BU7294F-E2

Datasheet Operational Amplifiers Series Input/Output Full Swing High Slew Rate Low Voltage CMOS Operational Amplifiers BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Key Specifications ◼ Low Operating Supply Voltage (single supply): +2.4V to +5.5V ◼ High Slew Rate: 3.0V/µs ◼ Wide Temperature Range: BU7291G/BU7294xx -40C to +85C BU7291SG/BU7294Sxx -40C to +105C ◼ Low Input Offset Current: 1pA (Typ) ◼ Low Input Bias Current: 1pA (Typ) ●General Description BU7291G/BU7294xx and BU7291SG/BU7294Sxx are low supply voltage CMOS operational single/quad Amplifiers. This series is a Input/Output full swing, high slew rate, low supply current and high speed operation. Input bias current is very low at 1pA (Typ) . Especially,BU7291SG and BU7294Sxx, it has wide temperature range from -40C to +105C. ●Features ◼ High slew rate ◼ Input/Output full swing ◼ Large DC voltage gain ◼ Low input bias current ●Package SSOP5 SOP14 SSOP-B14 W(Typ) x D(Typ) x H(Max) 2.90mm x 2.80mm x 1.25mm 8.70mm x 6.20mm x 1.71mm 5.00mm x 6.40mm x 1.35mm ●Application ◼ Battery equipment ◼ Consumer electronics ●Simplified schematic VDD Vbias +IN Class AB control OUT -IN Vbias VSS Figure 1. Simplified schematic (1 channel only) ○Product structure：Silicon monolithic integrated circuit www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･14･001 ○This product is not designed protection against radioactive rays. 1/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Pin Configuration BU7291G, BU7291SG : SSOP5 +IN 1 VSS 2 -IN Pin No. Pin Name 1 +IN 2 VSS 3 -IN 4 OUT 5 VDD 14 OUT4 Pin No. Pin Name 13 -IN4 1 OUT1 -IN1 +IN1 5 VDD + 4 OUT 3 BU7294F, BU7294SF : SOP14 BU7294FV, BU7294SFV : SSOP-B14 OUT1 1 -IN1 2 CH1 CH4 - + + - +IN1 3 12 +IN4 2 VDD 4 11 VSS 3 +IN2 5 -IN2 6 10 +IN3 - + + - CH3 CH2 9 -IN3 OUT2 7 8 OUT3 4 VDD 5 +IN2 6 -IN2 7 OUT2 8 OUT3 9 -IN3 10 +IN3 11 VSS 12 +IN4 13 -IN4 14 OUT4 SSOP5 Package SOP14 SSOP-B14 BU7291G BU7291SG BU7294F BU7294SF BU7294FV BU7294SFV ●Ordering Information B U 7 2 9 Part Number BU7291G BU7291SG BU7294xx BU7294Sxx www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 x x x x Package G:SSOP5 F:SOP14 FV:SSOP-B14 - xx Packaging and forming specification E2: Embossed tape and reel (SOP14/ SSOP-B14) TR: Embossed tape and reel (SSOP5) 2/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Line-up Topr Package Operable Part Number -40C to +85C SSOP5 Reel of 3000 BU7291G-TR -40C to +105C SSOP5 Reel of 3000 BU7291SG-TR -40C to +85C SOP14 Reel of 2500 BU7294F-E2 -40C to +105C SOP14 Reel of 2500 BU7294SF-E2 -40C to +85C SSOP-B14 Reel of 2500 BU7294FV-E2 -40C to +105C SSOP-B14 Reel of 2500 BU7294SFV-E2 ●Absolute Maximum Ratings(Ta=25C) Ratings Parameter Symbol Supply Voltage Power dissipation BU7291 BU7294 VDD-VSS Pd BU7291S BU7294S +7 SSOP5 0.54*1*4 SOP14 0.45*2*4 SSOP-B14 0.70*3*4 Unit V W Differential Input Voltage*5 Input Common-mode Voltage Range Input Current *6 Vid VDD - VSS V Vicm (VSS - 0.3) to VDD + 0.3 V Ii ±10 mA Operating Supply Voltage Vopr +2.4 to +5.5 V Operating Temperature Topr Storage Temperature Maximum Junction Temperature Tstg - 55 to +125 C Tjmax +125 C - 40 to +85 - 40 to +105 C Note: Absolute maximum rating item indicates the condition which must not be exceeded. Application of voltage in excess of absolute maximum rating or use out absolute maximum rated temperature environment may cause deterioration of characteristics. *1 To use at temperature above Ta＝25C reduce 5.4mW. *2 To use at temperature above Ta＝25C reduce 4.5mW. *3 To use at