BU7495HFV-TR Datasheet, PDF (12/23 Pages) Rohm – Low Voltage Operation High Speed CMOS Operational Amplifiers

BU7495HFV BU7495SHFV
Application Information
NULL method condition for Test Circuit1
Parameter
Input Offset Voltage
Large Signal Voltage Gain
Common-mode Rejection Ratio
(Input Common-mode Voltage Range)
Power Supply Rejection Ratio
- Calculation -
1. Input Offset Voltage (V_IO)
2. Large Signal Voltage Gain (A_V)
3. Common-Mode Rejection Ratio (CMRR)
4. Power Supply Rejection Ratio (PSRR)
Datasheet
VDD, VSS, E_K, V_ICM Unit:V
V_F SW1 SW2 SW3 VDD VSS E_K V_ICM Calculation
V_F1 ON ON OFF 3
0 -1.5 1.8
1
V_{F2 ON ON ON}
3
-0.5
0
0.9
2
V_F3
-2.5
V_{F4 ON ON OFF 3}
0
0 -1.5
3
V_F5
1.8
V_F6
ON
1.8
ON OFF
0
-0.9
0
4
V_F7
5.5
V_IO =
|V_F1|
1 + R_F/R_S
[V]
Av = 20Log ^{EK × (1+RF/RS)} [dB]
|V_F3 - V_F2|
CMRR = 20Log ^{VICM × (1+RF/RS)}
|V_F5 - V_F4|
[dB]
PSRR = 20Log ^{VDD × (1+ RF/RS)} [dB]
|V_F7 - V_F6|
0.1μF
SW1
VDD
R_F=50kΩ
500kΩ
R_S=50Ω
R_I=1MΩ
0.015μF _0.015μF
DUT
E_K
Vo
500kΩ
V_ICM
R_S=50Ω
R_I=1MΩ
SW3
R_L
1000pF
50kΩ
SW2
V_RL
VSS
Figure 24. Test Circuit 1
0.01μF
15V
NULL
-15V
V V_F
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