[AK2975] AK2975 Precision High Speed Low Noise Operational Amplifier 1. Genaral Description AK2975 is the dual channel Precision CMOS operational amplifiers which is available to output with low Input Offset Voltage (±200μV typ.) , High Band Width and Low Noise. AK2975 is appropriated to Sensor Pre Amp. Applications. 2. Feartures AK2975 is the dual channel Precision CMOS operational amplifiers which is available to output with low Input Offset Voltage (±200μV typ.) , High Band Width and Low Noise. AK2975 is appropriated to Sensor Pre Amp. Applications. • Single Supply Operation Range : 2.7V ~ 5.5V • Low Input Offset Voltage : ±200μV typ. Offset Drift : ±1μ V/°C typ. Input Voltage Noise : 10nVrms/√Hz Typ. (@ 1kHz) Input Common Mode Range : VSS to VDD Output Voltage Range : [VSS+0.03] to [VDD-0.03]V @ (RL:10kΩ) • Power Supply Current : 4mA/ch. typ. (VDD: 5V, No Load) • Gain Bandwidth : 50MHz typ. • Slew Rate : 20V/μsec typ. • Operating Temperature Range : -40 ~ 125°C • Package : MSOP8 Part Name AK2975H Channel Number 2 014011069-E-00 Package MSOP8 2014/11 -1- [AK2975] 3. Table of Contents 1. Genaral Description ............................................................................................................................ 1 2. Feartures ............................................................................................................................................. 1 3. Table of Contents ................................................................................................................................ 2 4. Pin Location ........................................................................................................................................ 2 5. Pin Function Descriptions ................................................................................................................... 3 6. Absolute Maximum Ratings ................................................................................................................ 3 7. Recommended Operating Conditions................................................................................................. 3 8. Electrical Characteristics..................................................................................................................... 4 9. Typical Operating Characteristics (for reference)............................................................................... 6 10. Package ............................................................................................................................................ 14 11. Ordering Guide.................................................................................................................................. 16 4. Pin Location 1:OUTA 2:NINA 3:PINA 8:VDD A 7:OUTB B 6:NINB 4:VSS 5:PINB 8-pin MSOP （AK2975H） Figure 4.1 AK2975 Pin Location 014011069-E-00 2014/11 -2- [AK2975] 5. Pin number 1 2 3 4 5 6 7 8 Note * 1. PWR AI AO Name OUTA NINA PINA VSS PINB NINB OUTB VDD Pin Function Descriptions I/O (* 1) AO AI AI PWR AI AI AO PWR Function Amplifier A Output Amplifier A Inverted Input Amplifier A No Inverted Input Power Supply Ground Amplifier B No Inverted Input Amplifier B Inverted Input Amplifier B Output Positive Power Supply : Power Supply : Analog Input : Analog Output 6. Parameter Supply Voltage Input Voltage Input Current Storage Temperature Range Absolute Maximum Ratings Symbol VDD VTD IIN Tstg VSS=0V (* 2) Max Units 6.5 V VDD + 0.3 V +10 mA 150 C Min -0.3 -0.3 -10 -65 Note * 2. All voltage with respect to ground [WARNING] Operational at or beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. 