Datasheet Input/Output Full Swing Low Supply Current CMOS Operational Amplifier for Automotive BU7241YG-C General Description Key Specifications Operating Supply Voltage Range: Single Supply Split Supply Operating Temperature Range: Supply Current: Input Offset Current: Input Bias Current: BU7241YG-C is a low-voltage input/output full-swing CMOS operational amplifier that operates on a wide temperature range and low supply current. It is suitable for a sensor amplifier and battery-powered equipment which require low input bias current. Features AEC-Q100 Qualified (Note 1) Input/output Full Swing Low Operating Supply Voltage Low Supply Current Low Input Bias Current Wide Operating Temperature Range 1.8V to 5.5V ±0.9V to ±2.75V -40°C to +125°C 70µA (Typ) 1pA (Typ) 1pA (Typ) Special Characteristics Input Offset Voltage -40°C to +125°C: Package SSOP5 (Note 1: Grade 1) 12mV(Max) W(Typ) x D(Typ) x H(Max) 2.90mm x 2.80mm x 1.25mm Applications Sensor Amplifiers Battery-powered Equipment Automotive Electronics SSOP5 Pin Configuration (TOP VIEW) IN+ 1 VSS 2 5 VDD + - IN- 3 4 OUT Pin Description Pin No. Pin Name Function 1 IN+ Non-inverting input 2 VSS Ground/Negative power supply 3 IN- 4 OUT Output 5 VDD Positive power supply Inverting input ○Product structure：Silicon monolithic integrated circuit www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･14･001 ○This product has no designed protection against radioactive rays. 1/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Block Diagram VDD Vbias IN+ Class AB control OUT IN- Vbias VSS Figure 1. Block Diagram Absolute Maximum Ratings (TA=25°C) Symbol Rating Unit VDD-VSS 7 V Power Dissipation PD 0.67(Note 2,3) W Differential Input Voltage (Note 4) VID VDD - VSS V Input Common-mode Voltage Range VICM (VSS - 0.3) to (VDD + 0.3) V II ±10 mA Operating Supply Voltage Vopr 1.8 to 5.5 ±0.9 to ±2.75 V Operating Temperature Topr -40 to +125 °C Storage Temperature Tstg -55 to +150 °C Maximum Junction Temperature Tjmax 150 °C Parameter Supply Voltage Input Current (Note 5) (Note 2) To use at temperature above TA=25°C reduce 5.4mW/°C. (Note 3) Mounted on an FR4 glass epoxy PCB 70mm×70mm×1.6mm (Copper foil area less than 3%). (Note 4) The voltage difference between inverting input and non-inverting input is the differential input voltage The input pin voltage is set to more than VSS. (Note 5) An excessive input current will flow when input voltages of more than VDD+0.6V or less than VSS-0.6V are applied. The input current can be set to less than the rated current by adding a limiting resistor. Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the absolute maximum ratings. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 2/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Electrical Characteristics (Unless otherwise specified VDD=3V, VSS=0V, TA=25°C) Parameter Input Offset Voltage (Note 6, 7) Symbol Limit Min Typ Max 25°C - 1 10 Full range - - 12 25°C - 1 - 25°C - 1 300 Full range - - 6000 25°C - 70 150 VIO Input Offset Current (Note 6) IIO Input Bias Current (Note 6, 7) IB Supply Current (Note 7) Temperature Range IDD Unit Conditions mV VDD=1.8V to 5.5V pA - pA - μA RL=∞, AV=0dB, IN+=1.5V V RL=10kΩ V RL=10kΩ dB RL=10kΩ Full range - - 250 25°C VDD-0.05 - - Full range VDD-0.1 - - 25°C - - VSS+0.05 Full range - - VSS+0.1 25°C 70 100 - Full range 65 - - VICM 25°C 0 - 3 V - Common-mode Rejection Ratio CMRR 25°C 45 70 - dB - Power Supply Rejection Ratio PSRR 25°C 60 80 - dB - 25°C 4 10 - Output Source Current (Note 7, 8) ISOURCE Full range 2 - - 25°C 5 15 - Full range 3 - - SR 25°C - 0.4 GBW 25°C - θ 25°C THD+N 25°C Maximum Output Voltage (High) (Note 7) Maximum Output Voltage(Low) (Note 7) Large Signal Voltage Gain (Note 7) Input Common-mode Voltage Range Output Sink Current (Note 7, 8) Slew Rate Gain Bandwidth Product Phase Margin Total Harmonic Distortion + Noise VOH VOL AV mA OUT=VDD-0.4V mA OUT=VSS+0.4V - V/μs CL=25pF 1 - MHz - 50 - deg - 0.05 - % ISINK CL=25pF, AV=40dB CL=25pF, AV=40dB OUT=0.8VP-P, f=1kHz (Note 6) Absolute value (Note 7) Full range: TA=-40°C to +125°C (Note 8) Consider the power dissipation of the IC under high temperature environment when selecting the output current value. There may be a case where the output current value is reduced due to the rise in IC temperature caused by the heat generated inside the IC. