Datasheet Operational Amplifiers High Speed Operational Amplifiers BA3472YF-LB General Description Key Specifications This is the product guarantees long time support in Industrial market. BA3474YF integrates two independent Op-amps on a single chip. These Op-Amps can operate from +3V to +36V (single power supply) with a high slew rate (10V/μs) and high-gain bandwidth (4MHz) characteristics. Wide Operating Supply Voltage: Single supply +3.0V to +36.0V Dual supply ±1.5V to ±18.0V Wide Temperature Range: -40°C to +125°C Input Offset Voltage: 10mV (Max) Low Input Offset Current: 6nA (Typ) Low Input Bias Current: 100nA (Typ) Wide Output Voltage Range: VEE+0.3V to VCC-1.0V(Typ) (VCC-VEE=30V) Slew Rate: 10V/µs(Typ) Gain Band Width: 4MHz(Typ) Features Long Time Support a Product for Industrial Applications High Slew Rate Single or dual power supply operation Wide operating supply voltage High open-loop voltage gain Common-mode Input Voltage Range includes ground level, allowing direct ground sensing Wide output voltage range Packages Application Industrial Equipment Current sense application Buffer application amplifier Active filter W(Typ) x D(Typ) x H(Max) 5.00mm x 6.20mm x 1.71mm SOP8 Simplified schematic VCC VCC -IN VIN- VOUT OUT +IN VIN+ VEE VEE Figure 1. Simplified schematic (one channel only) ○Product structure：Silicon monolithic integrated circuit www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･14･00 ○This product is not designed protection against radioactive rays. 1/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet Pin Configuration(TOP VIEW) SOP8 OUT1 1 -IN1 2 +IN1 3 VEE Pin No. Symbol 1 OUT1 2 -IN1 3 +IN1 4 VEE 5 +IN2 6 -IN2 7 OUT2 8 VCC 8 VCC 7 OUT2 CH1 - + CH2 + - 4 6 -IN2 5 +IN2 Ordering Information B A 3 4 7 2 Y F - LB H2 Product class LB for Industrial applications Packaging and forming specification H2: Embossed tape and reel (SOP8) Package F : SOP8 Part Number BA3472YF Line-up Topr -40°C to +125°C Package SOP8 Reel of 250 Orderable Part Number BA3472YF-LBH2 Absolute Maximum Ratings (TA=25℃) Parameter Symbol Supply Voltage Power dissipation Ratings VCC-VEE PD SOP8 Unit +36 V 1.075(Note 1,2) W V Differential Input Voltage(Note 3) VID +36 Input Common-mode Voltage Range VICM (VEE-0.3) to VEE+36 V II mA Input Current(Note 4) Operating Supply Voltage Vopr Operating Temperature Topr -10 +3.0V to +36.0V (±1.5V to ±18.0V) -40 to +125 Tstg -55 to +150 ℃ TJmax +150 ℃ Storage Temperature Maximum Junction Temperature V ℃ (Note 1) To use at temperature above TA=25℃ reduce 8.6mW/℃. (Note 2) Mounted on a FR4 glass epoxy 4 layers PCB 70mm×70mm×1.6mm (occupied copper area: 70mm×70mm). (Note 3) The voltage difference between inverting input and non-inverting input is the differential input voltage. Then input terminal voltage is set to more than VEE. (Note 4) An excessive input current will flow when input voltages of less than VEE-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 © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 2/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet Electrical Characteristics ○BA3472YF-LB (Unless otherwise specified VCC=+15V, VEE=-15V) Limits Temperature Parameter Symbol range Min. Typ. Max. Input Offset Voltage (Note 5) Input Offset Current (Note 5) Input Bias Current (Note 6) Supply Current Maximum Output Voltage(High) Maximum Output Voltage(Low) Large Signal Voltage Gain Input Common-mode Voltage Range Common-mode Rejection Ratio