AP358

AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Features • • • • • • • • • • • • Internally frequency compensated for unity gain Large dc voltage gain: 100 dB Very low supply current drain (500µA)-essentially independent of supply voltage Wide bandwidth (unity gain): 1 MHz (temperature compensated) Input common-mode voltage range includes ground Differential input voltage range equal to the power supply voltage Low input offset voltage: 2mV Wide power supply range: Single supply: 3V to 32V Or dual supplies: ±1.5V to ±16V + Large output voltage swing: 0V to V - 1.5V 8-pin SOP, PDIP package Lead Free Finish/RoHS Compliant for Lead Free and “Green” products (Note 1) SOP-8L: Available in “Green” Molding Compound (No Br, Sb) General Description The AP358 series consists of two independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to 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. Application areas include transducer amplifiers, dc gain blocks and all the conventional op amp circuits which now can be more easily implemented in single power supply systems. For example, the AP358 series can be directly operated off of the standard +5V power supply voltage which is used in digital systems and will easily provide the required interface electronics without requiring the additional ±15V power supply. Advantages Pin Descriptions Pin Name Pin# 1 2 3 4 5 6 7 8 Description Channel 1 Output Channel 1 Inverting Input Channel 1 Non-inverting Input Ground Channel 2 Non-inverting Input Channel 2 Inverting Input Channel 2 Output Chip Supply Voltage • • • • • Eliminate the need for dual supplies Compatible with all forms of logic Two internally compensated op amps Low power drain suitable for battery operation Allows direct sensing near GND and VOUT also goes to GND OUTPUT 1 INVERTING INPUT 1 NON-INVERTING INPUT 1 GND NON-INVERTING INPUT 2 INVERTING INPUT 2 OUTPUT 2 + V Ordering Information AP358 X X X Package S : SOP -8L N : PDIP-8L Notes: Lead-Free L : Lead Free G: Green (Note 2) Packing - U : Tube -13 : Taping 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. 2. Green is for SOP-8L. Device (Note 3) Lead-free Package Packaging Quantity Code S N SOP-8L PDIP-8L 100 60 Tube Part Number Suffix -U -U 13” Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel NA -13 NA AP358S AP358N Note: 3. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AP358 Rev. 4 1 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Unique Characteristics • • • In the linear mode the input common-mode voltage range includes ground and the output voltage can also swing to ground, even though operated from only a single power supply voltage. The unity gain cross frequency is temperature compensated. The input bias current is also temperature compensate Pin Assignment (Top View) OUTPUT 1 1 INVERTING INPUT 1 2 NON-INVERTING INPUT 1 3 GND 4 SOP-8L (Top View) OUTPUT 1 1 INVERTING INPUT 1 2 NON-INVERTING INPUT 1 3 GND 4 PDIP-8L 8 7 6 5 V+ OUTPUT 2 INVERTING INPUT 2 NON-INVERTING INPUT 2 8 7 6 5 V+ OUTPUT 2 INVERTING INPUT 2 NON-INVERTING INPUT 2 AP358 AP358 Block Diagram OUTPUT 1 1 8 V+ INVERTING INPUT 1 2 A B ++ - 7 OUTPUT 2 NON-INVERTING INPUT 1 3 - 6 INVERTING INPUT 2 GND 4 5 NON-INVERTING INPUT 2 AP358 Rev. 4 2 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Voltage Controlled Oscillator ( VCO ) R 100K +VC* 51K 0.05µF 1/2 AP358 + V+/2 51K 1/2 AP358 + 100K OUTPUT2 10K OUTPUT1 R/2 51K 51K Absolute Maximum Ratings Symbol VCC VIN PD Parameter Supply voltage Differential Input Voltage Input Voltage Power Dissipation (Note 4) Rating 32 32 -0.3 to +32 600 Unit V V V mW + o Output Short-Circuit to GND V < 15V and TA=25 C Input Current (VIN < -0.3V) (One Amplifier) (Note 5) Continuous 40 0 to +70 -65 to +150 mA o o (Note 6) TOP TST Note: 4. Operating Temperature Range Storage Temperature Range C C For operating at high temperatures, the AP358 must be derated based on a +125°C maximum junction temperature and a thermal resistance of 120°C/W for DIP and 189°C/W for Small Outline package, which applies for the device soldered in a printed circuit board, operating in a still air ambient. The dissipation is the total of both amplifiers—use external resistors, where possible, to allow the amplifier to saturate or to reduce the power which is dissipated in the integrated circuit. Note: 5. Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output current is approximately 40mA independent of the magnitude of V+. At values of supply voltage in excess of +15V, continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction. Destructive dissipation can result from simultaneous shorts on all amplifiers. 6. This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the op amps to go to the V+ voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than -0.3V (at 25°C). Note: AP358 Rev. 4 3 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Electrical Characteristics ( TA = 25oC, V+ = +5.0V, unless otherwise stated ) Symbol VIO IB IIO VICM IS AV CMRR PSRR Conditions TA = 25oC, (Note 8) IIN(+) or IIN(−), TA = 25°C, Input Bias Current VCM = 0V, (Note 9) IIN(+) - IIN(−),VCM = 0V, Input Offset Current TA = 25°C V+ = 30V, (Note 10) Input Common-Mode Voltage Range TA = 25°C RL = ∞ on V+ = 30V Supply Current All Op Over Full Temperature Range V+ = 5V Amps V+ = 15V, TA = 25°C, RL > 2kΩ, Large Signal Voltage Gain (For VO = 1V to 11V) TA = 25°C, VCM = 0V to Common-Mode Rejection Ratio V+ -1.5V V+ = 5V to 30V, Power Supply Rejection Ratio TA = 25°C f = 1KHz to 20 KHz, TA = 25°C Amplifier-to-Amplifier Coupling (Input Referred), (Note 11) Note: Note: Note: Note: 7. 8. 9. The AP358 temperature specifications are limited to 0°C < TA < +70°C. (Note 7) Parameter Input Offset Voltage Min. 0 25 65 65 - Typ. 2 45 5 1 0.5 100 85 100 -120 Max. 7 250 50 V+ -1.5 2 1.2 - Unit mV nA nA V mA V/mV dB dB dB VO ≅ 1.4V, RS = 0Ω with V+ from 5V to 30V; and over the full input common-mode range (0V to V+ -1.5V) at 25°C. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so no loading change exists on the input lines. 10. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V (at 25°C). The upper end of the common-mode voltage range is V+ -1.5V (at 25°C), but either or both inputs can go to +32V without damage, independent of the magnitude of V+. 11. Due to 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 frequencies. Note: AP358 Rev. 4 4 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Electrical Characteristics ( Continued ) ( V+ = +5.0V, unless otherwise stated ) Symbol Parameter Conditions VIN- = 1V, VIN+ = 0V, V+ = 15V, VO = 2V, TA = 25°C VIN- = 1V, VIN+ = 0V, V+ = 15V, VO = 200mV, TA = 25°C VIN+ = 1V, VIN- = 0V, V+ = 15V, VO = 2V, TA = 25°C TA = 25°C, (Note 5) V+ = 15V RL = 2kΩ, TA = 25oC RL = 10kΩ, TA = 25oC RL = 10kΩ, TA = 25oC Min. 10 20 20 26 27 Typ. 20 70 40 40 28 5 (Note 5) Max. 60 20 Unit mA µA mA mA V V mV ISINK Output Current ISOURCE ISC VOH VOL Note: Sink Source Short Circuit to Ground Output Voltage Swing (V+=30V) (V+=5V) 5. Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output current is approximately 40mA independent of the magnitude of V+. At values of supply voltage in excess of +15V, continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction. Destructive dissipation can result from simultaneous shorts on all amplifiers. AP358 Rev. 4 5 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit ( Continued ) ( V+ = 5.0 VDC ) Non-Inverting DC Gain ( 0V Output ) +VIN * + 1/2 AP358 R2 1M +VO +5V VO (Volts) GAIN=1+ R2 R1 R1 10K *R not needed due to temperature independent IIN =101(as shown) VIN (mV) R 100K +V1 +V2 + R 100K R 100K R 100K R1 910K R2 100K V+ 1/2 AP358 - VO R3 91K 1/2 AP358 +V3 +V4 R 100K R 100K +VIN + VO RL Where: VO=V1+V2-V3-V4 (V1+V2) > (V3+V4) to keep V > 0 VDC O VO=0 VDC for VIN = 0 VDC AV =10 DC Summing Amplifier (VIN'S > 0 VDC and VO > 0 VDC) R2 100K VIN R3 100K C1 330pF R1 100K Power Amplifier C2 330pF R7 470K 1/2 AP358 + R4 10M - 1/2 AP358 R5 470K + VO R8 100K - 1/2 AP358 fO = 1KHz Q = 50 + R6 100K C3 10µF + V+ "BI-QUAD" RC Active Bandpass Filter AP358 Rev. 4 6 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit ( Continued ) ( V+ = 5.0 VDC ) V+ + 2V R3 - 2K VL R2 100 R1* 0.1 IL + 2V - R1 2K R4 2K + RL - 1/2 AP358 - 1/2 AP358 + R2 3K I1 1mA I1 = I2 R3 1K I2 VO VO = 1V(IL) 0.1A *(Increase R1 for I small) L VL < V+ -2V Fixed Current Sources Current Monitor V+ 1/2 AP358 20mA 82 1/2 AP358 30mA 100 β > 20 600mA + LED Driver 1/2 AP358 + Lamp Driver RL 240 + 1/2 