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參數資料
| 型號： | LA1776M |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 調諧器 |
| 英文描述： | 2-BAND, AUDIO TUNER, PQFP64 |
| 封裝： | 14 X 14 MM, QFP-64 |
| 文件頁數： | 37/41頁 |
| 文件大小： | 547K |
| 代理商： | LA1776M |
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No.8085-5/41
LA1776M
Ratings
Parameter
Symbol
Conditions
min
typ
max
unit
[AM Characteristics] AM ANT input
Practical sensitivity
S/N-30
1 MHz, 30 dB, fm = 1 kHz, 30% modulation, pin 15
20
dB
Detector output
VO-AM
1 MHz, 74 dB, fm = 1 kHz, 30% modulation, pin 15
140
210
280
mVrms
Pin 31 detector output
VO-AM31
1 MHz, 74 dB, fm = 1 kHz, 30% modulation, pin 31
130
190
260
mVms
AGC F.O.M.
VAGC-FOM
1 MHz, 74 dB, referenced to the output, the input amplitude
51
56
61
dB
such that the output falls by 10 dB. Pin 15
Signal-to-noise ratio
S/N-AM
1 MHz, 74 dB, fm = 1 kHz, 30% modulation
50
56
dB
Total harmonic distortion
THD-AM
1 MHz, 74 dB, fm = 1 kHz, 80% modulation
0.3
1
%
Signal meter output
VSM AM-1
No input
0.0
0.1
0.5
V
VSM AM-2
1 MHz, 130 dB, unmodulated
3.9
4.9
6.8
V
Oscillator buffer output
VOSCBUFF AM
No input, the pin 15 output
185
230
mVrms
Wide band AGC sensitivity
W-AGCsen1
1.4 MHz, the input when V48 = 0.7 V
89
95
101
dB
W-AGCsen2
1.4 MHz, the input when V48 = 0.7 V (seek mode)
80
86
92
dB
SD sensitivity
SD-sen1 AM
1 MHz, the ANT input level such that the IF counter output turns on.
24
30
36
dB
SD-sen2 AM
1 MHz, the ANT input level such that the SD pin goes to the on state.
24
30
36
dB
IF buffer output
VIFBUFF-AM
1 MHz, 74 dB, unmodulated. The pin 23 output
180
220
mVrms
Note: These measurements must be made using the either the IC-51-0644-692 IC socket (manufactured by Yamaichi Electronics).
* 1. When the resistor between pin 58 and ground is 200 k
.
* 2. When the resistor between pin 58 and ground is 30 k
.
Package Dimensions
Unit:mm
3159A
Continued from preceding page.
Mounted on a 40
× 18 × 1.3 mm3
glass epoxy printed circuit board
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,
P
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–
m
W
Ambient temperature, Ta – C
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