EEWORLDEEWORLDEEWORLD

Part Number

Search

LT5514_15

Description
Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain
File Size274KB,20 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet View All

LT5514_15 Overview

Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain

LT5514
Ultralow Distortion IF
Amplifier/ADC Driver with
Digitally Controlled Gain
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
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
Enable/Disable Time: 1µs
Differential I/O Interface
20-Lead TSSOP Package
The LT
®
5514 is a programmable gain amplifier (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
isolate the amplifier signal path from external noise sources.
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.
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
High Linearity ADC Driver
IF Sampling Receivers
VGA IF Power Amplifier
50Ω Driver
Instrumentation Applications
TYPICAL APPLICATIO
56
5V
53
CHOKE
0.1µF
RF
INPUT
LO
IF
BPF
IF
AMP
0.1µF
4 LINES
CHOKE
0.1µF
OIP3 (dBm)
50
R
OUT
= 200Ω
47
R
OUT
= 100Ω
44
41
38
35
0
50
100
FREQUENCY (MHz)
150
200
5514 TA02
LT5514
100Ω
0.1µF
GAIN CONTROL
ADC
5514 TA01
U
Output IP3 vs Frequency
(Standard Mode)
5514f
U
U
1
Please tell me how to upgrade the serial port online
Can anyone with relevant experience or knowledge tell me about the method of serial port online upgrade? What are the general ideas? Mainly how to fix some files that do not need to be upgraded, how t...
glkos Embedded System
BLE_CC2540_Beginner's Guide_03
7. Try a different hardware 1. Use the purchased CC2540 module to experiment. Modify the debug interface. Use the program that comes with the CCDebug CD from TI to test it. The CD example program is m...
lyzhangxiang RF/Wirelessly
Program compilation error, please help me
volatile unsigned int *xy=(volatile unsigned int *)0x3401;compile, this sentence gives an error:erro: "declaration may not appear after executable statement in block"What is wrong?#define conval 0x15....
Nechi Analogue and Mixed Signal
What are the Wireless Power Consortium standards and TI compatible solutions?
Wireless charging technology shows great potential in the consumer market. Charging electronic devices without the use of wires not only provides a convenient solution for portable device users, but a...
qwqwqw2088 Wireless Connectivity
[My relationship with TI] + Talk about my relationship with TI
[i=s]This post was last edited by loleno on 2015-1-23 16:53[/i] [align=left][color=#000000][font=宋体][size=2]Speaking of the famous Texas Instruments (TI), anyone who studies electronics will know it. ...
loleno TI Technology Forum
I am a novice in designing switching power supplies. Please give me some advice.
Hello everyone. I have to design a flyback power supply recently. I have been studying theory before. Now I am really confused. The power supply I want to make is 24V and 4A, which means the power is ...
jonny0811 Analogue and Mixed Signal

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 317  1927  1325  1776  17  7  39  27  36  1 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号