LESHAN RADIO COMPANY, LTD. LR324 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. SOP-14 Package . . Package of LR324 is DIP-14 Package of LR324D is SOP-14 Features g g g g g g g 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: 600PA DIP-14 Pin Configuration Package/Package (DIP-14/SOP-14) Applications g g g Battery Charger Cordless Telephone Switching Power Supply OUTPUT 1 1 14 OUTPUT 4 INPUT 1- 2 13 INPUT 4- INPUT 1+ 3 12 INPUT 4+ VCC 4 11 GND INPUT 2+ 5 10 INPUT 3+ INPUT 2- 6 9 INPUT 3- OUTPUT 2 7 8 OUTPUT 3 Top View Figure 1. Pin Configuration of LR324/LR324D 1/10 LESHAN RADIO COMPANY, LTD. LR324 Functional Block Diagram VCC 6uA 4uA 100uA Q5 Q6 Q2 INPUT- Q3 Cc Q7 Q4 Q1 Rsc OUTPUT INPUT+ Q11 Q10 Q8 Q9 Q13 Q12 50uA Figure 2. Functional Block Diagram of LR324/LR324D (Each Amplifier) 2/10 LESHAN RADIO COMPANY, LTD. LR324 Ordering Information Package Temperature Range DIP-14 Part Number -40 to 85oC SOP-14 Packing Type LR324 Tube LR324D Tube Absolute Maximum Ratings Parameter Symbol Value Unit Power Supply Voltage VCC 32 V Differential Input Voltage VID 32 V Input Voltage VIC -0.3 to 32 V Output Short Circuit to Ground (One Amplifier) VCC d12V and TA = 25oC Continuous 720 mW Power Dissipation PD Operating Temperature Range TOP -30 to 85 o Storage Temperature Range TSTG -55 to 125 o C C 3/10 LESHAN RADIO COMPANY, LTD. LR324 Electrical Characteristics CC=+5V, Parameter Input Offset Voltage GND=0V, TA=25 oC unless otherwise specified. Symbol Test Conditions VIO VO: 1.4V, RS: 0:, VCC: from 5V to 15V Min Typ Max 2 7 Unit mV IBIAS IIN+ or IIN-, VCM=0V 45 250 nA Input Offset Current IIO IIN+ or IIN-, VCM=0V 5 50 nA Input Common Mode Voltage Range VIR VCC=15V VCC-1.5 V Supply Current ICC RL= f Over full temperature range on all VCC=30V OP Amps Input Bias Current Large Signal Voltage Gain GV 0 0.6 1.5 100 dB dB DC, VCC=15V, VCM=0V to (VCC-1.5)V 65 80 Power Supply Rejection Ratio PSRR VCC=5V to 15V 65 100 Source Sink 3 25 CMRR Output Current mA VCC=15V, RLt.:VO=1V to 11V Common Mode Rejection Ratio Channel Separation (Note 6) 2 120 dB CS f=1KHz to 20KHz (Input Referred) dB ISOURCE V+=1V, V- =0V, VCC=15V, VO=2V 20 40 mA ISINK V- =1V, V+=0V, VCC=15V, VO=2V 10 20 mA 4/10 LESHAN RADIO COMPANY, LTD. LR324 Typical Performance Characteristics 8 30 7 NEGATIVE Input Current (nA) Input Voltage (V) 25 6 5 4 POSITIVE 3 2 VCC=15V 20 15 10 5 1 0 0 2 4 6 0 -40 8 -20 0 20 40 60 80 100 120 Temperature (oC) Power Supply Voltage (V) Figure 3. Input Voltage Range Figure 4. Input Current 4.0 120 VCC 110 3.0 A mA Voltage Gain (dB) Supply Current Drain (mA) 3.5 ID 2.5 2.0 1.5 o 1.0 100 RL=2K: RL=20K: 90 80 o TA = 0 C TO 85 C 70 0.5 0.0 