7. Recommended Operating Conditions Parameter Operationg Temperature Range Ground level (* 2) Supply Voltage Symbol Ta VSS VDD Min. -40 0 2.7 Typ. 0 Max. 125 0 5.5 Units C V V VSS=0V (* 2) Conditions [WARNING] We asuumes no responsibility for the usage beyond the conditions in this datasheet. 014011069-E-00 2014/11 -3- [AK2975] 8. Electrical Characteristics DC Characteristics ( typical condition is VDD= 5V, VCM= VDD/2 (* 3), Ta= 25ºC ) VDD= 5.0V, VCM= VDD/2, VSS= 0V, Ta= -40~125C, unless otherwise noted Parameter Min. Typ. Max. Units Conditions Input Voltage Offset :VIO ± 200 ±1000 V VCM = VDD/2 (* 3) Input Voltage Offset Drift :VIOD ±1 ±3.5 V/C (* 4) Input Bias Current :IS ±1 ± 200 pA Input Common Mode Range :VICM VSS VDD V Output Voltage Swing :VOM 0.03 VDD-0.03 V RL10kΩ Common Mode Rejection Ratio:CMR 60 90 dB (* 5) Power Supply Rejection Ratio :SVR 80 100 dB (* 6) Large Signal Voltage Gain :AV 95 115 dB RL10k connected to VDD/2 (* 7) Output Short Current :IOS ± 450 mA Output Current :IO ± 350. mA Power Supply Current :Idd 4 5 mA/ch. VDD:5V (* 8) Notes * 3. VCM means the common voltage of an input pin (PIN/NIN). * 4. VIOD = [( high temperature side WST(**)) –( low temperature side WST(**))]/[125°C－(－40°C)）] ** WST is MIN. or MAX. value of VIO. ex.) If high temperature side is MAX. and low temperature side is MIN. the VIOD polarity is positive. And if high temperature side is MIN. and low temperature side is MAX. the VIOD polarity is negative. * 5. CMRR = 20 x Log[(VDD-VSS) / ( α )] ‘( α ) is a Max. value among [(Offset at input = VDD)-(Offset at Input = VSS)] and [(Offset at input = VDD)-( Offset at input = VDD/2)] and [(Offset at input = VDD/2)-( Offset at input = VSS)]. * 6. PSRR = 20 x Log[(Max. supply voltage – Min. supply voltage) / (Offset at Max. supply voltage – Offset at Min. supply voltage)] * 7. AV = 20×LOG [ ((VDD-0.2)－(VSS+0.2)) / ((Offset at output= VDD－0.2) － (Offset at output = VSS+0.2)）] * 8. It contains consumption of one OPAmp circuit. It doesn't include an output drive current. 014011069-E-00 2014/11 -4- [AK2975] AC Characteristics VDD= 5.0V, VCM= VDD/2, VSS= 0V, Ta= -40~125C, unless otherwise noted Parameter Min. Typ. Max. Units Conditions Gain Bandwidth (GBW) 50 MHz Ta=25C Slew Rate 20 V/s Ta=25C Input Voltage Noise 10 nVrms @1kHz :IIN1 /√Hz 5 nVrms @10kHz :IIN2 /√Hz THD+N 0.0003 % Input:1kHz, 1Vrms, Av:1V/V, VDD=5.0V, BW:20Hz ~ 20kHz Ta=25C Overload Recovery 160 nsec AV= -10 times, Input swing:300mV Time :TOR (±2.5V) @90% (* 9) Input capacitance Differencial 8 pF Common 7 pF Maximum Capacitance 1000 pF If the 10Ω resistor is connected Loads :CL in series to the output. Note * 9. The definition of “Overload Recovery Time” is following. Positive side overload recovery time (Time until it returns to VDD/2 from VDD saturation) Figure 8.1 Positive side overload recovery time 014011069-E-00 2014/11 -5- [AK2975] Negative side overload recovery time (Time until it returns to VDD/2 from VSS saturation) Figure 8.2 Negative side overload recovery time Note * 10. Notes for a board design AK2975 is high-bandwidth amplifier. Therefore if large impedance and inductance are included to a power supply line, the characteristic may get worse. Please place the decoupling capacitor of "0.1F and 10F" of a low loss near the power supply pin ,between each power supply terminal and a ground. 