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 3/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C 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 positive power supply terminal and negative power supply 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 Phase Margin (θ) Indicates the margin of phase from 180 degree phase lag at unity gain frequency. 2.14 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. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 4/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Typical Performance Curves 0.8 250 125°C Supply Current [μA] Power Dissipation [W] 200 0.6 0.4 150 100 25°C 0.2 50 -40°C 0.0 0 0 25 50 75 100 125 150 1 3 4 5 Ambient Temperature [°C] Supply Voltage [V] Figure 2. Power Dissipation vs Ambient Temperature (Derating Curve) Figure 3. Supply Current vs Supply Voltage 6 6 Maximum Output Voltage (High) [V] 250 200 Supply Current [μA] 2 150 5.5V 3.0V 100 1.8V 50 0 5 125°C 25°C 4 -40°C 3 2 1 0 -50 -25 0 25 50 75 100 125 1 2 3 4 5 Ambient Temperature [°C] Supply Voltage [V] Figure 4.Supply Current vs Ambient Temperature Figure 5. Maximum Output Voltage (High) vs Supply Voltage (RL=10kΩ) 6 (*)The above characteristics are measurements of typical sample, they are not guaranteed. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 5/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Typical Performance Curves - Continued 20 5.5V 5 Maximum Output Voltage (Low) [mV] Maximum Output Voltage (High) [V] 6 4 3.0V 3 1.8V 2 1 0 10 125°C 5 25°C -40°C 0 -50 -25 0 25 50 75 100 125 1 2 3 4 5 Ambient Temperature [°C] Supply Voltage [V] Figure 6. Maximum Output Voltage (High) vs Ambient Temperature (RL=10kΩ) Figure 7. Maximum Output Voltage (Low) vs Supply Voltage (RL=10kΩ) 6 10 20 -40°C Output Source Current [mA] Maximum Output Voltage (Low) [mV] 15 15 10 5.5V 5 3.0V 25°C 8 6 125°C 4 2 1.8V 0 0 -50 -25 0 25 50 75 100 0.0 125 0.3 0.6 0.9 1.2 1.5 1.8 Ambient Temperature [°C] Output Voltage [V] Figure 8. Maximum Output Voltage (Low) vs Ambient Temperature (RL=10kΩ) Figure 9. Output Source Current vs Output Voltage (VDD=1.8V) (*)The above characteristics are measurements of typical sample, they are not guaranteed. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 6/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Typical Performance Curves - Continued 50 80 125°C Output Source Current [mA] Output Source Current [mA] 70 40 125°C 30 20 25°C -40°C 60 50 25°C 40 30 -40°C 20 10 10 0 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 1 2 3 4 5 6 Output Voltage [V] Output Voltage [V] Figure 10. Output Source Current vs Output Voltage (VDD=3.0V) Figure 11. Output Source Current vs Output Voltage (VDD=5.5V) 20 20 16 16 Output Sink Current [mA] Output Source Current [mA] -40°C 5.5V 12 3.0V 8 1.8V 4 25°C 12 125°C 8 4 0 0 -50 -25 0 25 50 75 100 125 0 0.3 0.6 0.9 1.2 1.5 1.8 Ambient Temperature [°C] Output Voltage [V] Figure 12. Output Source Current vs Ambient Temperature (OUT=VDD-0.4V) Figure 13. Output Sink Current vs Output Voltage (VDD=1.8V) (*)The above characteristics are measurements of typical sample, they are not guaranteed. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 7/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Typical Performance Curves - Continued 100 40 125°C 125°C 80 Output Sink Current [mA] Output Sink Current [mA] 32 25°C 24 -40°C 16 60 25°C 40 8 -40°C 20 0 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 1 2 3 4 5 6 Output Voltage [V] Output Voltage [V] Figure 14. Output Sink Current vs Output Voltage (VDD=3.0V) Figure 15. Output Sink Current vs Output Voltage (VDD=5.5V) 40 10.0 30 20 Input Offset Voltage [mV] Output Sink Current [mA] 7.5 5.5V 3.0V 10 1.8V 5.0 2.5 0.0 125°C 25°C -40°C -2.5 -5.0 -7.5 0 -10.0 -50 -25 0 25 50 75 100 125 1 2 3 4 5 6 Ambient Temperature [°C] Supply Voltage [V] Figure 16. Output Sink Current vs Ambient Temperature (OUT=VSS+0.4V) Figure 17. Input Offset Voltage vs Supply Voltage (VICM=VDD, EK=-VDD/2) (*)The above characteristics are measurements of typical sample, they are not guaranteed. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 8/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C 10.0 10.0 7.5 7.5 5.0 5.0 Input Offset Voltage [mV] Input Offset Voltage [mV] Typical Performance Curves - Continued 2.5 0.0 1.8V 5.5V 3.0V -2.5 -5.0 2.5 0.0 -2.5 -40°C -5.0 -7.5 -7.5 -10.0 -10.0 -50 -25 0 25 50 75 100 -1 125 0 Ambient Temperature [°C] 2 3 Figure 19.Input Offset Voltage vs Input Voltage (VDD=1.8V) 10.0 7.5 7.5 5.0 5.0 Input Offset Voltage [mV] 10.0 2.5 0.0 1 Input Voltage [V] Figure 18.Input Offset Voltage vs Ambient Temperature (VICM=VDD, EK=-VDD/2) Input Offset Voltage [mV] 125°C 25°C 125°C 25°C -2.5 -40°C -5.0 2.5 0.0 25°C 125°C -2.5 -40°C -5.0 -7.5 -7.5 -10.0 -10.0 -1 0 1 2 3 -1 4 0 1 2 3 4 5 6 Input Voltage [V] Input Voltage [V] Figure 20. Input Offset Voltage vs Input Voltage (VDD=3.0V) Figure 21. Input Offset Voltage vs Input Voltage (VDD=5.5V) 7 (*)The above characteristics are measurements of typical sample, they are not guaranteed. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 9/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Typical Performance Curves - Continued 160 160 125°C Large Signal Voltage Gain [dB] Large Signal Voltage Gain [dB] 25°C 120 -40°C 80 40 5.5V 120 3.0V 80 40 0 0 1 2 3 4 5 -50 6 -25 Supply Voltage [V] 0 25 50 75 100 125 Ambient Temperature [°C] Figure 22. Large Signal Voltage Gain vs Supply Voltage Figure 23. Large Signal Voltage Gain vs Ambient Temperature 120 120 Common-mode Rejection Ratio [dB] Common-mode Rejection Ratio [dB] 1.8V 100 25°C 80 60 125°C -40°C 40 20 100 5.5V 80 60 3.0V 1.8V 40 20 0 0 1 2 3 4 5 -50 6 Supply Voltage [V] -25 0 25 50 75 100 125 Ambient Temperature [°C] Figure 24. Common-mode Rejection Ratio vs Supply Voltage Figure 25. Common-mode Rejection Ratio vs Ambient Temperature (*)The above characteristics are measurements of typical sample, they are not guaranteed. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 10/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Typical Performance Curves - Continued 3.0 120 2.5 Slew Rate L-H [V/μs] Power Supply Rejection Ratio [dB] 140 100 80 60 2.0 1.5 5.5V 1.0 40 3.0V 0.5 20 1.8V 0 0.0 -50 -25 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125 Ambient Temperature [°C] Ambient Temperature [°C] Figure 27. Slew Rate L-H vs Ambient Temperature Figure 26. Power Supply Rejection Ratio vs Ambient Temperature 2.0 200 100 Phase 80 160 60 120 1.0 5.5V 40 Gain 80 0.5 40 20 3.0V 1.8V 0.0 -50 -25 0 25 50 75 100 125 0 1.E+02 102 1.E+03 103 1.E+04 104 1.E+05 105 1.E+06 106 0 1.E+07 107 Frequency [Hz] Ambient Temperature [°C] Figure 28. Slew Rate H-L vs Ambient Temperature Figure 29. Voltage Gain・Phase vs Frequency (VDD=3.0V) (*)The above characteristics are measurements of typical sample, they are not guaranteed. