CMOSTEK CMT2300A - Settle Time; Frequency Synthesizer Specifications

CMT2300A
Rev 1.0 | Page8/46
www.cmostek.com
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
F
RF
= 433 MHz
[1]
H3
433
3
nd
harmonic +20 dBm P
OUT
-50
dBm
Harmonic output for
F
RF
= 868 MHz
[1]
H2
868
2
nd
harmonic +20 dBm P
OUT
-43
dBm
H3
868
3
nd
harmonic +20 dBm P
OUT
-52
dBm
Harmonic output for
F
RF
= 915 MHz
[1]
H2
868
2
nd
harmonic +20 dBm P
OUT
-48
dBm
H3
868
3
nd
harmonic +20 dBm P
OUT
-53
dBm
Harmonic output for
F
RF
= 433 MHz
[1]
H2
433
2
nd
harmonic +13 dBm P
OUT
-52
dBm
H3
433
3
nd
harmonic +13 dBm P
OUT
-52
dBm
Harmonic output for
F
RF
= 868 MHz
[1]
H2
868
2
nd
harmonic +13 dBm P
OUT
-52
dBm
H3
868
3
nd
harmonic +13 dBm P
OUT
-52
dBm
Harmonic output for
F
RF
= 915 MHz
[1]
H2
868
2
nd
harmonic +13 dBm P
OUT
-52
dBm
H3
868
3
nd
harmonic +13 dBm P
OUT
-52
dBm
1.6 SettleTime
Table 6. SettleTime
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
Note:
[1]. T
SLP-RX
is dominated by the crystal oscillator startup time, which depends on its own characteristics.
1.7 Frequency Synthesizer
Table 7. Frequency Synthesizer Specifications
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Frequency range
F
RF
Need different matching networks
760
1020
MHz
380
510
MHz
190
340
MHz
127
170
MHz
Frequency resolution
F
RES
25
Hz
Frequency tuning time
t
TUNE
150
us
Phase noise@ 433
MHz
PN
433
10 kHz frequency deviation
-94
dBc/Hz
100 kHz frequency deviation
-99
dBc/Hz
500 kHz frequency deviation
-118
dBc/Hz
1MHz frequency deviation
-127
dBc/Hz
10 MHz frequency deviation
-134
dBc/Hz
Phase noise@ 868
PN
868
10 kHz frequency deviation
-92
dBc/Hz