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LM2907N-8 PDF预览

LM2907N-8

更新时间: 2024-02-04 18:46:16
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德州仪器 - TI 转换器
页数 文件大小 规格书
32页 2154K
描述
LM2907/LM2917 Frequency to Voltage Converter

LM2907N-8 技术参数

生命周期:Obsolete零件包装代码:DIP
包装说明:DIP,针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.39
转换器类型:VOLTAGE TO FREQUENCY CONVERTERJESD-30 代码:R-PDIP-T8
长度:9.817 mm最大线性误差 (EL):1%
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装形状:RECTANGULAR封装形式:IN-LINE
认证状态:Not Qualified座面最大高度:5.08 mm
标称供电电压:12 V表面贴装:NO
技术:BIPOLAR温度等级:INDUSTRIAL
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL宽度:7.62 mm
Base Number Matches:1

LM2907N-8 数据手册

 浏览型号LM2907N-8的Datasheet PDF文件第2页浏览型号LM2907N-8的Datasheet PDF文件第3页浏览型号LM2907N-8的Datasheet PDF文件第4页浏览型号LM2907N-8的Datasheet PDF文件第5页浏览型号LM2907N-8的Datasheet PDF文件第6页浏览型号LM2907N-8的Datasheet PDF文件第7页 
LM2907-N, LM2917-N  
www.ti.com  
SNAS555C JUNE 2000REVISED MARCH 2013  
LM2907/LM2917 Frequency to Voltage Converter  
Check for Samples: LM2907-N, LM2917-N  
1
FEATURES  
DESCRIPTION  
The LM2907, LM2917 series are monolithic  
2
Ground Referenced Tachometer Input  
Interfaces Directly With Variable Reluctance  
Magnetic Pickups  
frequency to voltage converters with a high gain op  
amp/comparator designed to operate a relay, lamp, or  
other load when the input frequency reaches or  
exceeds a selected rate. The tachometer uses a  
charge pump technique and offers frequency  
doubling for low ripple, full input protection in two  
versions (LM2907-8, LM2917-8) and its output swings  
to ground for a zero frequency input.  
Op Amp/Comparator Has Floating Transistor  
Output  
50 mA Sink or Source to Operate Relays,  
Solenoids, Meters, or LEDs  
Frequency Doubling For Low Ripple  
The op amp/comparator is fully compatible with the  
tachometer and has a floating transistor as its output.  
This feature allows either a ground or supply referred  
load of up to 50 mA. The collector may be taken  
above VCC up to a maximum VCE of 28V.  
Tachometer Has Built-In Hysteresis With  
Either Differential Input or Ground Referenced  
Input  
Built-In Zener on LM2917  
±0.3% Linearity Typical  
The two basic configurations offered include an 8-pin  
device with a ground referenced tachometer input  
and an internal connection between the tachometer  
output and the op amp non-inverting input. This  
version is well suited for single speed or frequency  
switching or fully buffered frequency to voltage  
conversion applications.  
Ground Referenced Tachometer is Fully  
Protected From Damage Due to Swings Above  
VCC and Below Ground  
APPLICATIONS  
Over/Under Speed Sensing  
The more versatile configurations provide differential  
tachometer input and uncommitted op amp inputs.  
With this version the tachometer input may be floated  
and the op amp becomes suitable for active filter  
conditioning of the tachometer output.  
Frequency to Voltage Conversion  
(Tachometer)  
Speedometers  
Breaker Point Dwell Meters  
Hand-Held Tachometer  
Speed Governors  
Both of these configurations are available with an  
active shunt regulator connected across the power  
leads. The regulator clamps the supply such that  
stable frequency to voltage and frequency to current  
operations are possible with any supply voltage and a  
suitable resistor.  
Cruise Control  
Automotive Door Lock Control  
Clutch Control  
Horn Control  
Touch or Sound Switches  
ADVANTAGES  
Output Swings to Ground For Zero Frequency  
Input  
Easy to Use; VOUT = fIN × VCC × R1 × C1  
Only One RC Network provides Frequency  
Doubling  
Zener Regulator on Chip allows Accurate and  
Stable Frequency to Voltage or Current  
Conversion (LM2917)  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2000–2013, Texas Instruments Incorporated  

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