BU7442SF-E2 Rohm Semiconductor, BU7442SF-E2 Datasheet - Page 30

• Manufacturer Part Number: BU7442SF-E2
• Description: IC OPAMP 1.7-5.5V GRD SENSE 8SOP
• Manufacturer: Rohm Semiconductor

Specifications of BU7442SF-E2

• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Slew Rate: 0.3 V/µs
• Gain Bandwidth Product: 600kHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 1000µV
• Current - Supply: 100µA
• Current - Output / Channel: 10mA
• Voltage - Supply, Single/dual (±): 1.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOP
• Number Of Channels: 2
• Common Mode Rejection Ratio (min): 45 dB
• Input Offset Voltage: 6 mV
• Input Bias Current (max): 1 pA
• Output Current (typ): 6 mA, 10 mA
• Operating Supply Voltage: 1.7 V to 5.5 V
• Supply Current: 0.24 mA
• Maximum Power Dissipation: 620 mW
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Maximum Dual Supply Voltage: +/- 2.75 V
• Minimum Dual Supply Voltage: +/- 0.85 V
• Mounting Style: SMD/SMT
• Shutdown: No
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.7 V
• Technology: CMOS
• Voltage Gain Db: 95 dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: BU7442SF-E2TR

BU7261/BU7261S family, BU7241/BU7241S family, BU7295/BU7295S family, BU7275/BU7275S family
BU7262/BU7262S family, BU7242/BU7242S family, BU7264/BU7264S family, BU7244/BU7244S family
●Examples of circuit
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○Inverting amplifier
Vin
○Voltage follower
○Non-inverting amplifier
Vin
Vin
R1
R1
Fig. 192 Non-inverting amplifier circuit
Fig. 191 Inverting amplifier circuit
Fig. 190 Voltage follower circuit
R1//R2
VDD
R2
R2
VSS
VDD
VSS
VDD
VSS
Vout
30/36
Vout
Vout
Voltage gain is 0 [dB].
This circuit controls output voltage (Vout) equal input
voltage (Vin), and keeps Vout with stable because of high
input impedance and low output impedance.
Vout is shown next formula.
Vout=Vin
For inverting amplifier, Vin is amplified by voltage gain
decided R1 and R2, and phase reversed voltage is
outputted.
Vout is shown next formula.
Vout=-(R2/R1)・Vin
Input impedance is R1.
For non-inverting amplifier, Vin is amplified by voltage
gain decided R1 and R2, and phase is same with Vin.
Vout is shown next formula.
Vout=(1+R2/R1)・Vin
This circuit realizes high input impedance because Input
impedance is operational amplifier’s input Impedance.
Technical Note
2010.12 - Rev.A