CMT2300A
Rev1.0a | 8/50
www.cmostek.com
1.5 Transmitter
Table 5. Transmitter Specifications
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Output power
P
OUT
Need specific peripheral materials for
different frequency bands
-20
+20
dBm
Output power step
P
STEP
1
dB
GFSK Gaussian filter
coefficient
BT
0.3
0.5
1.0
-
Output power variation
P
OUT-TOP
Temperature from -40 to +85
C
1
dB
Stray radiation
P
OUT
= +13 dBm,433MHz, F
RF
<1 GHz
-42
dBm
1 GHz to 12.75 GHz, with harmonic
-36
dBm
Harmonic output for
F
RF
= 433 MHz
[1]
H2
433
2
nd
ha20 dBm P
OUT
-46
dBm
H3
433
3
nd
ha20 dBm P
OUT
-50
dBm
Harmonic output for
F
RF
= 868 MHz
[1]
H2
868
2
nd
ha20 dBm P
OUT
-43
dBm
H3
868
3
nd
ha20 dBm P
OUT
-52
dBm
Harmonic output for
F
RF
= 915 MHz
[1]
H2
868
2
nd
ha20 dBm P
OUT
-48
dBm
H3
868
3
nd
ha20 dBm P
OUT
-53
dBm
Harmonic output for
F
RF
= 433 MHz
[1]
H2
433
2
nd
ha13 dBm P
OUT
-52
dBm
H3
433
3
nd
ha13 dBm P
OUT
-52
dBm
Harmonic output for
F
RF
= 868 MHz
[1]
H2
868
2
nd
ha13 dBm P
OUT
-52
dBm
H3
868
3
nd
ha13 dBm P
OUT
-52
dBm
Harmonic output for
F
RF
= 915 MHz
[1]
H2
868
2
nd
ha13 dBm P
OUT
-52
dBm
H3
868
3
nd
ha13 dBm P
OUT
-52
dBm
Notes:
[1]. The harmonic parameter values mainly depend on the quality of the hardware matching network. The above data is
measured based on the CMT2300A-EM module.
1.6 Settling Time
Table 6. Settling Time
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Settle time
T
SLP-RX
From Sleep to RX
1000
us
T
SLP-TX
From Sleep to TX
1000
us
T
STB-RX
From Standby to RX
350
us
T
STB-TX
From Standby to TX
350
us
T
RFS-RX
From RFS to RX
20
us
T
TFS-RX
From TFS to TX
20
us
T
TX-RX
From TX to RX
（
Ramp Down time needs 2T
symbol
）
2T
symbol
+350
us
T
RX-TX
From RX to TX
350
us
Notes:
[1].
T
SLP-RX
and T
SLP-TX
depend on the crystal oscillator startup time, which is related to crystal characteristics.
