5秒后页面跳转
捷配首页

Datasheet > LT1228
LT1228 PDF预览

LT1228

更新时间： 2024-01-22 05:25:04
品牌 Logo 应用领域
凌特 - Linear 放大器
页数 文件大小 规格书
20页 434K
描述
100MHz Current Feedback Amplifier with DC Gain Control

阅读下载

中文翻译

获取价格

LT1228 数据手册

 浏览型号LT1228的Datasheet PDF文件第2页浏览型号LT1228的Datasheet PDF文件第3页浏览型号LT1228的Datasheet PDF文件第4页浏览型号LT1228的Datasheet PDF文件第5页浏览型号LT1228的Datasheet PDF文件第6页浏览型号LT1228的Datasheet PDF文件第7页 
LT1228  
100MHz Current Feedback  
Amplifier with DC Gain Control  
U
DESCRIPTIO  
EATURE  
S
F
■
Very Fast Transconductance Amplifier  
Bandwidth: 75MHz  
The LT1228 makes it easy to electronically control the gain  
of signals from DC to video frequencies. The LT1228  
implements gain control with a transconductance amplifier  
(voltage to current) whose gain is proportional to an exter-  
nally controlled current. A resistor is typically used to  
convert the output current to a voltage, which is then  
amplified with a current feedback amplifier. The LT1228  
combines both amplifiers into an 8-pin package, and oper-  
ates on any supply voltage from 4V (±2V) to 30V (±15V). A  
complete differential input, gain controlled amplifier can be  
implemented with the LT1228 and just a few resistors.  
gm = 10 × ISET  
Low THD: 0.2% at 30mVRMS Input  
Wide ISET Range: 1µA to 1mA  
Very Fast Current Feedback Amplifier  
Bandwidth: 100MHz  
■
Slew Rate: 1000V/µs  
Output Drive Current: 30mA  
Differential Gain: 0.04%  
Differential Phase: 0.1°  
High Input Impedance: 25MΩ, 6pF  
Wide Supply Range: ±2V to ±15V  
Inputs Common Mode to Within 1.5V of Supplies  
Outputs Swing Within 0.8V of Supplies  
Supply Current: 7mA  
The LT1228 transconductance amplifier has a high imped-  
ancedifferentialinputandacurrentsourceoutputwithwide  
output voltage compliance. The transconductance, gm, is  
setbythecurrentthatflowsintopin5, ISET. Thesmallsignal  
gm isequaltotentimesthevalueofISETandthisrelationship  
holdsoverseveraldecadesofsetcurrent. Thevoltageatpin  
5 is two diode drops above the negative supply, pin 4.  
■
■
■
■
O U  
PPLICATI  
S
A
■
■
■
■
■
■
Video DC Restore (Clamp) Circuits  
Video Differential Input Amplifiers  
Video Keyer/Fader Amplifiers  
AGC Amplifiers  
The LT1228 current feedback amplifier has very high input  
impedance and therefore it is an excellent buffer for the  
output of the transconductance amplifier. The current feed-  
back amplifier maintains its wide bandwidth over a wide  
range of voltage gains making it easy to interface the  
transconductance amplifier output to other circuitry. The  
current feedback amplifier is designed to drive low imped-  
ance loads, such as cables, with excellent linearity at high  
frequencies.  
Tunable Filters  
Oscillators  
U
O
TYPICAL APPLICATI  
Frequency Response  
6
Differential Input Variable Gain Amp  
V
= ±15V  
= 100Ω  
S
L
R
3
0
15V  
4.7µF  
+
I
= 1mA  
SET  
R3A  
10k  
–3  
7
4
3
2
+
–
+
–6  
1
8
g
R2A  
10k  
V
m
+
–
IN  
–9  
6
I
I
= 300µA  
SET  
–
5
CFA  
V
OUT  
–12  
–15  
–18  
I
SET  
R
–15V  
R2  
F
470Ω  
R4  
R5  
10k  
R3  
100Ω  
= 100µA  
4.7µF  
1.24k  
SET  
+
100Ω  
R1  
270Ω  
R
G
–21  
–24  
HIGH INPUT RESISTANCE  
EVEN WHEN POWER IS OFF  
–18dB < GAIN < 2dB  
10Ω  
R6  
100k  
1M  
10M  
100M  
6.19Ω  
V
≤ 3V  
IN  
RMS  
LT1228 • TA01  
FREQUENCY (Hz)  
LT1228 • TA02  
1
1234567...20

中文翻译

下载PDF

与LT1228相关器件

型号 品牌 获取价格 描述 数据表
LT1228_07 Linear

获取价格

 		100MHz Current Feedback Amplifier with DC Gain Control
LT1228_12 Linear

获取价格

 		100MHz Current Feedback
LT1228C Linear

获取价格

 		100MHz Current Feedback Amplifier with DC Gain Control
LT1228CJ8 Linear

获取价格

 		100MHz Current Feedback Amplifier with DC Gain Control
LT1228CJ8#PBF Linear

获取价格

 		IC 1 CHANNEL, VIDEO AMPLIFIER, CDIP8, 0.300 INCH, HERMETIC SEALED, LEAD FREE, CERAMIC, DIP
LT1228CN8 Linear

获取价格

 		100MHz Current Feedback Amplifier with DC Gain Control
LT1228CN8#PBF Linear

获取价格

 		LT1228 - 100MHz Current Feedback Amplifier with DC Gain Control; Package: PDIP; Pins: 8; T
LT1228CN8#TR Linear

获取价格

 		IC 1 CHANNEL, VIDEO AMPLIFIER, PDIP8, 0.300 INCH, PLASTIC, DIP-8, Audio/Video Amplifier
LT1228CS8 Linear

获取价格

 		100MHz Current Feedback Amplifier with DC Gain Control
LT1228CS8#TR Linear

获取价格

 		暂无描述

与LT1228相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证