temperature above Ta＝25C reduce 7.0mW. *4 Mounted on a FR4 glass epoxy PCB(70mm×70mm×1.6mm). *5 The voltage difference between inverting input and non-inverting input is the differential input voltage. Then input pin voltage is set to more than VSS. *6 An excessive input current will flow when input voltages of more than VDD+0.6V or lesser than VSS-0.6V are applied. The input current can be set to less than the rated current by adding a limiting resistor. www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 3/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Electrical Characteristics ○BU7291, BU7291S (Unless otherwise specified VDD=+3V, VSS=0V, Ta=25C) Limits Temperature Parameter Symbol Range Min. Typ. Max. Unit Condition Input Offset Voltage *7 Vio 25C - 1 9 mV - Input Offset Current*7 Iio 25C - 1 - pA - Input Bias Current *7 Ib 25C - 1 - pA - 25C - 470 800 Full range - - 1100 μA RL=∞ Av=0dB, +IN=1.5V - V RL=10kΩ - VSS+0.1 V RL=10kΩ 70 105 - dB RL=10kΩ 25C 0 - 3 V VSS to VDD CMRR 25C 40 60 - dB - Power Supply Rejection Ratio PSRR 25C 45 80 - dB - Output Source Current *9 Isource 25C 5 8 - mA VDD-0.4V Isink 25C 9 16 - mA VSS+0.4V SR 25C - 3.0 - V/μs CL=25pF GBW 25C - 2.8 - MHz CL=25pF, f=100kHz Unity Gain Frequency fT 25C - 2.8 - MHz CL=25pF Phase Margin θ 25C - 50 - deg CL=25pF THD+N 25C - 0.03 - % Supply Current*8 IDD Maximum Output Voltage(High) VOH 25C VDD-0.1 - Maximum Output Voltage(Low) VOL 25C - Av 25C Vicm Common-mode Rejection Ratio Large Signal Voltage Gain Input Common-mode Voltage Range Output Sink Current *9 Slew Rate Gain Band Width Total Harmonic Distortion +Noise *7 *8 *9 OUT=0.8VP-P, f=1kHz Absolute value Full range BU7291: Ta=-40C to +85C BU7291S: Ta=-40C to +105C Under the high temperature environment, consider the power dissipation of IC when selecting the output current. When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC. www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 4/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ○BU7294, BU7294S (Unless otherwise specified VDD=+3V, VSS=0V, Ta=25C) Limits Temperature Parameter Symbol Range Min. Typ. Max. Unit Condition Input Offset Voltage *10 Vio 25C - 1 9 mV - Input Offset Current*10 Iio 25C - 1 - pA - Input Bias Current *10 Ib 25C - 1 - pA - 25C - 2000 3200 Full range - - 4400 VOH 25C VDD-0.1 - VOL 25C - Av 25C Vicm Common-mode Rejection Ratio μA RL=∞, All Op-Amps Av=0dB, +IN=1.5V - V RL=10kΩ - VSS+0.1 V RL=10kΩ 70 105 - dB RL=10kΩ 25C 0 - 3 V VSS to VDD CMRR 25C 40 60 - dB - Power Supply Rejection Ratio PSRR 25C 45 80 - dB - Output Source Current *12 Isource 25C 5 8 - mA VDD-0.4V Isink 25C 9 16 - mA VSS+0.4V SR 25C - 3.0 - V/μs CL=25pF GBW 25C - 2.8 - MHz CL=25pF, f=100kHz Unity Gain Frequency fT 25C - 2.8 - MHz CL=25pF Phase Margin θ 25C - 50 - deg CL=25pF THD+N 25C - 0.03 - % OUT=0.8VP-P, f=1kHz CS 25C - 100 - dB f=1kHz, OUT=0.5Vrms Supply Current*11 IDD Maximum Output Voltage(High) Maximum Output Voltage(Low) Large Signal Voltage Gain Input Common-mode Voltage Range Output Sink Current *12 Slew Rate Gain Band Width Total Harmonic Distortion +Noise Channel Separation *10 *11 *12 Absolute value Full range BU7294: Ta=-40C to +85C BU7294S: Ta=-40C to +105C Under the high temperature environment, consider the power dissipation of IC when selecting the output current. When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC. www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 5/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 BU7291G, BU7291SG, BU7294xx, BU7294Sxx Datasheet Description of Electrical Characteristics Described below are descriptions of the relevant electrical terms used in this datasheet. Items and symbols used are also shown. Note that item name and symbol and their meaning may differ from those on another manufacturer’s document or general document. 