Datasheet > LT5514

LT5514

更新时间： 2023-12-20 18:46:21

品牌	Logo	应用领域
亚德诺 - ADI		放大器驱动驱动器
页数	文件大小	规格书
20页	280K
描述
具有数字控制式增益的超低失真 IF 放大器/ADC 驱动器

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中文翻译

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数据手册

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LT5514 数据手册

LT5514

Ultralow Distortion IF

Amplifier/ADC Driver with

Digitally Controlled Gain

FEATURES

DESCRIPTIO

TheLT^®5514isaprogrammablegainamplifier(PGA)with

bandwidth extending from low frequency (LF) to 850MHz.

It consists of a digitally controlled variable attenuator,

followed by a high linearity amplifier. The amplifier is

configured with two identical transconductance amplifi-

ers, hard wired in parallel with individual dedicated enable

pins. When both amplifiers are enabled (Standard mode),

the LT5514 offers an OIP3 of +47dBm (at 100MHz).

Power dissipation can be reduced when a single amplifier

is enabled (Low Power mode). Four parallel digital inputs

control the gain over a 22.5dB range with 1.5dB step

resolution. An on-chip power supply regulator/filter helps

isolatetheamplifiersignalpathfromexternalnoisesources.

■

Output IP3 at 100MHz: 47dBm

■

Maximum Output Power: 21dBm

■

Bandwidth: LF to 850MHz

■

Propagation Delay: 0.8ns

■

Maximum Gain: 33dB

■

Noise Figure: 7.3dB (Max Gain)

■

Gain Control Range: 22.5dB

■

Gain Control Step: 1.5dB

■

Gain Control Settling Time: 500ns

■

Output Noise Floor: –134dBm/Hz (Max Gain)

■

Reverse Isolation: –80dB

Single Supply: 4.75V to 5.25V

■

Low Power Mode

Shutdown Mode

■

The LT5514’s open-loop architecture offers stable opera-

tion for any practical load conditions, including peaking-

free AC response when driving capacitive loads, and

excellent reverse isolation.

■

Enable/Disable Time: 1µs

■

Differential I/O Interface

■

20-Lead TSSOP Package

APPLICATIO S

The LT5514 may be operated broadband, where the out-

put differential RC time constant sets the bandwidth, or it

may be used as a narrowband driver with the appropriate

output filter.

■

High Linearity ADC Driver

■

IF Sampling Receivers

■

VGA IF Power Amplifier

50Ω Driver

Instrumentation Applications

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

■

TYPICAL APPLICATIO

Output IP3 vs Frequency

(Standard Mode)

CHOKE

0.1µF

OUT

= 200Ω

AMP

INPUT

BPF

100Ω

LT5514

ADC

R = 100Ω

OUT

5514 TA01

0.1µF

GAIN CONTROL

4 LINES

100

FREQUENCY (MHz)

200

150

5514 TA02

5514f

12 3 4 5 6 7...20

中文翻译

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与LT5514相关器件

型号	品牌	获取价格	描述	数据表
LT5514EFE	Linear	获取价格	Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain
LT5514EFE#PBF	Linear	获取价格	LT5514 - Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain; Packa
LT5514EFE#TR	Linear	获取价格	LT5514 - Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain; Packa
LT5514EFE#TRPBF	Linear	获取价格	LT5514 - Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain; Packa
LT5515	Linear	获取价格	40MHz to 900MHz Quadrature Demodulator
LT5515	ADI	获取价格	1.5GHz 至 2.5GHz 直接转换正交解调器
LT5515EUF	Linear	获取价格	1.5GHz to 2.5GHz Direct Conversion Quadrature Demodulator
LT5516	Linear	获取价格	800MHz to 1.5GHz Direct Conversion Quadrature Demodulator
LT5516	ADI	获取价格	800MHz 至 1.5GHz 直接转换正交解调器
LT5516EUF	Linear	获取价格	800MHz to 1.5GHz Direct Conversion Quadrature Demodulator

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