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 11/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Phase [deg] Voltage Gain [dB] Slew Rate H-L [V/μs] 1.5 Datasheet BU7241YG-C Application Information NULL method condition for Test Circuit 1 VDD, VSS, EK, VICM, VRL Unit:V Parameter Input Offset Voltage VF S1 S2 S3 VDD VSS EK VICM VRL Calculation VF1 ON ON OFF 3 0 -1.5 3 - 1 ON ON ON 3 0 1.5 1.5 2 ON ON OFF 3 0 - 3 ON ON OFF - 4 VF2 Large Signal Voltage Gain VF3 VF4 Common-mode Rejection Ratio (Input Common-mode Voltage Range) VF5 VF6 Power Supply Rejection Ratio VF7 1.8 5.5 0 -0.5 -2.5 0 -1.5 3 -0.9 0 -2.75 - Calculation |VF1| 1+RF/RS 1. Input Offset Voltage (VIO) VIO = 2. Large Signal Voltage Gain (AV) Av = 20Log ΔEK × (1+RF/RS) [dB] |VF2-VF3| [V] 3. Common-mode Rejection Ratio (CMRR) CMRR = 20Log ΔVICM × (1+RF/RS) [dB] |VF4 - VF5| 4. Power Supply Rejection Ratio (PSRR) PSRR = 20Log ΔVDD × (1+ RF/RS) [dB] |VF6 - VF7| 0.1μF RF=50kΩ SW1 RS=50Ω 500kΩ VDD 15V EK RI=1MΩ 0.01μF VOUT 500kΩ 0.015μF 0.015μF DUT SW3 RS=50Ω 1000pF RI=1MΩ RL VICM 50kΩ NULL SW2 V VF VRL -15V VSS Figure 30. Test Circuit 1 www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 12/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Application Information - continued Switch Condition for Test Circuit 2 SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 SW9 SW10 SW11 SW12 Parameter 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 Gain Bandwidth Product 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 SW3 R2=100kΩ SW4 ● VDD － SW1 SW2 ＋ SW5 SW6 SW8 SW7 SW9 SW10 SW11 SW12 R1=1kΩ VSS RL CL VIN- VIN+ VRL VOUT Figure 31. Test Circuit 2 Output Voltage Input Voltage SR = Δ V / Δ t 3V 3V 90% ΔV 3 V P- P 10% 0V 0V t Input Wave Output Wave Figure 32. Slew Rate www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 t Δt Input and Output Wave 13/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Application Information – continued 1. Unused Circuits When there are unused op-amps, it is recommended that they are connected as in Figure 33, setting the non-inverting input terminal to a potential within the Input Common-mode Voltage Range (VICM). VDD Keep this potential in VICM VICM VSS Figure 33. Example of Application Circuit for Unused Op-amp 2. Input Voltage Applying VSS-0.3V to VDD+0.3V to the input terminal is possible without causing deterioration of the electrical characteristics or destruction. However, this does not ensure normal circuit operation. Please note that the circuit operates normally only when the input voltage is within the common mode input voltage range of the electric characteristics. 3. Power Supply (Single/Dual) The operational amplifier operates when the voltage supplied is between VDD and VSS. Therefore, the single supply operational amplifiers can be used as dual supply operational amplifiers as well. 4. Latch up Be careful of input voltage that exceed the VDD and VSS. When CMOS device have sometimes occur latch up and protect the IC from abnormaly noise. 5. Decoupling Capacitor Insert the decoupling capacitance between VDD and VSS, for stable operation of operational amplifier. 6. Start-up the Supply Voltage This IC has ESD protection diode between input and VDD,VSS terminals. When apply the voltage to input terminal before start up the supply voltage then the Current flow into or out from input terminal via VDD or VSS terminal. The current is depending on applied voltage. This phenomena causes breakdown the IC or malfunction. Therefore, give a special consideration to input terminal protection and start up order of supply voltage. 7. Output Capacitor If a large capacitor is connected between the output pin and VSS pin, current from the charged capacitor will flow into the output pin and may destroy the IC when the VDD pin is shorted to ground or pulled down to 0V. Use a capacitor smaller than 0.1uF between output pin and VSS pin. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 14/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Application Information – continued 8. Oscillation by Output Capacitor Please pay attention to the oscillation by output capacitor and in designing an application of negative feedback loop circuit with these ICs. When the amplifier is used with a full feedback loop, a capacitive load must be up to 100pF because there is a risk of oscillation. The following figure shows the frequency characteristics for each load capacitance. 20 50 40 150pF Voltage Gain [dB] Voltage Gain [dB] 10 30 20 5pF 0 -10 150pF 10 100pF 100pF 5pF 0 -20 104 105 106 103 107 105 106 Frequency [Hz] Figure 34. Voltage Gain vs Frequency (VDD=3.0V, Gv=40dB) Figure 35. Voltage Gain vs Frequency (VDD=3.0V, Gv=0dB) 70 70 60 60 50 50 40 30 20 10 0 104 Frequency [Hz] Phase Margin [deg] Phase Margin [deg] 103 107 40 30 20 10 10 100 1000 Load Capacitance [pF] 10 100 1000 Load Capacitance [pF] Figure 36. Phase Margin vs Load Capacitance (VDD=3.0V, Gv=40dB) www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 0 15/22 Figure 37. Phase Margin vs Load Capacitance (VDD=3.0V, Gv=0dB) TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Application Information – continued 8. Oscillation by Output Capacitor The following figure shows an improved circuit example of the frequency characteristics due to the output capacitor. Figure 38. Improvement circuit example 1 Figure 39. Improvement circuit example 2 20 20 RL=0Ω RL=0Ω 10 RL=500Ω RL=1kΩ 0 -10 Voltage Gain [dB] Voltage Gain [dB] 10 RL=500Ω RL=1kΩ 0 -10 -20 -20 103 104 105 106 107 103 104 105 106 107 Frequency [Hz] Frequency [Hz] Figure 40. Voltage Gain vs Frequency (VDD=3.0V,Gv=0dB,CL=100pF,Circuit:Figure38) Figure 41. Voltage Gain vs Frequency (VDD=3.0V,Gv=0dB,CL=100pF,Circuit:Figure39) www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 16/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Examples of Circuit ○Voltage Follower Voltage gain is 0dB. VDD 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 OUT=IN VSS Figure 42. Voltage Follower Circuit ○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 VDD R1 IN OUT OUT=-(R2/R1)・IN This circuit has input impedance equal to R1. VSS Figure 43. Inverting Amplifier Circuit ○Non-inverting Amplifier R1 R2 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. VDD OUT IN 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. VSS Figure 44. Non-inverting Amplifier Circuit www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 17/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C 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 45(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 The derating curve in Figure 45(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 45(c) shows an example of the derating curve for BU7241YG-C. Power Dissipation of LSI [W] Power Dissipation of IC PDmax θJA=(Tjmax-TA) / PD °C/W Ambient Temperature TA [ °C ] P2 θJA2 < θJA1 θJA2 P1 Tjmax θJA1 Chip Surface Temperature TJ [ °C ] 0 25 50 75 100 125 150 Ambient Temperature TA [ °C ] (a) Thermal Resistance (b) Derating Curve Power Dissipation [W] 0.8 0.6 (Note 9) 0.4 0.2 0.0 0 50 100 125 150 Ambient Temperature [°C] (c)BU7241YG-C (Note 9) 5.4 Unit mW/°C When using the unit above TA=25°C, subtract the value above per Celsius degree. Power dissipation is the value when FR4 glass epoxy board 70mm×70mm×1.6mm (copper foil area less than 3%) is mounted Figure 45. Thermal Resistance and Derating Curve www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 18/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Operational Notes 1. Reverse Connection of Power Supply Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when connecting the power supply, such as mounting an external diode between the power supply and the IC’s power supply pins. 2. Power Supply Lines Design the PCB layout pattern to provide low impedance supply lines. Separate the ground and supply lines of the digital and analog blocks to prevent noise in the ground and supply lines of the digital block from affecting the analog block. Furthermore, connect a capacitor to ground at all power supply pins. Consider the effect of temperature and aging on the capacitance value when using electrolytic capacitors. 3. Ground Voltage Ensure that no pins are at a voltage below that of the ground pin at any time, even during transient condition. 