Datasheet > LM2907NEP

LM2907NEP

更新时间： 2024-11-23 15:37:23

品牌	Logo	应用领域
美国国家半导体 - NSC		光电二极管转换器
页数	文件大小	规格书
21页	715K
描述
IC VOLTAGE-FREQUENCY CONVERTER, PDIP14, PLASTIC, DIP-14, Analog Special Function Converter

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技术参数
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LM2907NEP 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP,	针数：	14
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.39
转换器类型：	VOLTAGE TO FREQUENCY CONVERTER	JESD-30 代码：	R-PDIP-T14
长度：	19.18 mm	最大线性误差 (EL)：	1%
功能数量：	1	端子数量：	14
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

LM2907NEP 数据手册

June 2004

LM2907EP/LM2917EP

Enhanced Plastic Frequency to Voltage Converter

General Description

Features

n Ground referenced tachometer input interfaces directly

with variable reluctance magnetic pickups

n Op amp/comparator has floating transistor output

n 50 mA sink or source to operate relays, solenoids,

meters, or LEDs

The LM2907EP, LP2917EP series are monolithic 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 fre-

quency doubling for low ripple, full input protection in two

versions (LM2907-8EP, LM2917-8EP) and its output swings

to ground for a zero frequency input.

n Frequency doubling for low ripple

n Tachometer has built-in hysteresis with either differential

input or ground referenced input

The op amp/comparator is fully compatible with the tachom-

eter 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 V_CCup to a maximum V_CE

of 28V.

n Built-in zener on LM2917EP

0.3% linearity typical

n Ground referenced tachometer is fully protected from

damage due to swings above V_CCand below ground

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.

Advantages

n Output swings to ground for zero frequency input

n Easy to use; V_OUT= f_INx V_CCx R1 x C1

n Only one RC network provides frequency doubling

n Zener regulator on chip allows accurate and stable

frequency to voltage or current conversion (LM2917EP)

The more versatile configurations provide differential ta-

chometer 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 tachom-

eter output.

Applications

n Selected Military Applications

n Selected Avionics Applications

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.

ENHANCED PLASTIC

•

Extended Temperature Performance of −40˚C to +85˚C

Baseline Control - Single Fab & Assembly Site

Process Change Notification (PCN)

Qualification & Reliability Data

Solder (PbSn) Lead Finish is standard

Enhanced Diminishing Manufacturing Sources (DMS)

Support

Ordering Information

PART NUMBER

LM2907MX-8EP

LM2917MXEP

(Notes 1, 2)

VIN PART NUMBER

V62/04635-01

V62/04635-02

TBD

NS PACKAGE NUMBER (Note 3)

M08A

M14A

TBD

Note 1: For the following (Enhanced Plastic) versions, check for availablility: LM2907M-8EP, LM2907MEP, LM2907MXEP, LM2907N-8EP, LM2907NEP

and LM2917M-8EP, LM2917MX-8EP, LM2917MEP, LM2917N-8EP, LM2917NEP. Parts listed with an "X" are provided in Tape & Reel and parts without

an "X" are in Rails.

Note 2: FOR ADDITIONAL ORDERING AND PRODUCT INFORMATION, PLEASE VISIT THE ENHANCED PLASTIC WEB SITE AT: www.national.com/

mil

Note 3: Refer to package details under Physical Dimensions

DS200906

www.national.com

12 3 4 5 6 7...21

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