BU7481SG
High Speed Ground Sense Operational Amplifier
BU7481SG
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
For Automotive usage, please contact Sales.
Product Detail
Specifications:
Power Supply (Min.) [V] (+5V=5, ±5V=10)
1.8
Power Supply (Max.) [V] (+5V=5, ±5V=10)
5.5
Channel
1
Circuit Current (Typ.) [mA/ch]
0.42
Input Offset Voltage (Max.) [mV]
8
Input Bias Current (Typ.) [nA]
0.001
Slew Rate (Typ.) [V/µs]
3.2
Input Voltage Range [V]
VSS to VDD-1.2
Output Voltage Range [V]
VSS+0.1 to VDD-0.1
Voltage gain (Typ.) [dB]
105
Output current (Typ.) [mA]
8
CMRR (Typ.) [dB]
60
PSRR (Typ.) [dB]
80
GBW (Typ.) [MHz]
2.8
Operating Temperature (Min.) [°C]
-40
Operating Temperature (Max.) [°C]
105
Package Size [mm]
2.9x2.8 (t=1.25)
Features:
- 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. Reference Program and Communication GUI are available here.
- LogiCoA™ Solution Buck Converter Reference Program
- LogiCoA™ Solution Buck Converter Communication GUI (Excel file)
