Overview
The LF347N/PB is a high-speed, quad JFET input operational amplifier produced by National Semiconductor, now part of Texas Instruments. This device is characterized by its low input bias current, high input impedance, wide gain bandwidth, and high slew rate, making it suitable for a variety of high-speed applications. The LF347N/PB is available in a 14-pin PDIP package and is designed to operate over a temperature range of 0°C to 70°C.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Supply Voltage | VCC | ±18 | V |
| Differential Input Voltage | VI(DIFF) | 30 | V |
| Input Voltage Range | VI | ±15 | V |
| Operating Temperature Range | TOPR | 0 to +70 | °C |
| Storage Temperature Range | TSTG | -65 to +150 | °C |
| Input Offset Voltage | VIO | -5 to 10 | mV |
| Input Offset Voltage Drift | ∆VIO/∆T | 10 | µV/°C |
| Input Offset Current | IIO | 25 to 100 | pA |
| Input Bias Current | IBIAS | 50 to 200 | pA |
| Large Signal Voltage Gain | GV | 25 to 100 | V/mV |
| Output Voltage Swing | VO(PP) | ±12 to ±13.5 | V |
| Common-Mode Rejection Ratio | CMRR | 80 to 100 | dB |
| Power Supply Rejection Ratio | PSRR | 80 to 100 | dB |
| Input Resistance | RI | 10^12 | Ω |
| Supply Current | ICC | 7.2 to 11 | mA |
| Slew Rate | SR | 13 | V/μs |
| Gain Bandwidth Product | GBW | 4 | MHz |
Key Features
- Low input bias current: 50 pA to 200 pA
- High input impedance: 10^12 Ω
- Wide gain bandwidth: 4 MHz
- High slew rate: 13 V/μs
- Low input offset voltage: -5 mV to 10 mV
- Low total harmonic distortion: ≤0.02%
- Fast settling time to 0.01%: 2 μs
- Low noise and offset voltage drift
- Low supply current: 7.2 mA to 11 mA
Applications
The LF347N/PB is suitable for various high-speed applications, including:
- High-speed integrators
- Digital-to-analog converters
- Sample-and-hold circuits
- Circuits requiring low input offset voltage, low input bias current, high input impedance, high slew rate, and wide bandwidth
Q & A
- What is the typical gain bandwidth product of the LF347N/PB?
The typical gain bandwidth product is 4 MHz.
- What is the slew rate of the LF347N/PB?
The slew rate is 13 V/μs.
- What is the input offset voltage range of the LF347N/PB?
The input offset voltage range is -5 mV to 10 mV.
- What is the input bias current range of the LF347N/PB?
The input bias current range is 50 pA to 200 pA.
- What is the operating temperature range of the LF347N/PB?
The operating temperature range is 0°C to 70°C.
- What is the storage temperature range of the LF347N/PB?
The storage temperature range is -65°C to +150°C.
- What is the typical supply current of the LF347N/PB?
The typical supply current is 7.2 mA to 11 mA.
- What are some common applications of the LF347N/PB?
Common applications include high-speed integrators, digital-to-analog converters, sample-and-hold circuits, and other circuits requiring low input offset voltage and high slew rate.
- Is the LF347N/PB RoHS compliant?
Yes, the LF347N/PB is RoHS compliant.
- What package types are available for the LF347N/PB?
The LF347N/PB is available in a 14-pin PDIP package.
