The LM741 series are general-purpose operational amplifiers which feature improved performance over industry standards like the LM709. They are direct, plug-in replacements for the 709C, LM201, MC1439, and 748 in most applications.
The amplifiers offer many features which make their application nearly foolproof: overload protection on the input and output, no latch-up when the common-mode range is exceeded, as well as freedom from oscillations.
The LM741C is identical to the LM741 and LM741A except that the LM741C has their performance ensured over a 0°C to +70°C temperature range, instead of −55°C to +125°C.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
LM741 | TO-99 (8) | 9.08 mm × 9.08 mm |
CDIP (8) | 10.16 mm × 6.502 mm | |
PDIP (8) | 9.81 mm × 6.35 mm |
Changes from C Revision (October 2004) to D Revision
Changes from C Revision (March 2013) to D Revision
MIN | MAX | UNIT | |||
---|---|---|---|---|---|
Supply voltage | LM741, LM741A | ±22 | V | ||
LM741C | ±18 | ||||
Power dissipation (4) | 500 | mW | |||
Differential input voltage | ±30 | V | |||
Input voltage (2) | ±15 | V | |||
Output short circuit duration | Continuous | ||||
Operating temperature | LM741, LM741A | –50 | 125 | °C | |
LM741C | 0 | 70 | |||
Junction temperature | LM741, LM741A | 150 | °C | ||
LM741C | 100 | ||||
Soldering information | PDIP package (10 seconds) | 260 | °C | ||
CDIP or TO-99 package (10 seconds) | 300 | ||||
°C | |||||
Storage temperature, Tstg | –65 | 150 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±400 | V |
MIN | NOM | MAX | UNIT | ||
---|---|---|---|---|---|
Supply voltage (VDD-GND) | LM741, LM741A | ±10 | ±15 | ±22 | V |
LM741C | ±10 | ±15 | ±18 | ||
Temperature | LM741, LM741A | –55 | 125 | °C | |
LM741C | 0 | 70 |
THERMAL METRIC(1) | LM741 | UNIT | |||
---|---|---|---|---|---|
LMC (TO-99) | NAB (CDIP) | P (PDIP) | |||
8 PINS | 8 PINS | 8 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 170 | 100 | 100 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 25 | — | — | °C/W |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |||
---|---|---|---|---|---|---|---|---|
Input offset voltage | RS ≤ 10 kΩ | TA = 25°C | 1 | 5 | mV | |||
TAMIN ≤ TA ≤ TAMAX | 6 | mV | ||||||
Input offset voltage adjustment range |
TA = 25°C, VS = ±20 V | ±15 | mV | |||||
Input offset current | TA = 25°C | 20 | 200 | nA | ||||
TAMIN ≤ TA ≤ TAMAX | 85 | 500 | ||||||
Input bias current | TA = 25°C | 80 | 500 | nA | ||||
TAMIN ≤ TA ≤ TAMAX | 1.5 | μA | ||||||
Input resistance | TA = 25°C, VS = ±20 V | 0.3 | 2 | MΩ | ||||
Input voltage range | TAMIN ≤ TA ≤ TAMAX | ±12 | ±13 | V | ||||
Large signal voltage gain | VS = ±15 V, VO = ±10 V, RL ≥ 2 kΩ | TA = 25°C | 50 | 200 | V/mV | |||
TAMIN ≤ TA ≤ TAMAX | 25 | |||||||
Output voltage swing | VS = ±15 V | RL ≥ 10 kΩ | ±12 | ±14 | V | |||
RL ≥ 2 kΩ | ±10 | ±13 | ||||||
Output short circuit current | TA = 25°C | 25 | mA | |||||
Common-mode rejection ratio | RS ≤ 10 Ω, VCM = ±12 V, TAMIN ≤ TA ≤ TAMAX | 80 | 95 | dB | ||||
Supply voltage rejection ratio | VS = ±20 V to VS = ±5 V, RS ≤ 10 Ω, TAMIN ≤ TA ≤ TAMAX | 86 | 96 | dB | ||||
Transient response | Rise time | TA = 25°C, unity gain | 0.3 | μs | ||||
Overshoot | 5% | |||||||
Slew rate | TA = 25°C, unity gain | 0.5 | V/μs | |||||
Supply current | TA = 25°C | 1.7 | 2.8 | mA | ||||
Power consumption | VS = ±15 V | TA = 25°C | 50 | 85 | mW | |||
TA = TAMIN | 60 | 100 | ||||||
