th7122 Melexis Company, th7122 Datasheet - Page 29

• Manufacturer Part Number: th7122
• Description: Transceiver - 27 To 930mhz, Fsk/fm/ask, Multi-channel Lqfp32
• Manufacturer: Melexis Company

6.4
6.5
all parameters under normal operating conditions, unless otherwise stated; all parameters based on test
circuits for FSK (Fig. 14 to 15) and ASK (Fig. 16 to 17), respectively;
39010 07122
Rev. 008
Channel
switching time
TX – RX switching time
Input sensitivity
ASK
Input sensitivity
FSK
Maximum input
signal
ASK
Maximum input
signal
FSK
Start-up time - ASK
Start-up time - FSK
Spurious emission
PLL Synthesizer Timings
AC Characteristics of the Receiver Part
Parameter
Parameter
wide band
narrow band
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
= 433.92MHz
= 868.3MHz
= 433.92MHz
= 868.3MHz
= 433.92MHz
= 868.3MHz
= 433.92MHz
= 868.3MHz
= 433.92MHz
= 868.3MHz
= 433.92MHz
= 868.3MHz
= 433.92MHz
= 868.3MHz
= 433.92MHz
= 868.3MHz
t
t
t
P
P
P
P
P
P
P
P
t
t
P
SW_WB
SW_NB
TX_RX
on_ASK
on_FSK
Symbol
Symbol
minL_ASK
minH_ASK
minL_FSK
minH_FSK
maxL_ASK
maxH_ASK
maxL_FSK
maxH_FSK
spur_RX
B
I
B
I
IF = 10.7MHz
B
BER ≤ 3⋅10
LNA @ low gain
B
BER ≤ 3⋅10
LNA @ high gain
B
Δf = ± 50 kHz
BER ≤ 3⋅10
LNA @ low gain
B
Δf = ± 50 kHz
BER ≤ 3⋅10
LNA @ high gain
LNA @ low gain
LNA @ high gain
LNA @ low gain
LNA @ high gain
from standby to receive
mode
from standby to receive
mode
referred to receiver
input
CP
CP
PLL
PLL
IF
IF
IF
IF
Page 29 of 44
= 260µA
= 260µA
= 150kHz, f
= 150kHz, f
= 150kHz, f
= 150kHz, f
= 20kHz,
= 2kHz,
Condition
Condition
-3
-3
-3
-3
m
m
m
m
= 2kHz
= 2kHz
= 2kHz
= 2kHz
FSK/FM/ASK Transceiver
Min
Min
-107
-107
-105
-105
Typ
Typ
200
500
-96
-96
-87
-87
-10
-10
-20
-20
-10
-10
-20
-20
-54
1
1
1
27 to 930MHz
TH7122
Max
Max
1.5
1.5
Data Sheet
June/07
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
Unit
Unit
ms
ms
ms
µs
µs