Power Supply Rejection Ratio Output Source Current (Note 7) Output Sink Current (Note 7) Gain Band Width Slew Rate Channel Separation Vio - Unit 10 full range Condition Vicm=0V, OUT=0V mV VCC=5V VEE=0V nA Vicm=0V, OUT=0V nA Vicm=0V, OUT=0V mA RL=∞ - - 10 25℃ - 6 75 full range - - 100 25℃ - 100 150 full range - - 200 25℃ - 4 5 full range - - 5.5 25℃ 3.7 4 - full range 3.5 - - 25℃ 13.7 14 - full range 13.5 - - 25℃ 13.5 - - RL=2kΩ 25℃ - 0.1 0.3 full range - - 0.6 VCC=5V VEE=0V 25℃ - -14.7 -14.3 full range - - -14.0 25℃ - - -13.5 25℃ 80 100 - full range 70 - - 25℃ 0 - VCC-2.0 full range 0 - VCC-2.6 CMRR 25℃ 60 97 PSRR 25℃ 60 25℃ Iio Ib ICC VOH VCC=5V VEE=0V Vicm=0V OUT=VCC/2 RL=2kΩ V RL=10kΩ VOL RL=2kΩ V RL=10kΩ Av dB RL≧2kΩ, OUT=±10V V VCC=5V VEE=0V - dB OUT=0V 97 - dB Vicm=0V, OUT=0V 10 30 mA full range 10 - - VCC=5V VEE=0V 25℃ 20 30 mA VCC=5V VEE=0V Vicm Isource Isink GBW full range 20 - - 25℃ - 4 - 25℃ - 10 - full range 5 - - 25℃ - 120 - SR CS RL=2kΩ MHz V/μs OUT=VCC/2 IN+=1V IN-=0V OUT=0V Only 1ch is short circuit IN+=0V IN-=1V OUT=5V, Only 1ch is short circuit - Av=1, IN=-10V to +10V, RL=2kΩ dB - (Note 5) Absolute value (Note 6) Current direction: Since first input stage is composed with PNP transistor, input bias current flows out of IC. (Note 7) Under high temperatures, please consider the power dissipation when selecting the output current. When the output terminal is continuously shorted the output current reduces the internal temperature by flushing. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 3/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB 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 Power supply voltage (VCC-VEE) 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℃ (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 Circuit current (ICC) Indicates the current that flows within the IC under specified no-load conditions. 2.5 High level output voltage/low level output voltage (VOH/VOL) Indicates the voltage range of the output under specified load condition. It is typically divided into high-level output voltage and low-level output voltage. High-level output voltage indicates the upper limit of output voltage while Low-level output voltage 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 fluctuation) / (Input offset fluctuation) 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) www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 4/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet 2.10 Output source current/ output sink current (IOH / IOL) 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 Gain Band Width (GBW) The product of the open-loop voltage gain and the frequency at which the voltage gain decreases 6dB/octave. 2.12 Slew rate (SR) Indicates the ratio of the change in output voltage with time when a step input signal is applied. 2.13 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･00 5/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet Typical Performance Curves ○BA3472YF-LB 6 1.0 SUPPLY CURRENT [mA] POWER DISSIPATION [mW] 1.2 BA3472YF-LB 0.8 0.6 0.4 0.2 0.0 5 -40℃ 25℃ 4 125℃ 3 2 1 0 0 25 50 75 100 125 150 0 5 15 20 25 30 35 40 SUPPLY VOLTAGE [V] AMBIENT TEMPERATURE [℃] Figure 2. Derating Curve Figure 3. Supply Current - Supply Voltage 40 6 35 5 30V OUTPUT VOLTAGE[V] SUPPLY CURRENT [mA] 10 36V 4 3 3V 5V 2 1 30 -40℃ 25 25℃ 20 15 125℃ 10 5 0 0 -50 -25 0 25 50 75 0 100 125 150 AMBIENT TEMPERATURE [℃] 10 20 30 40 SUPPLY VOLTAGE[V] Figure 4. Supply Current - Ambient Temperature Figure 5. Maximum Output Voltage(High) - Supply Voltage (RL=10kΩ) (*)The above data is measurement value of typical sample, it is not guaranteed. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 6/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet ○BA3472YF-LB 1. 0 40 OUTPUT VOLTAGE[V] OUTPUT VOLTAGE[V] 35 30 36V 25 30V 20 15 10 5V 0. 8 0. 6 0. 4 125℃ 25℃ -40℃ 0. 2 3V 5 0. 0 0 -50 -25 0 25 50 75 0 100 125 150 AMBIENT TEMPERATURE [℃] 20 30 40 SUPPLY VOLTAGE[V] Figure 6. Figure 7. Maximum Output Voltage(High) Maximum Output Voltage(Low) - Ambient Temperature (RL=10kΩ) - Supply Voltage (RL=10kΩ) 100. 0 OUTPUT SOURCE CURRENT[mA] 1. 0 0. 8 OUTPUT VOLTAGE[V] 10 0. 6 0. 4 5V 36V 3V 30V 0. 2 0. 0 -50 -25 0 25 50 75 100 125 150 10.0 125℃ 25℃ 1. 0 -40℃ 0. 1 0 1 2 3 4 5 AMBIENT TEMPERATURE [℃] VCC-OUT[V] Figure 8. Figure 9. Output Source Current - (VCC-OUT) (VCC/VEE=5V/0V) Maximum Output Voltage(Low) - Ambient Temperature (RL=10kΩ) 6 (*)The above data is measurement value of typical sample, it is not guaranteed. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 7/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet ○BA3472YF-LB 5 INPUT OFFSET VOLTAGE[mV] -40℃ 25℃ 125℃ 10.0 1. 0 4 3 2 -40℃ 25℃ 1 0 -1 125℃ -2 -3 -4 -5 0. 1 0 1 2 3 4 5 -20 6 OUT-VEE[V] -15 -10 -5 0 5 10 15 COMMON MODE INPUT VOLTAGE[V] Figure 10. Output Source Current - (OUT-VEE) (VCC/VEE=5V/0V) Figure 11. Input Offset Voltage - Common Model Input Voltage (VCC/VEE=15V/-15V) 3 3 INPUT OFFSET VOLTAGE[mV] INPUT OFFSET VOLTAGE[mV] OUTPUT SINK CURRENT[mA] 100. 0 2 -40℃ 25℃ 1 0 125℃ -1 -2 -3 2 30V 36V 1 5V 0 -1 -2 -3 0 5 10 15 20 25 30 35 40 -50 -25 0 25 50 75 100 125 150 AMBIENT TEMPERATURE[℃] SUPPLY VOLTAGE[V] Figure 12. Input Offset Voltage - Supply voltage Figure 13. Input Offset Voltage - Ambient Temperature (*)The above data is measurement value of typical sample, it is not guaranteed. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 8/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet ○BA3472YF-LB 100 100 25℃ -40℃ 80 INPUT BIAS CURRENT[nA] INPUT BIAS CURRENT[nA] 36V 60 125℃ 40 20 30V 80 60 5V 40 3V 20 0 0 0 5 10 15 20 25 30 35 -50 40 SUPPLY VOLTAGE[V] 0 25 50 75 100 125 150 AMBIENT TEMPERATURE[℃] Figure 14. Input Bias Current - Supply Voltage Figure 15. Input Bias Current - Ambient Temperature 150 LARGE SIGNAL VOLTAGE GAIN[dB] 150 LARGE SIGNAL VOLTAGE GAIN[dB] -25 140 130 -40℃ 25℃ 120 110 125℃ 100 90 80 70 60 140 130 10V 30V 120 110 36V 100 50 90 80 70 60 50 5 10 15 20 25 30 35 40 -50 SUPPLY VOLTAGE[V] -25 0 25 50 75 100 125 150 AMBIENT TEMPERATURE[℃] Figure 16. Large Signal Voltage Gain - Supply Voltage Figure 17. Large Signal Voltage Gain - Ambient Temperature (*)The above data is measurement value of typical sample, it is not guaranteed. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 9/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet ○BA3472YF-LB 140 150 130 140 120 130 120 110 110 CMRR[dB] CMRR[dB] 125℃ 100 90 25℃ 80 -40℃ 90 80 70 70 60 60 50 50 40 40 0 5 10 15 20 25 30 35 5V -50 40 SUPPLY VOLTAGE[V] 14 14 SLEW RATE(RISE)[V/μs] SLEW RATE(RISE)[V/μs] 16 -40℃ 25℃ 8 125℃ 6 0 25 50 75 100 125 150 Figure 19. Common Mode Rejection Ratio - Ambient Temperature 16 10 -25 AMBIENT TEMPERATURE[℃] Figure 18. Common Mode Rejection Ratio - Supply Voltage 12 36V 30V 100 4 36V 30V 12 10 2 8 15V 6 5V 4 3V 2 0 0 0 5 10 15 20 25 30 35 40 -50 SUPPLY VOLTAGE[V] -25 0 25 50 75 100 125 150 AMBIENT TEMPERATURE[℃] Figure 20. Slew Rate L-H - Supply Voltage (RL=10kΩ) Figure 21. Slew Rate L-H Ambient Temperature (RL=10kΩ) (*)The above data is measurement value of typical sample, it is not guaranteed. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 10/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet ○BA3472YF-LB 50 0 12 GAIN 30 -60 20 -90 10 -120 0 PHASE[deg] VOLTAGE GAIN[dB] -30 -150 INPUT/OUTPUT VOLTAGE[V] 10 PHASE 40 8 6 OUTPUT 4 INPUT 2 0 -2 -4 -6 -8 -10 -10 1 10 100 1000 -180 10000 -12 0 FREQUENCY[kHz] 1 2 3 4 5 6 7 TIME[μs] Figure 22. Voltage Gain・Phase - Frequency (VCC/VEE=+15V/-15V, Av=40dB RL=2kΩ, CL=100pF, Ta=25℃) Figure 23. Input / Output Voltage - Time (VCC/VEE=+15V/-15V, Av=0dB, RL=2kΩ, CL=100pF, Ta=25℃) INPUT/OUTPUT VOLTAGE[mV] 100 80 INPUT 60 40 OUTPUT 20 0 -20 -40 -60 -80 -100 0.0 0.5 1.0 1.5 2.0 2.5 TIME[μs] Figure 24. Input / Output Voltage - Time (VCC/VEE=+15V/-15V, Av=0dB, RL=2kΩ, CL=100pF, Ta=25℃) (*)The above data is measurement value of typical sample, it is not guaranteed. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 11/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 8 BA3472YF-LB Datasheet Application Information NULL method condition for Test circuit1 VCC, VEE, EK, Vicm Unit : V VF Parameter S1 S2 S3 VCC VEE EK Vicm Calculation Input Offset Voltage VF1 ON ON OFF 15 -15 0 0 1 Input Offset Current VF2 OFF OFF OFF 15 -15 0 0 2 VF3 OFF ON VF4 ON OFF OFF 15 -15 0 0 3 ON ON ON 15 -15 +10 0 15 -15 -10 0 ON ON OFF 15 -15 0 -15 15 -15 0 13 ON ON OFF Input Bias Current VF5 Large Signal Voltage Gain VF6 Common-mode Rejection Ratio (Input Common-mode Voltage Range) VF7 VF8 VF9 Power Supply Rejection Ratio VF10 2 -2 0 0 18 -18 0 0 4 5 6 －Calculation－ 1. Input Offset Voltage (Vio) Vio VF1 1+ RF / RS 0.1μF [V] 2. Input Offset Current (Iio) Iio VF2 - VF1 Ri × (1 + RF / RS) RF=50kΩ [A] SW1 0.1μF 500kΩ VCC EK 3. Input Bias Current (Ib) Ib VF4 - VF3 2 × Ri × (1 + RF / RS) RS＝50Ω 500kΩ [A] DUT NULL SW3 4. Large Signal Voltage Gain (Av) ΔEK × (1+ RF/RS) Av 20 × Log VF5 - VF6 15V Ri=10kΩ RS＝50Ω 1000pF Ri=10kΩ V RL Vicm SW2 [dB] -15V VEE 50kΩ 5. Common-mode Rejection Ratio (CMRR) CMRR 20 × Log ΔVicm × (1+ RF/RS) [dB] VF8 - VF7 Figure 25. Test circuit1 (one channel only) 6. Power Supply Rejection Ratio (PSRR) PSRR 20 × Log ΔVcc × (1+ RF/RS) [dB] VF10 - VF9 Switch Condition for Test Circuit 2 SW No. SW 1 SW 2 SW 3 SW 4 SW 5 SW 6 SW 7 SW 8 SW 9 SW 10 SW 11 SW 12 SW 13 SW 14 Supply Current OFF OFF OFF ON OFF ON OFF OFF OFF OFF OFF OFF OFF OFF Maximum Output Voltage High OFF OFF ON OFF OFF ON OFF OFF OFF OFF OFF ON OFF Maximum Output Voltage Low OFF OFF ON OFF OFF ON OFF OFF OFF OFF OFF OFF ON OFF Output Source Current OFF OFF ON OFF OFF ON OFF OFF OFF OFF OFF OFF OFF ON Output Sink Current OFF OFF ON OFF OFF ON OFF OFF OFF OFF OFF OFF OFF ON Slew Rate OFF OFF OFF ON ON ON OFF OFF OFF OFF Gain Bandwidth Product OFF ON OFF OFF ON ON OFF OFF ON ON OFF OFF OFF OFF Equivalent Input Noise Voltage ON OFF OFF OFF ON ON OFF OFF OFF OFF www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 ON OFF OFF OFF 12/18 ON ON OFF OFF OFF TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 VF BA3472YF-LB Datasheet Voltage VH VL Input Voltage Waveform time Voltage 電圧 90% VH ΔV C VL 10% Δt Output Voltage Waveform 出力電圧波形 Figure 27. Slew rate input output wave Figure 26. Test Circuit 2 (each Op-Amp) VCC VCC R1//R2 R1//R2 OTHER CH