Low Power Ground Sense Operational Amplifier - BU7421SGUltra Low Power CMOS Op-Amp BU7265/BU7205/BU7271/BU7245 family (Input-Output Full Swing) and BU7411 / BU7421 / BU7475 (ground sense) are monolithic IC. Supply current is very small (BU7265/BU7411 family: 0.35[µA], BU7421 family: 8.5[µA], BU7271 family: 8.6[µA]), and VDD range is +1.6[V] ~ +5.5[V] (BU7411 family: single supply), so operable with low voltage. It’s suitable for applications of portable equipments and battery movements.
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| * This product is a STANDARD grade product and not recommend for on-vehicle devices. | ||||
| Grade | Standard |
| Power supply(Min.)[V](+5V=5, +/-5V=10) | 1.7 |
| Power supply(Max.)[V](+5V=5, +/-5V=10) | 5.5 |
| Channel | 1 |
| Circuit Current(Typ.)[mA] | 0.0085 |
| Input Offset Voltage(Max.)[mV] | 6.0 |
| Input Bias Current(Typ.)[nA] | 0.0010 |
| Slew Rate(Typ.)[V/µS] | 0.05 |
| Input Voltage Range [V] | VSS to VDD-1.2 |
| Output Voltage Range [V] | VSS+0.1 to VDD-0.1 |
| Voltage gain(Typ.)[dB] | 100.0 |
| Output current(Typ.)[mA] | 4.0 |
| CMRR(Typ.)[dB] | 60.0 |
| PSRR(Typ.)[dB] | 80.0 |
| GBW(Typ.)[MHz] | 0.09 |
| Operating Temperature (Min.)[°C] | -40 |
| Operating Temperature (Max.)[°C] | 105 |
- ・Ultra Low Power : 8.5[μA]
・High large signal voltage gain
・Wide temperature range
-40[℃] ～ +105[℃]
・Low input bias current 1[pA] (Typ.)
・Internal ESD protection
Human body model (HBM) ±4000 [V] (Typ.)
・Internal phase compensation
・Low operating supply voltage
+1.7[V] ～ +5.5[V] (single supply)
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For Full Swing Low Voltage Operation CMOS Operational Amplifiers, Ultra Low Power CMOS Operational Amplifiers, Ground Sense Low Voltage Operation CMOS Operational Amplifiers
This application note explains the general terms and basic techniques that are necessary for configuring application circuits with op-amps and comparators. Refer to this note for guidance when using op-amps and comparators.
The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.
For ICs