LA1781M_09 Datasheet, PDF (20/48 Pages) Sanyo Semicon Device – For Car Radios Single-Chip Tuner IC

Test Conditions
LA1781M
Parameter
Symbol
SW1
Current drain
ICCO-FM
ON
Demodulation output
VO-FM
ON
Pin 31 demodulation output VO-FM31
ON
Channel balance
CB
ON
Total harmonic distortion (FM) THD-FM mono
ON
Signal-to-noise ratio : IF
S/N-FM IF
ON
AM suppression ratio : IF
AMR IF
ON
Muting attenuation
Att-1
ON
Att-2
ON
Att-3
ON
Separation
Separation
ON
Stereo on level
ST-ON
ON
Stereo off level
ST-OFF
ON
Main total harmonic distortion THD-Main L
ON
Pilot cancellation
PCAN
ON
SNC output attenuation
AttSNC
ON
HCC output attenuation 1
AttHCC-1
ON
HCC output attenuation 2
AttHCC-2
ON
Input limiting voltage
Muting sensitivity
SD sensitivity 1
VIN-LIM
ON
VIN-MUTE
ON
SD-sen1 FM
ON
SD sensitivity 2
SD-sen2 FM
ON
IF counter buffer output
VIFBUFF-FM
ON
Signal meter output (FM)
VSM FM-1
ON
VSM FM-2
ON
VSM FM-3
ON
VSM FM-4
ON
Muting bandwidth
BW-MUTE
ON
Mute drive output
N-AGC on input
W-AGC on input
Conversion gain
VMUTE-100
ON
VNAGC
ON
VWAGC
ON
A.V
ON
Oscillator buffer output
Gate time 1
VOSCBUFF-FM
ON
τGATE1
ON
Noise sensitivity
SN
ON
NC effect
SN-NC
ON/OFF
MRC output
VMRC
ON
MRC operating level
MRC-ON
ON
Practical sensitivity
S/N-30
OFF
Detection output
Pin 31 detection output
AGC F.O.M.
Signal-to-noise ratio
VO-AM
VO-AM31
VAGC-FOM
S/N-AM
OFF
OFF
OFF
OFF
Total harmonic distortion (AM) THD-AM
OFF
Signal meter output (AM)
Oscillator buffer output
Wide band AGC sensitivity
VSM AM-1
VSM AM-2
VOSCBUFF-AM1
W-AGCsen1
OFF
OFF
OFF
OFF
W-AGCsen2
OFF
SD sensitivity
SD-sen1 AM
OFF
SD-sen2 AM
OFF
IF buffer output
VIFBUFF-AM
OFF
SW2
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
a
a
a
a
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SW3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
SW4
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
a
a
a
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
Switch states
SW5 SW6
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
OFF OFF
ON
OFF
OFF OFF
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
SW7
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SW8
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SW9 SW10
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
OFF/ON -
ON
-
ON
-
ON
-
ON
ON
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
ON
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
No.6038-20/48