LM2907N datasheet(3/21 Pages) NSC

номер детали	LM2907N

подробное описание детали	Frequency to Voltage Converter

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage

28V

Supply Current (Zener Options)

25 mA

Collector Voltage

28V

Differential Input Voltage

Tachometer

28V

Op Amp/Comparator

28V

Input Voltage Range

Tachometer

LM2907-8, LM2917-8

±28V

LM2907, LM2917

0.0V to +28V

Op Amp/Comparator

0.0V to +28V

Power Dissipation

LM2907-8, LM2917-8

1200 mW

LM2907-14, LM2917-14

1580 mW

See (Note 1)

Operating Temperature Range

−40˚C to +85˚C

Storage Temperature Range

−65˚C to +150˚C

Soldering Information

Dual-In-Line Package

Soldering (10 seconds)

260˚C

Small Outline Package

Vapor Phase (60 seconds)

215˚C

Infrared (15 seconds)

220˚C

See AN-450 “Surface Mounting Methods and Their Effect

on Product Reliability” for other methods of soldering

surface mount devices.

Electrical Characteristics

V

CC =12 VDC,TA = 25˚C, see test circuit

Symbol

Parameter

Conditions

Min

Typ

Max

Units

TACHOMETER

Input Thresholds

V

IN = 250 mVp-p @ 1 kHz (Note 2)

±10

±25

±40

mV

Hysteresis

V

IN = 250 mVp-p @ 1 kHz (Note 2)

30

mV

Offset Voltage

V

IN = 250 mVp-p @ 1 kHz (Note 2)

LM2907/LM2917

3.5

10

mV

LM2907-8/LM2917-8

5

15

mV

Input Bias Current

V

IN = ±50 mVDC

0.1

1

µA

V

OH

Pin 2

V

IN = +125 mVDC (Note 3)

8.3

V

OL

Pin 2

V

IN = −125 mVDC (Note 3)

2.3

V

I

2,I3

Output Current

V2 = V3 = 6.0V (Note 4)

140

180

240

µA

I

3

Leakage Current

I2 = 0, V3 = 0

0.1

µA

K

Gain Constant

(Note 3)

0.9

1.0

1.1

Linearity

f

IN = 1 kHz, 5 kHz, 10 kHz (Note 5)

−1.0

0.3

+1.0

%

OP/AMP COMPARATOR

V

OS

V

IN = 6.0V

3

10

mV

I

BIAS

V

IN = 6.0V

50

500

nA

Input Common-Mode Voltage

0

V

CC−1.5V

V

Voltage Gain

200

V/mV

Output Sink Current

V

C = 1.0

40

50

mA

Output Source Current

V

E =VCC −2.0

10

mA

Saturation Voltage

I

SINK = 5 mA

0.1

0.5

V

I

SINK = 20 mA

1.0

V

I

SINK = 50 mA

1.0

1.5

V

ZENER REGULATOR

Regulator Voltage

R

DROP = 470

Ω

7.56

V

Series Resistance

10.5

15

Ω

Temperature Stability

+1

mV/˚C

TOTAL SUPPLY CURRENT

3.8

6

mA

Note 1: For operation in ambient temperatures above 25˚C, the device must be derated based on a 150˚C maximum junction temperature and a thermal resistance

of 101˚C/W junction to ambient for LM2907-8 and LM2917-8, and 79˚C/W junction to ambient for LM2907-14 and LM2917-14.

Note 2: Hysteresis is the sum +VTH − (−VTH), offset voltage is their difference. See test circuit.

Note 3: VOH is equal to 3⁄4 xVCC −1VBE,VOL is equal to 1⁄4 xVCC −1VBE therefore VOH −VOL =VCC/2. The difference, VOH −VOL, and the mirror gain, I2/I3,

are the two factors that cause the tachometer gain constant to vary from 1.0.

Note 4: Be sure when choosing the time constant R1 x C1 that R1 is such that the maximum anticipated output voltage at pin 3 can be reached with I3 x R1. The

maximum value for R1 is limited by the output resistance of pin 3 which is greater than 10 M

Ω typically.

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Аналогичный номер детали - LM2907N

производитель	номер детали	датащи	подробное описание детали
National Semiconductor ...	LM2907N	326Kb / 18P	Frequency to Voltage Converter
Texas Instruments	LM2907N	535Kb / 24P	[Old version datasheet] LM2907/LM2917 Frequency to Voltage Converter
	LM2907N	2Mb / 32P	[Old version datasheet] LM2907/LM2917 Frequency to Voltage Converter
	LM2907N	96Kb / 7P	[Old version datasheet] FREQUENCY-TO-VOLTAGE CONVERTERS
National Semiconductor ...	LM2907N-8	326Kb / 18P	Frequency to Voltage Converter

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Аналогичное описание - LM2907N

производитель	номер детали	датащи	подробное описание детали
Microchip Technology	AN795	280Kb / 15P	Voltage-to-Frequency/Frequency-to-Voltage Converter 2002
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Texas Instruments	VFC32	411Kb / 11P	[Old version datasheet] Voltage-to-Frequency and Frequency-to-Voltage CONVERTER
Analog Devices	AD650	284Kb / 12P	Voltage-to-Frequency and Frequency-to-Voltage Converter REV. C
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