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參數(shù)資料
| 型號： | LA1867NM |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO DEMODULATOR, PQFP44 |
| 封裝： | QIP-44 |
| 文件頁數(shù)： | 23/32頁 |
| 文件大?。?/td> | 1074K |
| 代理商： | LA1867NM |
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Continued from preceding page.
Block Functions
1. FM-IF
IF-limiter amplifier
S-meter outputs (three systems)
Quadrature detector
AF preamplifier
AFC output
Muting circuit (band mute, weak input mute, soft mute)
Control pins (SD, muting attenuation, soft mute on level)
SD output
IF counter buffer output
S-meter output shifter
2. Noise canceller
Built-in high-pass filter
Built-in low-pass filter delay circuit
Noise AGC
Pilot signal compensation circuit
Noise reduction setting pin
Noise canceller off in AM mode function
High-pass filter “fc” control pin
No. 4619-3/32
LA1867NM
Parameter
Symbol
Conditions
Rating
Unit
min
typ
max
[FM BLOCK]
VSMFM-1
No input, pin 32 DC output,
0.0
0.1
0.3
V
non-mod, SW-2 open
VSMFM-2
50 dBμ, pin 32 DC output,
1.0
2.1
3.3
V
Signal meter output
non-mod, SW-2 open
VSMFM-3
70 dBμ, pin 32 DC output,
2.3
3.5
5.3
V
non-mod, SW-2 open
VSMFM-4
100 dBμ, pin 32 DC output,
4.7
6.0
6.7
V
non-mod, SW-2 open
Muting bandwidth
BW-Mute
100 dBμ, The bandwidth when V23 = 2 V,
110
190
290
kHz
non-mod
Muting drive output
VMute-100
100 dBμ, pin 23 DC output, non-mod
0.00
0.03
0.20
V
[N.C BLOCK]
Noise Canceller Input (pin 20), PG1
f = 1 kHz, 1 μs, with a 100 mV p-o pulse
tGATE1
input, the time for V40 to become 1 V
35
55
75
μs
or higher
Gate time
f = 1 kHz, 1 μs, with a 100 mV p-o pulse
tGATE2
input, with the MRC pin 15 input = 1 kHz,
10
25
40
μs
30 mV rms
With a 1 kHz signal such that the noise
Noise sensitivity
SN
canceller operation is on, the 1 μs pulse
50
75
mVp-o
input level, measure pin 20.
[Multipath suppression circuit]
MRC Input (AC1)
MRC output
VMRC
V18 = 2 V, 1 kHz, 5 mV rms, the pin
1.75
1.85
1.95
V
12 voltage when there is a pin 15 input
MRC operating level
MRC-ON
V18 = 2 V, the pin 15 input level such
15
30
mVrms
that V12 becomes 1.75 V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA1867NM-MPB-E | 制造商:ON Semiconductor 功能描述: |
| LA186B-9SEF9UG-3-PF | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA186B-9SEF-PF | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA186B-DBK-2-PF | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA186B-DBK-PF | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
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