AS321 LOW POWER SINGLE OPERATIONAL AMPLIFIER Description Pin Assignments 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. (Top View) INPUT + 1 VEE 2 INPUT - 3 5 VCC 4 OUTPUT The AS321 is compatible with industry standard 321. The AS321 is available in SOT25 package. SOT25 Features Excellent Phase Margin: 60 deg. Large Voltage Gain: 100dB (Typical) Low Input Bias Current: 20nA (Typical) Battery Charger Low Input Offset Voltage: 2mV (Typical) Active Filters Low Supply Current: 0.35mA at VCC = 5V General Purpose Controllers, Instruments 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 Lead-Free Packages: SOT25 Applications Totally Lead-Free; RoHS Compliant (Notes 1 & 2) Lead-Free Packages, Available in "Green" Molding Compound: SOT25 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. "Green" Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated's definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green" products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. Typical Applications Circuit Power Amplifier AS321 Document number: DS36976 Rev. 3 - 2 DC Summing Amplifier 1 of 10 www.diodes.com March 2018 (c) Diodes Incorporated AS321 Typical Applications Circuit (Cont.) AC Coupled Non-Inverting Amplifier Fixed Current Sources Pulse Generator AS321 Document number: DS36976 Rev. 3 - 2 DC Coupled Low-Pass Active Filter 2 of 10 www.diodes.com March 2018 (c) Diodes Incorporated AS321 Functional Block Diagram Absolute Maximum Ratings (Note 4) Symbol Rating Unit Power Supply Voltage 40 V VID Differential Input Voltage 40 V VIN Input Voltage -0.3 to 40 V JA Thermal Resistance to Ambient 260 C/W TJ Operating Junction Temperature +150 C -65 to +150 C +260 C VS (VCC-VEE) Parameter TSTG Storage Temperature Range TLEAD Lead Temperature (Soldering, 10 Seconds) Note 4: 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 Symbol VCC TA AS321 Document number: DS36976 Rev. 3 - 2 Parameter Supply Voltage Ambient Operating Temperature Range 3 of 10 www.diodes.com Min Max Unit 3 36 V -40 +85 C March 2018 (c) Diodes Incorporated AS321 Electrical Characteristics (Limits in standard typeface are for TA = +25C, bold typeface applies over -40C to +85C (Note 5), VCC = 5V, VEE = 0V, VO = 1.4V, unless otherwise specified.) Symbol VIO Parameter Min Typ Max VO = 1.4V, RS = 0, VCC = 5V to 30V -- 2 5 (Note 6) -- -- 7 Average Temperature Coefficient of Input Offset Voltage TA = -40C to +85C -- 7 -- IIN+ or IIN-, VCM = 0V -- 20 100 Input Bias Current -- -- 200 Input Offset Current IIN+ - IIN-, VCM = 0V Input Common Mode Voltage Range (Note 7) VCC = 30V, CMRR 50dB Input Offset Voltage VIO/T IBIAS IIO VCM Conditions 5 30 100 0 -- VCC-1.5 -- 0.35 0.80 -- 0.45 1.0 -- 0.45 1.2 -- 0.65 1.5 85 100 -- 80 -- -- 60 70 -- 60 -- -- 70 100 -- 60 -- -- VIN+ = 1V, VIN- = 0V, VCC = 15V, VO = 20 40 -- 2V 20 -- -- VIN+ = 0V, VIN- = 1V, VCC = 15V, VO = 10 15 -- 2V 5 -- -- 12 50 -- A -- 40 60 mA 26 -- -- 26 -- -- 27 28 -- 27 -- -- -- 5 20 -- -- 30 Large Signal Voltage Gain VCC = 15V, VO = 1V to 11V, RL 2k CMRR Common Mode Rejection Ratio VCM = 0V to (VCC-1.5)V, RS 10k PSRR Power Supply Rejection Ratio VCC = 5V to 30V, RS 10k Source Output Current ISINK Sink VIN+ = 0V, VIN- = 1V, VCC = 15V, VO = 0.2V ISC Output Short Circuit Current to Ground VCC = 15V VCC = 30V, RL = 2k VOH Output Voltage Swing VCC = 30V, RL = 10k VCC = 5V, RL = 10k VOL nA -- RL = , VCC = 30V ISOURCE V/C -- Supply Current GV mV -- RL = , VCC = 5V ICC Unit nA V mA dB dB dB mA mA V mV Total Harmonic Distortion f = 1kHz, AV = 20dB, RL = 2k, VO = 2Vp-p, CL = 100pF, VCC = 30V -- 0.015 -- % M Phase Margin -- -- 60 -- Deg JC Thermal Resistance (Junction to Case) SOT25 -- 101 -- C/W THD Notes: 5. Limits over the full temperature are guaranteed by design, but not tested in production. 6. Over the full input common-mode range 0V to VCC-1.5V (at +25C). 7. The input common-mode voltage of either input signal voltage should not be allowed to go negatively by more than 0.3V (at +25C). The upper end of the common-mode voltage range is VCC-1.5V (at +25C), but either or both inputs can go to +36V without damages, independent of the magnitude of the VCC. AS321 Document number: DS36976 Rev. 3 - 2 4 of 10 www.diodes.com March 2018 (c) Diodes Incorporated AS321 Performance Characteristics Input Voltage Range Input Current 20 15 18 Input Current (nA) Input Voltage (+VDC) 16 10 NEGATIVE POSITIVE 5 14 12 10 8 6 4 2 0 0 0 5 10 -25 15 0 25 50 75 100 125 o Power Supply Voltage (+VDC) Temperature ( C) Supply Current Voltage Gain 120 1.0 0.9 0.8 Voltage Gain (dB) Supply Current (mA) 105 0.7 0.6 0.5 0.4 0.3 RL=2K RL=20K 90 75 0.2 0.1 60 0.0 0 5 10 15 20 25 30 35 0 40 8 Supply Voltage (V) Input Voltage (V) Open Loop Gain (dB) Output Voltage (V) VCC=30V, VEE=0V RL=2k, CL=100pF 40 20 0 0.2k 1k 10k 100k 1M 2M Frequency (Hz) AS321 Document number: DS36976 Rev. 3 - 2 32 40 Voltage Follower Pulse Response 80 -20 24 Power Supply Voltage (V) Open Loop Gain vs. Frequency 60 16 4 3 2 1 0 3 2 1 0 0 4 8 12 16 20 24 28 32 36 40 Time (s) 5 of 10 www.diodes.com March 2018 (c) Diodes Incorporated AS321 Performance Characteristics (Cont.) Voltage Follower Pulse Response (Small Signal) Large Signal Frequency Response 20 800 700 15 Output Swing (V) Output Voltage (mV) 600 500 400 300 10 5 200 100 0 4 12 8 16 0 1k 20 10k Time (s) Output Characteristics: Current Sourcing 1M Output Characteristics: Current Sinking 10 8 7 6 Output Voltage (V) Output Voltage Referenced to Vcc (V) 100k Frequency (Hz) 5 4 3 1 VCC=5V VCC=15V 0.1 2 1 0 0.1 1 10 100 0.01 1E-3 0.01 0.1 1 10 100 Output Sink Current (mA) Output Source Current (mA) Current Limiting 100 90 Output Current (mA) 80 70 60 50 40 30 20 10 0 -25 0 25 50 75 100 125 o Temperature ( C) AS321 Document number: DS36976 Rev. 3 - 2 6 of 10 www.diodes.com March 2018 (c) Diodes Incorporated AS321 Ordering Information AS321 X X - X Product Name Pb Packing E1/G1 K : SOT25 TR : Tape & Reel E1 : RoHS Compliant G1 : RoHS Compliant and Green Package (Note 9) RoHS Compliant Lead Free/ Green Temperature Range Marking ID Tape and Reel Quantity Status (Note 8) Alternative AS321KTR-E1 SOT25 Lead Free -40 to +85C E6T 3000 NRND AS321KTR-G1 AS321KTR-G1 SOT25 Green -40 to +85C G6T 3000 In Production -- Part Number Lead-Free Package Notes: 8. AS321KTR-E1 (Lead Free package) is Not Recommended for New Design (NRND), recommended alternative is AS321KTR-G1 (Green package). 9. For packaging details, go to our website at: https://www.diodes.com/design/support/packaging/diodes-packaging/. Marking Information (1) SOT25 (Top View) XXX AS321 Document number: DS36976 Rev. 3 - 2 : Logo XXX : Marking ID (See Ordering Information) 7 of 10 www.diodes.com March 2018 (c) Diodes Incorporated AS321 Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: SOT25 0.300(0.012) 0.600(0.024) 0.100(0.004) 0.200(0.008) 1.500(0.059) 1.700(0.067) 3.000(0.118) 2.650(0.104) 2.820(0.111) 3.100(0.122) 0.200(0.008) 0.700(0.028) REF 0.300(0.012) 0.500(0.020) 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) AS321 Document number: DS36976 Rev. 3 - 2 8 of 10 www.diodes.com March 2018 (c) Diodes Incorporated AS321 Suggested Pad Layout (1) Package Type: SOT25 E2 G Z E1 Y X Dimensions Z (mm)/(inch) G (mm)/(inch) X (mm)/(inch) Y (mm)/(inch) E1 (mm)/(inch) E2 (mm)/(inch) Value 3.600/0.142 1.600/0.063 0.700/0.028 1.000/0.039 0.950/0.037 1.900/0.075 AS321 Document number: DS36976 Rev. 3 - 2 9 of 10 www.diodes.com March 2018 (c) Diodes Incorporated AS321 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright (c) 2018, Diodes Incorporated www.diodes.com AS321 Document number: DS36976 Rev. 3 - 2 10 of 10 www.diodes.com March 2018 (c) Diodes Incorporated