ROHM BU7495SHFV Technical data

A

Operational Amplifiers / Comparators

High Speed with Low Voltage
CMOS Operational Amplifiers

Input-Output Full Swing
BU7291G,BU7291SG,BU7255HFV,BU7255SHFV

Ground sense
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG
BU7485G,BU7485SG,BU5281G,BU5281SG

●Description

Low Voltage with High Speed CMOS Op-Amp integrates one independent output full swing Op-Amps and phase
compensation capacitors on a single chip. Especially, this series is operable with low voltage, low supply current, high speed
and low input bias current.

・Input-Output Full Swing

BU7291 family, BU7255 family

・Ground sense

BU7495 family, BU7481 family,
BU7485 family, BU5281 family

●Features

1) Low operating supply voltage
+2.4 [V] ~ +5.5 [V] (single supply): BU7291 family
BU7255 family
+1.8 [V] ~ +5.5 [V] (single supply): BU7495 family
BU7481 family
BU5281 family
+3.0 [V] ~ +5.5 [V] (single supply): BU7485 family

2) High large signal voltage gain

3) Internal ESD protection
Human body model (HBM) ±4000 [V] (Typ.)

4) Low input bias current 1[pA] (Typ.)

●Pin Assignments

BU7291G BU7291SG
BU7485G BU7485SG
BU7481G BU7481SG
BU5281G BU5281SG

High Speed Input-Output Full Swing Single

+IN

1

VSS

-IN

2

3

SSOP5

Ground Sense Single

5) High slew rate

3.0 [V/μs]: BU7291 family

3.4 [V/μs]: BU7255 family

5.0 [V/μs]: BU7495 family

3.2 [V/μs]: BU7481 family

2.0 [V/μs]: BU5281 family

10.0 [V/μs]: BU7485 family

VDD

5

+

-

4

OUT

HVSOF5

BU7255HFV
BU7495HFV BU7495SHFV

BU7255SHFV

Single

Single

Single

Single

BU7291G

(BU7291SG：Operation guaranteed up to +105℃)

BU7255HFV

(BU7255SHFV：Operation guaranteed up to +105℃)

BU7481G

(BU7481SG：Operation guaranteed up to +105℃)

BU7485G

(BU7485SG：Operation guaranteed up to +105℃)

BU5281G

(BU5281SG：Operation guaranteed up to +105℃)

BU7495HFV

(BU7495SHFV：Operation guaranteed up to +105℃)

No.10049EAT20

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© 2010 ROHM Co., Ltd. All rights reserved.

1/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

Technical Note

●Absolute Maximum Ratings(Ta=25[℃])

Ratings

Parameter Symbol

BU7291G, BU7255HFV
BU7495HFV, BU7481G

BU7485G, BU5281G

BU7291SG, BU7255SHFV
BU7495SHFV, BU7481SG

BU7485SG, BU5281SG

Supply Voltage VDD - VSS +7 V

Unit

Differential Input Voltage

Input Common-mode
Voltage Range

(*1)

Vid VDD - VSS V

Vicm (VSS - 0.3) ~ (VDD + 0.3) V

Operating Temperature Topr - 40 ~ +85 - 40 ~ +105 ℃

Storage Temperature Tstg - 55 ~ +125 ℃

Maximum
Junction Temperature

Note: Absolute maximum rating item indicates the condition which must not be exceeded.
Application of voltage in excess of absolute maximum rating or use out absolute maximum rated
temperature environment may cause deterioration of characteristics.
(*1) The voltage difference between inverting input and non-inverting input is the differential input voltage.
Then input terminal voltage is set to more than VSS.

Tjmax +125 ℃

●Electrical characteristics: Input-Output Full Swing
○BU7291 family(Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])

Limits

Parameter Symbol

Temperature

Range

BU7291G, BU7291SG

Unit Condition

Min. Typ. Max.