1. Absolute maximum ratings Absolute maximum rating items indicate the condition which must not be exceeded. Application of voltage in excess of absolute maximum rating or use out of absolute maximum rated temperature environment may cause deterioration of characteristics. 1.1 Supply Voltage (VDD/VSS) Indicates the maximum voltage that can be applied between the VDD terminal and VSS terminal without deterioration or destruction of characteristics of internal circuit. 1.2 Differential Input Voltage (Vid) Indicates the maximum voltage that can be applied between non-inverting and inverting terminals without damaging the IC. 1.3 Input Common-mode Voltage Range (Vicm) Indicates the maximum voltage that can be applied to the non-inverting and inverting terminals without deterioration or destruction of electrical characteristics. Input common-mode voltage range of the maximum ratings does not assure normal operation of IC. For normal operation, use the IC within the input common-mode voltage range characteristics. 1.4 Power dissipation (Pd) Indicates the power that can be consumed by the IC when mounted on a specific board at the ambient temperature 25C (normal temperature). As for package product, Pd is determined by the temperature that can be permitted by the IC in the package (maximum junction temperature) and the thermal resistance of the package. 2. Electrical characteristics 2.1 Input Offset Voltage (Vio) Indicates the voltage difference between non-inverting terminal and inverting terminals. It can be translated into the input voltage difference required for setting the output voltage at 0 V. 2.2 Input Offset Current (Iio) Indicates the difference of input bias current between the non-inverting and inverting terminals. 2.3 Input Bias Current (Ib) Indicates the current that flows into or out of the input terminal. It is defined by the average of input bias currents at the non-inverting and inverting terminals. 2.4 Supply Current (IDD) Indicates the current that flows within the IC under specified no-load conditions. 2.5 Maximum Output Voltage(High) / Maximum Output Voltage(Low) (VOH/VOL) Indicates the voltage range of the output under specified load condition. It is typically divided into maximum output voltage High and low. Maximum output voltage high indicates the upper limit of output voltage. Maximum output voltage low indicates the lower limit. 2.6 Large Signal Voltage Gain (Av) Indicates the amplifying rate (gain) of output voltage against the voltage difference between non-inverting terminal and inverting terminal. It is normally the amplifying rate (gain) with reference to DC voltage. Av = (Output voltage) / (Differential Input voltage) 2.7 Input Common-mode Voltage Range (Vicm) Indicates the input voltage range where IC normally operates. 