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700MHz to 1200MHz High-Linearity,
SPI-Controlled DVGA with Integrated Loopback Mixer
The 5 MSBs of the 10-bit word program attenuator A,
and the 5 LSBs of the 10-bit word program attenuator
B. Each bit sets the attenuators to a corresponding
attenuation level. For example, logic-low 0 for bit 5 and
bit 0 of attenuator A and B, respectively, sets both
attenuators at 1dB. 00000 configures both attenuators
for 31dB attenuation and 11111 sets for 0dB attenua-
tion. See Table 1 for programming details.
from the EP. In addition, provide the EP with a low-
inductance path to electrical ground. The EP MUST be
soldered to a ground plane on the PC board, either
directly or through an array of plated via holes.
Table 2. Component List Referring to the
Typical Application Circuit
External Bias
Bias currents for the two-stage amplifier and the loop-
back mixer are set and optimized with external resistors.
Resistor R1 (pin 31) sets the bias current for the input
amplifier, R2 (pin 20) sets the bias current for the output
amplifier, and R3 (pin 40) sets the bias for the loopback
mixer. The external biasing resistor values can be
increased for reduced current operation at the expense
of performance. Contact the factory for details.
Board Layout
The pin configuration of the MAX2058 has been opti-
mized to facilitate a very compact physical layout of the
device and its associated discrete components.
The exposed paddle (EP) of the MAX2058’s thin QFN-
EP package provides a low thermal-resistance path to
the die. It is important that the PC board on which the
MAX2058 is mounted be designed to conduct heat
COMPONENT
C1, C4, C10, C13,
C16
C2, C5, C8, C17
C3, C6, C14, C19
C7, C18
C9, C12, C15
C11
R1
R2
R3
R4
T1
U1
VALUE
0.1μF
100pF
47pF
0.01μF
1000pF
3.9pF
1.2k Ω
3.92k Ω
2.0k Ω
110 Ω
2:1
—
DESCRIPTION
Microwave capacitors (0603)
Microwave capacitors (0402)
Microwave capacitors (0402)
Microwave capacitors (0402)
Microwave capacitors (0402)
Microwave capacitor (0402)
±1% resistor (0402)
±1% resistor (0402)
±1% resistor (0402)
±1% resistor (0402)
RF transformer (100:50)
Mini-Circuits TC2-1T
MAX2058 MAXIM IC
MAX2021/MAX2022/MAX2023*
MAX5873
MAX4395
ZERO-IF
DUAL DAC
QUAD AMP
MODS/DEMODS
MAX2058/MAX2059*
RF DIGITAL VGAs
I
12
90 °
0 °
∑
31dB
17.5dB
31dB
RF OUT
Q
12
SPI
LOGIC
LOOPBACK Rx
SPI
OUT
OFF CONTROL
*FUTURE PRODUCTS—CONTACT FACTORY FOR SAMPLES
Figure 2. Direct Conversion Transmitter for GSM/EDGE Basestations
MAX9491*
VCO + PLL
45, 80,
OR
95MHz
LO
(FEEDS BACK
INTO Rx CHAIN
FRONT-END)
______________________________________________________________________________________
13
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相关代理商/技术参数
MAX2058EVKIT+ 功能描述:射频放大器 700MHz to 1200MHz High-Linearity SPI-Controlled DVGA with Integrated Loopback Mixer RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel
MAX2059 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1700MHz to 2200MHz High-Linearity, SPI-Controlled DVGA with Integrated Loopback Mixer
MAX2059ETL 功能描述:射频放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel
MAX2059ETL+ 功能描述:射频放大器 0.7GHz - 1.2GHz SPI-Controlled DVGA RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel
MAX2059ETL+T 功能描述:射频放大器 0.7GHz - 1.2GHz SPI-Controlled DVGA RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel
MAX2059ETL-T 功能描述:射频放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel
MAX2059EVKIT 功能描述:射频放大器 1700 to 2200MHz High-Linearity SPI-Controlled DVGA w. Integrated Loopback Mixer RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel
MAX2059EVKIT+ 功能描述:射频放大器 1700MHz to 2200MHz High-Linearity SPI-Controlled DVGA with Integrated Loopback Mixer RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel