LM748CJ Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The LM748CJ is a general-purpose voltage-feedback operational amplifier from Texas Instruments with externally compensated frequency response. It features 70 dB minimum CMRR, 0.5 µA input bias current, 5 mV maximum offset voltage, and is packaged in an 8-pin ceramic DIP for audio, instrumentation, and control system applications.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LM748CJ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Non-compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- General-purpose voltage-feedback op-amp with external frequency compensation for bandwidth tuning
- Input bias current of 0.5 µA with 70 dB minimum CMRR for moderate-precision signal processing
- External compensation allows user-defined gain-bandwidth product for various feedback topologies
- Wide supply voltage range supporting ±5 V to ±18 V dual-supply configurations
- 8-pin ceramic DIP package for legacy replacement and high-reliability industrial designs
Applications
The LM748CJ is used in audio amplification, active filter design, integrators, and comparator circuits in industrial control systems and laboratory instruments where externally controlled frequency compensation is advantageous. It is a classic op-amp commonly used in legacy circuit maintenance, educational prototypes, and non-critical analog signal conditioning where precision grade devices are not required.
Specifications
| Reach Compliance Code | Unknown |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.5 µA |
| Common-mode Reject Ratio-Min | 70dB |
| Common-mode Reject Ratio-Nom | 90dB |
| Frequency Compensation | NO |
| Input Offset Voltage-Max | 5000 µV |
| JESD-30 Code | R-GDIP-T8 |
| JESD-609 Code | e0 |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -22 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 1 |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max | 2.8mA |
| Supply Voltage Limit-Max | 22V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | TIN LEAD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Voltage Gain-Min | 25000 |
| ## LM748CJ Alternates Showing results | Image |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Non-compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM748CJ:
Frequently Asked Questions
What makes the LM748CJ different from internally compensated op-amps like the LM741?
Unlike the LM741 which has built-in frequency compensation, the LM748CJ requires external compensation capacitors. This allows the user to set the closed-loop bandwidth and slew rate for their specific gain configuration, offering higher bandwidth at gains greater than unity compared to fixed-compensation op-amps.
What is the input offset voltage and CMRR of the LM748CJ?
The LM748CJ has a maximum input offset voltage of 5 mV and a minimum CMRR of 70 dB (typically 90 dB), making it adequate for general-purpose audio and control signal processing but less suitable for high-precision measurement applications.
What supply voltage range does the LM748CJ support?
The LM748CJ operates from dual supply voltages ranging from ±5 V to ±18 V, providing flexibility for use in ±12 V or ±15 V analog system power rails common in laboratory instruments, audio equipment, and industrial control electronics.
What package does the LM748CJ come in and is it a through-hole device?
The LM748CJ is housed in an 8-pin ceramic dual-in-line package (CDIP-8), which is a through-hole device suitable for breadboard prototyping and through-hole PCB assembly. Its ceramic construction provides higher reliability and thermal stability compared to plastic DIP packages.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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