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LA1787NM Arkusz danych(PDF) 3 Page - Sanyo Semicon Device

Numer części LA1787NM
Szczegółowy opis  Single-Chip Car Radio System IC
Download  6 Pages
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Producent  SANYO [Sanyo Semicon Device]
Strona internetowa  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA1787NM Arkusz danych(HTML) 3 Page - Sanyo Semicon Device

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LA1787NM
No.A0229-3/6
Continued from preceding page.
Switch settings
Ratings
Parameter
Symbol
Conditions
123456789
10
min
typ
max
Unit
HCC output
attenuation (1)
AttHCC-1
10.7MHz, 100dB
µ, 10kHz,
L+R = 90%, pilot = 10%,
V29 = 3V
→0.6V, pin 15
ON
B OFF B
ON OFF OFF ON
0.5
4.5
8.5
dB
HCC output
attenuation (2)
AttHCC-2
10.7MHz, 100dB
µ, 10kHz,
L+R = 90%, pilot = 10%,
V29 = 3V
→0.1V, pin 15
ON
B OFF B
ON OFF OFF ON
6
10
14
dB
Input limiting
voltage
Vi-lim
100dB
µ, 10.7MHz, 30% modulation
The IF input such that the output is
-3dB down referenced to the input
ON
B OFF B
ON OFF OFF ON ON
33
40
47
dB
µ
Muting
sensitivity
Vi-mute
The IF input level when V33 = 2V,
no modulation
ON
B OFF B
ON OFF OFF ON
27
35
43
dB
µ
SD sensitivity
(1)
SD-sen1FM
The IF input such that the IF counter
buffer output goes to the on state
(100mVrms or higher)
ON
B OFF B OFF OFF OFF OFF ON
54
62
70
dB
µ
SD sensitivity
(2)
SD-sen2FM
The IF input such that the SD pin goes
to the on state, no modulation
ON
B OFF B
ON OFF OFF OFF ON
54
62
70
dB
µ
IF counter buffer
output
VIFBUFF-FM 10.7MHz, 100dBµ, no modulation,
The pin 23 output
ON
B OFF B OFF OFF OFF OFF ON
130
200
270 mVrms
VSMFM-1
No input, the pin 24 DC output,
no modulation
ON
B OFF B
OFF OFF OFF ON
0.0
0.1
0.3
V
VSMFM-2
50dB
µ, the pin 24 DC output,
no modulation
ON
B OFF B
OFF OFF OFF ON
0.4
1.0
1.5
V
VSMFM-3
70dB
µ, the pin 24 DC output,
no modulation
ON
B OFF B
OFF OFF OFF ON
2.0
2.7
3.5
V
S-meter output
VSMFM-4
100dB
µ, the pin 24 DC output,
no modulation
ON
B OFF B
OFF OFF OFF ON
4.7
5.5
6.2
V
Muting
attenuation
BW-mute
100dBµ, the bandwidth when V33 =
2V, no modulation
ON
B OFF B
OFF OFF OFF ON
150
220
290
kHz
Muting drive
output
VMUTE-100 100dBµ, 0dBµ, the pin 33 DC output,
no modulation
ON
B OFF B
OFF OFF OFF ON
0.00
0.03
0.20
V
FM Front End Mixer Input
N-AGC on input
VNAGC
83MHz no modulation, the input such
that pin 2 becomes 2.0V or lower
ON
A
ON
B
ON OFF OFF
81
88
95
dB
µ
W-AGC on
input
VWAGC
83MHz no modulation, the input such
that pin 2 becomes 2.0V or lower
(when the keyed AGC is 4.0V)
ON
A
ON
B
ON OFF OFF
104
110
116
dB
µ
Conversion gain
A. V
83MHz, 80dBµ, no modulation, the
FE CF output
ON
A
ON
B
ON OFF OFF
19
30
48 mVrms
Oscillator buffer
output
VOSCBUFFFM No input
ON
A
ON
B
ON OFF OFF
85
110
165 mVrms
Noise Canceller Block - NC Input (pin 30)
Gate time
τ GATE
f = 1kHz, 1
µs, with a 100mVp-o pulse
input
ON
OFF A
ON OFF OFF
55
µs
Noise sensitivity
SN
The 1kHz 1
µs pulse input level such
that noise canceller operation starts
ON
OFF A
ON OFF OFF
40
mVp-o
Noise canceller
effect
SN-NC
The pulse exclusion effect due to
noise canceller operation.
Repetition frequency for a 1
µs pulse.
The ratio of the FM mode pin 15
output referenced to the pin 15 output
in 10kHz 150mVp-o AM mode.
ON/
OFF
OFF A
ON OFF OFF
5
Multipath Rejection Circuit - MRC Input (pin 27)
MRC output
VMRC
V24 = 5V
ON
OFF B
ON OFF OFF
2.2
2.3
2.4
V
MRC operating
level
MRC-ON
The pin 32 input level such that pin 24
= 5V and pin 27 = 2V, f = 70kHz
ON
OFF B
ON OFF OFF
10
15
20 mVrms
AM Characteristics - ANT IN input
Practical
sensitivity
S/N-30
1MHz, 30dBµ, fm = 1kHz,
30% modulation, pin 15
OFF
OFF B
ON ON
20
dB
Detection output
VO-AM
1MHz, 74dBµ, fm = 1kHz,
30% modulation, pin 15
OFF
OFF B
ON ON
130
195
270 mVrms
Continued on next page.


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