60 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 Power Supply Voltage (V) 12 14 16 18 20 Figure 6. Voltage Gain 3 90 o o TA: -40 C TO 85 C VCC:10V TO 15VDC 80 70 Output 100 Voltage (V) 110 VCC =15V 2 RL = 2K: 1 0 3 60 R 10M 50 0.1uF 2 VCC VO 30 VCC/2 VIN 10 0 1HZ 10HZ 100HZ 1kHZ 10kHZ 100kHZ Voltage (V) 40 Input Voltage Gain (dB) 10 Power Supply Voltage (V) Figure 5. Supply Current 20 8 1 0 1MHZ 0 Frequency (Hz) Figure 7. Open Loop Frequency Response 10 20 30 40 50 Time (uS) Figure 8. Voltage Follower Pulse Response 5/10 LESHAN RADIO COMPANY, LTD. LR324 Typical Performance Characteristics (Continued) 550 TA = 25oC 500 VCC = 15V 20 VOUT R 100K VIN Output Swing (VP-P) Output Voltage (mV) 600 50pF 450 400 350 300 +15 V DC R 1K 15 VO +7VDC VIN R 2K 10 5 250 0 10 20 30 40 0 1K 50 10K Figure 9. Voltage Follower Pulse Response (Small Signal) 10 7 VCC/2 Output Voltage (V) VCC 6 Vo 5 IO 4 3 1 0.1 VCC=+5V VCC VCC=+15V IO V CC/2 o INDEPENDENT OF VCC, TA = 25 C 2 1 1E-3 1000K Figure 10. Large Signal Frequency Response 8 Output Voltage Reference To VCC (V) 100K Frequency (Hz) Time (uS) 0.01 0.1 Vo 1 10 100 0.01 1E-3 0.01 0.1 1 10 100 Output Sink Current (mA) Output Source Current (mA) Figure 11. Output Characteristics Current Sourcing Figure 12. Output Characteristics Current Sinking 100 90 Output Current (mA) 80 70 60 50 40 IO 30 20 10 0 -40 -20 0 20 40 60 80 o Temperature ( C) Figure 13. Current Limiting 6/10 LESHAN RADIO COMPANY, LTD. LR324 Typical Applications R1 Opto Isolator R6 - AC Line 1/4 LR324 SMPS + Battery Pack GND R7 R5 R4 R3 Current R2 Sense VCC - 1/4 LR324 + GND LR431 R8 Figure 14. Battery Charger R1 910K R1 100K +V1 +V2 R2 100K R3 100K - R5 1/4 LR324 100K - VO R3 91K VIN(+) VCC 1/4 LR324 + VO RL R6 100K +V3 +V4 R2 100K + R4 100K Figure 15. DC Summing Amplifier Figure 16. Power Amplifier 7/10 LESHAN RADIO COMPANY, LTD. LR324 Typical Applications (Continued) VCC + 2V - R2 1M R1 100K + 2V - R3 2K R1 2K C1 0.1uF R2 - CO 1/4 LR324 - VO RB 6.2K + 1/4 LR324 I1 + R4 3K R3 51K AC I2 RL 10K R4 51K VCC R5 51K 1mA AV=1+R2/R1 AV=11 (As shown) Figure 17. Fixed Current Sources R1 Figure 18. AC Coupled Non-Inverting Amplifier 1M C1 0.01uF 0.001uF R2 100K R1 16K 1/4 LR324 + C2 0.01uF VO + R3 100K R2 16K VIN 1/4 LR324 - R5 100K V0 VCC R4 100K Figure 19. Pulse Generator R3 100k 0 f0 R4 100k fo=1KHz Q=1 AV=2 Figure 20. DC Coupled Low-Pass RC Active Filter 8/10 LESHAN RADIO COMPANY, LTD. LR324 Mechanical Dimensions f e e f f e 0,1 f e f e Unit: mm f DIP-14 ¶hf f 0$; 5 f 0,1 9/10 LESHAN RADIO COMPANY, LTD. LR324 Mechanical Dimensions (Continued) SOP-14 Unit: mm $ f he e fe e f e f f f e e e f e $ PLQ 5 f 5 f fe e ¶ 'HSWK̚ 10/10