參數(shù)資料
型號(hào)： LA1776M
廠商： SANYO SEMICONDUCTOR CO LTD
元件分類(lèi)： 調(diào)諧器
英文描述： 2-BAND, AUDIO TUNER, PQFP64
封裝： 14 X 14 MM, QFP-64
文件頁(yè)數(shù)： 34/41頁(yè)
文件大小： 547K
代理商： LA1776M
No.8085-4/41
LA1776M
Operating Characteristics at Ta = 25°C, VCC= 8.0V, with the specified test circuit and for standards other than
Sanyo's for the FM IF input
Continued on next page.
Ratings
Parameter
Symbol
Conditions
min
typ
max
unit
[FM Characteristics] At the FM IF input
Current drain
ICCO-AM
No input, I9 + I40 + I46 + I54 + I59 + I60 + I61
78
93
112
mA
Demodulation output
VO-FM
10.7 MHz, 100dB, 1 kHz, 100%mod, The pin 15 output
205
310
415
mVrms
Pin 31 demodulation output
VO-31
10.7 MHz, 100dB, 1 kHz, 100%mod, The pin 31 output
190
295
380
mVrms
Channel balance
CB
The ratio between pins 15 and 16 at 10.7 MHz, 100 dB, 1 kHz
–1
0
+1
dB
Total harmonic distortion
THD-FM mono
10.7 MHz, 100 dB, 1 kHz, 100% mod, pin 15
0.3
1
%
Signal-to-noise ratio: IF
S/N-FM IF
10.7 MHz, 100 dB, 1 kHz, 100% mod, pin 15
68
76
dB
AM suppression ratio: IF
AMR IF
10.7 MHz, 100 dB, 1 kHz, fm = 1 kHz, 30% AM, pin 15
55
68
dB
Att-1
10.7 MHz, 100 dB, 1 kHz. The pin 15
5
10
15
dB
attenuation when V33 goes from 0 to 2 V
Muting attenuation
Att-2
10.7 MHz, 100 dB, 1 kHz. The pin 15
16
21
26
dB
attenuation when V33 goes from 0 to 2 V*1
Att-3
10.7 MHz, 100 dB, 1 kHz. The pin 15
26
31
36
dB
attenuation when V33 goes from 0 to 2 V*2
Separation
10.7 MHz, 100 dB, L+R = 90%, pilot = 10%. The pin 15 output
30
40
dB
ratio
Stereo on level
ST-ON
The pilot modulation such that V39< 0.5 V
2.3
3.5
5.5
%
Stereo off level
ST-OFF
The pilot modulation such that V39> 3.5 V
0.6
1.6
%
Main total harmonic distortion
THD-Main L
10.7 MHz, 100 dB, L+R = 90%, pilot = 10%. The pin 15 signal
0.3
1.2
%
Pilot cancellation
PCAN
10.7 MHz, 100 dB, pilot = 10%.
20
30
dB
The pin 15 signal/the pilot level leakage. DIN audio
SNC output attenuation
AttSNC
10.7 MHz, 100 dB, L-R = 90%, pilot = 10%.
4
8
12
dB
V28 = 3 V
→ 0.6 V, pin 15
AttHCC-1
10.7 MHz, 100 dB, 10 kHz, L+R = 90%, pilot = 10%.
2
6
10
dB
HCC output attenuation
V29 = 3 V
→ 0.6 V, pin 15
AttHCC-2
10.7 MHz, 100 dB, 10 kHz, L+R = 90%,
7
11
15
dB
pilot = 10%. V29 = 3 V
→ 0.1 V, pin 15
Input limiting voltage
Vi-lim
100 dB, 10.7 MHz, 30% modulation. The IF input such
35
42
49
dB
that the input reference output goes down by 3 dB
Muting sensitivity
Vi-mute
The IF input level (unmodulated) when V33 = 2 V
45
53
61
dB
SD-sen1 FM
The IF input level (unmodulated) (over 100 mV rms)
72
80
88
dB
SD sensitivity
such that the IF counter buffer output goes on
SD-sen2 FM
Unmodulated IF input such that the SD pin goes to the on state
72
80
dB
IF counter buffer output
VIFBUFF-FM
10.7 MHz, 100 dB, unmodulated. The pin 23 output
150
230
300
mVrms
VSM FM-1
No input. The pin 24 DC output, unmodulated
0.1
0.3
V
Signal meter output
VSM FM-2
60 dB. The pin 24 DC output, unmodulated
0.6
1.2
1.8
V
VSM FM-3
80 dB. The pin 24 DC output, unmodulated
2.0
2.7
3.5
V
VSM FM-4
110 dB. The pin 24 DC output, unmodulated
4.5
5.2
5.9
V
Muting bandwidth
BW-mute
100 dB. The bandwidth when V33 = 2 V, unmodulated
150
220
290
kHz
Mute drive output
VMUTE-0
No input. The pin 33 DC output, unmodulated
1.8
2.5
3.3
V
VMUTE-100
100 dB, 0 dB. The pin 33 DC output, unmodulated
0
0.1
0.2
V
[FM FE Mixer Input
N-AGC on input
VN-AGC
83 MHz, unmodulated.
83
90
97
dB
The input such that the pin 2 voltage is 2.0 V or below
W-AGC on input
VWAGC
83 MHz, unmodulated. The input such that the pin 2
98
104
110
dB
voltage is 2.0 V or below. (When the keyed AGC is set to 4.0 V.)
Conversion gain
A.V
83 MHz, 80 dB, unmodulated. The FE CF output
90
140
220
mVrms
Oscillator buffer output
VOSCBUFFFM
No input
85
110
165
mVrms
[Multipath Rejection Circuit] MRC input (pin 27)
MRC output
VMRC
V24 = 5 V
2.9
3.0
3.1
V
MRC operating level
MRC-ON
The pin 26 input level at f = 70 kHz such that
35
55
70
mVrms
pin 24 goes to 5 V and pin 27 goes to 2 V
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