VEE R1 VIN time 時間 VEE R2 V OUT1 =0.5[Vrms] R1 R2 V OUT2 100×OUT1 CS=20×log OUT2 Figure 28. Test circuit 3(Channel Separation) www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 13/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet Examples of circuit ○Voltage follower Voltage gain is 0dB. VCC 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 OUT=IN IN VEE Figure 29. Voltage follower circuit ○Inverting amplifier 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 VCC R1 OUT=-(R2/R1)・IN IN OUT R1//R2 This circuit has input impedance equal to R1. VEE Figure 30. Inverting amplifier circuit ○Non-inverting amplifier 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. VCC 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. VEE Figure 31. Non-inverting amplifier circuit www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 14/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet 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 32(a) shows the model of the thermal resistance of the package. The equation below shows how to compute for the Thermal resistance (θja), given the ambient temperature (TA), junction temperature (Tj), and power dissipation (Pd). θja = (Tjmax - TA) / Pd ℃/W ・・・・・ (Ⅰ) The Derating curve in Figure 32(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 33(c) shows an example of the derating curve for BA3472YF-LB. PowerLSIの dissipation LSI [W] 消 費 電 力of[W] θja=(Tjmax-TA)/Pd ℃/W Pd (max) θja2 < θja1 P2 Ta [℃] Ta [℃] 周囲温度 Ambient temperature θ' ja2 P1 θ ja2 Tj ' (max) Tj (max) θ' ja1 Chip surface temperature Tj [℃] チップ 表面温度 Tj [℃] Power dissipation Pd [W] 0 消費電力 P [W] 25 50 θ ja1 75 100 125 150 ] [℃] 囲 温 度 Ta [℃Ta Ambient 周 temperature (a) Thermal resistance (b) Derating curve Figure 32. Thermal resistance and derating curve POWER DISSIPATION [mW] 1.2 1.0 BA3472YF-LB 0.8 0.6 0.4 0.2 0.0 0 25 50 75 100 125 150 AMBIENT TEMPERATURE [℃] (c)BA3472YF-LB 8.6 mW/℃ When using the unit above TA=25℃, subtract the value above per degree℃. Mounted on a FR4 glass epoxy 4 layers PCB 70mm×70mm×1.6mm (occupied copper area：70mm×70mm). Figure 33. Derating curve www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 15/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet VCC Operational Notes 1) Unused circuits When there are unused op-amps, it is recommended that they are connected as in Figure 31, setting the non-inverting input terminal to a potential within the in-phase input voltage range (Vicm). 2) Input voltage Applying VEE +36V to the input terminal is possible without causing deterioration of the electrical characteristics or destruction, regardless of the supply voltage. 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. + Connect to Vicm Vicm VEE Figure 31 Example of application circuit for unused op-amp 3) Power supply (single / dual) The op-amp operates when the voltage supplied is between VCC and VEE. Therefore, the single supply op-amp can be used as dual supply op-amp as well. 4) Power dissipation Pd Using the unit in excess of the rated power dissipation may cause deterioration in electrical characteristics including reduced current capability due to the rise of chip temperature. Therefore, please take into consideration the power dissipation (Pd) under actual operating conditions and apply a sufficient margin in thermal design. Refer to the thermal derating curves for more information. 