2.8 Common-mode Rejection Ratio (CMRR) Indicates the ratio of fluctuation of input offset voltage when the input common mode voltage is changed. It is normally the fluctuation of DC. CMRR = (Change of Input common-mode voltage)/(Input offset fluctuation) 2.9 Power Supply Rejection Ratio (PSRR) Indicates the ratio of fluctuation of input offset voltage when supply voltage is changed. It is normally the fluctuation of DC. PSRR= (Change of power supply voltage)/(Input offset fluctuation) 2.10 Output Source Current/ Output Sink Current (Isource / Isink) The maximum current that can be output from the IC under specific output conditions. The output source current indicates the current flowing out from the IC, and the output sink current indicates the current flowing into the IC. 2.11 Slew Rate (SR) Indicates the ratio of the change in output voltage with time when a step input signal is applied. 2.12 Gain Band Width (GBW) The product of the open-loop voltage gain and the frequency at which the voltage gain decreases 6dB/octave. 2.13 Unity Gain Frequency (fT) Indicates a frequency where the voltage gain of operational amplifier is 1. 2.14 Phase Margin (θ) Indicates the margin of phase from 180 degree phase lag at unity gain frequency. 2.16 Total Harmonic Distortion+Noise (THD+N) Indicates the fluctuation of input offset voltage or that of output voltage with reference to the change of output voltage of driven channel. 2.12 Channel Separation (CS) Indicates the fluctuation in the output voltage of the driven channel with reference to the change of output voltage of the channel which is not driven. www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 6/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves ○BU7291, BU7291S 800 0.8 POWER DISSIPATION [W] . POWER DISSIPATION [W] . 800 0.8 0.6 600 BU7291G 400 0.4 0.2 200 0 0 85 25 50 75 AMBIENT TEMPERATURE [°C] 0.6 600 BU7291SG 0.4 400 0.2 200 0 100 0 125 Figure 3. Derating curve 1200 1200 1000 1000 SUPPLY CURRENT [μA] SUPPLY CURRENT [μA] Figure 2. Derating curve 105 25 50 75 100 AMBIENT TEMPERATURE [°C] 800 105C 85C 600 400 -40C 25C 200 800 5.5V 600 3.0V 400 2.4V 200 0 0 2 3 4 5 SUPPLY VOLTAGE [V] 6 -50 -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 125 Figure 5. Supply Current – Ambient Temperature Figure 4. Supply Current – Supply Voltage (*)The data above is measurement value of typical sample, it is not guaranteed. BU7291G: -40C to +85C BU7291SG: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 7/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves - Continued ○BU7291, BU7291S 6 6 OUTPUT VOLTAGE HIGH [V] OUTPUT VOLTAGE HIGH [V] 105C 5 85C 4 25C 3 -40C 2 1 0 5 5.5V 4 3.0V 3 2.4V 2 1 0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6 -50 Figure 6. Maximum Output Voltage High – Supply Voltage (RL=10kΩ) 125 Figure 7. Maximum Output Voltage High – Ambient Temperature (RL=10kΩ) 10 OUTPUT VOLTAGE LOW [mV] 10 OUTPUT VOLTAGE LOW [mV] -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 8 6 85C -40C 105C 25C 4 2 0 8 6 5.5V 4 2 2.4V 3.0V 0 2 3 4 5 SUPPLY VOLTAGE [V] 6 -50 Figure 8. Maximum Output Voltage Low Supply Voltage (RL=10kΩ) -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 125 Figure 9. Maximum Output Voltage Low – Ambient Temperature (RL=10kΩ) (*)The data above is measurement value of typical sample, it is not guaranteed. BU7291G: -40C to +85C BU7291SG: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 8/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves - Continued ○BU7291, BU7291S 20 OUTPUT SOURCE CURRENT [mA] OUTPUT SOURCE CURRENT [mA] 50 40 -40C 25C 30 20 85C 105C 10 5.5V 15 3.0V 10 2.4V 5 0 0 0 0.5 1 1.5 2 2.5 -50 3 0 25 50 75 100 125 AMBIENT TEMPERATURE [°C] OUTPUT VOLTAGE [V] Figure 10. Output Source Current – Output Voltage (VDD=3V) Figure 11. Output Source Current – Ambient Temperature (OUT=VDD-0.4V) 80 80 OUTPUT SINK CURRENT [mA] -40C OUTPUT SINK CURRENT [mA] -25 60 25C 40 85C 105C 