XE1205I074TRLF Просмотр технического описания (PDF) - Semtech Corporation
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XE1205I074TRLF
Semtech Corporation
XE1205I074TRLF Datasheet PDF : 48 Pages
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XE1205
Symbol
ACR_25
ACR_50
BR
RFOP
ACP
FR
Description
Receiver adjacent channel rejection
ratio at 25 kHz
Receiver adjacent channel rejection
ratio at 50 kHz
Bit rate
RF output power
Conditions
funw = fLO + 25 kHz single tone
Pw=-110 dBm, mode A
BW (SSB) = 10 kHz
BW (SSB) = 8 kHz (2)
funw = fLO + 50 kHz single tone
Pw=-110 dBm, mode A
Programmable
Programmable
RFOP1
RFOP2
RFOP3
RFOP4
Transmitter adjacent channel power Pre-filter enabled
(measured at 25 kHz offset)
(RFOP3 mode)
Measurement conditions as
defined by EN 300 220-1 V1.3.1
Synthesizer frequency range
Programmable
TS_SRE Receiver wake-up time
TS_STR Transmitter wake-up time
TS_FS Frequency synthesizer wake-up
time
TS_RE Receiver wake-up time
TS_TR Transmitter wake-up time
TS_RFSW Receiver recovery time when
switching between 2 channels
TS_TFSW Transmitter recovery time when
switching between 2 channels
TS_RSSI RSSI wake-up time
TS_OS Quartz oscillator wake-up time
TS_FEI
XTAL
FSTEP
VTHR
FEI wake-up time
Quartz oscillator frequency
Frequency synthesizer step
Equivalent input thresholds
of the RSSI
Quartz oscillator enabled
Quartz oscillator enabled
Quartz oscillator enabled
Frequency synthesizer enabled
Frequency synthesizer enabled
Between 2 channels at 1 MHz
from each other
Between 2 channels at 1 MHz
from each other
Receiver enabled
Fundamental
3rd overtone
Receiver enabled
Fundamental or third harmonic
Exact step is XTAL / 77’824
Mode A(5), low range:VTHR1
VTHR2
VTHR3
Mode A, high range:VTHR1
VTHR2
VTHR3
SPR
VIH
VIL
VOH
VOL
Spurious emission in receiver mode (3)
Digital input level high
% VDD
Digital input level low
% VDD
Digital output level high
% VDD
Digital output level low
% VDD
Min Typ Max
Unit
-
20
-
dBc
-
30
-
dBc
-
40
-
dBc
1.2
-
304.7(4) kbit/s
-3
0
-
+2 +5
-
+7 +10
-
+12 +15
-
-
-
-37
dBm
dBm
dBm
dBm
dBm
433 -
435
863 -
870
902 -
928
- 700 850
- 250 350
- 200 250
- 500 600
- 100 150
- 700
- 150 250
-
-
1.5
-
1
2
-
7
-
- 2/BR
-
-
39
-
- 500
-
- -110
-
- -105
-
- -100
-
-
-95
-
-
-90
-
-
-85
-
-
-65
-
75
-
-
-
-
25
75
-
-
-
-
25
MHz
MHz
MHz
us
us
us
us
us
us
us
ms
ms
ms
ms
MHz
Hz
dBm
dBm
dBm
dBm
dBm
dBm
dBm
%
%
%
%
Table 4: Electrical Specifications
(1) Additional bandwidths can be selected with special settings described in section 7.2.8.
(2) With additional bandwidth configuration register settings as described in sections 5.2.6 and 7.2.8.
(3) SPR strongly depends on the design of the application board and the choice of the external components. Values down to -70 dBm can be
achieved with careful design.
(4) 304.7 kbit/s achievable with additional register settings as described in section 6. The 304.7kpbs max bit rate is guaranteed by validation.
The max bit rate guaranteed by production test is 152.3 kbit/s
(5) RSSI also available in mode B with higher thresholds as described in section 5.2.3.4
© Semtech 2008
www.semtech.com
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