AP358 +VIN VO + Driving TTL R1 1M R2 100K 0.001µF IN914 IN914 VO = VIN Voltage Follower R1 100K C 0.001µF 1/2 AP358 VO + 0 V+ R3 100K R2 100K VO + 0 1/2 AP358 + R4 100K R3 100K V+ R4 100K + R5 100K Pulse Generator Squarewave Oscillator AP358 Rev. 4 7 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit ( Continued ) ( V+ = 5.0 VDC ) IB 1/2 AP358 +VIN ZIN (POLYCARBONATE OR POLYETHYLENE) HIGH ZIN LOW ZOUT 2IB C 1µF 2N929* *hi β AT 100 nA IB 1/2 AP358 + 2IB 0.001µF IB 3R 3M ZOUT VO + + 1/2 AP358 AUX AMP INPUT CURRENT COMPENSATION R IM IB Low Drift Peak Detector R1 30K IN914 +VIN + IO R2 0.01µF 150K R3 100K V+ R4 100K 1/2 AP358 VO + 0 1/ 2 AP358 + R5 100K - IO =0.1 amp / volt VIN (increase RE for IO small) RL 10 Pulse Generator 0.05µF R 100K High Compliance Current Sink +VC* 51K R/2 50K 1/2 AP358 + V+/2 51K 51K 1/2 AP358 + 100K OUTPUT2 10K OUTPUT1 *WIDE CONTROL VOLTAGE RANGE: 0 VDC < VC < 2 (V+ -1.5VDC) Voltage Controlled Oscillator (VCO) AP358 Rev. 4 8 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit ( Continued ) ( V+ = 5.0 VDC ) Rf 10K +VIN R1 10K +VREF - R1 CIN 10K 1/2 AP358 + R2 10M VO VIN + CO 0 VO RL 10K 3 Vpp 1/2 AP358 R2 100K V+ C1 10µF + + R3 100K RB 6.2K AV= Rf R1 (As shown, AV=10) Comparator with Hysteresis R1 1M R2 1M R R3 1M R1 100K AC Coupled Inverting Amplifier R2 1M + 1/2 AP358 R4 1M VIN VR +VCM + VO C1 0.1µF CIN + R3 1M + C2 10µF CO 1/2 AP358 + R4 100K R5 100K V+ RB 6.2K 0 VO RL 10K 3 Vpp V O=VR AV=11(As Shown) R2 AV=1+ R1 Ground Referencing a Differential Input Signal AC Coupled Non-Inverting Amplifier R2 100K R1 100K C1 0.01µF R1 16K R2 16K C2 0.01µF R4 100K R3 100K VIN + 1/2 AP358 R3 100K V O R4 100K VO 1/2 AP358 +V1 +V2 1/2 AP358 + VO + fO = 1KHz Q=1 AV=2 0 fO R4 (CMRR depends on this R3 resistor ratio match) R4 V O = (1+ )(V2-V1) R3 As Shown: VO = 2(V2-V1) For R2 = R1 DC Coupled Low-Pass RC Active Filter High Input Z, DC Differential Amplifier AP358 Rev. 4 9 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit ( Continued ) ( V+ = 5.0 VDC ) C1 0.01µF R1 390K C2 0.01µF R3 680 R2 620K + C3 10µF f O = 1.12KHz Q = 25 R4 390K R6 120K R5 39K V IN 1/2 AP358 + R7 100K V+ R8 100K 1/2 AP358 + VO Bandpass Active Filter R2 100K 1/2 AP358 +V1 R1 2K R3 R4 100K 100K +VIN IIN IB IB 1/2 AP358 + +VO + GAIN ADJUST R5 100K 1/2 AP358 + VO 2N929* *hi β AT 50 nA IB 0.001µF IB 2R 3M - 1/2 AP358 + AUX AMP INPUT CURRENT COMPENSATION 1/2 AP358 +V2 + R6 100K R7 100K If R1 = R5 & R3 = R4 = R6 = R7 (CMRR depends on match) 2R2 V O =( 1+ )(V2-V1) R1 As Shown: VO = 101(V2-V1) R 1.5M IB High Input Z Adjustable-Gain DC Instrumentation Amplifier Using Symmetrical Amplifiers to Reduce Input Current (General Concept) AP358 Rev. 4 10 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Characteristics ( TA = 25oC ) Supply Current Vo - Output Voltage (Vp-p) 1.4 14 12 10 8 6 4 2 0 Large Signal Frequency Response 100K 1K +15 VDC V O 2K Supply Current Drain (mA) 1.2 1 0.8 0.6 0.4 0.2 0 5V 10V 15V 20V 25V 30V 35V mA V+ ID +7VDC + Supply Voltage (V) Open Loop Frequency Response 120 + 10M 0.1µF VIN V+ 1k 10k 25K 50K 75K 100K 500K 1M Input Frequency (Hz) Current Limit 60 Iout - Current Drain(mA) Voltage Gain (dB) 100 80 60 40 20 0 V+=30V 50 40 30 20 10 0 + IO VO V+=15V V+/2 10 0K 30 0K 50 0K + + -40 0 10 K 10 0 1M 1 10 1K 25 Temperature ( C) 41 60 o 80 100 125 Input Frequency (Hz) Voltage Follower Pulse Response Voltage Follower Pulse Response (Small Signal) TA=25oC RL > 2.0K V+ = 15VDC ein eO 50pF TA = +25oC V+ = +30VDC + AP358 Rev. 4 11 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Application Information The AP358 series are op amps which operate with only a single power supply voltage, have true-differential inputs, and remain in the linear mode with an input common-mode voltage of 0 VDC. These amplifiers operate over a wide range of power supply voltage with little change in performance characteristics. At 25°C amplifier operation is possible down to a minimum supply voltage of 2.3 VDC. Precautions should be taken to insure that the power supply for the integrated circuit never becomes reversed in polarity or that the unit is not inadvertently installed backwards in a test socket as an unlimited current surge through the resulting forward diode within the IC could cause fusing