Input Offset Voltage

Input Offset Current

Input Bias Current

(*2)

Vio 25℃ － 1 9 mV －

(*2)

Iio 25℃ － 1 － pA －

(*2)

Ib 25℃ － 1 － pA －

Supply Current

(*3)

IDD

25℃ － 470 800

Full range - － 1100

RL=∞ All Op-Amps

μA

AV=0[dB],VIN=1.5[V]

High Level Output Voltage VOH 25℃ VDD-0.1 － － V RL=10[kΩ]

Low Level Output Voltage VOL 25℃ － － VSS+0.1 V RL=10[kΩ]

Large Signal Voltage Gain AV 25℃ 70 105 － dB RL=10[kΩ]

Input Common-mode
Voltage Range

Vicm 25℃ 0 － 3 V VSS ~ VDD

Common-mode Rejection Ratio CMRR 25℃ 40 60 － dB －

Power Supply Rejection Ratio PSRR 25℃ 45 80 － dB －

Output Source Current

Output Sink Current

(*4)

IOH 25℃ 5 8 － mA VDD-0.4[V]

(*4)

IOL 25℃ 9 16 － mA VSS+0.4[V]

Slew Rate SR 25℃ － 3.0 － V/μs CL=25[pF]

Gain Band width FT 25℃ － 2.8 － MHz CL=25[pF], AV=40[dB]

Phase Margin θ 25℃ － 50 － ° CL=25[pF], AV=40[dB]

Total Harmonic Distortion THD 25℃ － 0.03 － % VOUT=0.8[Vp-p],f=1[kHz]

(*2) Absolute value
(*3) Full range BU7291: Ta=-40[℃]~+85[℃] BU7291S: Ta=-40[℃]~+105[℃]
(*4) Under the high temperature environment, consider the power dissipation of IC when selecting the output current.
When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC.

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© 2010 ROHM Co., Ltd. All rights reserved.

2/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

○BU7255(Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])

Limits

Parameter Symbol

Temperature

Range

BU7255HFV, BU7255SHFV

Unit Condition

Min. Typ. Max.

Input Offset Voltage

(*5)

Vio 25℃ － 1 9 mV －

Technical Note

Input Offset Current

Input Bias Current

Supply Current

(*5)

Iio 25℃ － 1 － pA －

(*5)

Ib 25℃ － 1 － pA －

(*6)

IDD

25℃ － 540 900

Full range － － 1200

RL=∞ All Op-Amps

μA

AV=0[dB],VIN=1.5[V]

High Level Output Voltage VOH 25℃ VDD-0.1 － － V RL=10[kΩ]

Low Level Output Voltage VOL 25℃ － － VSS+0.1 V RL=10[kΩ]

Large Signal Voltage Gain AV 25℃ 60 105 － dB RL=10[kΩ]

Input Common-mode
Voltage Range

Vicm 25℃ 0 - 3 V VSS ~ VDD

Common-mode Rejection Ratio CMRR 25℃ 40 60 － dB －

Power Supply Rejection Ratio PSRR 25℃ 45 80 － dB －

Output Source Current

Output Sink Current

(*7)

IOH 25℃ 2 4 － mA VDD - 0.4[V]

(*7)

IOL 25℃ 4 8 － mA VSS + 0.4[V]

Slew Rate SR 25℃ － 3.4 － V/μs CL=25[pF]

Gain Band width FT 25℃ － 4 － MHz CL=25[pF], AV=40[dB]

Phase Margin θ 25℃ － 40 － ° CL=25[pF], AV=40[dB]

(*5) Absolute value
(*6) Full range BU7255: Ta=-40[℃]~+85[℃] BU7255S: Ta=-40[℃]~+105[℃]
(*7) Under the high temperature environment, consider the power dissipation of IC when selecting the output current.
When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC.

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

3/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

○BU7495 family(Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])

Limits

Parameter Symbol

Temperature

Range

BU7495HFV, BU7495SHFV

Unit Condition

Min. Typ. Max.

