LT5516EUF

更新时间： 2024-02-03 04:09:03

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
13页	213K
描述
800MHz to 1.5GHz Direct Conversion Quadrature Demodulator

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中文翻译

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LT5516EUF 数据手册

LT5516

800MHz to 1.5GHz Direct

Conversion Quadrature Demodulator

DESCRIPTIO

FEATURES

■

Frequency Range: 800MHz to 1.5GHz

High IIP3: 21.5dBm at 900MHz

High IIP2: 52dBm

Noise Figure: 12.8dB at 900MHz

Conversion Gain: 4.3dB at 900MHz

I/Q Gain Mismatch: 0.2dB

Shutdown Mode

The LT^®5516 is an 800MHz to 1.5GHz direct conversion

quadrature demodulator optimized for high linearity re-

ceiver applications. It is suitable for communications

receiverswhereanRForIFsignalisdirectlyconvertedinto

I and Q baseband signals with bandwidth up to 260MHz.

The LT5516 incorporates balanced I and Q mixers, LO

buffer amplifiers and a precision, high frequency quadra-

ture generator.

■

16-Lead QFN 4mm × 4mm Package

with Exposed Pad

In an RF receiver, the high linearity of the LT5516 provides

excellent spur-free dynamic range, even with fixed gain

front end amplification. This direct conversion receiver

can eliminate the need for intermediate frequency (IF)

signal processing, as well as the corresponding require-

ments for image filtering and IF filtering. Channel filtering

can be performed directly at the outputs of the I and Q

channels. These outputs can interface directly to channel-

select filters (LPFs) or to a baseband amplifier.

APPLICATIO S

■

Cellular/PCS/UMTS Infrastructure

■

High Linearity Direct Conversion I/Q Receiver

■

High Linearity I/Q Demodulator

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

TYPICAL APPLICATIO

I/Q Output Power, IM3 vs

RF Input Power

BPF

LT5516

LNA

LPF

OUT

VGA

–20

–

OUT

0°

–

DSP

–40

LO INPUT

ENABLE

IM3

LPF

= 5v

= 25°C

OUT

–60

0°/90°

= –10dBm

= 901MHz

= 899.9MHz

–

OUT

RF1

RF2

–80

90°

–

= 900.1MHz

–100

5516 F01

–18

–14

–10

–6

–2

2 6

RF INPUT POWER (dBm)

5516 TA01

Figure 1. High Signal-Level I/Q Demodulator for Wireless Infrastructure

5516f

12 3 4 5 6 7...13

中文翻译

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