AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS General Description Features • • • • • • • • • • • • 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. 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) 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. Pin Descriptions Advantages • • • • • 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 Pin Name Pin# OUTPUT 1 INVERTING INPUT 1 NON-INVERTING INPUT 1 GND 1 Channel 1 Output 2 Channel 1 Inverting Input NON-INVERTING INPUT 2 INVERTING INPUT 2 OUTPUT 2 + V 3 4 Description Channel 1 Non-inverting Input Ground 5 Channel 2 Non-inverting Input 6 Channel 2 Inverting Input 7 8 Channel 2 Output Chip Supply Voltage Ordering Information AP358 X X X Notes: Note: 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 S : SOP-8L N : PDIP-8L AP358S AP358N Package Packaging Quantity Code S N SOP-8L PDIP-8L Tube Part Number Suffix 100 60 -U -U 13” Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel NA -13 NA 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 AP358 GND 4 V+ 8 7 6 OUTPUT 2 INVERTING INPUT 2 5 NON-INVERTING INPUT 2 SOP-8L (Top View) OUTPUT 1 1 INVERTING INPUT 1 2 NON-INVERTING INPUT 1 3 AP358 GND 4 V+ 8 7 6 OUTPUT 2 INVERTING INPUT 2 5 NON-INVERTING INPUT 2 PDIP-8L Block Diagram OUTPUT 1 INVERTING INPUT 1 1 8 V+ 2 7 OUTPUT 2 A NON-INVERTING INPUT 1 GND AP358 Rev. 4 3 - B + + - 6 5 4 2 of 15 www.diodes.com INVERTING INPUT 2 NON-INVERTING INPUT 2 OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Voltage Controlled Oscillator ( VCO ) R 100K 0.05µF - +VC* - 1/2 AP358 51K + R/2 51K OUTPUT1 1/2 AP358 V+/2 51K + 51K 100K OUTPUT2 10K Absolute Maximum Ratings Symbol VCC VIN PD Parameter Supply voltage Differential Input Voltage Input Voltage Power Dissipation (Note 4) Unit V V V 600 mW + o Output Short-Circuit to GND V < 15V and TA=25 C Input Current (VIN < -0.3V) (One Amplifier) (Note 5) Continuous Operating Temperature Range Storage Temperature Range 0 to +70 -65 to +150 (Note 6) TOP TST Rating 32 32 -0.3 to +32 40 mA Note: 4. 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. Note: 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). o C C o 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. 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 Parameter Input Offset Voltage 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 7) Min. - Typ. 2 Max. 7 Unit mV - 45 250 nA - 5 50 nA 0 - V+ -1.5 V - 1 2 - 0.5 1.2 25 100 - V/mV 65 85 - dB 65 100 - dB - -120 - dB mA (Note 11) Note: 7. The AP358 temperature specifications are limited to 0°C < TA < +70°C. Note: 8. 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. Note: 9. 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. Note: 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+. Note: 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. 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 ISINK Sink Output Current ISOURCE ISC VOH VOL Note: Source Short Circuit to Ground Output Voltage Swing (V+=30V) (V+=5V) 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 (Note 5) Min. Typ. Max. Unit 10 20 - mA 20 70 - µA 20 40 - mA - 40 60 mA 26 27 - 28 5 20 V V mV 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 +5V + +VO - VO (Volts) 1/2 AP358 R2 1M R1 10K GAIN=1+ VIN (mV) R 100K R1 910K + R 100K R 100K R 100K +V3 +V4 1/2 AP358 R2 100K VO +VIN R 100K R 100K VO + RL Power Amplifier DC Summing Amplifier (VIN'S > 0 VDC and VO > 0 VDC) R1 100K - C2 330pF R7 470K 1/2 AP358 + VIN 1/2 AP358 R3 91K VO=0 VDC for VIN = 0 VDC AV =10 Where: VO=V1+V2-V3-V4 (V1+V2) > (V3+V4) to keep VO > 0 VDC R2 100K V+ - - - R4 10M R3 100K 1/2 AP358 C1 330pF R5 470K + - VO R8 100K 1/2 AP358 fO = 1KHz Q = 50 R1 =101(as shown) *R not needed due to temperature independent IIN +V1 +V2 R2 + 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+ R1* 0.1 + 2V R3 - 2K R1 2K + 2V - R4 2K IL VL R2 100 - RL + 1/2 AP358 - 1/2 AP358 I2 I1 + R2 3K 1mA VO R3 1K I1 = I2 1V(IL) VO = 0.1A *(Increase R1 for IL small) VL < V+ -2V Current Monitor