参数资料
型号: SX1212IWLTRT
厂商: Semtech
文件页数: 74/77页
文件大小: 0K
描述: IC TXRX 300MHZ-510MHZ 32-TQFN
标准包装: 1
频率: 300MHz ~ 510MHz
数据传输率 - 最大: 150kbps
调制或协议: FSK,OOK
应用: AMR,ISM,家庭自动化,程序控制
功率 - 输出: 12.5dBm
灵敏度: -110dBm
电源电压: 2.1 V ~ 3.6 V
电流 - 接收: 3mA
电流 - 传输: 25mA
数据接口: PCB,表面贴装
天线连接器: PCB,表面贴装
工作温度: -40°C ~ 85°C
封装/外壳: 32-TQFN
包装: 标准包装
产品目录页面: 584 (CN2011-ZH PDF)
其它名称: SX1212IWLDKR
SX1212
ADVANCED COMMUNICATIONS & SENSING
The layers description is illustrated in Figure 57:
Signal (35um)
Isolation (FR4, 1.6mm)
Ground plane
Figure 57: Reference Design‘s Stackup
The layout itself is illustrated in Figure 58. Please contact Semtech for Gerber files.
19mm
9mm
Figure 58: Reference Design Layout (top view)
7.5.3. Bill Of Material
Table 35: Reference Design BOM
Ref
Value
Tol (+/-)
Techno
Size
Comment
330MHz
434MHz
U1
U2
Q1
SX1212
330 MHz 434 MHz
12.8 MHz
-
-
15 ppm at 25°C
Transceiver IC
SAW Filter
AT-cut
TQFN-32
3.8*3.8 mm
5.0*3.2 mm
-
Plotted in section 7.5.4
Fundamental, Cload=15 pF
20 ppm over -40/+85°C
2ppm/year max
R1 1% -
R2 1% -
C1 15% X5R
0402
0402
0402
PA regulator
Loop filter
VDD decoupling
C2
C3
C4
15%
10%
10%
X5R
X7R
X7R
0402
0402
0402
Top regulator decoupling
Digital regulator decoupling
PA regulator decoupling
C5 10% X7R
C6 10% X7R
C7 5% NPO
C8 0.25 pF NPO
0402
0402
0402
0402
VCO regulator decoupling
Loop Filter
Loop Filter
Matching
C9
L1, L2
5%
0.2 nH
NPO
Wire wound
0402
0402
DC block and L4 adjust
VCO tank inductors
L3 5% Wire wound
L4 5% Multilayer
0402
0402
PA Choke
Matching
C10, C11
C12*
-
5%
-
NPO
0402
0402
-
DC block
*Not part of the ref. design (not required for direct antenna connection).
Note: for battery powered applications, a high value capacitance should be implemented in parallel with C1
(typically 10 μF) to offer a low impedance voltage source during startup sequences.
Rev 2 – June 18th, 2009
Page 74 of 77
www.semtech.com
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