參數(shù)資料
型號： LA1780M
廠商： Sanyo Electric Co.,Ltd.
英文描述： Single-Chip Tuner IC for Car Radios
中文描述： 單芯片調(diào)諧器IC的汽車收音機
文件頁數(shù)： 3/38頁
文件大?。?/td> 764K
代理商： LA1780M
Ratings
Parameter
Symbol
Conditions
min
typ
max
unit
[FM FE Mixer Input
N-AGC on input
V
N
-AGC
83 MHz, unmodulated.
The input such that the pin 2 voltage is 2.0 V or below
80
87
94
dBμ
W-AGC on input
V
W
AGC
83 MHz, unmodulated. The input such that the pin 2
voltage is 2.0 V or below. (When the keyed AGC is set to 4.0 V.)
100
106
112
dBμ
Conversion gain
A.V
83 MHz, 80 dBμ, unmodulated. The FE CF output
19
30
48
mVrms
Oscillator buffer output
V
OSCBUFFFM
No input
260
370
480
mVrms
[NC Block] NC input (pin 30)
Gate time
τ
GATE1
f = 1 kHz, for a 1-μs, 100-mV p-o pulse
55
μs
Noise sensitivity
SN
The level of a 1 = kHz, 1-μs pulse input that starts
noise canceller operation. Measured at pin 30.
40
mVp-o
The pulse rejection effect provided by the noise canceller.
For a repeated 1-μs wide pulse, frequency = 10 kHz,
150 mV p-o. The ratio of the FM mode pin 15 output
referenced to the AM mode pin 15 output (effective value)
NC effect
SN-NC
5
[Multipath Rejection Circuit] MRC input (pin 27)
MRC output
VMRC
V24 = 5 V
2.2
2.3
2.4
V
MRC operating level
MRC-ON
The pin 32 input level at f = 70 kHz such that
pin 24 goes to 5 V and pin 27 goes to 2 V
10
15
20
mVrms
[AM Characteristics] AM ANT input
Practical sensitivity
S/N-30
1 MHz, 30 dBμ, f
m
= 1 kHz, 30% modulation, pin 15
1 MHz, 74 dBμ, f
m
= 1 kHz, 30% modulation, pin 15
1 MHz, 74 dBμ, f
m
= 1 kHz, 30% modulation, pin 31
1 MHz, 74 dBμ, referenced to the output, the input amplitude
such that the output falls by 10 dB. Pin 15
20
dB
Detector output
V
O
-AM
V
O
-AM31
85
120
170
mVrms
Pin 31 detector output
75
110
150
mVms
AGC F.O.M.
V
AGC-FOM
56
61
66
dB
Signal-to-noise ratio
S/N-AM
1 MHz, 74 dBμ, f
m
= 1 kHz, 30% modulation
1 MHz, 74 dBμ, f
m
= 1 kHz, 80% modulation
No input
47
52
dB
Total harmonic distortion
THD-AM
0.3
1
%
Signal meter output
V
SM
AM-1
V
SM
AM-2
V
OSCBUFF AM1
W-AGCsen1
0.0
0.2
0.5
V
1 MHz, 130 dBμ, unmodulated
3.8
4.8
6.2
V
Oscillator buffer output
No input, the pin 5 output
185
230
mVrms
Wide band AGC sensitivity
1.4 MHz, the input when V46 = 0.7 V
83
89
95
dBμ
W-AGCsen2
1.4 MHz, the input when V46 = 0.7 V (seek mode)
74
80
86
dBμ
SD sensitivity
SD-sen1 AM
1 MHz, the ANT input level such that the IF counter output turns on.
26
32
38
dBμ
SD-sen2 AM
1 MHz, the ANT input level such that the SD pin goes to the on state.
26
32
38
dBμ
IF buffer output
V
IFBUFF-AM
1 MHz, 74 dBμ, unmodulated. The pin 23 output
200
290
mVrms
No. 5724-3/38
LA1780M
Note: These measurements must be made using the either the IC-51-0644-824 or KS8277 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
.
Continued from preceding page.
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LA1780MA-A-MPB-E 制造商:ON Semiconductor 功能描述:ANALOG CAR RADIO TUNER - Trays 制造商:Rochester Electronics LLC 功能描述: 制造商:ON Semiconductor 功能描述:FTRAY - ANALOG CAR RADIO TUNER
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