Fixed Current Sources V+ - 20mA 1/2 AP358 - 82 30mA 1/2 AP358 + β > 20 600mA 100 + LED Driver Lamp Driver - 1/2 AP358 RL 240 + +VIN Driving TTL 0.001µF R1 1M IN914 R2 100K IN914 V+ + VO = VIN Voltage Follower R1 100K C 0.001µF - - VO 1/2 AP358 VO 1/2 AP358 R3 100K VO 1/2 AP358 + R5 100K R2 100K + 0 V+ + R4 100K + 0 R3 100K R4 100K Squarewave Oscillator Pulse Generator 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 C 1µF + ZOUT 2IB 2N929* ZIN VO 1/2 AP358 IB 0.001µF *hi β AT 100 nA IB (POLYCARBONATE OR POLYETHYLENE) 2IB HIGH ZIN LOW ZOUT + 3R 3M 1/2 AP358 - R IM AUX AMP INPUT CURRENT COMPENSATION IB Low Drift Peak Detector R1 30K IN914 R2 0.01µF 150K R3 100K V+ 1/2 AP358 - VO 1/ 2 AP358 + IO + +VIN + 0 R5 100K IO =0.1 amp / volt VIN (increase RE for IO small) R4 100K RL 10 High Compliance Current Sink Pulse Generator 0.05µF R 100K +VC* 51K - 1/2 AP358 + R/2 50K 1/2 AP358 V+/2 51K 51K OUTPUT1 + 100K OUTPUT2 10K *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 R1 CIN 10K - +VIN R1 10K +VREF VO 1/2 AP358 + VIN - + CO 1/2 AP358 R2 10M C1 10µF R1 100K R1 1M + VR - R +VCM R3 1M + 1/2 AP358 - R4 1M + Ground Referencing a Differential Input Signal C2 0.01µF fO = 1KHz Q=1 AV=2 1/2 AP358 + R3 1M + C2 10µF RB 6.2K R4 100K R5 100K - R4 100K + +V1 R3 100K V O fO 1/2 AP358 VO + +V2 R4 (CMRR depends on this R3 resistor ratio match) R4 V O = (1+ )(V2-V1) R3 As Shown: VO = 2(V2-V1) For 0 R3 100K 1/2 AP358 VO R4 100K 3 Vpp AV=11(As Shown) R2 AV=1+ R1 V+ R1 100K 1/2 AP358 0 VO RL 10K R2 100K R1 R2 = DC Coupled Low-Pass RC Active Filter AP358 Rev. 4 CO + - (As shown, AV=10) AC Coupled Non-Inverting Amplifier C1 0.01µF VIN R1 - CIN VIN R2 16K Rf R2 1M C1 0.1µF VO V O=VR R1 16K AV= VO RL 10K R3 100K + 3 Vpp AC Coupled Inverting Amplifier Comparator with Hysteresis R2 1M + R2 100K V+ RB 6.2K 0 9 of 15 www.diodes.com High Input Z, DC Differential Amplifier OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit ( Continued ) ( V+ = 5.0 VDC ) C1 0.01µF V IN R1 390K R4 390K C2 0.01µF R6 120K - R3 680 R2 620K R5 39K 1/2 AP358 - + 1/2 AP358 R7 100K + C3 10µF VO + R8 100K V+ f O = 1.12KHz Q = 25 Bandpass Active Filter R2 100K - - R3 R4 100K 100K IIN 1/2 AP358 +V1 R1 2K + 2N929* VO *hi β AT 50 nA + 0.001µF IB 1/2 AP358 +V2 1/2 AP358 R5 100K + 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 2R 3M IB 1/2 AP358 + AUX AMP INPUT CURRENT COMPENSATION Using Symmetrical Amplifiers to Reduce Input Current (General Concept) High Input Z Adjustable-Gain DC Instrumentation Amplifier AP358 Rev. 4 +VO 1/2 AP358 + IB - GAIN ADJUST - IB +VIN 10 of 15 www.diodes.com OCTOBER 2006 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS ( TA = 25oC ) Typical Characteristics Large Signal Frequency Response Supply Current 14 1 V+ ID mA 0.6 0.4 0.2 + 0 5V 10V 15V 20V 25V 30V 1K 10 +7VDC 8 0 1k 10k VO V+/2 40 20 0 50 40 30 20 10 + IO -40 1M 10 0K 30 0K 50 0K 10 K 1K 10 0 0 10 1 75K + Iout - Current Drain(mA) V+ - Voltage Gain (dB) 50K Current Limit 10M + V+=15V 60 25K 60 - 80 1M 2 Input Frequency (Hz) V+=30V 0.1µF VIN 100K 500K 4 35V Open Loop Frequency Response 100 2K 6 Supply Voltage (V) 120 +15 VDC V O + 0.8 100K 12 - Vo - Output Voltage (Vp-p) 1.2 - Supply Current Drain (mA) 1.4 0 25 41 60 o Temperature ( C) 80 100 125 Input Frequency (Hz) Voltage Follower Pulse Response Voltage Follower Pulse Response (Small Signal) 11 of 15 www.diodes.com ein + AP358 Rev. 4 - TA=25oC RL > 2.0K V+ = 15VDC eO 50pF TA = +25oC V+ = +30VDC 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. AP358 Rev. 4 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. 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 Package Marking Code Date Code AP358S SOP-8L AP358 YYWW AP358N PDIP-8L AP358 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 ) 0.254 0.08/0.25 5.79/6.20 3.70/4.10 (1) SOP- 8L Gauge Plane Seating Plane 0.38/1.27 Detail "A" 7°~9° 0.20typ 1.30/1.50 1.75max. 0.35max. 45° 0.3/0.5 1.27typ 7°~9° Detail "A" 3.70/4.10 4.80/5.30 (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