Overview
The LM348MX, produced by Texas Instruments, is a quadruple operational amplifier that consists of four independent, high-gain, internally compensated op-amps. This device is designed to have operating characteristics similar to the industry-standard µA741 op-amp. It is known for its low supply-current drain, low input offset voltage, and low input bias and offset currents, making it a versatile component for various analog circuit applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max |
|---|---|---|---|---|
| Supply Voltage | ±18V | ±18V | ||
| Differential Input Voltage | ±36V | ±36V | ||
| Output Short Circuit Duration | Continuous | Continuous | ||
| Power Dissipation (Pd at 25°C) | PDIP (NFF) | 750 mW | ||
| Thermal Resistance (θjA) | PDIP (NFF) | 100°C/W | ||
| Maximum Junction Temperature (TjMAX) | 100°C | |||
| Input Offset Voltage | TA = 25°C, RS ≤10 kΩ | 1.0 mV | 5.0 mV | 6.0 mV |
| Input Offset Current | TA = 25°C | 4 nA | 25 nA | 50 nA |
| Input Bias Current | TA = 25°C | 30 nA | 100 nA | 200 nA |
| Input Resistance | TA = 25°C | 0.8 MΩ | 2.5 MΩ | 2.5 MΩ |
| Supply Current All Amplifiers | TA = 25°C, VS = ±15V | 2.4 mA | 3.6 mA | 4.5 mA |
| Large Signal Voltage Gain | TA = 25°C, VS = ±15V, VOUT = ±10V, RL ≥2 kΩ | 25 V/mV | 160 V/mV | 160 V/mV |
| Small Signal Bandwidth | TA = 25°C, AVD = 1 | 1 MHz | ||
| Phase Margin | TA = 25°C, AVD = 1 | 60° | ||
| Slew Rate | TA = 25°C, AVD = 1 | 0.5 V/μs |
Key Features
- Four independent, high-gain, internally compensated operational amplifiers.
- Low supply-current drain: 0.6 mA per amplifier (typical).
- Low input offset voltage: 1.0 mV (minimum) to 6.0 mV (maximum) at 25°C.
- Low input offset current: 4 nA (minimum) to 50 nA (maximum) at 25°C.
- Low input bias current: 30 nA (minimum) to 200 nA (maximum) at 25°C.
- High degree of isolation between amplifiers: 120 dB crosstalk attenuation.
- Class AB output stage with input/output overload protection.
- Unity-gain bandwidth: 1 MHz at 25°C.
- Phase margin: 60° at 25°C.
Applications
- General-purpose analog circuitry.
- Audio and video amplifiers.
- Active filters and integrators.
- Voltage regulators and power supplies.
- Medical and industrial instrumentation.
- Automotive and aerospace systems.
Q & A
- What is the supply voltage range for the LM348MX?
The supply voltage range for the LM348MX is ±18V.
- What is the maximum differential input voltage for the LM348MX?
The maximum differential input voltage for the LM348MX is ±36V.
- What is the typical input offset voltage of the LM348MX?
The typical input offset voltage of the LM348MX is 5.0 mV at 25°C.
- How many operational amplifiers are included in the LM348MX?
The LM348MX includes four independent operational amplifiers.
- What is the unity-gain bandwidth of the LM348MX?
The unity-gain bandwidth of the LM348MX is 1 MHz at 25°C.
- What is the phase margin of the LM348MX?
The phase margin of the LM348MX is 60° at 25°C.
- What is the typical supply current for all amplifiers in the LM348MX?
The typical supply current for all amplifiers in the LM348MX is 3.6 mA at 25°C with VS = ±15V.
- What is the maximum junction temperature for the LM348MX?
The maximum junction temperature for the LM348MX is 100°C.
- What is the crosstalk attenuation between amplifiers in the LM348MX?
The crosstalk attenuation between amplifiers in the LM348MX is 120 dB.
- What are some common applications of the LM348MX?
The LM348MX is commonly used in general-purpose analog circuitry, audio and video amplifiers, active filters, voltage regulators, medical and industrial instrumentation, and automotive and aerospace systems.
