Overview
The LM148J/PB, manufactured by Texas Instruments, is a quad operational amplifier (op amp) that integrates four independent, high-gain, internally compensated op amps. This device is designed to provide functional characteristics identical to those of the familiar 741 operational amplifier. It is particularly useful in applications where multiple 741 or 1558 type amplifiers are required, or where amplifier matching or high packing density is necessary. The LM148J/PB offers low power consumption, with a total supply current comparable to that of a single 741 op amp, and features low input offset voltage, low input offset current, and low input bias current.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 4 |
| Total Supply Voltage (Max) | 44 V |
| Total Supply Voltage (Min) | 10 V |
| Gain Bandwidth Product (Typ) | 1 MHz |
| Slew Rate (Typ) | 0.5 V/µs |
| Input Offset Voltage (Max) | 5 mV |
| Input Offset Current (Max) | 25 nA |
| Input Bias Current (Max) | 30 nA |
| Output Current per Channel (Typ) | 25 mA |
| Operating Temperature Range | -55°C to 125°C |
| Package/Case | 14-CDIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
Key Features
- 741 Op Amp Operating Characteristics
- Class AB Output Stage—No Crossover Distortion
- Pin Compatible With the LM124
- Overload Protection for Inputs and Outputs
- Low Supply Current Drain: 0.6 mA/Amplifier
- Low Input Offset Voltage: 1 mV
- Low Input Offset Current: 4 nA
- Low Input Bias Current: 30 nA
- High Degree of Isolation Between Amplifiers: 120 dB
Applications
The LM148J/PB is suitable for a variety of applications where multiple op amps are required. These include:
- Instrumentation amplifiers: The device can be used to build low-cost instrumentation amplifiers with high common-mode rejection ratio (CMRR).
- State-variable filters: It can be employed in state-variable filter circuits to achieve predictable results.
- Peak detectors: The LM148J/PB can be used in low drift peak detector circuits with bias current compensation.
- General-purpose amplification: It is ideal for any application requiring multiple 741 or 1558 type op amps, offering high packing density and low power consumption.
Q & A
- Q: What is the LM148J/PB and its main features?
A: The LM148J/PB is a quad operational amplifier with four independent, high-gain, internally compensated op amps. It features low power consumption, low input offset voltage, and high isolation between amplifiers. - Q: What is the operating temperature range of the LM148J/PB?
A: The operating temperature range is -55°C to 125°C. - Q: What is the gain bandwidth product of the LM148J/PB?
A: The gain bandwidth product is 1 MHz. - Q: How many channels does the LM148J/PB have?
A: The LM148J/PB has four independent channels. - Q: What is the typical slew rate of the LM148J/PB?
A: The typical slew rate is 0.5 V/µs. - Q: Is the LM148J/PB pin compatible with other op amps?
A: Yes, it is pin compatible with the LM124. - Q: What kind of output stage does the LM148J/PB have?
A: The LM148J/PB has a Class AB output stage with no crossover distortion. - Q: How much current does each amplifier in the LM148J/PB typically consume?
A: Each amplifier typically consumes 0.6 mA of supply current. - Q: What is the maximum output current per channel for the LM148J/PB?
A: The maximum output current per channel is 25 mA. - Q: How can I ensure the authenticity of the LM148J/PB from Texas Instruments?
A: Ensure you purchase from authorized distributors or suppliers who rigorously test and verify the credentials of the manufacturers and agents. - Q: What is the return or replacement process for the LM148J/PB if it is defective?
A: Defects must be reported within the specified warranty period, and the product must be unused and in its original packaging. Obtain Return Authorization from the supplier before returning the product.
