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摘要：MAX2550是完整的单芯片无线收发器，用于UMTS 1波段毫微微蜂窝(femtocell)应用。RD2550参考设计基于MAX2550和所有相关元件，设计并构建成极具竞争力的无线解决方案，支持基站收发信机(BTS)。工作频率范围：1920MHz至1980MHz (Rx)和2110MHz至2170MHz (Tx)。RD2550参考设计还支持周围宏蜂窝基站的下行信号检测，允许系统选择最佳的工作环境(功率、规范、频率、容量等)。
综述
该设计中,MAX2550作为主要的射频(RF)收发器，配合必要的外部元件构成完整的射频前端。外部元件包括：功率放大器、双工器、TCXO和无源器件。Maxim随RD2550参考设计提供一套完整的文件包，其中包括符合3GPP TS25.104家庭基站标准的测试报告。除RD2550外，我们还提供RD2551、RD2552、RD2553参考设计，分别基于MAX2551、MAX2552和MAX2553收发器构建，覆盖其它频带和标准。总之，您可以从Maxim获得高集成的单芯片毫微微蜂窝收发器，覆盖WCDMA 1-6波段和8-10波段，以及cdma2000 波段0、1和10。
| RD2550参考设计性能测试结果
| | 上行链路
| | 说明
| 规格
| Maxim射频器件性能
| | 频率带宽
| 1920MHz to 1980MHz
| Band 1
| | Rx灵敏度
| -107dBm
| Exceeds
| | ACS
| -101dBm
| Exceeds
| | 阻塞(1900MHz - 2000MHz)
| -101dBm
| Exceeds
| | 阻塞(1MHz - 12,750MHz，1900MHz - 2000MHz除外)
| -101dBm
| Exceeds
| | 互调
| -101dBm
| Exceeds
| | 下行链路
| | 说明
| 规格
| 测试性能
| | 频率带宽
| 2110MHz to 2170MHz
| Band 1
| | 最大输出功率
| Less than +24dBm
| 外部PA
| | ACLR
| -45dB/-50dB
| Exceeds
| | 误差向量幅度
| 17.5%/12.5%
| Exceeds
|
BOM
| | 数量
| 数值
| 说明
| 元件标号
| 型号
| 制造商
| | 电容
| | 1
| 14
| 1000pF
| 0402 Capacitor
| C1, C13, C15, C19, C28, C86, C87-90, C190, C196, C204, C216
| GRM155R71H102K
| Murata
| | 2
| 6
| 100nF
| 0402 Capacitor
| C10, C12, C22, C33, C54, C77
| GRM155R61A104K
| Murata
| | 3
| 1
| 47?F
| 1206 Capacitor
| C34
| GRM32ER61C476K
| Murata
| | 4
| 7
| 1.0?F
| 0402 Capacitor
| C16, C46, C85, C91, C92, C126, 205
| GRM155R60J105K
| Murata
| | 5
| 1
| 10?F
| 1206 Capacitor
| C32
| GRM31CR60J106K
| Murata
| | 6
| 4
| 2.2?F
| 0603 Capacitor
| C17, C38, C55, C79
| GRM21BR60J225K
| Murata
| | 7
| 6
| 10nF
| 0402 Capacitor
| C5, C26, C37, C57, C67, C123
| GRM155R71E103K
| Murata
| | 8
| 12
| 100pF
| 0402 Capacitor
| C2, C3, C4, C8, C18, C23, C24, C51, C83, C217, C193, C214
| GRM1555C1H101J
| Murata
| | 9
| 4
| 0.47?F
| 0402 Capacitor
| C27, C58, C213, C215
| GRM155R71C474K
| Murata
| | 10
| 4
| 82pF
| 0402 Capacitor
| C41, C50, C69, C81
| GRM1555C1H820J
| Murata
| | 11
| 1
| 2.7pF
| 0402 high Q Capacitor
| C25
|
| Johanson
| | 12
| 1
| 2.4pF
| 0402 high Q Capacitor
| C29
|
| Johanson
| | 13
| 1
| 1.0pF
| 0402 Capacitor
| C56
| GRM1555C1H1R0B
| Murata
| | 14
| 1
| 68pF
| 0402 Capacitor
| C94
| GRM1555C1H680J
| Murata
| | 15
| 2
| 3.3nF
| 0402 Capacitor
| C45, C197
| GRM155R71E332K
| Murata
| | 16
| 1
| 22pF
| 0402 Capacitor
| C35
| GRM1555C1H220J
| Murata
| | 17
| 2
| 68nF
| 0402 Capacitor
| C43, C198
| GRM155R71E683K
| Murata
| | 18
| 1
| 33pF
| 0402 Capacitor
| C65
| GRM1555C1H330J
| Murata
| | 19
| 1
| 1.3nH
| 0402 Capacitor
| C39
| LQG15HN1N3S02
| Murata
| | 20
| 0
| Open
| 0402 Capacitor
| C7, C9, C20, C21, C31, C40, C42, C49, C52, C53, C59, C47, C48, C60, C68, C70, C72, C80, C82
