參數(shù)資料
型號(hào): MC3362
廠商: Motorola, Inc.
英文描述: Single Output LDO, 400mA, Fixed(2.5V), Low Noise, Fast Transient Response 8-MSOP -40 to 85
中文描述: 低功耗雙轉(zhuǎn)換調(diào)頻接收機(jī)
文件頁(yè)數(shù): 4/8頁(yè)
文件大小: 281K
代理商: MC3362
MC3362
4
MOTOROLA ANALOG IC DEVICE DATA
CRF1 = muRata CFU 455X – the X
suffix denotes 6.0 dB bandwidth.
Rin = Rout = 1.5 to 2.0 k
.
CRF2 = muRata SFA10.7 MF5 or
SFE10.7 or equivalent. Rin = Rout
= 330
. Crystal filters can be
used but impedance matching will
need to be added to ensure proper
filter characteristics are realized.
(This network must be tuned to exactly
10.7 MHz above or below the incoming
RF signal.
NOTE:
The IF is rolled off above 10.7
MHz to reduce L.O. feedthrough.)
(MC3362)
0.01
0.01
0.41
μ
CRF2
3.0 k
10.7 MHz
Cer. Filt.
to VCC
1
0.1
10 k
0.001
0.01
Recovered
Audio
FSK Data Output
(optional)
17
18
19
20
22
24
23
Carrier
Detect
455 kHz
LC Resonator
39 k
10 k
51 k
100 k
CD Adjust
0.1
0.1
0.1
10.245, Fund. Mode
32 pF Load
VCC = 2.0 to 7.0 Vdc
CRF1
120 p
50 p
RF Input
49.67 MHz
50
1000 p
0.47
μ
+
VCC
33 p
Varactor Control
(keep 0.7 V
V23
VCC)
9
10
11
12
16
4
5
6
8.2 k
15
14
13
7
8
21
455 kHz
Cer. Filt.
0.68
μ
Figure 10A. Crystal Oscillator Configuration for Single Channel Application
21
22
0.68
μ
38.97 MHz
VCC
300
20 k
20 k
23
3
1
2
18 p
Figure 10. PC Board Test Circuit
(LC Oscillator Configuration Used in PLL Synthesized Receiver)
First Local Oscillator
Buffered Output
Crystal used is series mode resonant
(no load capacity specified), 3rd overtone.
This method has not proven adequate for
fundamental mode, 5th or 7th overtone crystals.
The inductor and capacitor will need to be
changed for other frequency crystals. See
AN980 for further information.
M
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