Page 1
Ordering number: EN2659C
Monolithic Linear IC
LA1816, 1816M
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]
Specifications
Maximum Ratings at Ta = 25°C, See specified Test Circuit
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Maximum supply current I
Flow-in current
(Indicator drive current)
Flow-out current I
Allowable power dissipation Pd max Ta % 70°C 350 mW
Operating temperature Topr –20 to +70 °C
Storage temperature Tstg –40 to +125 °C
max Pins 8, 9, 11, 18, 20, 22 7 V
CC
max Pins8+18+20+22 50 mA
CC
I
LED
21
Pin 9 10 mA
Pin 21 0.1 mA
SANYO : MFP24S
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
Page 2
LA1816, 1816M
Operating Conditions at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
Operating voltage range V
CC
op 1.8 to 6.0 V
CC
Operating Characteristics at Ta = 25°C , VCC= 3 V, See specified Test Circuit
Parameter Symbol Conditions min typ max Unit
I
(FM) FM mode VIN= 0 8.9 15 mA
Quiescent current
[AM Characteristics] : f
= 1000 kHz, fm= 1 kHz
c
Detection output
Signal to noise ratio
Total harmonic distortion
[FM Characteristics] (F.E.) : f
–3 dB sensitivity –3dBL.S.
Local oscillation voltage V
[FM Characteristics] (IF + MPX, MONO) : f
–3 dB sensitivity –3dBL.S.
Demodulation output V
Channel balance C.B. V
Total harmonic distortion THD (mono) V
Signal to noise ratio S/N V
[FM Characteristics] (IF + MPX, STEREO) : f
Channel separation* Sep 25 34 dB
Total harmonic distortion THD (main) 0.6 2.5 %
LED-ON level V
LED-OFF level V
* Sep = 45 dB (typ) at MPX IN
CCO
I
(AM) AM mode VIN= 0 3.3 5.5 mA
CCO
V
1VIN= 23 dBµ, 30% mod. 12 23 41 mV
O
V
2VIN= 80 dBµ, 30% mod. 48 74 120 mV
O
S/N1 V
S/N2 V
THD1 V
THD2 V
= 98 MHz, fm= 1 kHz
c
OSC
= 10.7 MHz, fm= 1 kHz
c
O
c
LED-ON
LED-OFF
= 23 dBµ, 30% mod. 16 21 dB
IN
= 80 dBµ, 30% mod. 45 52 dB
IN
= 80 dBµ, 30% mod. 0.3 1.3 %
IN
= 107 dBµ, 30% mod. 0.6 2.0 %
IN
Referenced to V
3 dB down
f
= 108.7 MHz 75 110 160 mV
OSC
Referenced to V
3 dB down
= 80 dBµ , 30% mod.,
IN
= 100 dBµ, 100% mod.,
IN
VIN= 100 dBµ, 100% mod. 100 135 200 mV
= 100 dBµ, 100% mod. 0 2.0 dB
IN
= 100 dBµ, 100% mod. 0.7 3.0 %
IN
= 100 dBµ, 100% mod. 70 75 dB
IN
= 10.7 MHz, fm= 1 kHz, L + R = 90%, pilot = 10%, VIN= 100 dBµ
2.0 3.5 5.0 %
3V
12 dBµ
39 46 dBµ
2.7 %
No.2659-2/11
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Equivalent Circuit Block Diagram
LA1816, 1816M
Forced monaural when
connected to V
CC
Test Circuit
CDA10.7MG15-A
: Polystyrene film capacitor
L1,SA-026 (Sumida)
L2, YT-40001 (Mitsumi)
L3,HW-50425 (Mitsumi)
Unit (resistance: Ω, capacitance: F)
No.2659-3/11
Page 4
Coil Specifications
FM
LA1816, 1816M
.
ANT B.P.F
SNY-074-2001 (Sumida)
.
OSC
YT-40001 (Mitsumi)
5.5 mm ø air core, 0.8 mm wire, 3T
AM
.
MW OSC
HW-50425
(Mitsumi)
.
Bar antenna
TYA-8032 (PVC-2LXT-L)
(Mitsumi)
Sample Printed Circuit Pattern
.
RF SA-026(Sumida)
3.5 mm ø air core, 1.0 mm wire, 5T
.
Discriminator
CDA 10.7MG (15) (Murata)
3 – 2 2T
4 – 6 9T Qo ^ 80
2 – 1 86T L = 270 µH
(Terminal assembly position)
1 – 2 21T c 100T
3 – 4 30T
1 – 2 L = 604 µH
Qo ^ 120
Cu-foiled area 85 x 80 mm
No.2659-4/11
2
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LA1816, 1816M
How to use the LA1816
1. VCO stop
The VCO is stopped by shorting pin 10 and pin 8 (V
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.
Figure 1
(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 kΩ or greater.
How the error changes with the resistor value is shown in Figure 2.
∆F–R
X
CC
pin).
Error, ∆f–%
Figure 2
RX–Ω
3. How to use the FM DET coil
For pin 17 (FM DET), a coil may be used instead of adjustment-free FM discriminator.
