NJM4151D# NJR, NJM4151D# Datasheet - Page 8
NJM4151D#
Manufacturer Part Number
NJM4151D#
Description
IC V-F/F-V CONVERTER 8DIP
Manufacturer
NJR
Type
Volt to Freq & Freq to Voltr
Datasheet
1.NJM4151D.pdf
(10 pages)
Specifications of NJM4151D#
Frequency - Max
100kHz
Full Scale
±100ppm/°C
Linearity
±1%
Mounting Type
Through Hole
Package / Case
8-DIP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
NJM#4151D
NJM#4151D
NJM#4151D
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
III. Design a single supply FVC to operate with a supply voltage of 8V and full scale input frequency f
IV. Design an opto-isolated V
- 8 -
1. Set R
2. T = 0.75 (1/83.3) = 9msec Let R
3. Since this FVC must operate from 8.0V, we shall make the full scale output voltage at pin 6 equal to 5.0V.
4. R
5. Output response time constant is t
output voltage must reach at least 0.63 of its final value in 200msec. Determine the output ripple.
final design. This circuit uses the precision mode VFC configuration for maximum linearity. The NJM3403A quad
op-amp provides the functions of inverter, integrator, regulator, and LED driver.
ripple voltage is: V
B
= 5V/100µA = 50kΩ
S
= 14.0kΩ
R
= 9mSx135µA / 4µF = 304mV
FC
with high linearity which accepts a full scale input voltage of +10V. See Figure 7 for the
0
= 82kΩ and C
R
< 20msec Therefore C
Figure 7. Opto-Isolated VFC
0
= 0.1µF
B
< t
R
/ R
B
= 200 x 10
-3
/ 50 x 10
3
= 4µF Worst case
0
= 83.3Hz. The
Ver.2004-10-25