參數(shù)資料
型號: U2740B-BFP
英文描述: UHF AM/FM Transmitter
中文描述: 超高頻調(diào)幅/調(diào)頻發(fā)射機(jī)
文件頁數(shù): 7/10頁
文件大?。?/td> 264K
代理商: U2740B-BFP
U2740B
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A3, 24-Feb-97
7 (10)
Application Circuit (ASK Modulation)
16
1
15
14
13
12
11
10
9
2
3
4
5
6
7
8
Power–
up
f
:128
VCO
XTO
V
Ref
I
Ref
PA
2.2 pF
R
4
2.7 pF
I
4
V
S
L
osc
Loop antenna
R
16
I
16
I
14
I
13
I
S
I
11
I
10
R
14
10 k
C
10,
C
11
= 4.7 pF
1 nF
12 pF
10 nF
V
S
μ
C
Clock
Power–up
Data
V
S
Lock detect
13325
R
10
Figure 5.
Principle of Operation (ASK Modulation)
CS
(power-up)
XTO_out
AM_in
(data/power)
LD
RFout
Time
locked
1/fxtal
4/fxtal
13326
Figure 6.
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