High Speed with Low Voltage
CMOS Operational Amplifiers
Input-Output Full Swing
BU7291G,BU7291SG,BU7255HFV,BU7255SHFV
Ground sense
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG
BU7485G,BU7485SG,BU5281G,BU5281SG
●Description
Low Voltage with High Speed CMOS Op-Amp integrates one independent output full swing Op-Amps and phase
compensation capacitors on a single chip. Especially, this series is operable with low voltage, low supply current, high speed
and low input bias current.
・Input-Output Full Swing
BU7291 family, BU7255 family
・Ground sense
BU7495 family, BU7481 family,
BU7485 family, BU5281 family
●Features
1) Low operating supply voltage
+2.4 [V] ~ +5.5 [V] (single supply): BU7291 family
BU7255 family
+1.8 [V] ~ +5.5 [V] (single supply): BU7495 family
BU7481 family
BU5281 family
+3.0 [V] ~ +5.5 [V] (single supply): BU7485 family
2) High large signal voltage gain
3) Internal ESD protection
Human body model (HBM) ±4000 [V] (Typ.)
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) The voltage difference between inverting input and non-inverting input is the differential input voltage.
Then input terminal voltage is set to more than VSS.
High Level Output Voltage VOH 25℃ VDD-0.1- - V RL=10[kΩ]
Low Level Output Voltage VOL 25℃ - - VSS+0.1 V RL=10[kΩ]
Large Signal Voltage Gain AV 25℃ 70 105 - dB RL=10[kΩ]
Input Common-mode
Voltage Range
Vicm 25℃ 0 -3 V VSS ~ VDD
Common-mode Rejection Ratio CMRR 25℃ 40 60 - dB -
Power Supply Rejection Ratio PSRR 25℃ 45 80 - dB -
Output Source Current
Output Sink Current
(*4)
IOH 25℃ 5 8 - mA VDD-0.4[V]
(*4)
IOL 25℃ 9 16 - mA VSS+0.4[V]
Slew Rate SR 25℃ - 3.0 - V/μs CL=25[pF]
Gain Band width FT 25℃ - 2.8 - MHz CL=25[pF], AV=40[dB]
Phase Margin θ 25℃ - 50 - ° CL=25[pF], AV=40[dB]
Total Harmonic Distortion THD 25℃ - 0.03 - % VOUT=0.8[Vp-p],f=1[kHz]
(*2) Absolute value
(*3) Full range BU7291: Ta=-40[℃]~+85[℃] BU7291S: Ta=-40[℃]~+105[℃]
(*4) 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.
High Level Output Voltage VOH 25℃ VDD-0.1- - V RL=10[kΩ]
Low Level Output Voltage VOL 25℃ - - VSS+0.1 V RL=10[kΩ]
Large Signal Voltage Gain AV 25℃ 60 105 - dB RL=10[kΩ]
Input Common-mode
Voltage Range
Vicm 25℃0 - 3 V VSS ~ VDD
Common-mode Rejection Ratio CMRR 25℃ 40 60 - dB -
Power Supply Rejection Ratio PSRR 25℃ 45 80 - dB -
Output Source Current
Output Sink Current
(*7)
IOH 25℃ 2 4 -mA VDD - 0.4[V]
(*7)
IOL 25℃ 4 8 -mA VSS + 0.4[V]
Slew Rate SR 25℃ - 3.4 - V/μs CL=25[pF]
Gain Band width FT 25℃ - 4 - MHz CL=25[pF], AV=40[dB]
Phase Margin θ 25℃ - 40 - ° CL=25[pF], AV=40[dB]
(*5) Absolute value
(*6) Full range BU7255: Ta=-40[℃]~+85[℃] BU7255S: Ta=-40[℃]~+105[℃]
(*7) 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.
(*8) Absolute value
(*9) Full range BU7495: Ta=-40[℃]~+85[℃] BU7495S: Ta=-40[℃]~+105[℃]
(*10) 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
(*11) Absolute value
(*12) Full range BU7481: Ta=-40[℃]~+85[℃] BU7481S: Ta=-40[℃]~+105[℃]
(*13) 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.
(*14) Absolute value
(*15) Full range BU7485: Ta=-40[℃]~+85[℃] BU7485S: Ta=-40[℃]~+105[℃]
(*16) 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.
High Level Output Voltage VOH 25℃ VDD-0.1- - V RL=10[kΩ]
Low Level Output Voltage VOL 25℃ - - VSS+0.1 V RL=10[kΩ]
Large Signal Voltage Gain AV 25℃ 70 110 - dB RL=10[kΩ]
Input Common-mode
Voltage Range
Vicm 25℃ 0 -1.8 V VSS ~ VDD - 1.2[V]
Common-mode Rejection Ratio CMRR 25℃ 45 60 - dB -
Power Supply Rejection Ratio PSRR 25℃ 60 80 - dB -
Output Source Current
Output Sink Current
(*19)
IOH 25℃ 5 8 - mA VDD-0.4[V]
(*19)
IOL 25℃ 10 16 - mA VSS+0.4[V]
Slew Rate SR 25℃ - 2.0 - V/μs CL=25[pF]
Gain Band width FT 25℃ - 3 - MHz CL=25[pF], AV=40[dB]
Phase Margin θ 25℃ - 40 - ° CL=25[pF], AV=40[dB]
1/2
- 18 - nV/(Hz)
AV=40[dB], f=1[kHz]
Input Referred Noise Voltage Vin 25℃
- 3.2 -μVrms AV=40[dB], DINAUDIO
Total Harmonic Distortion THD 25℃ - 0.003- % VOUT=0.4[Vp-p], f=1[kHz]
(*17) Absolute value
(*18) Full range BU5281: Ta=-40[℃]~+85[℃] BU5281S: Ta=-40[℃]~+105[℃]
(*19) 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.