Document
LM124, LM224x, LM324x
Datasheet
Low-power quad operational amplifiers
QFN16 3x3 TSSOP14
SO14
Features
• Wide gain bandwidth: 1.3 MHz • Input common mode voltage range includes ground • Large voltage gain: 100 dB • Very low supply current/amplifier: 375 µA • Low input bias current: 20 nA • Low input voltage: 3 mV max. • Low input offset current: 2 nA • Wide power supply range:
– Single supply: 3 V to 30 V – Dual supplies: ±1.5 V to ±15 V
Related products
• See TSB572 and TSB611, 36 V newer technology devices, which have enhanced accuracy and ESD rating, reduced power consumption, and automotive grade qualification
• See LM2902 and LM2902W for automotive grade applications
Product status link LM124, LM224x, LM324x
Product reference Part numbers
LM124(1)
LM124
LM224x
LM224, LM224A(2), LM224W(3)
LM324x
LM324, LM324A, LM324W(3)
1. Prefixes: LM1, LM2, and LM3 refer to temperature range
2. Suffix A refers to enhanced Vio performance
3. Suffix W refers to enhanced ESD ratings.
Description
The LM124, LM224x and LM324x consist of four independent, high gain operational amplifiers with frequency compensation implemented internally. They operate from a single power supply over a wide range of voltages.
Operation from split power supplies is also possible and the low-power supply current drain is independent of the magnitude of the power supply voltage.
DS0985 - Rev 8 - September 2019 For further information contact your local STMicroelectronics sales office.
www.st.com
LM124, LM224x, LM324x
Pin connections and schematic diagram
1
Pin connections and schematic diagram
Figure 1. Pin connections (top view)
QFN16 3x3
Output 1 1
Inverting input 1 2
-
Non-inverting input 1 3
+
VCC + 4
Non-inverting input 2 5
+
Inverting input 2 6
-
Output 2 7
14 Output 4
-
13 Inverting input 4
+
12 Non-inverting input 4
11 VCC -
+
10 Non-inverting input 3
-
9 Inverting input 3
8 Output 3
TSSOP14/SO14
1. The exposed pads of the QFN16 3x3 can be connected to VCC- or left floating
DS0985 - Rev 8
page 2/22
LM124, LM224x, LM324x
Pin connections and schematic diagram Figure 2. Schematic diagram (LM224A, LM324A, LM224W, LM324W, one channel)
Figure 3. Schematic diagram (LM124, LM224, LM324, one channel)
DS0985 - Rev 8
page 3/22
LM124, LM224x, LM324x
Absolute maximum ratings and operating conditions
2
Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings
Symbol
Parameter
Value
VCC
Supply voltage
Input voltage
LM224A, LM324A, LM224W, LM324W Vi
Input voltage
LM124, LM224, LM324
±16 or 32 -0.3 to VCC + 0.3
-0.3 to 32
Vid
Differential input voltage (1)
Ptot
Power dissipation: D suffix
Output short-circuit duration (2)
Iin
Input current (3)
Tstg
Storage temperature range
Tj
Maximum junction temperature
Rthja
Thermal resistance junction to ambient (4)
QFN16 3x3 TSSOP14
SO14
32 400 Infinite 50 -65 to 150 150 45 100 103
Rthjc
Thermal resistance junction to case
QFN16 3x3
14
TSSOP14
32
SO14
31
ESD
HBM: human body model (5) MM: machine model (6)
LM224A, LM324A
800
LM224W, LM324W
700
LM124, LM224, LM324
250
100
CDM: charged device model
1500
1. Neither of the input voltages must exceed the magnitude of (VCC +) or (VCC -).
2. Short-circuits from the output to VCC can cause excessive heating if VCC > 15 V. The maximum output current is approximately 40 mA independent of the magnitude of VCC. Destructive dissipation can result from simultaneous short-circuits on all amplifiers.
3. This input current only exists when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistor becoming forward biased and thereby acting as an input diode clamp. In addition to this diode action, there is also an NPN parasitic action on the IC chip. This transistor action can cause the output voltages of the op amps to go to the VCC voltage level (or to ground for a large overdrive) for the time during which an input is driven negative. This is not destructive and normal output starts up again for input voltages higher than -0.3 V.
4. Short-circuits can cause excessive heating. Destructive dissipation can result from simultaneous shortcircuits on all amplifiers. These are typical values given for a single layer board (except for TSSOP which is a two-layer board).
5. Human body model: 100 pF discharged through a 1.5 kΩ resistor between two pins of the device, done for all couples of pin combinations with other pins floating.
6. Machine model: a 200 pF cap is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 Ω), done for all couples of pin combinations with other pins floating.
Unit V
mW mA °C °C/W
V
DS0985 - Rev 8
page 4/22
LM124, LM224x, LM324x
Absolute maximum ratings and operating conditions
Symbol VCC VICM
TOper
Table 2. Operating conditions
Parameter
Supply vo.