th7108 ETC-unknow, th7108 Datasheet - Page 6

• Manufacturer Part Number: th7108
• Description: 868/915mhz Transmitter Source
• Manufacturer: ETC-unknow

AC Characteristics
all parameters under normal operating conditions, unless otherwise stated;
typical values at T
ENTX = 1, V
Output Power Selection
typical values at T
ENTX = 1, f
If the transmitter is operated at any supply voltage V
the values for R
Crystal Parameter
TH71082 Data Sheet
3901071082
Output power
FM deviation
Modulation frequency FM
Data rate ASK
Reference spurs
Harmonic content
Spurious output signal
Phase noise
VCO gain
Charge pump current
Clock voltage swing
Start-up time
Crystal frequency
Load capacitance
Static capacitance
Resonance resistance
Spurious response
P
P
R1 / k
R2 / k
harm
I
V
cc
o
PS
/ dBm
/ mA
/ dBm
Parameter
Parameter
/ V
c
PS
= 868.3 MHz, test circuit shown in Fig. 2
= 1.1V, f
1
and R
a
a
= 23 °C and V
= 23 °C and V
12.5
-2
-40
0
2
2
c
can be calculated as allows:
= 868.3 MHz, test circuit shown in Fig. 2
Symbol
Symbol
V
P
f
R
K
C
a
CKOUT
crystal
f
P
P
PN
R
I
P
mod
t
C
harm
VCO
spur
f
ASK
CP
load
on
ref
off
cc
FM
cc
m
o
0
= 3 V;
= 3 V:
7.5
4.7
1.1
9.5
-5
-40
adjustable with
varactor and V
@ f
@ 2f
V
@ f
C
from ”all OFF” to any
other mode
fundamental mode, AT
PS
load
c
c
c
= 5pF
0.1V
Condition
, 3f
500kHz
f
Condition
ref
c
Page 6 of 10
, 4f
cc
4.7
0.9
8.5
11
-8
-40
,
c
FM
ASK Transmitter / LO Source
R
1
Min
4.7
0.7
7.8
-11
15
-45
Min
R
25
10
2
V
V
Typ
300
PS
-44
-40
-60
-87
cc
40
260
-4
5
2
6
1
-15
4.7
0.5
7.0
24
-45
Max
-10
29
15
40
TH71082
7
Max
0.9
868/915MHz
Dec. 2001
Rev. 004
MHz
4.7
0.3
6.2
-18
Unit
dBc/Hz
MHz/V
43
-50
dB
pF
pF
kbit/s
dBm
dBm
dBm
dBm
Unit
kHz
kHz
V
ms
µA
pp