT input voltage dB
Pin 4 (IF) input
LA1816, 1816M
No.2659-5/11
4.
How to use the FM AFC
The S curve at output pin 16 is as shown Figure 6. Figure 7 shows how to provide FM AFC.
5.
AM-FM selection
The FM mode is entered with pin 11 open as shown in Figure 8 . When pin 11 and pin 8 are made to be at the same
potential in terms of DC, the AM mode is entered. It should be noted that the dynamic range is narrowed whether the
potential at pin 11 is lower or higher than that at pin 8.
Figure 6
Figure 7
Figure 8
LA1816, 1816M
No.2659-6/11
Noise
voltage,
AM
output,
Demodulation
output
dBm
FM Characteristics
ANT input voltage dB
T
otal
harmonic
distortion,
THD
%
FM Characteristics
ANT input voltage dB
.
Noise
voltage,
AM
output,
Demodulation
output
dBm
FM IF Characteristics
ANT input voltage dB
T
otal
harmonic
distortion,
THD
%
FM IF Characteristics
ANT input voltage dB
Noise
voltage,
Detection
output
dBm
AM Characteristics
ANT input voltage dB/m
T
otal
harmonic
distortion,
THD
%
AM Characteristics
ANT input voltage dB/m
Separation,
Sep
d
B
MPX Sep Characteristics
Modulation frequency, f Hz
T
otal
harmonic
distortion,
THD
%
FM THD Characteristics
Frequency modulation, f Hz
LA1816, 1816M
No.2659-7/11
Separation,
Sep
d
B
MPX Sep Characteristics
Unit (resistance:
, capacitance: F)
Free-running frequency, f
F
kHz
MPX Capture Range Characteristics
Pilot
level
m
V
Unit (Capacitance: F)
Capture range %
T
otal
harmonic
distortion,
THD
%
MPX THD V
IN
Characteristics
Input voltage, V
IN
mV
AM Selectivity Characteristics
Output 20 mV
const.
Attenuation
d
B
PFB455JR
(2 elements)
SFU-455C
(1 element)
Detuning frequency,
f kHz
Attenuation
d
B
AM Fidelity Characteristics
Attenuation
Modulation frequency, f Hz
T
otal
harmonic
distortion,
THD
%
Detection
output,
Whistle
output
dBm
AM Whistle Characteristics
Detection
output
Whistle max
ANT input voltage dB/m
Sensitivity
dBm,
Interference
ratio
d
B
MW Receiving Characteristics
(Tracking at each frequency)
IF interference
Image frequency
interference
Usable
sensitivity
Max sensitivity
(1 kHz 30 % mod, output 10 mV)
Receiving frequency, f kHz
Response
d
B
AM Spurious Characteristics
Referenced to 1 MHz
receiving mode
Frequency, f Hz
LA1816, 1816M
No.2659-8/11
Free-running
frequency
,
f
F
kHz
Sensitivity
dBm
Quiescent
current,
I
CCO
m
A
FM V
CC
Characteristics
f
OSC
(local)
f
F
(free-running)
Qs (usable sensitivity)
3 dB L.S. (3 dB limiting sensitivity)
Supply voltage, V
CC
V
Demodulation
output,
V
O
dBm
f
OSC
MHz
T
otal
harmonic
distortion,
THD
%
Sensitivity
dB/m
Quiescent
current,
I
CCO
m
A
AM V
CC
Characteristics
Detection output (V
IN
= 100 dB/m)
Usable sensitivity (input at S/N = 20 dB)
Max.
sensitivity (input at output 10mV)
Supply voltage, V
CC
V
Detection
output
dBm
T
otal
harmonic
distortion,
THD
%
Free-running
frequency
,
f
kHz
f
OSC
MHz
FM Temperature Characteristics
Ambient temperature, Ta C
Noise
voltage,
Detection
output
dBm
SW2 Characteristics (1)
IEC input dB
T
otal
harmonic
distortion,
THD
%
Noise
voltage,
Detection
output
dBm
SW2 Characteristics (2)
Adjust
so that
THD is
minimized.
IEC input dB
T
otal
harmonic
distortion,
THD
%
Oscillation
voltage,
V
OSC
m
V
SW2 Characteristic
Pin 19 voltage
Receiving frequency, f MHz
LA1816, 1816M
No.2659-9/11
SW Band Test Circuit
Coil Specifications
Unit (resistance:
, capacitance: F)
T1
SW2 OSC
HW 40184 (Mitsumi)
4
6
8T
3
1
12T
Qo
^
28,
L = 1.31H
0237 1500 (Sumida)
4
6
8T
3
1
12T
Qo
^
20,
L = 1.31 H
T1
SW2 ANT
YT 30117 (Mitsumi)
1
2
4T
4
6
2T
2
3
4T
Qo = 95,
L = 1.4 H
4
6
2T
1
2
5T
2
3
5T
Qo
^
40,
L = 1.4 H
2158 4095 319A (Sumida)
Noise
voltage,
Detection
output
dBm
LW Characteristics
ANT input voltage dB/m
T
otal
harmonic
distortion,
THD
%
LA1816, 1816M
No.2659-10/11
LW Band Test Circuit
Coil Specifications
No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment,
nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or
indirectly cause injury, death or property loss.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
1
Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors
and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and
expenses associated with such use:
2
Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO
ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally.
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 November, 1997. Specifications and information herein are subject to change without notice.
Unit (capacitance: F)
T1
c
LW OSC
MA-7014 (Mitsumi)
L1
c
LW bar antenna
HH-50161 (Mitsumi)
4
6
40T
1
3
80T
L = 220 H, Qo = 130
1
2
20T
3
4
200T
3
4
L = 2.74 mH, Qo
^
200
LA1816, 1816M
No.2659-11/11
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