TA = TAMAX | 45 | 75 |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |||
---|---|---|---|---|---|---|---|---|
Input offset voltage | RS ≤ 50 Ω | TA = 25°C | 0.8 | 3 | mV | |||
TAMIN ≤ TA ≤ TAMAX | 4 | mV | ||||||
Average input offset voltage drift | 15 | μV/°C | ||||||
Input offset voltage adjustment range |
TA = 25°C, VS = ±20 V | ±10 | mV | |||||
Input offset current | TA = 25°C | 3 | 30 | nA | ||||
TAMIN ≤ TA ≤ TAMAX | 70 | |||||||
Average input offset current drift |
0.5 | nA/°C | ||||||
Input bias current | TA = 25°C | 30 | 80 | nA | ||||
TAMIN ≤ TA ≤ TAMAX | 0.21 | μA | ||||||
Input resistance | TA = 25°C, VS = ±20 V | 1 | 6 | MΩ | ||||
TAMIN ≤ TA ≤ TAMAX, VS = ±20 V | 0.5 | |||||||
Large signal voltage gain | VS = ±20 V, VO = ±15 V, RL ≥ 2 kΩ | TA = 25°C | 50 | V/mV | ||||
TAMIN ≤ TA ≤ TAMAX | 32 | |||||||
VS = ±5 V, VO = ±2 V, RL ≥ 2 kΩ, TAMIN ≤ TA ≤ TAMAX | 10 | |||||||
Output voltage swing | VS = ±20 V | RL ≥ 10 kΩ | ±16 | V | ||||
RL ≥ 2 kΩ | ±15 | |||||||
Output short circuit current | TA = 25°C | 10 | 25 | 35 | mA | |||
TAMIN ≤ TA ≤ TAMAX | 10 | 40 | ||||||
Common-mode rejection ratio | RS ≤ 50 Ω, VCM = ±12 V, TAMIN ≤ TA ≤ TAMAX | 80 | 95 | dB | ||||
Supply voltage rejection ratio | VS = ±20 V to VS = ±5 V, RS ≤ 50 Ω, TAMIN ≤ TA ≤ TAMAX | 86 | 96 | dB | ||||
Transient response | Rise time | TA = 25°C, unity gain | 0.25 | 0.8 | μs | |||
Overshoot | 6% | 20% | ||||||
Bandwidth (2) | TA = 25°C | 0.437 | 1.5 | MHz | ||||
Slew rate | TA = 25°C, unity gain | 0.3 | 0.7 | V/μs | ||||
Power consumption | VS = ±20 V | TA = 25°C | 80 | 150 | mW | |||
TA = TAMIN | 165 | |||||||
TA = TAMAX | 135 |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
Input offset voltage | RS ≤ 10 kΩ | TA = 25°C | 2 | 6 | mV | ||
TAMIN ≤ TA ≤ TAMAX | 7.5 | mV | |||||
Input offset voltage adjustment range |
TA = 25°C, VS = ±20 V | ±15 | mV | ||||
Input offset current | TA = 25°C | 20 | 200 | nA | |||
TAMIN ≤ TA ≤ TAMAX | 300 | ||||||
Input bias current | TA = 25°C | 80 | 500 | nA | |||
TAMIN ≤ TA ≤ TAMAX | 0.8 | μA | |||||
Input resistance | TA = 25°C, VS = ±20 V | 0.3 | 2 | MΩ | |||
Input voltage range | TA = 25°C | ±12 | ±13 | V | |||
Large signal voltage gain | VS = ±15 V, VO = ±10 V, RL ≥ 2 kΩ | TA = 25°C | 20 | 200 | V/mV | ||
TAMIN ≤ TA ≤ TAMAX | 15 | ||||||
Output voltage swing | VS = ±15 V | RL ≥ 10 kΩ | ±12 | ±14 | V | ||
RL ≥ 2 kΩ | ±10 | ±13 | |||||
Output short circuit current | TA = 25°C | 25 | mA | ||||
Common-mode rejection ratio | RS ≤ 10 kΩ, VCM = ±12 V, TAMIN ≤ TA ≤ TAMAX | 70 | 90 | dB | |||
Supply voltage rejection ratio | VS = ±20 V to VS = ±5 V, RS ≤ 10 Ω, TAMIN ≤ TA ≤ TAMAX | 77 | 96 | dB | |||
Transient response | Rise time | TA = 25°C, Unity Gain | 0.3 | μs | |||
Overshoot | 5% | ||||||
Slew rate | TA = 25°C, Unity Gain | 0.5 | V/μs | ||||
Supply current | TA = 25°C | 1.7 | 2.8 | mA | |||
Power consumption | VS = ±15 V, TA = 25°C | 50 | 85 | mW |
The LM74 devices are general-purpose operational amplifiers which feature improved performance over industry standards like the LM709. It is intended for a wide range of analog applications. The high gain and wide range of operating voltage provide superior performance in integrator, summing amplifier, and general feedback applications. The LM741 can operate with a single or dual power supply voltage. The LM741 devices are direct, plug-in replacements for the 709C, LM201, MC1439, and 748 in most applications.