Input Offset Voltage

(*8)

Vio 25℃ － 1 6 mV －

Technical Note

Input Offset Current

Input Bias Current

Supply Current

(*8)

Iio 25℃ － 1 － pA －

(*8)

Ib 25℃ － 1 － pA －

(*9)

IDD

25℃ － 650 1150

Full range － － 1350

RL=∞ All Op-Amps

μA

AV=0[dB],VIN=0.9[V]

High Level Output Voltage VOH 25℃ VDD-0.1 － － V RL=10[kΩ]

Low Level Output Voltage VOL 25℃ - - VSS+0.1 V RL=10[kΩ]

Large Signal Voltage Gain AV 25℃ 60 100 － dB RL=10[kΩ]

Input Common-mode
Voltage Range

Vicm 25℃ 0 - 1.8 V VSS ~ VDD-1.2[V]

Common-mode Rejection Ratio CMRR 25℃ 45 60 － dB －

Power Supply Rejection Ratio PSRR 25℃ 60 80 － dB －

Output Source Current

Output Sink Current

(*10)

IOH 25℃ 4 7 － mA VDD - 0.4[V]

(*10)

IOL 25℃ 9 14 － mA VSS + 0.4[V]

Slew Rate SR 25℃ － 5.0 － V/μs CL=25[pF]

Gain Band width FT 25℃ － 4 － MHz CL=25[pF], AV=40[dB]

Phase Margin θ 25℃ － 50 － ° CL=25[pF], AV=40[dB]

Total Harmonic Distortion THD 25℃ － 0.03 － % VOUT=0.8[Vp-p], f=1[kHz]

(*8) Absolute value
(*9) Full range BU7495: Ta=-40[℃]~+85[℃] BU7495S: Ta=-40[℃]~+105[℃]
(*10) Under the high temperature environment, consider the power dissipation of IC when selecting the output current.
When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

4/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

○BU7481 family(Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])

Limits

Parameter Symbol

Temperature

Range

BU7481G, BU7481SG

Unit Condition

Min. Typ. Max.

Input Offset Voltage

(*11)

Vio 25℃ － 1 8 mV －

Technical Note

Input Offset Current

Input Bias Current

Supply Current

(*11)

Iio 25℃ － 1 － pA －

(*11)

Ib 25℃ － 1 － pA －

(*12)

IDD

25℃ － 420 750

Full range － － 900

RL=∞ All Op-Amps

μA

AV=0[dB],VIN=0.9[V]

High Level Output Voltage VOH 25℃ VDD-0.1 － － V RL=10[kΩ]

Low Level Output Voltage VOL 25℃ － － VSS+0.1 V RL=10[kΩ]

Large Signal Voltage Gain AV 25℃ 70 105 － dB RL=10[kΩ]

Input Common-mode
Voltage Range

Vicm 25℃ 0 － 1.8 V VSS ~ VDD-1.2[V]

Common-mode Rejection Ratio CMRR 25℃ 45 60 － dB －

Power Supply Rejection Ratio PSRR 25℃ 60 80 － dB －

Output Source Current

Output Sink Current

(*13)

IOH 25℃ 5 8 － mA VDD - 0.4[V]

(*13)

IOL 25℃ 9 16 － mA VSS + 0.4[V]

Slew Rate SR 25℃ － 3.2 － V/μs CL=25[pF]

Gain Band width FT 25℃ － 2.8 － MHz CL=25[pF], AV=40[dB]

Phase Margin θ 25℃ － 50 － ° CL=25[pF], AV=40[dB]

Total Harmonic Distortion THD 25℃ － 0.03 － % VOUT=0.8[Vp-p], f=1[kHz]

(*11) Absolute value
(*12) Full range BU7481: Ta=-40[℃]~+85[℃] BU7481S: Ta=-40[℃]~+105[℃]
(*13) Under the high temperature environment, consider the power dissipation of IC when selecting the output current.
When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC.

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

5/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

○BU7485 family(Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])

Limits

Parameter Symbol

Temperature

Range

BU7485G, BU7485SG

Unit Condition

Min. Typ. Max.

