Overview
The LF353, produced by Texas Instruments, is a low-cost, high-speed JFET-input dual operational amplifier. It is characterized by its very low input bias and offset currents, high input impedance, and fast slew rate. This device is suitable for a wide range of applications due to its internally trimmed offset voltage and large gain-bandwidth product. The LF353 operates from a single or dual supply and is designed for operation over a temperature range of 0°C to 70°C, making it versatile for various electronic systems.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Power Supply Voltage | VCC | ±3.5 | ±18 | V | |
| Input Offset Voltage | VIO | 5.0 | 10 | mV | |
| Input Offset Current | IIO | 25 | 100 | pA | |
| Input Bias Current | IBIAS | 50 | 200 | pA | |
| Input Resistance | RI | 10^12 | Ω | ||
| Slew Rate | SR | 13 | V/μs | ||
| Gain-Bandwidth Product | GBW | 3 | MHz | ||
| Power Supply Current | ICC | 3.6 | 6.5 | mA | |
| Operating Temperature | TA | 0 | 70 | °C |
Key Features
- Low input bias current: 50 pA typical
- Low input noise current: 0.01 pA/√Hz typical
- High input impedance: 10^12 Ω typical
- Internally trimmed offset voltage
- High slew rate: 13 V/μs typical
- Large gain-bandwidth product: 3 MHz typical
- Low supply current: 3.6 mA typical
- Output protected against shorts with 200-Ω output impedance
Applications
- Motor integrated systems: UPS, drives, and control solutions
- Renewables: Solar inverters
- Pro audio mixers
- Oscilloscopes
- High-speed integrators, digital-to-analog converters, and sample-and-hold circuits
Q & A
- What is the typical input offset voltage of the LF353? The typical input offset voltage is 5.0 mV.
- What is the slew rate of the LF353? The slew rate is 13 V/μs.
- What is the gain-bandwidth product of the LF353? The gain-bandwidth product is 3 MHz.
- What is the operating temperature range of the LF353? The operating temperature range is 0°C to 70°C.
- What is the typical power supply current of the LF353? The typical power supply current is 3.6 mA.
- Can the LF353 be used in single-supply applications? Yes, the LF353 can be operated as a single-supply or dual-supply operational amplifier.
- What is the input resistance of the LF353? The input resistance is 10^12 Ω.
- How is the output of the LF353 protected? The output is protected against shorts with a 200-Ω output impedance.
- What are some common applications of the LF353? Common applications include motor integrated systems, renewables, pro audio mixers, and oscilloscopes.
- What is the typical input bias current of the LF353? The typical input bias current is 50 pA.
