BU7233YF-C Datasheet, PDF (11/22 Pages) Rohm – Input Full Swing Open Drain Output Low Supply Current CMOS Comparators

BU7233YF-C
Datasheet
Application Information
NULL Method Conditions for Test Circuit 1
Parameter
VF
SW1 SW2 SW3 VDD VSS
VDD, VSS, EK, VICM, VRL Unit:V
EK VICM VRL Calculation
Input Offset Voltage
VF1 ON ON ON 3
0 -0.1 0.25 3
1
Large Signal Voltage Gain
VF2 _{ON ON ON}
3
-0.3
0
0.25 3
2
VF3
-2.7
Common-mode Rejection Ratio
(Input Common-mode Voltage Range)
VF4 _{ON ON ON}
VF5
3
0.25
0 -0.1
3
3
3
Power Supply Rejection Ratio
VF6 _{ON ON ON} 1.8
0 -0.1 0
1.8
4
VF7
5.5
5.5
- Calculation -
1. Input Offset Voltage (VIO)
VIO =
|VF1|
1 + RF/RS
[V]
2. Large Signal Voltage Gain (AV)
3. Common-mode Rejection Ratio (CMRR)
Av = 20Log ^{∆EK × (1+RF/RS)} [dB]
|VF3 - VF2|
CMRR = 20Log
∆VICM × (1+RF/RS)
|VF5 - VF4|
[dB]
4. Power Supply Rejection Ratio (PSRR)
PSRR = 20Log
∆VDD × (1+ RF/RS)
|VF7 - VF6|
[dB]
0.47μF
VICM
SW1
RS=50Ω
RI=1MΩ
0.47μF _0.47μF
RS=50Ω
RI=1MΩ
50kΩ
SW2
VDD
RF=50kΩ
500kΩ
EK
Vout
DUT
SW3
RL
VRL
VSS
500kΩ
1000pF
Figure 25. Test Circuit 1 (One channel only)
0.01μF
15V
NULL
-15V
V V_F
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TSZ02201-0RFR0G200730-1-2
17.Feb.2016 Rev.003