5) Short-circuit between pins and erroneous mounting Be careful when mounting the IC on printed circuit boards. The IC may be damaged if it is mounted in a wrong orientation or if pins are shorted together. Short circuit may be caused by conductive particles caught between the pins. 6) Operation in a strong electromagnetic field Operating the IC in the presence of a strong electromagnetic field may cause the IC to malfunction. 7) Radiation This IC is not designed to withstand radiation. 8) IC handling Applying mechanical stress to the IC by deflecting or bending the board may cause fluctuations of the electrical characteristics due to piezo resistance effects. 9) Board inspection Connecting a capacitor to a pin with low impedance may stress the IC. Therefore, discharging the capacitor after every process is recommended. In addition, when attaching and detaching the jig during the inspection phase, make sure that the power is turned OFF before inspection and removal. Furthermore, please take measures against ESD in the assembly process as well as during transportation and storage. 10) Output capacitor If a large capacitor is connected between the output pin and GND pin, current from the charged capacitor will flow into the output pin and may destroy the IC when the VCC or VIN pin is shorted to ground or pulled down to 0V. Use a capacitor smaller than 1uF between output and GND. 11) 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. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 16/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet Physical Dimensions Tape and Reel Information Package Name SOP8 Max 5.35 (include. BURR) Drawing: EX112-5001-1 www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 17/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 BA3472YF-LB Datasheet Marking Diagrams SOP8(TOP VIEW) Part Number Marking LOT Number 1PIN MARK Product Name BA3472Y F Package Type Marking SOP8 3472Y Land pattern data PKG Land pitch e Land space MIE SOP8 1.27 4.60 All dimensions in mm Land length Land width ≧ℓ 2 b2 1.10 0.76 b2 e MIE ℓ2 Revision History Date Revision Changes 16.Dec.2013 001 New Release 30.Jan.2014 002 The feature is updated in Page1. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111･15･00 18/18 TSZ02201-0RAR0G200700-1-2 30.Jan.2014 Rev.002 Datasheet Notice Precaution on using ROHM Products 1. If you intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1), 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 (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual ambient 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; if flow soldering method is preferred, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice - SS © 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet 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 QR code 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 our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with ROHM representative 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. ROHM shall not be in any way responsible or liable for infringement of any intellectual property rights or other damages arising from use of such information or data.: 2. 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 information contained in this document. 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 - SS © 2014 ROHM Co., Ltd. All rights reserved. Rev.002 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 © 2014 ROHM Co., Ltd. All rights reserved. Rev.001