| Open
|
| | 21
| 1
| 5.1nH
| 0402 Inductor
| C36
| LQG15HN5N1S02
| Murata
| | 22
| 1
| 9.1nH
| 0402 Inductor
| C14
| LQG15HN9N1J02
| Murata
| | 23
| 1
| 4.3nH
| 0402 Inductor
| C11
| LQG15HN4N3S02
| Murata
| | 24
| 2
| 4.7?F
| 0805 Capacitor
| C6, C30
| GRM21BR60J475K
| Murata
| | 25
| 4
| 2.2?F
| 0603 Capacitor
| C17, C38, C55, C79
| GRM21BR60J225K
| Murata
| | 26
| 1
| 200mA
| 0603 Ferrite Bead
| L2
| BLM18HK471SN1
| Murata
| | 27
| 3
| 400mA
| 0603 Ferrite Bead
| L14, L22, L24
| BLM18PG330SN1
| Murata
| | 电阻
| | 28
| 14
| 0
| 0402 Resistor
| R2, R8, R9, R33, R36, R37, R41-44, R47-49, R55
|
|
| | 29
| 1
| 4.7K
| 0402 Resistor
| R10
|
|
| | 30
| 1
| 430
| 0402 Resistor
| R18
|
|
| | 31
| 1
| 10
| 0402 Resistor
| R22
|
|
| | 32
| 2
| 220
| 0402 Resistor
| R23, R115
|
|
| | 33
| 1
| 270
| 0402 Resistor
| R27
|
|
| | 34
| 1
| 1K
| 0402 Resistor
| R45
|
|
| | 35
| 1
| 50
| 0402 Resistor
| R28
|
|
| | 36
| 0
| Open
| 0402 Resistor
| R1, R3, R5-7, R11-17, R19-21, R24-26, R29-32, R34, R35, R38-40, R46, R50, R51, R52, R53, R54, R310, R311
|
|
| | 37
| 1
| 100
| 0402 Resistor
| R4
|
|
| | 电感
| | 38
| 3
| 5.6nH
| 0402 Inductor
| L9, L10, L23
| LQG15HN5N6S02
| Murata
| | 39
| 1
| 1nH
| 0402 Inductor
| L25
| LQG15HN1N0S02
| Murata
| | 40
| 1
| 4.3nH
| 0402 Inductor
| L13
| LQG15HN4N3S02
| Murata
| | 41
| 5
| 0Ω
| 0402 Resistor
| L3, L17-20
|
|
| | 42
| 0
| OPEN
| 0402 Inductor
| L1, L4, L5, L6-8, L11, L12, L15, L21, L16
| OPEN
|
| | 43
| 1
| OPEN
| NPN Transistor
| Q301
| 2SC4617
| ROHM
| | IC和连接器
| | 44
| 1
| Dual SAW
| EGSM/DCS RF SAW
| FL3
| LX14
| EPCOS
| | 45
| 1
| RX SAW
| 2140MHz
| FL5
| B9451
| EPCOS
| | 46
| 1
| TX SAW
| 1950MHz RF SAW
| FL8
| B9414
| EPCOS
| | 47
| 1
| Duplexer
| Band1 Fbar Duplexer
| FL4
| ACMD7614
| Avago
| | 48
| 1
|
| LOW POWER LINEAR AMPLIFIER
| U2
| RMX2550M
| Richwave
| | 49
| 1
|
| Low Noise Low Dropout Linear
| U14
| MAX8510EXK33
| Maxim
| | 50
| 0
| OPEN
| QUAD LVDS
| U4
| MAX9173EUE
| Maxim
| | 51
| 1
|
| 5 Band UMTS Transmitter
| U1
| MAX2550
| Maxim
| | 52
| 1
|
| Low Noise Low Dropout Linear
| U3, U5
| MAX8887EZK33
| Maxim
| | 53
| 1
|
| 100 Pin Connector
| J3
| QSS-050-01-F-D-A-K
| SAMTEC
| | 54
| 1
|
| RF Switch, SP2T
| SW1
| UPG2009
| NEC
| | 55
| 1
| 19.2MHz
| TCXO 19.2MHz
| Y1
| M0101-T-002-3
| Taitien
| | 56
| 0
| OPEN
| Single pull 3 throw switch
| SW2
| XM0825SF-TL1301
| Murata
| | 57
| 3
| Connector
| SMA Connector
| J1, J6, J7
| 142-0711-846
| Johanson
| | 58
| 1
| Test point Red
| VCC
| J4
| 5000
| Keystone
| | 59
| 1
| Test point Black
| GND
| J5
| 5001
| Keystone
|
实物展示
原理图一
原理图二 |
雷达卡
发表于 2014-10-11 17:40:05
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