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MAX2385

更新时间： 2024-02-12 16:23:05
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美信 - MAXIM 全球定位系统
页数 文件大小 规格书
18页 253K
描述
CDMA + GPS LNA/Mixers

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MAX2385 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：BGA包装说明：2.10 X 2.70 MM, UCSP-20
针数：20Reach Compliance Code：not_compliant
HTS代码：8542.39.00.01风险等级：5.92
JESD-30 代码：R-PBGA-B20JESD-609代码：e0
长度：2.64 mm湿度敏感等级：1
功能数量：1端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：VFBGA
封装形状：RECTANGULAR封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度（摄氏度）：240认证状态：Not Qualified
座面最大高度：0.67 mm标称供电电压：2.75 V
表面贴装：YES电信集成电路类型：RF AND BASEBAND CIRCUIT
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn63Pb37)
端子形式：BALL端子节距：0.5 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：20
宽度：2.02 mm

MAX2385 数据手册

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19-2205; Rev 0; 10/01  
CDMA + GPS LNA/Mixers  
General Description  
Features  
The MAX2385/MAX2386 LNA/mixer ICs are designed  
for CDMA/cdma2000 1x and GPS applications. The  
MAX2385/MAX2386 are optimized for the Japanese  
832MHz to 870MHz band, and can also be configured  
for the Korean/Chinese/U.S. 869MHz to 894MHz band.  
o Low Average Current Consumption: 4.5mA  
(CDMA)  
o +2.7V to +3.6V Operation  
o 2.0dB Cascade GPS Noise Figure  
o 2.5 dB Cascade CDMA Noise Figure  
o Adjustable IIP3  
To optimize linearity and current consumption, the  
CDMA LNA comprises four gain states. The high-gain  
LNA has a reduced supply-current mode for use when  
no transmit (Tx) signal is present, and a high linearity  
mode, which minimizes Tx cross-modulation in the  
presence of a large interfering signal during talk mode.  
Two low-gain modes, provide higher cascade IIP3 at  
lower current. The lowest gain setting provides an LNA  
bypass and an ultra-low chip current of 4mA. This sig-  
nificantly extends the phone’s standby time and lowers  
the overall current consumption of the phone.  
o LO Output Buffer to Drive Tx Upconverter  
o 1µA Shutdown Current  
o Tiny 2.1mm ✕ 2.7mm Chip-Scale Package  
(UCSP™)  
o Single VCO for GPS and CDMA Operation  
o LO Divider Improves Phase Noise/Desensitization  
Gain-switching hysteresis can be adjusted by selection  
of an off-chip resistor, which sets the current and linear-  
ity in each mode to customize switchover points.  
In GPS mode, the MAX2386 LNA offers high gain and  
the MAX2385 features lower current consumption with  
lower gain. The CDMA paths of the MAX2385/MAX2386  
are identical.  
Ordering Information  
PART  
TEMP. RANGE  
-40°C to +85°C  
-40°C to +85°C  
BUMP-PACKAGE  
✕
MAX2385EBP-T  
MAX2386EBP-T  
5
5
4 UCSP*  
4 UCSP*  
The MAX2385/MAX2386 include an on-chip LO divider,  
which enables the use of one VCO module for both cel-  
lular and GPS modes. An on-chip LO buffer to drive the  
Tx upconverter further reduces system complexity.  
✕
*Requires a special solder temperature profile described in the  
Absolute Maximum Ratings section.  
Block Diagram  
Applications  
CDMA/cdma2000 1x Cellular Phones with GPS  
MAX2385  
MAX2386  
GPS PATH  
Pin Configuration/Functional Diagram/Typical Operating  
Circuit appears at end of data sheet.  
CDMA PATH  
÷2  
LO BUFFER  
OUTPUT  
LO BUFFER  
ENABLE  
UCSP is a trademark of Maxim Products, Inc.  
VCO  
________________________________________________________________ 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.  
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