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参数资料
| 型号： | LM2917MX-8EP |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟专用变换器 |
| 英文描述： | VOLTAGE-FREQUENCY CONVERTER, PDSO8 |
| 封装： | 0.150 INCH, PLASTIC, SOP-8 |
| 文件页数： | 1/21页 |
| 文件大小： | 715K |
| 代理商： | LM2917MX-8EP |
LM2907EP/LM2917EP
Enhanced Plastic Frequency to Voltage Converter
General Description
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.
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
CC up to a maximum VCE
of 28V.
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.
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.
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 40C to +85C
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
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
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 LM2917EP
n ±
0.3% linearity typical
n
Ground referenced tachometer is fully protected from
damage due to swings above V
CC and below ground
Advantages
n
Output swings to ground for zero frequency input
n
Easy to use; V
OUT =fIN xVCC xR1xC1
n
Only one RC network provides frequency doubling
n
Zener regulator on chip allows accurate and stable
frequency to voltage or current conversion (LM2917EP)
Applications
n
Selected Military Applications
n
Selected Avionics Applications
Ordering Information
PART NUMBER
VIN PART NUMBER
NS PACKAGE NUMBER (Note 3)
LM2907MX-8EP
V62/04635-01
M08A
LM2917MXEP
V62/04635-02
M14A
(Notes 1, 2)
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
June 2004
LM2907EP/LM2917EP
Enhanced
Plastic
Frequency
to
V
oltage
Converter
2004 National Semiconductor Corporation
DS200906
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM2917M-8EP | VOLTAGE-FREQUENCY CONVERTER, PDSO8 |
| LM2907N-8EP | VOLTAGE-FREQUENCY CONVERTER, PDIP8 |
| LM2917N-8EP | VOLTAGE-FREQUENCY CONVERTER, PDIP8 |
| LM2917MEP | VOLTAGE-FREQUENCY CONVERTER, PDSO14 |
| LM2907MXEP | VOLTAGE-FREQUENCY CONVERTER, PDSO14 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2917N | 功能描述:电压频率转换及频率电压转换 RoHS:否 制造商:Texas Instruments 全标度频率:4000 KHz 线性误差:+/- 1 % FSR 电源电压-最大: 电源电压-最小: 最大工作温度:+ 85 C 最小工作温度:- 25 C 安装风格:Through Hole 封装 / 箱体:PDIP-14 封装:Tube |
| LM2917N | 制造商:Texas Instruments 功能描述:TACHO F/V CONVERTER 2917 DIP14 |
| LM2917N/NOPB | 功能描述:电压频率转换及频率电压转换 FREQ TO VLTG CONVERTER RoHS:否 制造商:Texas Instruments 全标度频率:4000 KHz 线性误差:+/- 1 % FSR 电源电压-最大: 电源电压-最小: 最大工作温度:+ 85 C 最小工作温度:- 25 C 安装风格:Through Hole 封装 / 箱体:PDIP-14 封装:Tube |
| LM2917N-8 | 功能描述:电压频率转换及频率电压转换 RoHS:否 制造商:Texas Instruments 全标度频率:4000 KHz 线性误差:+/- 1 % FSR 电源电压-最大: 电源电压-最小: 最大工作温度:+ 85 C 最小工作温度:- 25 C 安装风格:Through Hole 封装 / 箱体:PDIP-14 封装:Tube |
| LM2917N-8 | 制造商:Texas Instruments 功能描述:IC TACHO F/V CONVERTER 2917 DIP8 |
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