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BU5255HFV Datasheet(PDF) 11 Page - Rohm

Part # BU5255HFV
Description  Input Full Swing, Push-pull Output Low Supply Current CMOS Comparators
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BU5255HFV Datasheet(HTML) 11 Page - Rohm

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Datasheet
www.rohm.com
TSZ02201-0RFR1G200420-1-2
© 2013 ROHM Co., Ltd. All rights reserved.
11/17
21.Oct.2013 Rev.001
TSZ22111・15・001
BU5255HFV
BU5255SHFV
Application Information
NULL Method Conditions for Test circuit 1
VDD, VSS, EK, VICM Unit:V
Parameter
VF
SW1
SW2
SW3
VDD
VSS
EK
VICM
Calculation
Input Offset Voltage
VF1
ON
ON
OFF
3
0
-0.1
3
1
Large Signal Voltage Gain
VF2
ON
ON
ON
3
0
-0.3
0.3
2
VF3
-2.7
Common-mode Rejection Ratio
(Input Common-mode Voltage Range)
VF4
ON
ON
OFF
3
0
-0.1
0
3
VF5
3
Power Supply Rejection Ratio
VF6
ON
ON
OFF
1.8
0
-0.1
0.3
4
VF7
ON
ON
OFF
5.5
0
- Calculation -
1. Input Offset Voltage (VIO)
2. Large Signal Voltage Gain (AV)
3. Common-mode Rejection Ratio (CMRR)
4. Power Supply Rejection Ratio (PSRR)
Application Information - continued
Figure 23. Test Circuit 1
VICM
RS=50Ω
RS=50Ω
RF=50kΩ
RI=1MΩ
RI=1MΩ
0.015
μF
0.015
μF
SW1
SW2
50k
SW3
RL
VRL
0.1
μF
EK
500k
500k
1000pF
VF
0.01
μF
15V
-15V
VDD
VSS
Vo
V
NULL
DUT
|VF5 -VF4|
CMRR = 20Log
V
ICM × (1+RF/RS)
[dB]
Av = 20Log
|VF3 -VF2|
E
K × (1+RF/RS)
[dB]
PSRR = 20Log
|VF7 - VF6|
VDD × (1+ R
F/RS)
[dB]
VIO =
1 + RF/RS
[V]
|VF1|


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