20 60 5.5V 40 3.0V 20 2.4V 0 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -50 OUTPUT VOLTAGE [V] -25 0 25 50 75 100 125 AMBIENT TEMPERATURE [°C] Figure 12. Output Sink Current – Output Voltage (VDD=3V) Figure 13. Output Sink Current – Ambient Temperature (OUT=VSS+0.4V) (*)The data above is measurement value of typical sample, it is not guaranteed. BU7291G: -40C to +85C BU7291SG: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 9/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves - Continued ○BU7291, BU7291S 5 5 4 4 25C INPUT OFFSET VOLTAGE [mV] INPUT OFFSET VOLTAGE [mV] -40C 3 2 1 85C 105C 0 -1 -2 -3 -4 2 5.5V 1 0 3.0V -1 2.4V -2 -3 -4 -5 -5 2 3 4 5 6 -50 SUPPLY VOLTAGE [V] -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] Figure 14. Input Offset Voltage – Supply Voltage (Vicm=VDD, OUT=1.5V) Figure 15. Input Offset Voltage – Ambient Temperature (Vicm=VDD, OUT=1.5V) 15 125 160 LARGE SIGNAL VOLTAGE GAIN [dB] . INPUT OFFSET VOLTAGE [mV] 3 10 -40C 85C 105C 5 0 25C -5 -10 -15 140 105C 85C 120 25C 100 -40C 80 60 -1 0 1 2 3 4 COMMON MODE INPUT VOLTAGE [V] 2 Figure 16. Input Offset Voltage – Common Mode Input Voltage (VDD=3V) 3 4 5 SUPPLY VOLTAGE [V] 6 Figure 17. Large Signal Voltage Gain – Supply Voltage (*)The data above is measurement value of typical sample, it is not guaranteed. BU7291G: -40C to +85C BU7291SG: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 10/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves - Continued ○BU7291, BU7291S COMMON MODE REJECTION REJECTION RATIO RATIO [dB] [dB] LARGE SIGNAL VOLTAGE GAIN [dB] . 160 140 5.5V 120 3.0V 2.4V 100 80 60 120 100 105C 85C 80 60 -40C 40 20 0 -50 -25 0 25 50 75 100 125 2 AMBIENT TEMPERATURE [°C] 3 4 5 SUPPLY VOLTAGE [V] 6 Figure 19. Common Mode Rejection Ratio – Supply Voltage Figure 18. Large Signal Voltage Gain – Ambient Temperature 140 120 POWER SUPPLY REJECTION RATIO [dB] COMMON MODE REJECTION RATIO [dB] . 25C 120 100 100 5.5V 80 60 3.0V 2.4V 40 20 0 -50 -25 0 25 50 75 100 125 80 60 40 20 0 -50 AMBIENT TEMPERATURE [°C] Figure 20. Common Mode Rejection Ratio – Ambient Temperature -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 125 Figure 21. Power Supply Rejection Ratio – Ambient Temperature (*)The data above is measurement value of typical sample, it is not guaranteed. BU7291G: -40C to +85C BU7291SG: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 11/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves - Continued ○BU7291, BU7291S 5 5 5.5V 4 SLEW RATE H-L [V/μs] SLEW RATE L-H [V/μs] 4 5.5V 3 2.4V 3.0V 2 1 3.0V 3 2.4V 2 1 0 0 -50 -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 125 -50 Figure 22. Slew Rate L-H – Ambient Temperature -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 125 Figure 23. Slew Rate H-L – Ambient Temperature 100 200 Phase 80 60 100 Gain 40 PHASE [deg] GAIN[dB] 150 50 20 0 0 1.E+01 101 1.E+02 102 1.E+03 1.E+04 1.E+05 103 104 105 FREQUENCY [Hz] 1.E+06 106 1.E+07 107 Figure 24. Voltage Gain・Phase－Frequency (*)The data above is measurement value of typical sample, it is not guaranteed. BU7291G: -40C to +85C BU7291SG: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 12/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves - Continued ○BU7294, BU7294S 800 0.8 0.8 800 600 0.6 POWER DISSIPATION [W] POWER DISSIPATION [W] BU7294F BU7294FV 400 0.4 0.2 200 600 0.6 BU7294SF BU7294SFV 400 0.4 0.2 200 0 0 0 85 25 50 75 100 AMBIENT TEMPERATURE [°C] 105 25 50 75 100 125 AMBIENT TEMPERATURE [°C] 0 125 Figure 26. Derating curve 5000 5000 