of the internal conductors and result in a destroyed unit. Large differential input voltages can be easily accommodated and, as input differential voltage protection diodes are not needed, no large input currents result from large differential input voltages. The differential input voltage may be + larger than V without damaging the device. Protection should be provided to prevent the input voltages from going negative more than -0.3 VDC (at 25°C). An input clamp diode with a resistor to the IC input terminal can be used. To reduce the power supply current drain, the amplifiers have a class A output stage for small signal levels which converts to class B in a large signal mode. This allows the amplifiers to both source and sink large output currents. Therefore both NPN and PNP external current boost transistors can be used to extend the power capability of the basic amplifiers. The output voltage needs to raise approximately 1 diode drop above ground to bias the on-chip vertical PNP transistor for output current sinking applications. For ac applications, where the load is capacitively coupled to the output of the amplifier, a resistor should be used, from the output of the amplifier to ground to increase the class A bias current and prevent crossover distortion. Where the load is directly coupled, as in dc applications, there is no crossover distortion. Capacitive loads which are applied directly to the output of the amplifier reduce the loop stability margin. Values of 50pF can be accommodated using the worst-case non-inverting unity gain connection. Large closed loop gains or resistive isolation should be used if larger load capacitance must be driven by the amplifier. The bias network of the AP358 establishes a drain current which is independent of the magnitude of the power supply voltage over the range of 3 VDC to 30 VDC. Output short circuits either to ground or to the positive power supply should be of short time duration. Units can be destroyed, not as a result of the short circuit current causing metal fusing, but rather due to the large increase in IC chip dissipation which will cause eventual failure due to excessive function temperatures. Putting direct short-circuits on more than one amplifier at a time will increase the total IC power dissipation to destructive levels, if not properly protected with external dissipation limiting resistors in series with the output leads of the amplifiers. The larger value of output source current which is available at 25°C provides a larger output current capability at elevated temperatures (see typical performance characteristics) than a standard IC op amp. The circuits presented in the section on typical applications emphasize operation on only a single power supply voltage. If complementary power supplies are available, all of the standard op amp circuits can be used. In general, introducing a + pseudo-ground (a bias voltage reference of V /2) will allow operation above and below this value in single power supply systems. Many application circuits are shown which take advantage of the wide input common-mode voltage range which includes ground. In most cases, input biasing is not required and input voltages which range to ground can easily be accommodated. AP358 Rev. 4 12 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Marking Information (1) SOP-8L (Top view) Part Number AP358 YY W W X X Logo Internal Code L : Lead-Free G : Green (Note 12) WW: Xth week :01~52 YY: Year : " 01 " = 2001 02 " = 2002 ~ Note: 12. Green is for SOP-8L. (2) PDIP-8L ( Top view ) Part Number AP358 YY W W X Logo Internal Code WW: Xth week :01~52 YY: Year : " 01 " = 2001 02 " = 2002 ~ Marking Code Table Device AP358S AP358N Package SOP-8L PDIP-8L Marking Code AP358 AP358 Date Code YYWW YYWW AP358 Rev. 4 13 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Package Information ( All Dimensions in mm ) (1) SOP- 8L 3.70/4.10 5.79/6.20 0.08/0.25 0.254 0.38/1.27 Gauge Plane Seating Plane Detail "A" 7°~9° 1.30/1.50 1.75max. 0.20typ 7°~9° 0.35max. 45° Detail "A" 3.70/4.10 1.27typ 4.80/5.30 0.3/0.5 (2) PDIP- 8L AP358 Rev. 4 14 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP358 Rev. 4 15 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated