Datasheet > MAX2670GTVT

MAX2670GTVT

更新时间： 2024-11-05 11:17:55

品牌	Logo	应用领域
美信 - MAXIM		放大器全球定位系统
页数	文件大小	规格书
9页	2027K
描述
GPS/GNSS Front-End Amplifier ESD Protected to ±2kV Human Body Model

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MAX2670GTVT 数据手册

19-5655; Rev 0; 6/11

E V A L U A T I O N K I T A V A I L A B L E

MAX2670

GPS/GNSS Front-End Amplifier

General Description

Features

The MAX2670 GPS/GNSS front-end amplifier IC is

designed for automotive and marine GPS/GNSS satellite

navigation antenna modules or for any application that

needs to compensate for cable losses from the antenna

to receiver. Two unconditionally stable low-noise amplifier

stages provide the high gain and integrated I/O matching

to minimize the need for external matching components

and eliminate the need for additional gain stages. The

device features the option to place a bandpass ceramic

or SAW filter between the two amplifier stages to provide

a narrow-band output to further improve the noise perfor-

mance of the GPS/GNSS receiver. Additionally, a 3.4dB

gain step is provided to compensate for cable loss varia-

tion between different applications.

S First Amplifier Noise Figure*: 1.0dB

S High Gain**: 34.8dB

S 3.4dB Gain Step

S Shared V

and RFOUT2 Pin

S Integrated 50I Output Matching

S 3.0V to 5.5V Supply Voltage Range

S Small, Low-Cost Package (3mm x 3mm)

S AEC-Q100 Qualified

S ESD Protected to 2kV Human Body Model

Applications

The device is designed to operate across all GNSS fre-

quency standards with a 34.8dB typical cascaded gain

and a 25mA supply current. The two LNA stages allow

the use of a wide range of GNSS filter types for maxi-

mum flexibility in system design. The final RF output pin,

which drives the cable to the GNSS receiver, is also the

power-supply connection that accepts a DC supply in

the 3.0V to 5.5V range. Alternatively, the DC supply can

be applied to pin 4.

Integrated Automotive and Marine GPS Receivers

Active Antennas

*Without external input impedance match.

**First amplifier input is impedance matched (S = -10dB).

Second amplifier set to high gain. Amplifiers cascaded without

interstage filter.

Ordering Information appears at end of data sheet.

Typical Operating Circuit appears at end of data sheet.

This GPS/GNSS front-end amplifier is designed on a low-

noise, advanced SiGe process and is available in a lead-

free, 10-pin TDFN surface-mount package (3mm x 3mm).

Functional Diagram

TOP VIEW

RFIN2

GND

10 RFOUT1

MAX2670

GND

AMP 2

GND

AMP 1

EXTCAP/ALT_VCC

RFOUT2/VCC

GAIN_SELECT

RFIN1

GENERATION

TDFN

For related parts and recommended products to use with this part, refer to www.maxim-ic.com/MAX2670.related.

�� Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...9

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