4000 4000 SUPPLY CURRENT [uA] SUPPLY CURRENT [uA] Figure 25. Derating curve 105C 3000 85C 2000 25C 1000 -40C 3000 5.5V 2000 3.0V 2.4V 1000 0 0 2 3 4 5 SUPPLY VOLTAGE [V] 6 -50 Figure 27. Supply Current – Supply Voltage -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 125 Figure 28. Supply Current – Ambient Temperature (*)The data above is measurement value of typical sample, it is not guaranteed. BU7294G: -40C to +85C BU7294SG: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 13/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves - Continued ○BU7294, BU7294S 6 6 OUTPUT VOLTAGE HIGH [V] OUTPUT VOLTAGE HIGH [V] 105C 5 25C 4 85C 3 -40C 2 1 0 5 5.5V 4 3.0V 3 2 2.4V 1 0 2 3 4 5 SUPPLY VOLTAGE [V] 6 -50 9 9 OUTPUT VOLTAGE LOW [mV] OUTPUT VOLTAGE LOW [mV] 10 8 7 105C 85C 5 4 3 -40C 25 50 75 100 125 Figure 30. Maximum Output Voltage High – Ambient Temperature (RL=10kΩ) 10 2 0 AMBIENT TEMPERATURE [°C] Figure 29. Maximum Output Voltage High – Supply Voltage (RL=10kΩ) 6 -25 25C 1 8 7 6 5.5V 5 4 3 3.0V 2 2.4V 1 0 0 2 3 4 5 SUPPLY VOLTAGE [V] 6 -50 Figure 31. Maximum Output Voltage Low – Supply Voltage (RL=10kΩ) -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 125 Figure 32. Maximum Output Voltage Low – Ambient Temperature (RL=10kΩ) (*)The data above is measurement value of typical sample, it is not guaranteed. BU7294G: -40C to +85C BU7294SG: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 14/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves - Continued ○BU7294, BU7294S 50 OUTPUT SOURCE CURRENT [mA] OUTPUT SOURCE CURRENT [mA] 50 40 -40C 25C 30 20 85C 105C 10 40 30 20 5.5V 3.0V 10 2.4V 0 0 0 0.5 1 1.5 2 2.5 3 -50 OUTPUT VOLTAGE [V] 0 25 50 75 100 125 AMBIENT TEMPERATURE [°C] Figure 33. Output Source Current – Output Voltage (VDD=3V) Figure 34. Output Source Current –Ambient Temperature (OUT=VDD-0.4V) 80 OUTPUT SINK CURRENT [mA] 80 OUTPUT SINK CURRENT [mA] -25 -40C 60 25C 40 85C 105C 20 60 40 5.5V 3.0V 20 2.4V 0 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -50 OUTPUT VOLTAGE [V] -25 0 25 50 75 100 125 AMBIENT TEMPERATURE [°C] Figure 36. Output Sink Current – Ambient Temperature (OUT=VSS+0.4V) Figure 35. Output Sink Current – Output Voltage (VDD=3V) (*)The data above is measurement value of typical sample, it is not guaranteed. BU7294: -40C to +85C BU7294S: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 15/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx 5 5 4 4 INPUT OFFSET VOLTAGE [mV] INPUT OFFSET VOLTAGE [mV] ●Typical Performance Curves - Continued ○BU7294, BU7294S 3 2 1 0 85C 105C -1 -2 -40C 25C -3 2 1 0 -1 -2 -4 -5 -5 3 4 5 SUPPLY VOLTAGE [V] Figure 37. Input Offset Voltage – Supply Voltage 3.0V 2.4V 5.5V -3 -4 2 -50 6 -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 125 Figure 38. Input Offset Voltage – Ambient Temperature 160 [dB] GAIN[dB] VOLTAGEGAIN SIGNALVOLTAGE LARGESIGNAL LARGE 15 INPUT OFFSET VOLTAGE [mV] 3 10 -40C 25C 85C 105C 5 0 -5 -10 140 105C 120 100 -40C 25C 85C 80 60 -15 -1 0 1 2 3 COMMON MODE INPUT VOLTAGE [V] 2 4 3 4 5 SUPPLY VOLTAGE [V] 6 Figure 40. Large Signal Voltage Gain – Supply Voltage Figure 39. Input Offset Voltage – Common Mode Input Voltage (VDD=3V) (*)The data above is measurement value of typical sample, it is not guaranteed. BU7294: -40C to +85C BU7294S: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 16/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves - Continued ○BU7294, BU7294S COMMON [dB] RATIO[dB] REJECTION RATIO MODEREJECTION COMMONMODE LARGESIGNAL SIGNALVOLTAGE VOLTAGEGAIN