1–310T
Qo=90
f = 10.7 MHz
82 pF internal
Figure 3 How to use the FM DET coil
Figure 4 FM DET Coil Characteristics
Pin 4 (IF) input
Figure 5 FM DET Coil Characteristics
Noise voltage, AM output,
Demodulation output – dBm
ANT input voltage – dBµ
Total harmonic distortion, THD – %
ANT input voltage – dBµ
No.2659-5/11
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LA1816, 1816M
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.
Figure 6
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 8
Figure 7
No.2659-6/11
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Noise voltage, AM output,
Demodulation output – dBm
FM Characteristics
.
LA1816, 1816M
FM Characteristics
Total harmonic distortion, THD – %
Noise voltage, AM output,
Demodulation output – dBm
ANT input voltage – dBµ
FM IF Characteristics
ANT input voltage – dBµ
AM Characteristics
ANT input voltage – dBµ
FM IF Characteristics
Total harmonic distortion, THD – %
ANT input voltage – dBµ
AM Characteristics
Noise voltage, Detection output – dBm
Separation, Sep – dB
ANT input voltage – dB/m
MPX Sep Characteristics
Modulation frequency,f–Hz
Total harmonic distortion, THD – %
ANT input voltage – dB/m
FM THD Characteristics
Total harmonic distortion, THD – %
Frequency modulation,f–Hz
No.2659-7/11
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LA1816, 1816M
MPX Sep Characteristics
MPX Capture Range Characteristics
Pilot level – mV
Separation, Sep – dB
Unit (resistance: Ω, capacitance: F)
Free-running frequency, fF– kHz
MPX THD – VINCharacteristics
Capture range – %
AM Selectivity Characteristics
Unit (Capacitance: F)
Output 20 mV
const.
SFU-455C
(1 element)
PFB455JR
(2 elements)
Total harmonic distortion, THD – %
Input voltage, V
AM Fidelity Characteristics
Attenuation
IN
–mV
Detuning frequency, ∆f – kHz
AM Whistle Characteristics
Attenuation – dB
Detection
output
Whistle max
Attenuation – dB
Total harmonic distortion, THD – %
Detection output, Whistle output – dBm
Modulation frequency,f–Hz
MW Receiving Characteristics
(Tracking at each frequency)
IF interference
Image frequency
Usable
sensitivity
interference
ANT input voltage – dB/m
AM Spurious Characteristics
Referenced to 1 MHz
receiving mode
Max sensitivity
(1 kHz – 30 % mod, output 10 mV)
Response – dB
Sensitivity – dBm, Interference ratio – dB
Receiving frequency,f–kHz
Frequency,f–Hz
No.2659-8/11
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LA1816, 1816M
– kHzSensitivity – dBmQuiescent current, I
F
Free-running frequency, f
–mA
CCO
FM VCCCharacteristics
f
(local)
OSC
f
(free-running)
F
Qs (usable sensitivity)
–3 dB L.S. (–3 dB limiting sensitivity)
– MHzTotal harmonic distortion, THD – %
OSC
– dBm f
O
Demodulation output, V
AM VCCCharacteristics
Detection output (V
= 100 dB/m)
IN
Usable sensitivity (input at S/N = 20 dB)
Sensitivity – dB/mQuiescent current, I
Max.
sensitivity (input at output 10mV)
–mA
CCO
Detection output – dBm
– MHz
OSC
Free-running frequency, f – kHz f
Supply voltage, V
CC
–V
FM Temperature Characteristics
Ambient temperature, Ta – °C
SW2 Characteristics (2)
Noise voltage, Detection output – dBm
–mV
OSC
Supply voltage, V
CC
–V
SW2 Characteristics (1)
IEC input – dBµ
SW2 Characteristic
Pin 19 voltage
Total harmonic distortion, THD – %
Total harmonic distortion, THD – %
Noise voltage, Detection output – dBm
IEC input – dBµ
Adjust
so that
THD is
minimized.
Oscillation voltage, V
Total harmonic distortion, THD – %
Receiving frequency,f–MHz
No.2659-9/11
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SW Band Test Circuit
LA1816, 1816M
Unit (resistance: Ω, capacitance: F)
Coil Specifications
T1 SW2 OSC
HW 40184 (Mitsumi)
4 – 6 8T
3 – 1 12T
T1 SW2 ANT
YT 30117 (Mitsumi)
1 – 2 4T
4 – 6 2T
2 – 3 4T
LW Characteristics
Qo ^ 28,
L = 1.31µH
Qo = 95,
L = 1.4 µH
0237 1500 (Sumida)
4 – 6 8T
3 – 1 12T
Qo ^ 20,
L = 1.31 µH
2158 4095 319A (Sumida)
4 – 6 2T
1 – 2 5T
2 – 3 5T
Qo ^ 40,
L = 1.4 µH
Noise voltage, Detection output – dBm
ANT input voltage – dB/m
Total harmonic distortion, THD – %
No.2659-10/11
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LA1816, 1816M
LW Band Test Circuit Coil Specifications
T1 c LW OSC
MA-7014 (Mitsumi)
4 – 6 40T
1 – 3 80T
L = 220 µH, Qo = 130
L1 c LW bar antenna
HH-50161 (Mitsumi)
Unit (capacitance: F)
1– 2 20T
3– 4 200T
3– 4 L = 2.74 mH, Qo ^ 200
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 accurateandreliable,butno 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.
No.2659-11/11
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