LM2907M-8X

更新时间： 2024-11-26 13:09:23

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器模拟特殊功能转换器光电二极管
页数	文件大小	规格书
21页	708K
描述
IC VOLTAGE-FREQUENCY CONVERTER, PDSO8, 0.150 INCH, PLASTIC, SO-8, Analog Special Function Converter

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LM2907M-8X 技术参数

生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	SOP,	针数：	8
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.16
转换器类型：	VOLTAGE TO FREQUENCY CONVERTER	JESD-30 代码：	R-PDSO-G8
长度：	4.9 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：	SOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
最大正输入电压：	10.5 V	认证状态：	Not Qualified
座面最大高度：	1.75 mm	标称供电电压：	12 V
表面贴装：	YES	技术：	BIPOLAR
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
宽度：	3.9 mm	Base Number Matches：	1

LM2907M-8X 数据手册

May 2003

LM2907/LM2917

Frequency to Voltage Converter

n Only one RC network provides frequency doubling

n Zener regulator on chip allows accurate and stable

frequency to voltage or current conversion (LM2917)

General Description

The LM2907, LM2917 series are monolithic frequency to

voltage converters with a high gain op amp/comparator de-

signed to operate a relay, lamp, or other load when the input

frequency reaches or exceeds a selected rate. The tachom-

eter 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.

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 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 Frequency doubling for low ripple

n Tachometer has built-in hysteresis with either differential

input or ground referenced input

n Built-in zener on LM2917

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.

0.3% linearity typical

n Ground referenced tachometer is fully protected from

damage due to swings above V_CCand below ground

Applications

n Over/under speed sensing

n Frequency to voltage conversion (tachometer)

n Speedometers

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.

n Breaker point dwell meters

n Hand-held tachometer

n Speed governors

n Cruise control

n Automotive door lock control

n Clutch control

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.

n Horn control

n Touch or sound switches

Advantages

n Output swings to ground for zero frequency input

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

Block and Connection Diagrams

Dual-In-Line and Small Outline Packages, Top Views

00794201

Order Number LM2907M-8 or LM2907N-8

See NS Package Number M08A or N08E

00794202

Order Number LM2917M-8 or LM2917N-8

See NS Package Number M08A or N08E

DS007942

www.national.com

12 3 4 5 6 7...21

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与LM2907M-8X相关器件

型号	品牌	获取价格	描述	数据表
LM2907MEP	NSC	获取价格	IC VOLTAGE-FREQUENCY CONVERTER, PDSO14, PLASTIC, SOP-14, Analog Special Function Converter
LM2907MX	TI	获取价格	LM2907/LM2917 Frequency to Voltage Converter
LM2907MX/NOPB	TI	获取价格	对地负载或电源负载高达 50mA 的频压转换器 \| D \| 14 \| -40 to 85
LM2907MX-8	TI	获取价格	LM2907/LM2917 Frequency to Voltage Converter
LM2907MX-8/NOPB	NSC	获取价格	IC VOLTAGE-FREQUENCY CONVERTER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8, Analog Special Functio
LM2907MX-8/NOPB	TI	获取价格	Frequency to Voltage Converter
LM2907MX-8EP	NSC	获取价格	Enhanced Plastic Frequency to Voltage Converter
LM2907MX-8EP	TI	获取价格	LM2907EP / LM2917EP Enhanced Plastic Frequency to Voltage Converter
LM2907MX-8EP/NOPB	TI	获取价格	IC,FREQUENCY-TO-VOLTAGE CONVERTER,SOP,8PIN
LM2907MXEP	NSC	获取价格	VOLTAGE-FREQUENCY CONVERTER, PDSO14, PLASTIC, SOP-14

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