Data Sheet LOW POWER SINGLE OPERATIONAL AMPLIFIER AS321 General Description Features The AS321 is a high gain and internally frequency compensated operational amplifier 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. Typical applications include battery charger, active filters, general purpose controllers and most conventional operational amplifier circuits. · · · · · Excellent Phase Margin: 60 deg. Large Voltage Gain: 100dB (Typical) Low Input Bias Current: 20nA (Typical) Low Input Offset Voltage: 2mV (Typical) Low Supply Current: 0.35mA at VCC=5V · Wide Power Supply Voltage: Single Supply: 3V to 36V Dual Supplies: ± 1.5V to ± 18V Wide Input Common Mode Voltage Range: 0V to VCC-1.5V · The AS321 is compatible with industry standard 321. The AS321 is available in SOT-23-5 packages. Applications · · · Battery Charger Active Filters General Purpose Controllers, Instruments SOT-23-5 Figure 1. Package Type of AS321 May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 1 Data Sheet LOW POWER SINGLE OPERATIONAL AMPLIFIER AS321 Pin Configuration K Package (SOT-23-5) INPUT + 1 VEE 2 INPUT - 3 5 VCC 4 OUTPUT Figure 2. Pin Configuration of AS321 (Top View) Functional Block Diagram VCC 6µA 4µA 100µA Q5 Q6 Q2 INPUT- Q3 Cc Q7 Q4 Q1 Rsc OUTPUT INPUT+ Q11 Q10 Q8 Q9 Q13 Q12 50µA VEE Figure 3. Functional Block Diagram of AS321 May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 2 Data Sheet LOW POWER SINGLE OPERATIONAL AMPLIFIER AS321 Ordering Information - AS321 E1: Lead Free G1: Green Circuit Type TR: Tape and Reel Package K: SOT-23-5 Package Temperature Range SOT-23-5 -40 to 85oC Part Number Marking ID Lead Free Green Lead Free Green AS321KTR-E1 AS321KTR-G1 E6T G6T Packing Type Tape & Reel BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green packages. Absolute Maximum Ratings (Note 1) Parameter Symbol VS (VCC-VEE) Value Unit 40 V Differential Input Voltage VID 40 V Input Voltage VIN -0.3 to 40 V Thermal Resistance to Ambient Rθ JA 260 Operating Junction Temperature TJ 150 TSTG -65 to 150 TLEAD 260 Power Supply Voltage Storage Temperature Range Lead Temperature (Soldering, 10 Seconds) o C/W o C oC o C Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Supply Voltage Ambient Operating Temperature Range Symbol Min Max VCC 3 36 V TA -40 85 oC May. 2010 Rev. 1. 5 Unit BCD Semiconductor Manufacturing Limited 3 Data Sheet LOW POWER SINGLE OPERATIONAL AMPLIFIER AS321 Electrical Characteristics Limits in standard typeface are for TA=25oC, bold typeface applies over -40oC to 85oC (Note 2), VCC=5V, VEE=0V, VO=1.4V unless otherwise specified. Parameter Symbol VIO Input Offset Voltage Average Temperature Coefficient of Input Offset Voltage Input Bias Current Input Offset Current Input Common Mode Voltage Range (Note 4) Conditions Min VO=1.4V, RS=0Ω, VCC=5V to 30V (Note 3) IBIAS IIN+ or IIN-, VCM=0V IIO IIN+ - IIN-, VCM=0V 20 5 0 RL=∞, VCC=30V Common Ratio Power Ratio Mode Supply Rejection Rejection Source GV VCC=15V, VO=1V to 11V, RL≥2kΩ CMRR VCM=0V to (VCC-1.5)V, RS≤10kΩ PSRR VCC=5V to 30V, RS≤10kΩ Sink ISINK ISC VIN+=0V, VIN-=1V, VCC=15V, VO=2V 0.35 0.80 0.45 1.0 0.45 1.2 0.65 1.5 100 60 100 40 VCC=30V, RL=10kΩ VCC=5V, RL= 10kΩ May. 2010 Rev. 1. 5 V mA mA mA 15 mA 5 12 nA dB 20 10 nA dB 60 20 mV dB 70 µA 50 40 VOH VOL VCC-1.5 80 VCC=15V VCC=30V, RL=2kΩ Output Voltage Swing 30 60 VIN+=0V, VIN-=1V, VCC=15V, VO=0.2V Output Short Circuit Current to Ground 85 70 ISOURCE VIN+=1V, VIN-=0V, VCC=15V, VO=2V Output Current 100 100 VCC=30V, CMRR≥50dB Unit µV/oC 200 ICC Large Signal Voltage Gain 5 7 RL=∞, VCC=5V Supply Current Max 2 7 ∆VIO/∆T TA=-40 to 85oC VCM Typ 60 mA 26 26 27 V 28 27 5 20 30 mV BCD Semiconductor Manufacturing Limited 4 Data Sheet LOW POWER SINGLE OPERATIONAL AMPLIFIER AS321 Electrical Characteristics (Continued) Limits in standard typeface are for TA=25oC, bold typeface applies over -40oC to 85oC (Note 2), VCC=5V, VEE=0V, VO=1.4V unless otherwise specified. Parameter Symbol Total Harmonic Distortion THD Phase Margin φM Thermal Resistance (Junction to Case) θJC Conditions Min f=1kHZ, AV=20dB, RL=2kΩ, VO=2Vp-p, CL=100pF, VCC=30V SOT-23-5 Typ Max Unit 0.015 % 60 Deg o 101 C/W Note 2: Limits over the full temperature are guaranteed by design, but not tested in production. Note 3: Over the full input common-mode range 0V to VCC-1.5V(at 25oC). Note 4: The input common-mode voltage of either input signal voltage should not be allowed to go negatively by more than 0.3V (at 25oC). The upper end of the common-mode voltage range is VCC-1.5V (at 25oC), but either or both inputs can go to +36V without damages, independent of the magnitude of the VCC. Typical Performance Characteristics 20 15 18 Input Current (nA) Input Voltage (+VDC) 16 10 NEGATIVE POSITIVE 5 14 12 10 8 6 4 2 0 0 5 10 0 15 -25 0 25 50 75 100 125 o Power Supply Voltage (+VDC) Temperature ( C) Figure 4. Input Voltage Range Figure 5. Input Current May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 5 Data Sheet LOW POWER SINGLE OPERATIONAL AMPLIFIER AS321 Electrical Characteristics (Continued) 1.0 120 0.9 0.8 Voltage Gain (dB) Supply Current (mA) 105 0.7 0.6 0.5 0.4 0.3 RL=2KΩ RL=20KΩ 90 75 0.2 0.1 0.0 0 5 10 15 20 25 30 35 60 40 0 8 16 Supply Voltage (V) Figure 6. Supply Current 40 4 Output Voltage (V) VCC=30V, VEE=0V RL=2kΩ, CL=100pF 60 40 3 2 1 0 20 Input Voltage (V) Open Loop Gain (dB) 32 Figure 7. Voltage Gain 80 0 -20 24 Power Supply Voltage (V) 0.2k 1k 10k 100k 1M 2M 3 2 1 0 0 Frequency (Hz) 4 8 12 16 20 24 28 32 36 40 Time (µs) Figure 8. Open Loop Gain vs.Frequency Figure 9. Voltage Follower Pulse Response May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 6 Data Sheet LOW POWER SINGLE OPERATIONAL AMPLIFIER AS321 Typical Performance Characteristics (Continued) 20 800 15 600 Output Swing (V) Output Voltage (mV) 700 500 400 300 10 5 200 100 0 4 8 16 12 0 1k 20 10k 1M Frequency (Hz) Time (µs) Figure 10. Voltage Follower Pulse Response (Small Signal) Figure 11. Large Signal Frequency Response 10 8 7 6 Output Voltage (V) Output Voltage Referenced to Vcc (V) 100k 5 4 3 1 VCC=5V VCC=15V 0.1 2 1 0 0.1 1 10 0.01 1E-3 100 0.01 0.1 1 10 100 Output Sink Current (mA) Output Source Current (mA) Figure 12. Output Characteristics: Current Sourcing Figure 13. Output Characteristics: Current Sinking May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 7 Data Sheet LOW POWER SINGLE OPERATIONAL AMPLIFIER AS321 Typical Performance Characteristics (Continued) 100 90 Output Current (mA) 80 70 60 50 40 30 20 10 0 -25 0 25 50 75 100 125 o Temperature ( C) Figure 14. Current Limiting Typical Application R1 910K R1 100k +V1 R2 100K - VCC +V2 AS321 R3 91K VO + VIN(+) + R2 100k R3 100k +V4 Figure 16. Power Amplifier AS321 VO R6 100k +V3 RL R5 100k R4 100k Figure 17. DC Summing Amplifier May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 8 Data Sheet LOW POWER SINGLE OPERATIONAL AMPLIFIER AS321 Typical Application (Continued) VCC R2 1M R1 100k C1 0.1µF - CO VO AS321 RB 6.2k + CIN R3 1M AC + 2V - RL 10k R2 AS321 R4 100k R5 100k R1 2K - VCC C2 10µF + 2V - R3 2K I1 + R4 3K AV=1+R2/R1 I2 1mA AV=11 (As shown) Figure 18. AC Coupled Non-Inverting Amplifier R1 Figure 19. Fixed Current Sources 1M C1 0.01µF 0.001µF R2 100K R1 16K - AS321 + C2 0.01µF VO AS321 - + R3 100K R2 16K VIN VO R3 100k V0 R5 100K VCC 0 R4 100 K Figure 20. Pulse Generator f0 fo=1KHz Q=1 AV=2 R4 100k Figure 21. DC Coupled Low-Pass Active Filter May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 9 Data Sheet LOW POWER SINGLE OPERATIONAL AMPLIFIER AS321 Mechanical Dimensions SOT-23-5 Unit: mm(inch) 0.300(0.012) 0.600(0.024) 1.500(0.059) 1.700(0.067) 0.100(0.004) 0.200(0.008) 2.950(0.116) 2.650(0.104) 2.820(0.111) 3.020(0.119) 0.200(0.008) 0.700(0.028) REF 0.300(0.012) 0.400(0.016) 0° 8° 1.800(0.071) 2.000(0.079) 0.000(0.000) MAX 1.450(0.057) 0.950(0.037) TYP 0.150(0.006) 0.900(0.035) 1.300(0.051) May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 10 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein. 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