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参数资料
| 型号： | MAX19999ETX+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 15/19页 |
| 文件大小： | 0K |
| 描述： | IC DOWNCONVERTER 2CH 36TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| RF 型： | LTE，WiMAX，WLL |
| 频率： | 3GHz ~ 4GHz |
| 混频器数目： | 1 |
| 增益： | 8.3dB |
| 噪音数据： | 10.5dB |
| 次要属性： | 降频变频器 |
| 电流 - 电源： | 279mA，420mA |
| 电源电压： | 3 V ~ 3.6 V，4.75 V ~ 5.25 V |
| 包装： | 托盘 |
| 封装/外壳： | 36-WFQFN 裸露焊盘 |
| 供应商设备封装： | 36-TQFN 裸露焊盘（6x6） |
Dual, SiGe High-Linearity, 3000MHz to
4000MHz Downconversion Mixer with LO Buffer
Pin Description
PIN
1
2, 5, 6, 8, 12, 15,
18, 23, 28, 31, 34
3, 7, 20, 22, 24,
25, 26, 27
4, 10, 16, 21,
30, 36
9
11
13, 14
17
19
29
32, 33
35
—
NAME
RFMAIN
GND
GND
V CC
RFDIV
IFD_SET
IFD+, IFD-
LO_ADJ_D
LO
LO_ADJ_M
IFM-, IFM+
IFM_SET
EP
FUNCTION
Main Channel RF Input. Internally matched to 50 ? . Requires an input DC-blocking capacitor.
Ground. Not internally connected. Ground these pins or leave unconnected.
Ground. Internally connected to the exposed pad (EP). Connect all ground pins and the exposed
pad together.
Power Supply. Connect bypass capacitors as close as possible to the pin (see the Typical
Application Circuit ).
Diversity Channel RF Input. This input is internally matched to 50 ? . Requires a DC-blocking
capacitor.
IF Diversity Amplifier Bias Control. Connect a resistor from this pin to ground to set the bias
current for the diversity IF amplifier.
Diversity Mixer Differential IF Output. Connect pullup inductors from each of these pins to V CC
(see the Typical Application Circuit ).
LO Diversity Amplifier Bias Control. Connect a resistor from this pin to ground to set the bias
current for the diversity LO amplifier.
Local Oscillator Input. This input is internally matched to 50 ? . Requires an input DC-blocking
capacitor.
LO Main Amplifier Bias Control. Connect a resistor from this pin to ground to set the bias current
for the main LO amplifier.
Main Mixer Differential IF Output. Connect pullup inductors from each of these pins to V CC
(see the Typical Application Circuit ).
IF Main Amplifier Bias Control. Connect a resistor from this pin to ground to set the bias current for
the main IF amplifier.
Exposed Pad. Internally connected to GND. Solder this exposed pad to a PCB pad that uses
multiple ground vias to provide heat transfer out of the device into the PCB ground planes. These
multiple via grounds are also required to achieve the noted RF performance
Detailed Description
The MAX19999 provides high linearity and low noise fig-
ure for a multitude of 3000MHz to 4000MHz WiMAX and
LTE base-station applications. This device operates over
an LO range of 2650MHz to 3700MHz and an IF range of
50MHz to 500MHz. Integrated baluns and matching cir-
cuitry allow 50 Ω single-ended interfaces to the RF and
LO ports. The integrated LO buffer provides a high drive
level to the mixer core, reducing the LO drive required at
the MAX19999’s input to a range of -3dBm to +3dBm.
The IF port incorporates a differential output, which is
ideal for providing enhanced 2RF-2LO performance.
RF Input and Balun
The MAX19999’s two RF inputs (RFMAIN and RFDIV)
provide a 50 Ω match when combined with a series DC-
blocking capacitor. This DC-blocking capacitor is
required because the input is internally DC shorted to
ground through each channel’s on-chip balun. When
using a 1.5pF DC-blocking capacitor, the RF port input
return loss is typically 15dB over the RF frequency
range of 3200MHz to 3900MHz.
LO Input, Buffer, and Balun
A two-stage internal LO buffer allows a wide input
power range for the LO drive. All guaranteed specifica-
tions are for an LO signal power from -3dBm to +3dBm.
The on-chip low-loss balun, along with an LO buffer,
drives the double-balanced mixer. All interfacing and
matching components from the LO input to the IF out-
puts are integrated on chip.
High-Linearity Mixer
The core of the MAX19999 is a pair of double-bal-
anced, high-performance passive mixers. Exceptional
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX19999ETX+ | 功能描述:上下转换器 High-Gain 3GHz to 4GHz Downconv RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128 |
| MAX19999ETX+T | 功能描述:上下转换器 High-Gain 3GHz to 4GHz Downconv RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128 |
| MAX1999EEI | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1999EEI+ | 功能描述:DC/DC 开关控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1999EEI+T | 功能描述:DC/DC 开关控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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