ST LM224A, LM324A User Manual

LM224A - LM324A

Low Power Quad Operational Amplifiers

■Wide gain bandwidth: 1.3MHz

■Large voltage gain: 100dB

■Very low supply current/ampli: 375 A

■Low input bias current: 20nA

■Low input offset voltage: 3mV max.

■Low input offset current: 2nA

■Wide power supply range: Single supply: +3V to +30V Dual supplies: ±1.5V to ±15V

■Input common-mode voltage range includes ground

■ESD internal protection: 2KV

Description

These circuits consist of four independent, high gain, internally frequency compensated operational amplifiers. 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.

All the pins are protected against electrostatic discharges up to 2KV (as a consequence, the

input voltages must not exceed the magnitude of VCC+ or VCC-.)

N

DIP14

(Plastic Package)

D

SO-14

(Plastic Micropackage)

P

TSSOP-14

(Thin Shrink Small Outline Package)

Order Codes

	Part Number	Temperature Range	Package	Packaging
	LM224AN		DIP	Tube
	LM224AD/ADT	-40°C, +105°C	SO	Tube or Tape & Reel
	LM224APT		TSSOP	Tape & Reel
			(Thin Shrink Outline Package)
	LM324AN		DIP	Tube
	LM324AD/ADT	0°C, +70°C	SO	Tube or Tape & Reel
	LM324APT		TSSOP	Tape & Reel
			(Thin Shrink Outline Package)

February 2005

Revision 2

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LM224A-LM324A

Pin & Schematic Diagram

1 Pin & Schematic Diagram

Figure 1: Pin connections (top view)

Figure 2: Schematic diagram (1/4 LM124A)

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Absolute Maximum Ratings				LM224A-LM324A
2 Absolute Maximum Ratings
Table 1: Key parameters and their absolute maximum ratings
Symbol	Parameter	LM124A	LM224A	LM324A	Unit
VCC	Supply voltage		±16 or 32		V
Vi	Input Voltage	-0.3 to Vcc + 0.3			V
Vid	Differential Input Voltage 1		32		V
Ptot	Power DissipationN Suffix	500	500	500	mW
	D Suffix		400	400	mW
	Output Short-circuit Duration 2		Infinite
Iin	Input Current 3		50		mA
Toper	Operating Free-air Temperature Range	-55 to +125	-40 to +105	0 to +70	°C
Tstg	Storage Temperature Range		-65 to +150		°C
	Thermal Resistance Junction to Ambient		103
Rthja	SO14
			100		°C/W
	TSSOP14
			66
	DIP14

1)Either or both input voltages must not exceed the magnitude of VCC+ or VCC-.

2)Short-circuits from the output to VCC can cause excessive heating if VCC > 15V. The maximum output current is approximately 40mA independent of the magnitude of VCC. Destructive dissipation can result from simultaneous short-circuit 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 input diodes clamps. In addition to this diode action, there is also

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 duration than an input is driven negative.

This is not destructive and normal output will set up again for input voltage higher than -0.3V.

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LM224A-LM324A

Electrical Characteristics

3 Electrical Characteristics

Table 2: V

CC

+ = +5V, V

-= Ground, V

o

= 1.4V, T

= +25°C (unless otherwise specified

CC

amb

Symbol

Parameter

Min.

Typ.

Max.

