Datasheet > LM2907M-8/NOPB

LM2907M-8/NOPB

更新时间： 2024-11-26 21:18:03

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
22页	490K
描述
IC VOLTAGE-FREQUENCY CONVERTER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8, Analog Special Function Converter

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技术参数
数据手册
替代型号

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LM2907M-8/NOPB 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
包装说明：	SOP, SO8(UNSPEC)	Reach Compliance Code：	compliant
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	JESD-609代码：	e3
长度：	4.9 mm	最大线性误差 (EL)：	1%
湿度敏感等级：	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	封装等效代码：	SO8(UNSPEC)
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	最大正输入电压：	10.5 V
电源：	12 V	认证状态：	Not Qualified
座面最大高度：	1.75 mm	子类别：	Analog Special Function Converters
最大压摆率：	6 mA	标称供电电压：	12 V
表面贴装：	YES	技术：	BIPOLAR
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	3.9 mm	Base Number Matches：	1

LM2907M-8/NOPB 数据手册

December 9, 2008

LM2907/LM2917

Frequency to Voltage Converter

Only one RC network provides frequency doubling

■

General Description

Zener regulator on chip allows accurate and stable

frequency to voltage or current conversion (LM2917)

■

The LM2907, LM2917 series are monolithic frequency to volt-

age converters with a high gain op amp/comparator designed

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

Features

quency 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 fre-

quency input.

Ground referenced tachometer input interfaces directly

■

with variable reluctance magnetic pickups

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 tachome-

ter 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_CEof 28V.

■

Tachometer has built-in hysteresis with either differential

input or ground referenced input

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

Ground referenced tachometer is fully protected from

damage due to swings above V_CCand below ground

Applications

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 tachome-

ter output.

Over/under speed sensing

■

Frequency to voltage conversion (tachometer)

Speedometers

Breaker point dwell meters

Hand-held tachometer

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.

Speed governors

Cruise control

Automotive door lock control

Clutch control

■

Horn control

Advantages

Touch or sound switches

Output swings to ground for zero frequency input

■

Easy to use; V_OUT= f_IN× V_CC× R1 × C1

■

Connection Diagrams

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

Order Number LM2907M-8 or LM2907⁷N⁹⁴-²8⁰¹

See NS Package Number M08A or N08E

Order Number LM2917M-8 or LM2917N-8

See NS Package Number M08A or N08E

794202

7942

www.national.com

12 3 4 5 6 7...22

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LM2907M-8/NOPB 替代型号

型号	品牌	替代类型	描述	数据表
LM2917M-8/NOPB	TI	功能相似	对地负载或电源负载高达 50mA 的频压转换器（带齐纳稳压器） \| D \| 8 \| -40
LM2907M-8	NSC	功能相似	Frequency to Voltage Converter

与LM2907M-8/NOPB相关器件

型号	品牌	获取价格	描述	数据表
LM2907M-8EP	NSC	获取价格	IC VOLTAGE-FREQUENCY CONVERTER, PDSO8, 0.150 INCH, PLASTIC, SOP-8, Analog Special Function
LM2907M-8EP	TI	获取价格	VOLTAGE-FREQUENCY CONVERTER, PDSO8, 0.150 INCH, PLASTIC, SOP-8
LM2907M-8X	NSC	获取价格	IC VOLTAGE-FREQUENCY CONVERTER, PDSO8, 0.150 INCH, PLASTIC, SO-8, Analog Special Function
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

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