Input Offset Voltage

(*14)

Vio 25℃ － 1 9.5 mV －

Technical Note

Input Offset Current

Input Bias Current

Supply Current

(*14)

Iio 25℃ － 1 － pA －

(*14)

Ib 25℃ － 1 － pA －

(*15)

IDD

25℃ － 1500 2000

Full range － － 2400

RL=∞ All Op-Amps

μA

AV=0[dB],VIN=0.8[V]

High Level Output Voltage VOH 25℃ VDD-0.1 － － V RL=10[kΩ]

Low Level Output Voltage VOL 25℃ － － VSS+0.1 V RL=10[kΩ]

Large Signal Voltage Gain AV 25℃ 70 105 － dB RL=10[kΩ]

Input Common-mode
Voltage Range

Vicm 25℃ 0 － 1.6 V VSS ~ VDD-1.4[V]

Common-mode Rejection Ratio CMRR 25℃ 45 60 － dB －

Power Supply Rejection Ratio PSRR 25℃ 60 80 － dB －

Output Source Current

Output Sink Current

(*16)

IOH 25℃ 4 8 － mA VDD-0.4[V]

(*16)

IOL 25℃ 7 12 － mA VSS + 0.4[V]

Slew Rate SR 25℃ － 10 － V/μs CL=25[pF]

Gain Band width FT 25℃ － 10 － MHz CL=25[pF], AV=40[dB]

Phase Margin θ 25℃ － 50 － ° CL=25[pF], AV=40[dB]

Total Harmonic Distortion THD 25℃ － 0.03 － % VOUT=0.7[Vp-p], f=1[kHz]

(*14) Absolute value
(*15) Full range BU7485: Ta=-40[℃]~+85[℃] BU7485S: Ta=-40[℃]~+105[℃]
(*16) Under the high temperature environment, consider the power dissipation of IC when selecting the output current.
When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC.

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

6/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

○BU5281 family(Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])

Limits

Parameter Symbol

Temperature

Range

BU5281G, BU5281SG

Unit Condition

Min. Typ. Max.

Input Offset Voltage

(*17)

Vio 25℃ － 0.1 2.5 mV －

Technical Note

Input Offset Voltage drift

Input Offset Current

Input Bias Current

Supply Current

(*18)

(*17)

ΔVio/ΔT - － 0.8 － μV/℃ －

(*17)

Iio 25℃ － 1 － pA －

(*17)

Ib 25℃ － 1 － pA －

IDD

25℃ － 750 1000

Full range － － 1200

RL=∞ All Op-Amps

μA

AV=0[dB],VIN=0.9[V]

High Level Output Voltage VOH 25℃ VDD-0.1 － － V RL=10[kΩ]

Low Level Output Voltage VOL 25℃ － － VSS+0.1 V RL=10[kΩ]

Large Signal Voltage Gain AV 25℃ 70 110 － dB RL=10[kΩ]

Input Common-mode
Voltage Range

Vicm 25℃ 0 － 1.8 V VSS ~ VDD - 1.2[V]

Common-mode Rejection Ratio CMRR 25℃ 45 60 － dB －

Power Supply Rejection Ratio PSRR 25℃ 60 80 － dB －

Output Source Current

Output Sink Current

(*19)

IOH 25℃ 5 8 － mA VDD-0.4[V]

(*19)

IOL 25℃ 10 16 － mA VSS+0.4[V]

Slew Rate SR 25℃ － 2.0 － V/μs CL=25[pF]

Gain Band width FT 25℃ － 3 － MHz CL=25[pF], AV=40[dB]

Phase Margin θ 25℃ － 40 － ° CL=25[pF], AV=40[dB]

1/2

－ 18 － nV/(Hz)

AV=40[dB], f=1[kHz]

Input Referred Noise Voltage Vin 25℃

－ 3.2 － μVrms AV=40[dB], DINAUDIO

Total Harmonic Distortion THD 25℃ － 0.003 － % VOUT=0.4[Vp-p], f=1[kHz]

(*17) Absolute value
(*18) Full range BU5281: Ta=-40[℃]~+85[℃] BU5281S: Ta=-40[℃]~+105[℃]
(*19) Under the high temperature environment, consider the power dissipation of IC when selecting the output current.
When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC.

