LM124 — Datasheet Summary, Specs & Alternatives

01 — Overview

This Texas Instruments datasheet covers the LM124, LM224, LM324, and LM2902 families of quadruple operational amplifiers. The document defines their scope as high-gain, frequency-compensated devices designed for single-supply operation from 3V to 32V (or dual supplies). Key parameters include a typical supply current drain of 0.8mA independent of voltage, an input offset voltage of 3mV, and a differential input voltage range equal to the maximum rated supply voltage. These chips feature internal frequency compensation and are suitable for transducer amplification and digital interface applications.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	700 µA	1.2 mA	Tamb = 25 °C, VCC = 5V
output current	20 mA	40 mA	70 mA	VCC = 15 V, Vo = 2 V
supply voltage range	3 V	—	30 V	Single supply
input offset voltage drift	—	7 µV/°C	—
input offset voltage	—	2 mV	3 mV	Tamb = 25 °C
gain bandwidth	—	1.3 MHz	—	Gain bandwidth product; VCC = 30 V, f = 100 kHz, Vin = 10 mV, RL = 2 kΩ, CL = 100 pF
cmrr	70 dB	80 dB	—	Tamb = 25 °C
operating temperature	-55 °C	—	125 °C	LM124
power dissipation	—	—	400 mW
input offset current	—	2 nA	20 nA	Tamb = 25 °C
input bias current	—	20 nA	100 nA	Tamb = 25 °C
slew rate	—	400 kV/s	—	Slew rate; VCC = 15 V, Vi = 0.5 to 3 V, RL = 2 kΩ, CL = 100 pF, unity gain
psrr	65 dB	110 dB	—	Tamb = 25 °C
input voltage noise density	—	40 nV/√Hz	—
output voltage high	26 V	27 V	—	High level output voltage, VCC = 30 V, RL = 2 kΩ; Tamb = 25 °C
output voltage low	—	5 mV	20 mV	Low level output voltage, RL = 10 kΩ; Tamb = 25 °C
channel count	—	4	—

03 — Alternatives

Closest matches to LM124

LM158 2.0× lower output current, 1.9× lower gain bandwidth, 1.6× lower operating temperature

LM2902B 4.0× lower input offset current, 2.5× higher output voltage low, 2.0× lower output current

BA10324AF 2.6× lower gain bandwidth, 2.5× higher input offset current, 2.0× lower slew rate

TL062ACD 8.8× higher slew rate, 3.5× lower quiescent current, 1.5× higher input bias current

TLV2370 20.0× higher output voltage low, 10.5× lower output voltage high, 10.0× lower output current

TL062 8.8× higher slew rate, 3.5× lower quiescent current, 1.5× higher input offset voltage

LM741 10.0× higher input offset current, 4.0× higher input bias current, 3.0× lower gain bandwidth

LMV358 17.5× lower quiescent current, 4.1× lower supply voltage range, 4.0× lower input offset voltage

04 — FAQ

Frequently asked questions

How many channels does the LM124 have?

The LM124 has 4 channels.

What is the common-mode rejection ratio (CMRR) of the LM124 at Tamb = 25 °C?

The CMRR is 80 dB at Tamb = 25 °C.

What is the gain bandwidth product of the LM124?

The gain bandwidth product is 1.3 MHz at VCC = 30 V, f = 100 kHz, Vin = 10 mV, RL = 2 kΩ, and CL = 100 pF.

What is the input bias current of the LM124 at Tamb = 25 °C?

The input bias current is 20 nA at Tamb = 25 °C.

What is the input offset current of the LM124 at Tamb = 25 °C?

The input offset current is 2 nA at Tamb = 25 °C.

What is the input offset voltage of the LM124 at Tamb = 25 °C?

The input offset voltage is 2 mV at Tamb = 25 °C.

What is the input offset voltage drift for the LM124?

The input offset voltage drift is 7 µV/°C.

What is the input voltage noise density of the LM124?

The input voltage noise density is 40 nV/√Hz.