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| 型号： | SM1230E868 |
| 厂商： | Semtech |
| 文件页数： | 8/46页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL XMITTER FOR SX1230 |
| 设计资源： | SM1230 BOM SX1230 Eval Board Schematic |
| 标准包装： | 1 |
| 类型： | 发射器 |
| 频率： | 868MHz |
| 适用于相关产品： | SX1230 |
| 已供物品： | 板 |
| 产品目录页面： | 584 (CN2011-ZH PDF) |
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SX1230
Integrated Transmitter IC
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
2.4. Electrical Specifications
The table below gives the electrical specifications of the transmitter under the following conditions: Supply voltage = 3.3 V,
temperature = 25 °C, f XOSC = 32 MHz, f RF = 915 MHz, 2-level FSK modulation without prefiltering, D f = 5 kHz, bit rate = 4.8
kbit/s and output power = 13 dBm terminated in a matched 50 ohm impedance, unless otherwise specified.
Table 4
Transmitter Specifications
Symbol
Description
Conditions
Min
Typ
Max
Unit
Current Consumption
IDDSL
Supply current in sleep mode
-
0.5
1
μA
IDDST
IDDFS
Supply current in standby mode
Supply current in synthesiser
Crystal oscillator enabled
-
-
0.9
8
1.2
-
mA
mA
mode
IDDT
Supply current in transmit mode
with appropriate external match-
ing (see Section 7).
RF Power o/p = 17 dBm
RF Power o/p = 13 dBm
RF Power o/p = 10 dBm
RF Power o/p = 0 dBm
-
-
-
-
95
45
33
20
-
-
40
25
mA
mA
mA
mA
RF and Baseband Specifications
BRF
BRO
FDA
Bit rate, FSK
Bit rate, OOK
Frequency deviation, FSK
Programmable.
Programmable.
Programmable
1.2
1.2
0.6
-
-
-
600
32
300
kbps
kbps
kHz
RFOP
RF output power in 50 ohms
Programmable with 1 dB steps.
Max
Min
10
-21
13
-18
-
-
dBm
dBm
PHN
Transmitter phase noise
50 kHz Offset from carrier
-
-95
-
dBc/
Hz
RFOPH
Max RF output power with an
With external match to 50 ohms.
14
17
-
dBm
external impedance transforma-
tion
ACP
Transmitter adjacent channel
Pre-filter enabled. Measurement
-
-
-37
dBm
power (measured at 25 kHz off-
set)
conditions as defined by EN 300
220-1 V2.1.1.
FR
Synthesizer Frequency Range
Programmable.
FBand 1
FBand 2
FBand 3
290
431
862
-
-
-
340
510
1020
MHz
MHz
MHz
FSTEP
FRC
Frequency synthesizer step
RC Oscillator frequency range
FXOSC/2 19
-
45
61
65
-
85
Hz
kHz
Timing Specifications
TS_FS
Frequency synthesizer wake up
Crystal oscillator Enabled.
-
100
150
μs
time
SX1230, Revision 2 May 2009
?2008 Semtech Corp.
Page 8
www.semtech.com
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