LF353N Dual JFET Input Op-Amp
TheLM353Nis a Dual Package Input JFET Operational Amplifier. That is the input of these op-amp are connected through a high-voltage JFET making it suitable for low-noise, low-current and fast switching audio applications commonly used in Dual supply operation.
Pin Configuration
Pin Number |
PinName |
Description |
1 |
OUTPUT-A |
Output of Op-Amp 1 |
2 |
INPUT- A(-) |
Inverting Input of Op-Amp 1 |
3 |
INPUT- B(+) |
Non-Inverting Input of Op-Amp 1 |
4 |
VEE,GND |
Ground or Negative Supply Voltage |
5 |
INPUT- B(+) |
Non-Inverting Input of Op-Amp 2 |
6 |
INPUT- B(-) |
Inverting Input of Op-Amp 2 |
7 |
OUTPUT B |
Output of Op-Amp 2 |
8 |
VCC |
Positive Supply Voltage |
LF353N features and specifications
- Dual Op-Amp with JFET Input
- Supply Voltage: ±18V
- Supply Current: 6.5mA (max)
- Low Input Noise Voltage and Noise Current
- Bandwidth Gain: 4MHz
- High Input Impedance and Slew rate
- Available in 8-pin SOIC and PDIP Package
LF393N Equivalent
TL074,LM1558, MCP6002
LF393N JFET Input Op-Amp
TheLM393Nis a Dual Input JEFET from Texas Instruments. Since the Op-Amp inputs are feed through JFET they provide high input impedance and wide bandwidth (4MHz) with high slew rate (13V/uS). It also provides low input noise and bias current making the IC suitable for Audio amplifier applications.
在放大器设计中使用双supply voltage (±18V), using with single supply will limit the output voltage to 0.7V for low and 1.5V for high. Hence the Op-Amp is more widely used in analog circuit or audio circuits. The digital circuit equivalent for LF393N will be MCP6002 from Microchip.
Applications
- Low-noise Audio circuits
- High-Input Impedance designs
- Sample and Hold Circuit
- High Speed Integrator
2D-Model