The LM741 features overload protection circuitry on the input and output. This prevents possible circuit damage to the device.
The LM741 is designed so that there is no latch-up occurrence when the common-mode range is exceeded. This allows the device to function properly without having to power cycle the device.
The LM741 is pin-to-pin direct replacements for the LM709C, LM201, MC1439, and LM748 in most applications. Direct replacement capabilities allows flexibility in design for replacing obsolete parts.
The LM741 can be operated in an open-loop configuration. The magnitude of the open-loop gain is typically large thus for a small difference between the noninverting and inverting input terminals, the amplifier output will be driven near the supply voltage. Without negative feedback, the LM741 can act as a comparator. If the inverting input is held at 0 V, and the input voltage applied to the noninverting input is positive, the output will be positive. If the input voltage applied to the noninverting input is negative, the output will be negative.
In a closed-loop configuration, negative feedback is used by applying a portion of the output voltage to the inverting input. Unlike the open-loop configuration, closed loop feedback reduces the gain of the circuit. The overall gain and response of the circuit is determined by the feedback network rather than the operational amplifier characteristics. The response of the operational amplifier circuit is characterized by the transfer function.
NOTE
Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.
The LM741 is a general-purpose amplifier than can be used in a variety of applications and configurations. One common configuration is in a noninverting amplifier configuration. In this configuration, the output signal is in phase with the input (not inverted as in the inverting amplifier configuration), the input impedance of the amplifier is high, and the output impedance is low. The characteristics of the input and output impedance is beneficial for applications that require isolation between the input and output. No significant loading will occur from the previous stage before the amplifier. The gain of the system is set accordingly so the output signal is a factor larger than the input signal.
As shown in Figure 1, the signal is applied to the noninverting input of the LM741. The gain of the system is determined by the feedback resistor and input resistor connected to the inverting input. The gain can be calculated by Equation 1:
The gain is set to 2 for this application. R1 and R2 are 4.7-k resistors with 5% tolerance.
The LM741 can be operated in either single supply or dual supply. This application is configured for dual supply with the supply rails at ±15 V. The input signal is connected to a function generator. A 1-Vpp, 10-kHz sine wave was used as the signal input. 5% tolerance resistors were used, but if the application requires an accurate gain response, use 1% tolerance resistors.
The waveforms in Figure 2 show the input and output signals of the LM741 non-inverting amplifier circuit. The blue waveform (top) shows the input signal, while the red waveform (bottom) shows the output signal. The input signal is 1.06 Vpp and the output signal is 1.94 Vpp. With the 4.7-kΩ resistors, the theoretical gain of the system is 2. Due to the 5% tolerance, the gain of the system including the tolerance is 1.992. The gain of the system when measured from the mean amplitude values on the oscilloscope was 1.83.