9. Typical Operating Characteristics (for reference) VDD:5.0V, Ta:25C, CL=0pF unless otherwise noted 9.1 Current consumption – Operating temperature characteristics (Vin/Vout: VDD/2) Figure 9.1 Current consumption vs. Operating temperature 014011069-E-00 2014/11 -6- [AK2975] [ 9. Typical Operating Characteristics (for reference) continuation] 9.2 Current consumption – Supply voltage characteristics (Vin/Vout: VDD/2) Figure 9.2 Current consumption vs. Supply voltage 9.3 Input offset – Temperature characteristics (Vin/Vout: VDD/2) Figure 9.3 Input offset vs. Temperature 014011069-E-00 2014/11 -7- [AK2975] [ 9. Typical Operating Characteristics (for reference) continuation] 9.4 Distribution of Input offset drift (VDD:5V,Vin/Vout: VDD/2,Ta:-40 to 125ºC) Figure 9.4 Input offset drift distribution 9.5 Distribution of Input offset (VDD:5V,Vin/Vout: VDD/2,Ta:-40 to 125ºC) Figure 9.5 Input offset distribution 9.6 Input Bias current – Temperature characteristics Figure 9.6 Input Bias current vs. Temperature 014011069-E-00 2014/11 -8- [AK2975] [ 9. Typical Operating Characteristics (for reference) continuation] 9.7 Output Voltage - Load current characteristics Figure 9.7 Output Volatge vs. Load current 9.8 Short circuit current – Supply Voltage characteristics Figure 9.8 Short curcuit current vs. Supply voltage 9.9 Short circuit current – Temperature characteristics Figure 9.9 Short curcuit current vs. Temperature 014011069-E-00 2014/11 -9- [AK2975] [ 9. Typical Operating Characteristics (for reference) continuation] 9.10 Closed loop gain – Frequency characteristics Figure 9.10 Closed loop gain 9.11 Open loop gain – Frequency characteristics Figure 9.11 Open loop gain 9.12 vs. Frequency vs. Frequency Input voltage noise – Frequency characteristics Figure 9.12 Input voltage noise 014011069-E-00 vs. Frequency 2014/11 - 10 - [AK2975] [ 9. Typical Operating Characteristics (for reference) continuation] 9.13 CMRR – Frequency characteristics Figure 9.13 CMRR 9.14 PSRR – Frequency characteristics Figure 9.14 PSRR 9.15 vs. Frequency vs. Frequency Output Impedance – Frequency characteristics Figure 9.15 Output Impedance vs. Frequency 014011069-E-00 2014/11 - 11 - [AK2975] [ 9. Typical Operating Characteristics (for reference) continuation] 9.16 Maximum output swing – Frequency characteristics Figure 9.16 Maximum output swing 9.17 THD +Noise vs. Frequency – Output amplitude (V) Figure 9.17 THD +Noise 9.18 THD +Noise vs. Output swing – Frequency characteristics 0.54 1 Figure 9.18 THD +Noise vs. Frequency 014011069-E-00 2014/11 - 12 - [AK2975] [ 9. Typical Operating Characteristics (for reference) continuation] 9.19 Small signal step response (CL:0pF) Figure 9.19 Small signal step response 9.20 Large signal step response (CL:0pF) Figure 9.19 Large signal step response 9.21 Small output swing – Frequency characteristics (CL:1000pF,RL:10Ω) Figure 9.21 Small signal step response 9.22 Large signal step response (CL:1000pF,RL:10Ω) Figure 9.22 Large signal step response 014011069-E-00 2014/11 - 13 - [AK2975] [ 9. Typical Operating Characteristics (for reference) continuation] 9.23 Over load recovery time Figure 9.23 Overload recovery time 10. Package 10.1 Marking - MSOP8 8 7 6 5 2975 (2) Y WW A (1) (3) 1 2 (4) (5) 3 4 (1) 1 pin (2) Part No.（AK2975:2975） (3) Date code (Year) (4) Date code (Week) (5) In-house control code 014011069-E-00 2014/11 - 14 - [AK2975] 10.2 Outline Dimensions - MSOP8 Package Outline (UNIT: mm) 014011069-E-00 2014/11 - 15 - [AK2975] 11. Ordering Guide AK2975H -40 ~ 125ºC 8-pin MSOP 014011069-E-00 2014/11 - 16 - [AK2975] IMPORTANT NOTICE 0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products. 1. All information included in this document are provided only to illustrate the operation and application examples of AKM Products. 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