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

7/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

–

–

–

–

–

–

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Reference Data (BU7291 family)

800

600

400

200

POWER DISSIP ATION [mW] .

0

0 5 0 100 15 0

Fig.1 Fig.2 Fig.3

100 0

80 0

60 0

40 0

S UPPLY CUR RENT [μA]

20 0

0

-60-30 0 306090120

Fig.4 Fig.5 Fig.6

Ambient Temperature

20

15

10

-40℃ 25℃ 85℃

5

OUTPUT VOLTAGE LOW [mV]

0

23456

Fig.7 Fig.8 Fig.9

Supply Voltage (RL=10[kΩ])

20

15

10

5

OUTPUT SOURCE CURRENT [mA]

0

-60 -30 0 30 60 90 120

Fig.10 Fig.11 Fig.12

Output Source Current – Ambient Temperature

(VOUT=VDD-0.4[V])

BU7291G

AMBIEN T TEMPER ATURE [℃]

Derating curve

2.4V

AMBIE NT TE MPERATU RE [℃]

Supply Current

SUPPLY VOLTAG E [ V]

Output Voltage Low

5.5V

3.0V

2.4V

AMBIENT TEMPERATURE [℃]

(*)The above data is ability value of sample, it is not guaranteed.BU7291G: -40[℃] ~ +85[℃] BU7291SG: -40[℃] ~ +105[℃]

85

5.5V

3.0V

BU7291 famil

BU7291 family

BU7291 famil

105℃

BU7291 family

800

600

BU7291SG

400

200

POWER DISSIP ATION [m W] .

0

0 5 0 100 15 0

AMBIEN T TEMPER ATURE [℃]

BU7291 family

105

Derating curve

6

5

4

3

2

1

OUTPUT VOLTAGE HIGH [V]

0

123456

105℃

85℃

-40℃

SUPPL Y VOLTAGE [V]

BU7291 family

25℃

Output Voltage High

Supply Voltage (RL=10[kΩ])

20

15

10

5

O UTPUT VOLTAGE LOW [m V]

0

-60-30 0 30 60 90120

3.0V

2.4V

AMBIENT TEMPERATURE [℃]

BU7291 family

5.5V

Output Voltage Low

Ambient Temperature (RL=10[kΩ])

105℃

BU7291 family

85℃

80

-40℃

60

25℃

40

20

OUT PUT SINK CURREN T [mA]

0

0.0 0.5 1.0 1.5 2.0 2.5 3.0

O UTPUT VOLTAGE [V]

Output Sink Current – Output Voltage

(VDD=3[V])

1000

800

600

400

SUPPLY CURRENT [μA]

200

0

23 456

Supply Current

6

5

4

3

2

1

OUT PUT VOLTAG E HIGH [V ]

0

-60 -30 0 30 60 90 120
AMBIEN T TEMPERATU RE [℃]

Output Voltage High

Ambient Temperature (RL=10[kΩ])

50

40

30

20

10

OUTPUT SOURCE CURRENT [mA]

0

-40℃

0 0.5 1 1. 5 2 2.5 3

Output Source Current

Output Voltage (VDD=3[V])

50

40

30

20

10

OUTPUT SINK CURRENT [mA]

0

-60-30 0 306090120
AMBIEN T TEMPER ATURE [℃]

Output Sink Current – Ambient Temperature

(VOUT=VSS+0.4[V])

Technical Note

105℃

85℃

-40℃ 25℃

SUPPLY VOLTAG E [V ]

OUTPUT V OLTAGE [V]

2.4V

Supply Voltage

5.5V

3.0V

2.4V

25℃

85℃ 105℃

5.5V

3.0V

BU7291 family

BU7291 famil

BU7291 family

BU7291 famil

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© 2010 ROHM Co., Ltd. All rights reserved.

