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MAX2904

更新时间： 2024-11-18 23:46:03
品牌 Logo 应用领域
美信 - MAXIM ISM频段
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18页 756K
描述
200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands

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19-2145; Rev 0; 10/01  
200mW Single-Chip Transmitter ICs for  
868MHz/915MHz ISM Bands  
General Description  
Features  
The MAX2900–MAX2904 complete single-chip 200mW  
transmitters are designed for use in the 868MHz/  
915MHz frequency bands. The MAX2900/MAX2901/  
MAX2902 are compliant with the FCC CFR47 part 15.247  
902MHz to 928MHz ISM-band specifications. MAX2903/  
MAX2904 are compliant with the ETSI EN330-220 speci-  
fication for the European 868MHz ISM band.  
o Versions for U.S. 902MHz to 928MHz Band and  
European 868MHz Band  
o -7dBm to +23dBm Adjustable Differential RF  
Output Power  
o +23dBm Output Power at 4.5V, +20dBm Output  
Power at 3.0V  
o Support BPSK, OOK, ASK, and FM Modulations  
These transmitter ICs offer a high level of integration  
while minimizing the number of external components.  
This is achieved by full integration of the transmit modu-  
lator, power amplifier, RF VCO, 8-channel frequency syn-  
thesizer, and baseband PN sequence lowpass filter. By  
filtering the BPSK modulation, the spurious emissions are  
reduced, enabling up to eight independent transmit  
channels in the U.S. ISM band. Inputs are provided for  
spread-spectrum BPSK, ASK, and OOK. FM can be  
achieved by directly modulating the VCO. The devices  
are intended primarily for use with an external differential  
antenna.  
o Modulation Filter for Direct Sequence BPSK up to  
8Mchips/s  
o Fully Integrated VCO with On-Chip Tank  
o Extremely Low Frequency Pulling for OOK  
Modulation (typ 60kHz peak, 5kHz RMS)  
o Integrated Frequency Synthesizer for up to  
8 Channels (MAX2900)  
o +2.7V to +4.5V Supply Operation  
o Small 28-Pin QFN Package with Exposed Pad  
✕
(5mm 5mm)  
Ordering Information  
Applications  
PART  
TEMP. RANGE  
PIN-PACKAGE  
Automatic Meter Reading  
Wireless Security Systems/Alarms  
Wireless Sensors  
Wireless Data Networks  
Wireless Building Control  
MAX2900EGI  
-40°C to +85°C  
28 QFN-EP*  
MAX2901EGI  
MAX2902EGI  
MAX2903EGI  
MAX2904EGI  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
28 QFN-EP*  
28 QFN-EP*  
28 QFN-EP*  
28 QFN-EP*  
*Exposed pad  
Functional Diagrams/Pin Configurations  
VCC5  
27  
VCC5  
27  
CPOUT  
28  
DIV63 REFOUT VCC4 REFIN  
OSC  
22  
CPOUT  
28  
D2  
26  
REFOUT VCC4 REFIN  
OSC  
22  
26  
25  
24  
23  
25  
24  
23  
VCO+  
VCO-  
D0  
21  
20  
19  
21  
20  
19  
VTUNE  
VTUNE  
1
2
1
2
MAX2901/  
MAX2903  
MAX2900  
D1  
GND  
GND  
÷4  
CP  
CP  
3
3
VREG  
DIVOUT  
VREG  
N.C.  
DUAL-  
8-CHANNEL  
SYNTHESIZER  
CHANNEL  
REG  
REG  
4
5
6
7
18 GND  
4
5
6
7
18 N.C.  
VCC1  
RLPF  
VCC1  
RLPF  
(/62 OR /63)  
SYNTHESIZER  
RF+  
17  
RF+  
17  
RF-  
16  
RF-  
16  
EN  
EN  
GATE  
GATE  
GND  
15  
15 GND  
REFEN  
REFEN  
8
9
10  
11  
12  
13  
14  
8
9
10  
11  
12  
13  
14  
MODIN  
OOKIN  
LD  
MODIN  
LD  
VCC2  
VASK  
PWRSET  
VCC3  
VCC2  
VASK  
PWRSET  
VCC3  
OOKIN  
Functional Diagrams/Pin Configurations are continued at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...18

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