4. Ground Wiring Pattern When using both small-signal and large-current ground traces, the two ground traces should be routed separately but connected to a single ground at the reference point of the application board to avoid fluctuations in the small-signal ground caused by large currents. Also ensure that the ground traces of external components do not cause variations on the ground voltage. The ground lines must be as short and thick as possible to reduce line impedance. 5. Thermal Consideration Should by any chance the power dissipation rating be exceeded the rise in temperature of the chip may result in deterioration of the properties of the chip. The absolute maximum rating of the PD stated in this specification is when the IC is mounted on a 70mm x 70mm x 1.6mm glass epoxy board. In case of exceeding this absolute maximum rating, increase the board size and copper area to prevent exceeding the PD rating. 6. Recommended Operating Conditions These conditions represent a range within which the expected characteristics of the IC can be approximately obtained. The electrical characteristics are guaranteed under the conditions of each parameter. 7. Inrush Current When power is first supplied to the IC, it is possible that the internal logic may be unstable and inrush current may flow instantaneously due to the internal powering sequence and delays, especially if the IC has more than one power supply. Therefore, give special consideration to power coupling capacitance, power wiring, width of ground wiring, and routing of connections. 8. 9. Operation Under Strong Electromagnetic Field Operating the IC in the presence of a strong electromagnetic field may cause the IC to malfunction. Testing on Application Boards When testing the IC on an application board, connecting a capacitor directly to a low-impedance output pin may subject the IC to stress. Always discharge capacitors completely after each process or step. The IC’s power supply should always be turned off completely before connecting or removing it from the test setup during the inspection process. To prevent damage from static discharge, ground the IC during assembly and use similar precautions during transport and storage. 10. Inter-pin Short and Mounting Errors Ensure that the direction and position are correct when mounting the IC on the PCB. Incorrect mounting may result in damaging the IC. Avoid nearby pins being shorted to each other especially to ground, power supply and output pin. Inter-pin shorts could be due to many reasons such as metal particles, water droplets (in very humid environment) and unintentional solder bridge deposited in between pins during assembly to name a few. 11. Unused Input Pins Input pins of an IC are often connected to the gate of a MOS transistor. The gate has extremely high impedance and extremely low capacitance. If left unconnected, the electric field from the outside can easily charge it. The small charge acquired in this way is enough to produce a significant effect on the conduction through the transistor and cause unexpected operation of the IC. Unless otherwise specified, unused input pins should be connected to the power supply or ground line. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 19/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Operational Notes – continued 12. Regarding the Input Pin of the IC In the construction of this IC, P-N junctions are inevitably formed creating parasitic diodes or transistors. The operation of these parasitic elements can result in mutual interference among circuits, operational faults, or physical damage. Therefore, conditions which cause these parasitic elements to operate, such as applying a voltage to an input pin lower than the ground voltage should be avoided. Furthermore, do not apply a voltage to the input pins when no power supply voltage is applied to the IC. Even if the power supply voltage is applied, make sure that the input pins have voltages within the values specified in the electrical characteristics of this IC. 13. Ceramic Capacitor When using a ceramic capacitor, determine the dielectric constant considering the change of capacitance with temperature and the decrease in nominal capacitance due to DC bias and others. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 20/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Physical Dimension, Tape and Reel Information Package Name www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 SSOP5 21/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Datasheet BU7241YG-C Ordering Information B U 7 2 4 1 Part Number BU7241YG Y G - Package G : SSOP5 C TR Product Rank C: Automotive Packaging and forming specification TR: Embossed tape and reel Line-up Topr Channels -40°C to +125°C 1ch Package SSOP5 Orderable Part Number Reel of 3000 BU7241YG-CTR Marking Diagram SSOP5 (TOP VIEW) Part Number Marking LOT Number Product Name BU7241Y Package Type Marking SSOP5 XQ G Revision History Date Revision 17.Mar.2015 001 New Release 09.Mar.2016 002 Application Information : Addition and move some from Operational Notes Absolute Maximum Ratings : Addition (Split Supply) 003 Addition : Page 3 note7(IB,VOH,VOL,AV,ISOURCE,ISINK) Correction : Page 14 Figure 3733 Correction : Page 18 Figure 3645 Deletion : Page 22 “Land Pattern” data 11.Jul.2016 www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 Changes 22/22 TSZ02201-0GLG0G200740-1-2 11.Jul.2016 Rev.003 Notice Precaution on using ROHM Products 1. (Note 1) If you intend to use our Products in devices requiring extremely high reliability (such as medical equipment , aircraft/spacecraft, nuclear power controllers, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific Applications. (Note1) Medical Equipment Classification of the Specific Applications JAPAN USA EU CHINA CLASSⅢ CLASSⅡb CLASSⅢ CLASSⅢ CLASSⅣ CLASSⅢ 2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. Our Products are not designed under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4. The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation depending on ambient temperature. When used in sealed area, confirm that it is the use in the range that does not exceed the maximum junction temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice-PAA-E © 2015 ROHM Co., Ltd. All rights reserved. Rev.003 Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1. Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label A two-dimensional barcode printed on ROHM Products label is for ROHM’s internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign trade act, please consult with ROHM in case of export. Precaution Regarding Intellectual Property Rights 1. All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. 2. ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the Products with other articles such as components, circuits, systems or external equipment (including software). 3. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to manufacture or sell products containing the Products, subject to the terms and conditions herein. Other Precaution 1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 4. The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice-PAA-E © 2015 ROHM Co., Ltd. All rights reserved. Rev.003 Datasheet General Precaution 1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents. ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny ROHM’s Products against warning, caution or note contained in this document. 2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s representative. 3. The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. Notice – WE © 2015 ROHM Co., Ltd. All rights reserved. Rev.001 Datasheet BU7241YG-C - Web Page Buy Distribution Inventory Part Number Package Unit Quantity Minimum Package Quantity Packing Type Constitution Materials List RoHS BU7241YG-C SSOP5 3000 3000 Taping inquiry Yes