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PDF TH7107 Data sheet ( Hoja de datos )
| Número de pieza | TH7107 | |
| Descripción | FSK/FM/ASK Transmitter | |
| Fabricantes | Melecis | |
| Logotipo |  |
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TH7107
315/433MHz
FSK/FM/ASK Transmitter
Features
! Fully integrated, PLL-stabilized VCO
! Flexible frequency range from 310 MHz to 450 MHz
! FSK through crystal pulling allows modulation from
DC to 20 kbit/s
! High FSK deviation possible for wideband data
transmission
! ASK achieved by on/off keying of internal
power amplifier
! FM possible with external varactor
! Wide power supply range from 2.2 V to 5.5 V
! High over-all frequency accuracy
! Very low standby current
! Adjustable output power range from
-12 dBm to +2 dBm
! Adjustable current consumption from
4.8 mA to 11.5 mA
! FSK deviation and center frequency
independently adjustable
! Differential output well-suited for loop
antenna
! External clock available for µC drive,
down to 1.9 V supply
! ”Clock only” mode
! Conforms to EN 300 220 and similar
standard
Ordering Information
Part No.
TH7107
Temperature Range
-40 C° to 85 °C
Package
SOIC16
Application Examples
! Keyless car and central locking
! Low-power telemetry
! Alarm and security systems
! General digital data transmission
! General analog audio signal transmission
Pin Description
LF1 1
SUB 2
DATA 3
RO2 4
RO1 5
ENTX 6
ENCK 7
CKOUT 8
TH7107
16 LF2
15 VCC
14 VEE
13 OUT1
12 OUT2
11 VEE
10 VCC
9 PS
3901007107
Rev. 005
Page 1 of 14
Data Sheet
Dec. 2001
1 page  
TH7107
315/433MHz
FSK/FM/ASK Transmitter
Pin No. Name
8 CKOUT
I/O Type
output
9 PS
analog I/O
10 VCC
11 VEE
12 OUT2
supply
ground
output
Functional Schematic
CKOUT
8
200Ω
20µA
PS 200Ω
9
VCC
VCC
Description
clock output,
CMOS-compatible
power-select and ASK input,
high-impedance comparator
logic
positive power supply
negative power supply
differential power amplifier
output, open collector
13 OUT1
14 VEE
15 VCC
16 LF2
output
OUT2
12
ground
supply
input
VEE
LF2
16
OUT1
13 differential power amplifier
output, open collector
VEE
VEE
200Ω
5p
negative power supply
positive power supply
VCO tuning input,
connection from loop filter
3901007107
Rev. 005
Page 5 of 14
Data Sheet
Dec. 2001
5 Page 
TH7107
315/433MHz
FSK/FM/ASK Transmitter
Spectrum Plots
All plots depict TH7107‘s typical performance at Vcc = 3.0 V and Ta = 23 °C,
derived with the test circuit shown in Fig. 4.
Fig. 5: RF output signal and spurious emissions, CW mode (DATA = HIGH)
Fig. 6: Single-sideband phase noise at 500 kHz offset, CW mode (DATA = HIGH)
3901007107
Rev. 005
Page 11 of 14
Data Sheet
Dec. 2001
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TH7107.PDF ] | |
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