8/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

y

y

y

y

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

Technical Note

●Reference Data (BU7291 family)

10 .0

7.5

5.0

2.5

0.0

-2 .5

-5 .0

-7 .5

INPU T OFFSET VOLTAGE [mV]

-10.0
23456

Fig.13 Fig.14 Fig.15

Input Offset Voltage – Supply Voltage

(Vicm=VDD, VOUT=1.5[V])

160

140

120

100

80

LARGE SIGN AL VOLTAG E GAI N [dB]

60

23456

Fig.16 Fig.17 Fig.18

Large Signal Voltage Gain

120

100

80

60

40

20

COMMON MODE REJECTION RATIO [dB]

0

-60-30 0 306090120
AMBIE NT TEM PERAT URE [℃]

Fig.19 Fig.20 Fig.21

Common Mode Rejection Ratio

– Ambient Temperature

5.0

4.0

3.0

2.0

SLEW RATE H-L [V/μs]

1.0

0.0

-60 - 30 0 30 60 90 120

AMBIEN T T EMPER ATU RE [℃]

Fig.22 Fig.23

Slew Rate H-L – Ambient Temperature

-40℃

105℃

S UPPLY V OLTAGE [V]

85℃

SUPPLY VOLTAGE [V]

– Supply Voltage

5.5V

2.4V

3.0V

5.5V

2.4V

BU7291 famil

25℃

85℃

BU7291 family

105℃

-40℃ 25℃

BU7291 family

BU7291 famil

3.0V

10.0

7.5

5.0

2.5

0.0

-2.5

-5.0

INPUT O FFSET VOLTAGE [ mV]

-7.5

-1 0.0

-60-30 0 306090120

2.4V 3.0V

AMBIEN T TEMPER ATURE [℃]

Input Offset Voltage – Ambient Temperature

(Vicm=VDD, VOUT=1.5[V])

160

140

120

100

80

LARGE S IGNAL VOLTAG E GAIN [dB]

60

-60-300 306090120
AMBIEN T TEMPER ATURE [℃]

Large Signal Voltage Gain

– Ambient Temperature

140

120

100

80

60

40

20

POWER SUPPLY REJECTION RATIO [dB]

0

-6 0 -30 0 3 0 60 90 12 0
AMBIENT TEMPERATURE [℃]

Power Supply Rejection Ratio

– Ambient Temperature

100

80

60

GAIN[d B]

40

20

0

1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 1.E+08

Phase

Gain

FREQUENCY [Hz]

Voltage Gain－Frequency

(*)The above data is ability value of sample, it is not guaranteed. BU7291G: -40[℃] ~ +85[℃] BU7291SG: -40[℃] ~ +105[℃]

5.5V

2.4V

BU7291 famil

BU7291 family

5.5V

3.0V

BU7291 famil

BU7291 famil

200

150

100

50

0

15

10

5

0

-5

-1 0

INPU T OFFSET VOLTAGE [mV]

-1 5

-101234

85℃ 105℃

25℃

INPUT VOLTAGE [V]

BU7291 famil

-40℃

Input Offset Voltage – Input Voltage

(VDD=3[V])

120

100

80

60

40

20

COMMON MODE REJECTION RATIO [dB]

0

2 345 6

85℃

-40℃ 25℃

SUPPL Y VOLTAGE [V]

BU7291 famil

105℃

Common Mode Rejection Ratio

– Supply Voltage (VDD=3[V])

5

4

3

2

SL E W RAT E L- H [V/ μs]

1

0

-60 - 30 0 30 6 0 9 0 120
AMBIEN T TEMPER ATURE [℃]

2.4V

BU7291 famil

5.5V

Slew Rate L-H

– Ambient Temperature

PHASE [deg ]

3.0V

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

9/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

y

y

y

y

y

–

–

–

–

–

–

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Reference Data (BU7255 family)

1000

80 0

60 0

40 0

20 0

PO WER D ISSIPATIO N [mW ] .

