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参数资料
| 型号： | MAX2904 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands |
| 中文描述： | 200mW、单片发送器IC，用于868MHz/915MHz ISM频段 |
| 文件页数： | 8/13页 |
| 文件大小： | 352K |
| 代理商： | MAX2904 |
E
used to control the power of the transmitter. Changing
the values of the resistors R
RLPF
and R
PWRSET
vary the
modulation filter characteristics and output power level,
respectively. Refer to the MAX2900
–
MAX2904 data
sheet for details.
Output Power Adjustment
The MAX2900
–
MAX2904 EV kits are tuned for specific
output powers. For example, the MAX2900 EV kit is
tuned for 23dBm at a 4.5V supply voltage. If other out-
put power levels are desired, the user must modify
some EV kit components. This section, intended as a
guide only, provides instructions for tuning the EV kits
at different power levels.
To achieve a different output power, modify R
PWRSET
(R8) first. This resistor sets the bias current, which also
controls efficiency and output power. To decrease out-
put power, increase the value of R8. For more informa-
tion, refer to the MAX2900
–
MAX2904 data sheet.
The output-matching network also must be changed to
appropriate output power levels. For lower power lev-
els, increase C15 and C16 capacitor values. To main-
tain the same LC filter corner frequency, change L3,
L4, C33, and C34 accordingly. To achieve optimum
performance, all component values must be tuned in
the lab. Use the EV kit schematics as a guideline.
Layout Issues
A good PC board is an essential part of an RF circuit
design. The EV kit PC board can serve as a guide for
laying out a board using the MAX2900
–
MAX2904. Keep
traces carrying RF signals as short as possible to mini-
mize radiation and insertion loss. Use impedance con-
trol on all RF signal traces. The V
CC
node on the PC
board should have decoupling capacitors to the clos-
est ground. Refer to the
Layout
section of the
MAX2900
–
MAX2904 data sheet for more information.
MAX2900–MAX2904 Evaluation Kits
8
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相关PDF资料 |
PDF描述 |
|---|---|
| MAX2904EVKIT | Evaluation Kits for the MAX2900/MAX2901/MAX2902/MAX2903/MAX2904 |
| MAX296ESA | Analog Filter |
| MAX2901EGI | 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands |
| MAX2900EGI | 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands |
| MAX2902EGI | 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2904EGI | 功能描述:射频发射器 200mW Sngl-Chip Txr 868/915MHz ISM Bands RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel |
| MAX2904EGI-T | 功能描述:射频发射器 200mW Sngl-Chip Txr 868/915MHz ISM Bands RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel |
| MAX2904ETI+ | 功能描述:射频发射器 200mW Sngl-Chip Txr 868/915MHz ISM Bands RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel |
| MAX2904ETI+T | 功能描述:射频发射器 200mW Sngl-Chip Txr 868/915MHz ISM Bands RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel |
| MAX2904EVKIT | 功能描述:射频开发工具 MAX2900-04 Eval Kit RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
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