High Speed Ground Sense Operational Amplifier

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

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* This is a standard-grade product.
For Automotive usage, please contact Sales.

Product Detail

Part Number | BU7481SG-TR
Status | Recommended
Package | SSOP5
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes


Power Supply (Min.) [V] (+5V=5, ±5V=10)


Power Supply (Max.) [V] (+5V=5, ±5V=10)




Circuit Current (Typ.) [mA/ch]


Input Offset Voltage (Max.) [mV]


Input Bias Current (Typ.) [nA]


Slew Rate (Typ.) [V/µs]


Input Voltage Range [V]

VSS to VDD-1.2

Output Voltage Range [V]

VSS+0.1 to VDD-0.1

Voltage gain (Typ.) [dB]


Output current (Typ.) [mA]


CMRR (Typ.) [dB]


PSRR (Typ.) [dB]


GBW (Typ.) [MHz]


Operating Temperature (Min.) [°C]


Operating Temperature (Max.) [°C]


Package Size [mm]

2.9x2.8 (t=1.25)

Find Similar


  • Low operating supply voltage
    +1.8 [V] ~ +5.5 [V] (single supply)
  • High large signal voltage gain
  • Internal ESD protection
    Human body model (HBM) ±4000 [V] (Typ.)
  • Low input bias current 1[pA] (Typ.)
  • High slew rate
    3.2 [V/μs]

Reference Design / Application Evaluation Kit

    • Reference Design - REF66009
    • LogiCoA™ Solution BUCK Converter (12V Input, 5V Output, 25W)
    • LogiCoA001-EVK-001 is a reference design for a BUCK converter that uses ROHM's analog-digital fusion control technology LogiCoA™, which includes a microcontroller ML62Q2035 suitable for LogiCoA™, a 100V gate driver BD2320EFJ-LA, LDO BD950N1WG-C, BD900N1WG-C, operational amplifier BU7481SG, and shunt resistor LTR100LJZPFSR020. Design data, sample software, and an operating system for power supply control are available for this reference design, as well as a reference board. We hope that you will have a chance to experience the analog-digital fusion control LogiCoA™ and make use of it in your future power supply device development.

      Reference Program

      We offer a reference program comprising an OS for power control and firmware for BUCK converter control. Additionally, we provide a communication GUI that allows communication from a Windows PC. Please utilize these as design references. For inquiries regarding the provision of these, please contact us via the inquiry form on our website.

      • Reference Program: LogiCoA™ Solutions Buck Converter Reference Program
      • Communication GUI (Excel file): LogiCoA™ Solution Back Converter Communication GUI


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