Datasheet > 射频和微波 > 射频/微波调制器/解调器> LT5528

LT5528

更新时间： 2024-11-10 22:46:51

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
16页	222K
描述
400MHz to 3.7GHz High Signal Level Downconverting Mixer

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中文翻译

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LT5528 数据手册

LT5527

400MHz to 3.7GHz

High Signal Level

Downconverting Mixer

FEATURES

DESCRIPTIO

The LT^®5527 active mixer is optimized for high linearity,

wide dynamic range downconverter applications. The IC

includes a high speed differential LO buffer amplifier

driving a double-balanced mixer. Broadband, integrated

transformers on the RF and LO inputs provide single-

ended 50Ω interfaces. The differential IF output allows

convenient interfacing to differential IF filters and amplifi-

ers, or is easily matched to drive 50Ω single-ended, with

or without an external transformer.

■

Ω

Single-Ended RF and LO Ports

■

Wide RF Frequency Range: 400MHz to 3.7GHz*

High Input IP3: 24.5dBm at 900MHz

23.5dBm at 1900MHz

■

Conversion Gain: 3.2dB at 900MHz

2.3dB at 1900MHz

Integrated LO Buffer: Low LO Drive Level

High LO-RF and LO-IF Isolation

Low Noise Figure: 11.6dB at 900MHz

12.5dB at 1900MHz

Very Few External Components

Enable Function

4.5V to 5.25V Supply Voltage Range

■

The RF input is internally matched to 50Ω from 1.7GHz to

3GHz, and the LO input is internally matched to 50Ω from

1.2GHz to 5GHz. The frequency range of both ports is

easily extended with simple external matching. The IF

output is partially matched and usable for IF frequencies

up to 600MHz.

■

^{16-Lead (4mm ×}U^{4mm) QFN Package}

APPLICATIO S

The LT5527’s high level of integration minimizes the total

solution cost, board space and system-level variation.

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

*Operation over a wider frequency range is possible with reduced performance. Consult factory for

information and assistance.

■

Cellular, WCDMA, TD-SCDMA and UMTS

Infrastructure

■

GSM900/GSM1800/GSM1900 Infrastructure

■

900MHz/2.4GHz/3.5GHz WLAN

■

MMDS, WiMAX

■

High Linearity Downmixer Applications

TYPICAL APPLICATIO

High Signal Level Downmixer for Multi-Carrier Wireless Infrastructure

1.9GHz Conversion Gain, IIP3, SSB NF and

LO-RF Leakage vs LO Power

LO INPUT

–3dBm (TYP)

–20

–25

–30

–35

–40

–45

–50

–55

–60

–65

–70

–75

IIP3

LT5527

IF = 240MHz

LOW SIDE LO

= 25°C

4.7pF

= 5V

–

100nH

SSB NF

1nF

220nH

100nH

OUTPUT

240MHz

LO-RF

4.7pF

INPUT

BIAS

–9

–7

–5

–3

–1

CC1

GND

CC2

LO POWER (dBm)

5527 TA01b

1nF

1µF

5527 TA01a

5527f

12 3 4 5 6 7...16

中文翻译

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