BU7481SG
High Speed Ground Sense Operational Amplifier
BU7481SG
High Speed Ground Sense Operational Amplifier
低电压高速CMOS运算放大器是单片式IC。在单芯片中集成了单电路相位补偿电容内置型输出全振幅运算放大器。可实现低电压工作、低消耗电流、高速工作，输入偏置电流非常小是其特点。 低电压高速CMOS运算放大器根据输入类型，可分为以下两类。 输入全振幅 ： BU7291家族,BU7255家族 接地检测 ： BU7495家族,BU7481家族, BU7485家族,BU5281家族
主要规格
特性：
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/?s]
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)
特点：
?低电压工作+1.8 [V] ～ +5.5 [V] (单电源)
?直流电压增益大
?内置静电保护电路
人体模式 (HBM) ±4000[V] (Typ.)
?低输入偏置电流 1[pA] (Typ.)
?高转换速率
3.2[V/μs]
参考设计 / 应用评估套件
-
- 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)
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