Specifications
Maximum Ratings at Ta= 25°C, See specified Test Circuit
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
Pins 3, 7, 8, 11, 20, 21
9
V
Maximum supply current
ICC max
Pins3+20+21
50
mA
Flow-in current
(Indicator drive current)
ILED
Pins 7, 8
20
mA
Flow-out current
I23
Pin 23
0.1
mA
Allowable power dissipation
Pd max
Ta
%70°C
500
mW
Operating temperature
Topr
–20 to +70
°C
Storage temperature
Tstg
–40 to +125
°C
Opearating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
4.5
V
Operating voltage range
VCCop
3.0 to 8.0
V
* The FM output level forms an N curve (LA1805) and an S curve (LA1806).
LA1805: N curve (for US band)
LA1806: S curve (for Japanese band). Since an output load resistor is connected to pins 9, 10 externally, your desired output
level can be set by varrying the output resistance.
Operating Characteristics at Ta = 25°C, VCC = 4.5 V, See specified Test Circuit.
Parameter
Symbol
Conditions
min
typ
max
Unit
FM characteristics (Mono): fc = 10.7 MHz, fm =1 kHz
Quiescent current
ICCO
No input
13
20
mA
–3 dB sensitivity
–3dBL.S.
Referenced to VIN = 100 dB, 100%, down 3 dB
28
35
dB
Demodulation output
V0
VIN = 100 dB, 100% mod.
154
226
308
mV
Channel balance
C.B.
VIN = 100 dB, 100% mod.
0
1.5
dB
Total harmonic distortion
THD
VIN = 100 dB, 100% mod.
0.45
1.2
%
Signal to noise ratio
S/N
VIN = 100 dB, 100% mod.
70
80
dB
LED ON sensitivity
VLED
IL =1 mA
23
33
43
dB
FM Characteristics (Stereo) : fc = 10.7 MHz, fm =1 kHz, L +R= 90%, pilot = 10%, VIN = 100 dB
Separation
Sep
32
48
dB
Stereo distortion
THD (MAIN)
0.45
1.2
%
LED ON level
VLED-on
2.4
3.9
5.4
%
LED OFF level
VLED-off
2.7
%
AM Characteristics: fc = 1000 kHz, fm =1 kHz
Quiescent current
ICCO
No input
9.5
14.5
mA
Detection output
VO1VIN =23 dB, 30% mod.
29
54
97
mV
VO2VIN =80 dB, 30% mod.
78
126
193
mV
Signal to noise ratio
S/N1
VIN =23 dB, 30% mod.
17
21
dB
S/N2
VIN =80 dB, 30% mod.
50
55
dB
Total harmonic distortion
THD1
VIN =80 dB, 30% mod.
0.45
1.2
%
THD2
VIN = 100 dB, 30% mod.
0.6
1.5
%
LED ON sensitivity
VLED
IL =1 mA
Note : Be fully careful of dielectric breakdown.
16
24
32
dB
Note : For further details, refer to the separate catalog of the LA1805.
LA1806
No.3210-2/4