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参数资料
| 型号： | MAX2903 |
| 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： | 7/13页 |
| 文件大小： | 352K |
| 代理商： | MAX2903 |
Connections and Setup
This section provides step-by-step instructions for get-
ting the EV kits up and running in all operation modes.
1) Verify that shunts JU1, JU2, JU4, JU6, JU7, and
JU9 are in place.
2) Set the power supply to +4V and turn it off.
3) Set the adjustable power supply to +2.1V and turn it off.
4) Connect the ground terminal to GND.
5) Connect the positive +4.0V terminal to VCC.
6) Connect the positive terminal of the adjustable
power supply to VASK.
7) Set the IF generator to 14.56MHz and set the output
level to 200mV. Keep the IF generator output off.
8) Use an SMA cable to connect the output of the IF
generator to the REFIN on the MAX2900
–
MAX2904
EV kits.
9) Use an SMA cable to connect the RFOUT to the
input of the spectrum analyzer.
10) Set the spectrum analyzer to view the output.
11) Turn on all power supplies and enable the signal
generator.
12) Measure the supply current.
13) Observe the RF output frequency displayed on the
spectrum analyzer.
14) Measure the RF output power.
15) The RF output power should be approximately
23dBm after accounting for cable and connector loss.
Adjustments and Control
Operation Modes
The EV kits support four modes of operation:
SHUTDOWN mode
—
EN = REFEN = low. (Shunt
pins 2 and 3 of JU1, JU2).
SYNTH mode
—
EN = REFEN = high, OOKIN = low.
(Shunt pins 1 and 2 of JU1, JU2; shunt pins 2 and 3 of JU4).
TRANSMIT mode
—
EN = REFEN = OOKIN = high.
(Shunt pins 1 and 2 of JU1, JU2, JU4).
REFERENCE only mode
—
REFEN = high, EN = low.
(Shunt pins 2 and 3 of JU1. Shunt pins 1 and 2 of JU2).
See Table 1 for jumper selection.
Modulations
The IC supports various modulation modes:
BPSK is obtained through the MODIN pin (JU3).
OOK is obtained digitally with the OOKIN pin (JU4).
ASK is obtained through the VASK pin.
FM is imposed on the VCO or the reference.
Synthesizer Programming
(MAX2900/MAX2901/MAX2903)
The three pins D0, D1, D2 (JU6, JU7, and JU9) are
used as digital entries to program the synthesizer divi-
sion ratios (MAX2900). For MAX2901/MAX2903, pin
DIV63 (JU9) is used to select the division ratio of 62 or
63. Refer to the MAX2900
–
MAX2904 data sheet for cor-
responding division ratios.
Modulation Filter and Power Management
The RLPF input controls the modulation filter center fre-
quency. Pins PWRSET and VASK are analog inputs
E
MAX2900–MAX2904 Evaluation Kits
_______________________________________________________________________________________
7
JUMPER
MAX2900
MAX2901/
MAX2903
MAX2902/
MAX2904
NAME
DESCRIPTION
1
2
3
4
1
2
3
4
—
6/7
8
—
9
—
1
2
3
4
—
6/7
8
—
—
9
EN
Chip Enable
Reference Enable
BPSK Modulation Input
OOK Modulation Input
Digital Synthesizer Programming Input
VCO Output
REF Output
Digital Synthesizer Programming Input
Digital Synthesizer Programming Input
Not Connected
REFEN
MODIN
OOKIN
D0/D1
VCO+/ VCO-
REFOUT
D2
DIV63
N.C.
6/7
—
8
9
—
—
Table 1. Jumper Description
相关PDF资料 |
PDF描述 |
|---|---|
| MAX2903EVKIT | Evaluation Kits for the MAX2900/MAX2901/MAX2902/MAX2903/MAX2904 |
| MAX2904 | 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands |
| MAX2904EVKIT | Evaluation Kits for the MAX2900/MAX2901/MAX2902/MAX2903/MAX2904 |
| MAX296ESA | Analog Filter |
| MAX2901EGI | 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2903EGI | 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 |
| MAX2903EGI-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 |
| MAX2903ETI+ | 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 |
| MAX2903ETI+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 |
| MAX2903EVKIT | 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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