參數(shù)資料
型號(hào): U2740B
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(yè)數(shù): 2/10頁(yè)
文件大小: 264K
代理商: U2740B
U2740B
TELEFUNKEN Semiconductors
Rev. A3, 24-Feb-97
Preliminary Information
2 (10)
Pin Description
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OSC1
OSC2
IC
LD
GND
FM_in
PD_out
XTAL2
AM_in
PAGND
ANT2
ANT1
V
S
CS
XTO_out
XTAL1
95 9700
Figure 2. Pinning
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
OSC1
OSC2
IC
LD
GND
FM_in
PD_out
XTAL2
XTAL1
XTO_out
CS
V
S
ANT1
ANT2
PAGND
AM_in
Function
VCO tank
VCO tank
Internally connected
Lock-detect (open collector)
Ground
FM modulation input
Phase detector output
FM modulation capacitor
XTAL
XTO output (open collector)
Chip-select (power-up)
Supply voltage
Differential output 1
Differential output 2
Power amplifier ground
AM modulation input
PD
PD
LD
:128
f
Power–up
VCO
CS
Loop
antenna
OSC1
OSC2
PA
AM_in ANT1
ANT2
Power
LD
CS
FM_in
Data
XTO_out
Clock
XTO
XTAL1
XTAL2
V
Ref
I
Ref
GND
V
S
PAGND
V
S
13324
μ
C
V
S
Figure 3. Block diagram
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