Unit

Vio

Input Offset Voltage - note 1

mV

Tamb = +25°C

2

3

Tmin ≤ Tamb

≤ Tmax

5

Input Offset Current

nA

Iio

Tamb = +25°C

2

20

Tmin ≤ Tamb

≤ Tmax

40

Iib

Input Bias Current - note 2

nA

Tamb = +25°C

20

100

Tmin ≤ Tamb

≤ Tmax

200

Large Signal Voltage Gain

V/mV

VCC+ = +15V, RL = 2kΩ, Vo = 1.4V to 11.4V

Avd

50

100

Tamb = +25°C

Tmin ≤ Tamb

≤ Tmax

25

Supply Voltage Rejection Ratio (Rs ≤ 10kΩ)

dB

SVR

VCC+ = 5V to 30V

65

110

Tamb = +25°C

Tmin ≤ Tamb

≤ Tmax

65

Supply Current, all Amp, no load

mA

Tamb = +25°C VCC = +5V

0.7

1.2

ICC

VCC = +30V

1.5

3

Tmin ≤ Tamb

≤ Tmax VCC = +5V

0.8

1.2

VCC = +30V

1.5

3

Input Common Mode Voltage Range

V

VCC = +30V

- note 3

Vicm

VCC -

Tamb = +25°C

0

Tmin ≤ Tamb

≤ Tmax

0

1.5

VCC -2

Common Mode Rejection Ratio (Rs ≤ 10kΩ)

dB

CMR

Tamb = +25°C

70

80

Tmin ≤ Tamb

≤ Tmax

60

Isource

Output Current Source (Vid = +1V)

mA

VCC = +15V, Vo = +2V

20

40

70

Output Sink Current (Vid = -1V)

Isink

VCC = +15V, Vo = +2V

10

20

mA

VCC = +15V, Vo = +0.2V

12

50

µA

High Level Output Voltage

V

VCC = +30V

RL = 2kΩ

Tamb = +25°C

26

27

Tmin ≤ Tamb

≤ Tmax

RL = 10kΩ

26

VOH

Tamb = +25°C

27

28

Tmin ≤ Tamb

≤ Tmax

27

VCC = +5V, RL = 2kΩ

3.5

Tamb = +25°C

3

Tmin ≤ Tamb

≤ Tmax

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Electrical Characteristics

LM224A-LM324A

Table 2: V

+ = +5V, V

-= Ground, V

o

= 1.4V, T

amb

= +25°C (unless otherwise specified

CC

CC

Symbol

Parameter

Min.

Typ.

Max.

Unit

Low Level Output Voltage (RL = 10kΩ)

mV

VOL

Tamb = +25°C

5

20

Tmin ≤ Tamb

≤ Tmax

20

SR

Slew Rate

V/µs

VCC = 15V, Vi = 0.5 to 3V, RL = 2kΩ, CL = 100pF, unity Gain

0.4

GBP

Gain Bandwidth Product

MHz

VCC = 30V, f =100kHz,Vin = 10mV, RL = 2kΩ, CL = 100pF

1.3

THD

Total Harmonic Distortion

%

f = 1kHz, Av = 20dB, RL = 2kΩ, Vo = 2Vpp, CL = 100pF, VCC = 30V

0.015

en

Equivalent Input Noise Voltage

nV

f = 1kHz, Rs = 100Ω, VCC = 30V

40

-----------

Hz

DVio

Input Offset Voltage Drift

7

30

µV/°C

DIIio

Input Offset Current Drift

10

200

pA/°C

Vo1/Vo2

Channel Separation - note 4

120

dB

1kHz ≤ f ≤ 20kHZ

1)Vo = 1.4V, Rs = 0Ω, 5V < VCC+ < 30V, 0 < Vic < VCC+ - 1.5V

2)The direction of the input current is out of the IC. This current is essentially constant, independent of the state of the output so no loading change exists on the input lines.

3)The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode voltage range is VCC+ - 1.5V, but either or both inputs can go to +32V without damage.

4)Due to the proximity of external components insure that coupling is not originating via stray capacitance between these external parts. This typically can be detected as this type of capacitance increases at higher frequences.

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LM224A-LM324A

Electrical Characteristics

Figure 3: Input bias current vs. ambient temperature

L

Figure 4: Input voltage range

Figure 5: Gain bandwidth product

Figure 6: Current limiting

Figure 7: Supply current

				L L
				L

Figure 8: Common mode rejection ratio

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