GAIN[dB] [dB] LARGE 160 140 120 100 2.4V 80 5.5V 3.0V 60 40 20 0 -50 -25 0 25 50 75 100 120 100 105C 85C 80 60 -40C 20 0 125 2 AMBIENT TEMPERATURE [°C] 3 4 5 SUPPLY VOLTAGE [V] 6 Figure 42. Common Mode Rejection Ratio – Supply Voltage Figure 41. Large Signal Voltage Gain – Ambient Temperature 140 120 POWER SUPPLY REJECTION RATIO [dB] COMMON MODE REJECTION RATIO [dB] COMMON MODE REJECTION RATIO [dB] 25C 40 120 100 5.5V 100 80 60 2.4V 3.0V 40 20 0 80 60 40 20 0 -50 -25 0 25 50 75 100 125 -50 AMBIENT TEMPERATURE [°C] Figure 43. Common Mode Rejection Ratio – Ambient Temperature -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 125 Figure 44. Power Supply Rejection Ratio – Ambient Temperature (*)The data above is measurement value of typical sample, it is not guaranteed. BU7294: -40C to +85C BU7294S: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 17/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Typical Performance Curves - Continued ○BU7294, BU7294S 5 5 4 SLEW RATE H-L [V/μs] SLEW RATE L-H [V/μs] 5.5V 5.5V 3 2.4V 2 3.0V 4 2.4V 2 1 1 0 0 -50 -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 125 3.0V 3 -50 125 Figure 46. Slew Rate H-L – Ambient Temperature Figure 45. Slew Rate L-H – Ambient Temperature 100 -25 0 25 50 75 100 AMBIENT TEMPERATURE [°C] 200 Phase 150 60 100 40 Gain PHASE [deg] GAIN[dB] 80 50 20 0 1 10 0 2 10 0 3 10 1 4 10 10 105 100 0 6 7 10 10 1000 10000 FREQUENCY [Hz] Figure 47. Voltage Gain・Phase－Frequency (*)The data above is measurement value of typical sample, it is not guaranteed. BU7294: -40C to +85C BU7294S: -40C to +105C www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 18/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Application Information NULL method condition for Test circuit1 Parameter Input Offset Voltage VDD, VSS, EK, Vicm Unit:V VF S1 S2 S3 VDD VSS EK VF1 ON ON OFF 3 0 -1.5 ON ON ON 3 0 VF2 VF3 1 1.5 2 -2.5 VF4 0 ON ON OFF 3 0 -1.5 VF5 3 3 VF6 Power Supply Rejection Ratio 3 -0.5 Large Signal Voltage Gain Common-mode Rejection Ratio (Input Common-mode Voltage Range) Vicm Calculation ON ON 2.4 OFF VF7 0 -1.2 0 4 5.5 － Calculation－ |VF1| 1. Input Offset Voltage (Vio) Vio = 2. Large Signal Voltage Gain(Av) Av = 20Log [V] 1+RF/RS 2 × (1+RF/RS) [dB] |VF2-VF3| 3. Common-mode Rejection Ratio (CMRR) CMRR= 20Log 1.8 × (1+RF/RS) [dB] |VF4 - VF5| 4. Power Supply Rejection Ratio (PSRR) PSRR = 20Log 3.8 × (1+ RF/RS) [dB] |VF6 - VF7| 0.1µF RF=50kΩ SW1 EK RS=50Ω 0.01µF 500kΩ VDD Ri=10kΩ 15V Vo 500kΩ 0.015µF 0.015µF DUT NULL SW3 RS=50Ω Ri=10kΩ 1000pF RL Vicm 50kΩ VF SW2 VSS VRL -15V Figure 48. Test circuit 1 (one channel only) www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 19/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx Switch Condition for Test circuit2 SW No. SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 SW9 SW10 SW11 SW12 Supply Current OFF OFF ON OFF ON OFF OFF OFF OFF OFF OFF OFF Maximum Output Voltage RL=10kΩ OFF ON OFF OFF ON OFF OFF Output Current OFF ON OFF OFF ON OFF OFF OFF OFF Slew Rate OFF OFF Unity Gain Frequency ON ON OFF OFF OFF OFF OFF ON ON ON ON OFF OFF ON ON OFF OFF OFF OFF ON OFF OFF ON OFF OFF OFF ON OFF OFF ON Input voltage SW3 VH R2 100kΩ SW4 ● ● VDD=3V VL t － SW1 Input wave SW2 Output voltage ＋ SW5 SW6 SW8 SW7 SW9 SW10 SW11 SW12 90% SR=ΔV/Δt VH R1 1kΩ VSS ΔV RL VIN- VIN+ CL 10% VL VL Vo Δt t Output wave Figure 50. Slew rate input output wave Figure 49. Test circuit 2 R2=100kΩ R2=100kΩ VDD VDD R1=1kΩ R1=1kΩ OTHER CH VIN R1//R2 OUT1 =0.5Vrms OUT2 R1//R2 VSS VSS