lm2917mx National Semiconductor Corporation, lm2917mx Datasheet - Page 3

• Manufacturer Part Number: lm2917mx
• Description: Frequency To Voltage Converter
• Manufacturer: National Semiconductor Corporation

TACHOMETER
V
V
I
I
K
OP/AMP COMPARATOR
V
I
ZENER REGULATOR
2
3
BIAS
Symbol
OH
OL
OS
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
V
, I
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 +V
Note 3: V
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 I
maximum value for R1 is limited by the output resistance of pin 3 which is greater than 10 MΩ typically.
Supply Voltage
Supply Current (Zener Options)
Collector Voltage
Differential Input Voltage
Input Voltage Range
CC
3
Tachometer
Op Amp/Comparator
Tachometer
Op Amp/Comparator
= 12 V
LM2907-8, LM2917-8
LM2907, LM2917
OH
Input Thresholds
Hysteresis
Offset Voltage
Input Bias Current
Pin 2
Pin 2
Output Current
Leakage Current
Gain Constant
Linearity
Input Common-Mode Voltage
Voltage Gain
Output Sink Current
Output Source Current
Saturation Voltage
Regulator Voltage
Series Resistance
Temperature Stability
TOTAL SUPPLY CURRENT
is equal to
DC
LM2907/LM2917
LM2907-8/LM2917-8
, T
A
= 25˚C, see test circuit
3
Parameter
⁄
4
x V
CC
TH
− 1 V
− (−V
BE
, V
TH
OL
), offset voltage is their difference. See test circuit.
is equal to
V
V
V
V
V
V
V2 = V3 = 6.0V (Note 4)
I2 = 0, V3 = 0
(Note 3)
f
V
V
V
V
I
I
I
R
IN
SINK
SINK
SINK
IN
IN
IN
IN
IN
IN
IN
IN
C
E
DROP
0.0V to +28V
0.0V to +28V
= 1 kHz, 5 kHz, 10 kHz (Note 5)
1
= 1.0
= V
= 250 mVp-p
= 250 mVp-p
= 250 mVp-p
=
= +125 mV
= −125 mV
= 6.0V
= 6.0V
⁄
4
(Note 1)
= 5 mA
= 20 mA
= 50 mA
x V
±
CC
= 470Ω
50 mV
CC
25 mA
±
−2.0
− 1 V
28V
28V
28V
28V
28V
DC
Conditions
BE
DC
DC
therefore V
@
@
@
(Note 3)
(Note 3)
3
1 kHz (Note 2)
1 kHz (Note 2)
1 kHz (Note 2)
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Soldering Information
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
OH
LM2907-8, LM2917-8
LM2907-14, LM2917-14
See (Note 1)
Dual-In-Line Package
Small Outline Package
Soldering (10 seconds)
Vapor Phase (60 seconds)
Infrared (15 seconds)
− V
OL
= V
CC
/2. The difference, V
−1.0
±
Min
140
0.9
40
0
10
7.56
10.5
Typ
±
180
200
3.5
0.1
8.3
2.3
1.0
0.3
0.1
1.0
3.8
OH
30
50
50
10
+1
5
3
25
− V
OL
, and the mirror gain, I
V
CC
−65˚C to +150˚C
Max
+1.0
±
240
500
0.1
1.1
0.5
1.0
1.5
−40˚C to +85˚C
10
15
10
15
−1.5V
1
6
40
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1200 mW
1580 mW
3
x R1. The
260˚C
215˚C
220˚C
mV/˚C
Units
V/mV
mV
mV
mV
mV
mV
mA
mA
mA
µA
µA
µA
nA
%
Ω
V
V
V
V
V
V
V
2
/I
3
,