MAX2386

更新时间： 2024-11-18 23:45:59

品牌	Logo	应用领域
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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数据手册

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MAX2386 数据手册

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

BUMP-PACKAGE

MAX2385EBP-T

MAX2386EBP-T

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

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.

12 3 4 5 6 7...18

中文翻译

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与MAX2386相关器件

型号	品牌	获取价格	描述	数据表
MAX2386EBP-T	MAXIM	获取价格	CDMA + GPS LNA/Mixers
MAX2386EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX2385/MAX2386
MAX2387	MAXIM	获取价格	W-CDMA LNA/Mixer ICs
MAX2387EGC	ROCHESTER	获取价格	TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC12, 3 X 3 MM, 0.90 MM HEIGHT, QFN-12
MAX2387EGC	MAXIM	获取价格	RF and Baseband Circuit, 3 X 3 MM, 0.90 MM HEIGHT, QFN-12
MAX2387EGC+T	MAXIM	获取价格	RF and Baseband Circuit, 3 X 3 MM, ULTRA SMALL, QFN-12
MAX2387EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX2387/MAX2388/MAX2389
MAX2388	MAXIM	获取价格	W-CDMA LNA/Mixer ICs
MAX2388EGC	ROCHESTER	获取价格	TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC12, 3 X 3 MM, 0.90 MM HEIGHT, QFN-12
MAX2388EGC	MAXIM	获取价格	RF and Baseband Circuit, 3 X 3 MM, 0.90 MM HEIGHT, QFN-12

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