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LESHAN RADIO COMPANY, LTD.
General Description
The LR324 consists of four independent, high gain and internally frequency compensated operational amplifiers. It is specifically designed to operate from a single power supply. Operation from split power supply is also possible and the low power supply current drain is independent of the magnitude of the power supply voltages. The LR324 series are Compatible with Industry standard 324. The LR324 series are available in 2 Packages: DIP-14 and SOIC-14.
Features
Internally Frequency Compensated Large Voltage Gain Low Input Bias Current Low Input Offset Voltage Large Output Voltage Swing Wide Power Supply Voltage Range: Single Supply 3V to 30V or Dual Supplies 1.5V to 15V Low Supply Current Drain: 600 A
Applications
Battery Charger Cordless Telephone Switching Power Supply
DIP-14
SOIC-14
Figure 1. Package Types of LR324
LR324-1/10
LESHAN RADIO COMPANY, LTD.
Pin Configuration
M Package/P Package
(SOIC-14/DIP-14)
OUTPUT 1 INPUT 1INPUT 1+ VCC INPUT 2+ INPUT 2OUTPUT 2 1 2 3 4 5 6 7 14 13 12 11 10 9 8
Top View Figure 2. Pin Configuration of LR324
OUTPUT 4 INPUT 4INPUT 4+ GND INPUT 3+ INPUT 3OUTPUT 3
Functional Block Diagram
VCC
6uA
4uA
100uA
Q5 Q6 Q2 INPUTQ1 Q3 Q4 Rsc OUTPUT INPUT+ Q11 Q10 Q8 Q9 Q12 50uA Q13 Cc Q7
Figure 3. Functional Block Diagram of LR324 (Each Amplifier)
LR324-2/10
LESHAN RADIO COMPANY, LTD.
Ordering Information
Package SOIC-14 Temperature Range -40 to 85oC Part Number LR324M Packing Type Tube/Reel
DIP-14 LR324P Tube Some of our products are available in Lead Free packages; If buyers need Lead Free product, please add -E1 after the part number in your order. For example, LR358M is a standard tin-lead product, LR358M-E1 means a Lead Free product.
Absolute Maximum Ratings
Parameter Power Supply Voltage Differential Input Voltage Input Voltage Symbol VCC VID VIC Value 32 32 -0.3 to 32 Unit V V V
Output Short Circuit to Ground (One Amplifier) VCC 12V and TA = 25oC Power Dissipation Operating Temperature Range Storage Temperature Range
Continuous
PD
TOP TSTG
720
-30 to 85 -55 to 125
mW
o
C C
o
LR324-3/10
LESHAN RADIO COMPANY, LTD.
Electrical Characteristics
CC=+5V,
GND=0V, TA=25 oC unless otherwise specified.
Test Conditions Min Typ Max Unit
Parameter Input Offset Voltage Input Bias Current Input Offset Current Input Common Mode Voltage Range
Symbol VIO IBIAS IIO VIR
VO: 1.4V, RS: 0 , VCC: from 5V to 15V
IIN+ or IIN-, VCM=0V IIN+ or IIN-, VCM=0V VCC=15V RL= Over full temperature range on all VCC=30V OP Amps VCC=15V, RL VO=1V to 11V 25 65 65 0
2
45 5
7
250 50 VCC-1.5
mV
nA nA V
Supply Current
ICC
0.6 1.5 100 80 100 120 20 10 40 20 3
2
mA
Large Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Channel Separation (Note 6) Source Output Current Sink
GV CMRR PSRR CS ISOURCE ISINK
dB dB dB dB mA mA
DC, VCC=15V, VCM=0V to (VCC-1.5)V VCC=5V to 15V f=1KHz to 20KHz (Input Referred) V+=1V, V- =0V, VCC=15V, VO=2V V- =1V, V+=0V, VCC=15V, VO=2V
LR324-4/10
LESHAN RADIO COMPANY, LTD.
