TH71081(2001) 데이터 시트보기 (PDF) - Melexis Microelectronic Systems
부품명
상세내역
제조사
TH71081 Datasheet PDF : 10 Pages
| |||
TH71081
868/915MHz
ASK Transmitter / LO Source
AC Characteristics
all parameters under normal operating conditions, unless otherwise stated;
typical values at Ta = 23 °C and Vcc = 3 V;
ENTX = 1, VPS = 1.1V, fc = 868.3 MHz, test circuit shown in Fig. 2
Parameter
Symbol
Condition
Min
Output power
FM deviation
Modulation frequency FM
Data rate ASK
Reference spurs
Harmonic content
Spurious output signal
Phase noise
VCO gain
Charge pump current
Start-up time
Po
∆fFM
fmod
RASK
Pref
Pharm
Poff
PN
KVCO
ICP
ton
adjustable with
varactor and VFM
NRZ
@ fc ± fref
@ 2fc , 3fc , 4fc
VPS ≤ 0.1V
@ fc ± 500kHz
from ”all OFF” to any
other mode
Typ
-2
±6
5
40
-44
-40
-60
-87
300
±260
Max
Unit
dBm
kHz
kHz
kbit/s
dBm
dBm
dBm
dBc/Hz
MHz/V
µA
0.9
ms
Output Power Selection
typical values at Ta = 23 °C and Vcc = 3 V:
ENTX = 1, fc = 868.3 MHz, test circuit shown in Fig. 2
R1 / kΩ
0
7.5
11
R2 / kΩ
4.7
4.7
VPS / V
≥2
1.1
0.9
Icc / mA
Po / dBm
Pharm / dBm
12.5
1
≤-40
9.5
-2
≤-40
8.5
-5
≤-40
15
4.7
0.7
7.8
-8
≤-45
24
4.7
0.5
7.0
-12
≤-45
If the transmitter is operated at any supply voltage Vcc,
the values for R1 and R2 can be calculated as allows:
R1
= R2
•
Vcc
VPS
− 1
Crystal Parameter
Parameter
Symbol
Condition
Min
Crystal frequency
fcrystal fundamental mode, AT
25
Load capacitance
Cload
10
Static capacitance
C0
Resonance resistance
Rm
Spurious response
aspur
Max
29
15
7
40
-10
43
4.7
0.3
6.2
-15
≤-50
Unit
MHz
pF
pF
Ω
dB
3901071081
Rev. 004
Page 6 of 10
Data Sheet
Dec. 2001
Share Link: 