NJM4151D NJR, NJM4151D Datasheet - Page 8

• Manufacturer Part Number: NJM4151D
• Description: IC V-F/F-V CONVERTER 8DIP
• Manufacturer: NJR
• Type: Volt to Freq & Freq to Voltr

Specifications of NJM4151D

• Frequency - Max: 100kHz
• Full Scale: ±100ppm/°C
• Linearity: ±1%
• Mounting Type: Through Hole
• Package / Case: 8-DIP
• Supply Voltage (max): 22 V
• Supply Voltage (min): 8 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Full Scale Frequency: 100 KHz
• Mounting Style: Through Hole
• Operating Supply Voltage: 9 V, 12 V, 15 V, 18 V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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