Typical Performance Characteristics
8 7
25 30
Input Voltage (V)
6
Input Current (nA)
NEGATIVE
5 4
20
VCC=15V
15
POSITIVE
3 2 1 0 0 2 4 6 8
10
5
0 -40
-20
0
20
40
60
80
100
120
Power Supply Voltage (V)
Temperature (oC)
Figure 4. Input Voltage Range
Figure 5. Input Current
4.0 3.5
120
Supply Current Drain (mA)
VCC
110
ID
3.0
mA
A
Voltage Gain (dB)
2.5 2.0 1.5 1.0 0.5 0.0 0 2 4 6 8 10 12 14 16 18 20
100
90
RL=2K RL=20K
80
TA = 0 C TO 85 C
70
o
o
60 0 2 4 6 8 10 12 14 16 18 20
Power Supply Voltage (V)
Power Supply Voltage (V)
Figure 6. Supply Current
Figure 7. Voltage Gain
110
3
Voltage (V)
100
2 1 0 3
VCC =15V RL = 2K
80
Voltage Gain (dB)
70 60 50 40 30 20 10 0 1HZ 10HZ 100HZ 1kHZ 10kHZ 100kHZ 1MHZ
VIN VCC/2 0.1uF R 10M
Output
90
TA: -40 C TO 85 C VCC:10V TO 15VDC
o
o
2
VCC VO
Voltage (V)
1 0
Input
0
10
20
30
40
50
Frequency (Hz)
Time (uS)
Figure 8. Open Loop Frequency Response
Figure 9. Voltage Follower Pulse Response
LR324-5/10
LESHAN RADIO COMPANY, LTD.
Typical Performance Characteristics (Continued)
600 550
TA = 25oC VCC = 15V
VIN 50pF
20
VOUT
R 100K
Output Voltage (mV)
Output Swing (VP-P)
500 450 400 350 300 250
R 1K
+15 VDC VO
15
VIN +7VDC
R 2K
10
5
0
10
20
30
40
50
0 1K
10K
100K
1000K
Time (uS)
Frequency (Hz)
Figure 10. Voltage Follower Pulse Response (Small Signal)
Figure 11. Large Signal Frequency Response
8
10
7
VCC
Output Voltage Reference To VCC (V)
VCC/2
Vo
Output Voltage (V)
6
1
5
IO
4
3
0.1
VCC=+5V
VCC=+15V
VCC/2
VCC
IO
2
INDEPENDENT OF VCC, TA = 25 C
o
Vo
1 1E-3
0.01
0.1
1
10
100
0.01 1E-3
0.01
0.1
1
10
100
Output Source Current (mA)
Output Sink Current (mA)
Figure 12. Output Characteristics Current Sourcing
Figure 13. Output Characteristics Current Sinking
100 90 80
Output Current (mA)
70 60 50 40 30 20 10 0 -40
IO
-20
0
20
40
60
80
Temperature
(oC)
Figure 14. Current Limiting
LR324-6/10
LESHAN RADIO COMPANY, LTD.
Typical Applications
R1
Opto Isolator
R6
1/4 LR324 SMPS + GND R7 Battery Pack
AC Line
R3
R4
R5
Current R2 Sense
-
VCC
1/4 LR324 +
LR431
GND R8
Figure 15. Battery Charger
R1 910K
R1 100K +V1 +V2 R2 100K R3 100K +V3 +V4 R4 100K + R5 1/4 LR324 100K R6 100K VO
R2 100K R3 91K VIN(+) 1/4 LR324 + VO RL VCC
Figure 16. DC Summing Amplifier
Figure 17. Power Amplifier
LR324-7/10
LESHAN RADIO COMPANY, LTD.
Typical Applications (Continued)
VCC + 2V + 2V -
R1 100K
R1 2K
R2 1M
R3 2K
R2
C1 0.1uF
1/4 LR324
CO VO RB 6.2K R4 51K VCC R5 51K AV=1+R2/R1 AV=11 (As shown) RL 10K
1/4 LR324 + R4 3K I1 1mA I2
+ R3 51K
AC
Figure 18. Fixed Current Sources
Figure 19. AC Coupled Non-Inverting Amplifier
R1
1M
C1 0.01uF
0.001uF
R2 100K
R1 16K R2 16K + C2 0.01uF 1/4 LR324 R3 100k
1/4 LR324 + R3 100K VCC R4 100K R5 100K VO
VIN
V0 0 f0 R4 100k fo=1KHz Q=1 AV=2
Figure 20. Pulse Generator
Figure 21. DC Coupled Low-Pass RC Active Filter
LR324-8/10
LESHAN RADIO COMPANY, LTD.
Mechanical Dimensions
DIP-14
Unit: mm
LR324-9/10
LESHAN RADIO COMPANY, LTD.
Mechanical Dimensions (Continued)
SOIC-14
Unit: mm
LR324-10/10

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