CS=20Log 100×OUT1 OUT2 Figure 51. Test circuit 3 (Channel Separation) www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 20/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 BU7291G, BU7291SG, BU7294xx, BU7294Sxx Datasheet ●Application example ○Voltage follower Voltage gain is 0dB. Using this circuit, the output voltage (OUT) is configured to be equal to the input voltage (IN). This circuit also stabilizes the output voltage (OUT) due to high input impedance and low output impedance. Computation for output voltage (OUT) is shown below. OUT=IN VDD OUT IN VSS Figure 52. Voltage follower ○Inverting amplifier R2 For inverting amplifier, input voltage (IN) is amplified by a voltage gain and depends on the ratio of R1 and R2. The out-of-phase output voltage is shown in the next expression OUT=-(R2/R1)・IN This circuit has input impedance equal to R1. VDD R1 IN OUT R1//R2 VSS Figure 53. Inverting amplifier circuit ○Non-inverting amplifier R1 R2 VDD OUT For non-inverting amplifier, input voltage (IN) is amplified by a voltage gain, which depends on the ratio of R1 and R2. The output voltage (OUT) is in-phase with the input voltage (IN) and is shown in the next expression. OUT=(1 + R2/R1)・IN Effectively, this circuit has high input impedance since its input side is the same as that of the operational amplifier. IN VSS Figure 54. Non-inverting amplifier circuit www.rohm.com ©2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 21/27 TSZ02201-0RAR1G200390-1-2 11.Dec.2020 Rev.002 Datasheet BU7291G, BU7291SG, BU7294xx, BU7294Sxx ●Power Dissipation Power dissipation (total loss) indicates the power that the IC can consume at Ta=25C (normal temperature). As the IC consumes power, it heats up, causing its temperature to be higher than the ambient temperature. The allowable temperature that the IC can accept is limited. This depends on the circuit configuration, manufacturing process, and consumable power. Power dissipation is determined by the allowable temperature within the IC (maximum junction temperature) and the thermal resistance of the package used (heat dissipation capability). Maximum junction temperature is typically equal to the maximum storage temperature. The heat generated through the consumption of power by the IC radiates from the mold resin or lead frame of the package. Thermal resistance, represented by the symbol θjaC/W, indicates this heat dissipation capability. Similarly, the temperature of an IC inside its package can be estimated by thermal resistance. Figure 55. (a) shows the model of the thermal resistance of a package. The equation below shows how to compute for the Thermal resistance (θja), given the ambient temperature (Ta), maximum junction temperature (Tjmax), and power dissipation (Pd). θja = (Tjmax－Ta) / Pd C/W ・・・・・ (Ⅰ) The Derating curve in Figure 55. (b) indicates the power that the IC can consume with reference to ambient temperature. Power consumption of the IC begins to attenuate at certain temperatures. This gradient is determined by Thermal resistance (θja), which depends on the chip size, power consumption, package, ambient temperature, package condition, wind velocity, etc. This may also vary even when the same of package is used. Thermal reduction curve indicates a reference value measured at a specified condition. Figure 56. (c) to (d) shows an example of the derating curve for BU7291, BU7291S, BU7294, BU7294S. θja=(Tjmax-Ta)/Pd Power dissipation of LSI [W] Pd(max) C/W Power dissipation of IC P2 Ambient temperature Ta[ C ] θja2