0

0 50 100 150

Fig.24 Fig.25 Fig.26

15 00

12 00

900

600

SUPPL Y CURREN T [μA]

300

0

-6 0 - 30 0 30 60 90 12 0

Fig.27 Fig.28 Fig.29

20

15

10

-40℃ 25℃

5

OUT PU T VOLTA GE LOW [mV]

0

23456

Fig.30 Fig.31 Fig.32

Supply Voltage (RL=10[kΩ])

20

15

10

3.0V

5

OUTPUT SOURCE CURRENT [mA]

0

-6 0 -30 0 30 6 0 90 12 0

Fig.33 Fig.34 Fig.35

Output Source Current –Ambient Temperature

(*)The above data is ability value of sample, it is not guaranteed. BU7255HFV: -40[℃] ~ +85[℃] BU7255SHFV: -40[℃] ~ +105[℃]

BU7255HFV

85

AMBIEN T TEMPER ATURE [℃]

Derating curve

3.0V

AMBIEN T TEMPER ATU RE [℃]

Supply Current

Ambient Temperature

85℃ 105℃

SUPP LY V OLTAG E [V]

Output Voltage Low

5.5V

2.4V

A MBIENT T EMPERATU RE [

(VOUT=VDD-0.4[V])

5.5V

2.4V

BU7255

BU7255 famil

BU7255 family

BU7255 famil

℃

]

100 0

80 0

60 0

40 0

20 0

PO WER D ISS IPATIO N [mW] .

0

0 5 0 100 150

BU7255SHFV

AMBIEN T TEM PERAT URE [℃]

Derating curve

6

5

4

3

2

1

OUT PUT VOL TAGE H IGH [ V]

0

23456

105℃

85℃

-40℃

SUPP LY VOLTAGE [V]

Output Voltage High

Supply Voltage (RL=10[kΩ])

20

15

10

5

OUTPUT VOLTAGE LOW [mV]

0

-60 -30 0 30 60 90 120

2.4V

AMBIENT TEMPERATURE [℃]

Output Voltage Low

Ambient Temperature (RL=10[kΩ])

40

30

20

10

OUT PUT SINK CURRENT [m A]

25℃

85℃

0

0.0 0. 5 1.0 1. 5 2 .0 2.5 3 .0
OUT PUT VOL TAGE [V]

Output Sink Current – Output Voltage

(VDD=3[V])

-40℃

25℃

5.5V

105℃

BU7255 famil

105

BU7255 famil

BU7255 famil

3.0V

BU7255 famil

150 0

125 0

100 0

75 0

50 0

SUPPLY CURRENT [μA]

25 0

0

23456

SUPPLY VOLTAGE [V]

Supply Current

6

5

4

3

2

1

OUT PUT VOLTAG E HIGH [V]

0

-60-30 0 306090120
A MBIEN T TEMP ERAT URE [℃]

Output Voltage High

Ambient Temperature (RL=10[kΩ])

20

15

10

OUTP UT SOURCE CURRENT [mA]

-40℃

5

0

00.511.522.53

OUT PUT VOLTAG E [V]

Output Source Current

Output Voltage (VDD=3[V])

40

30

20

3.0V

10

OUTPUT SINK CURRENT [mA]

2.4V

0

-60 - 30 0 30 6 0 90 120

AMBIEN T TEMPER ATURE[℃]

Output Sink Current – Ambient Temperature

(VOUT=VSS+0.4[V])

Technical Note

BU7255 famil

105℃

85℃

-40℃
25℃

Supply Voltage

BU7255 famil

5.5V

3.0V

2.4V

BU7255 family

25℃

85℃ 105℃

5.5V

BU7255 famil

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

10/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

y

y

y

y

y

–

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

Technical Note

●Reference Data (BU7255 family)

10. 0

7. 5

5. 0

2. 5

0. 0

-2.5

-5.0

INPUT OF FSET VOL TAGE [mV ]

-7.5

-10. 0

234 56

Fig.36 Fig.37 Fig.38

Input Offset Voltage – Supply Voltage

14 0

12 0

10 0

80

60

40

20

LARGE SIGNAL VOLTAGE G AIN [d B]

0

2 345 6

Fig.39 Fig.40 Fig.41

12 0

10 0

80

60

40

20

C OMM ON MO DE RE JE CTI ON RATI O [d B]

0

-60-300306090120

Fig.42 Fig.43 Fig.44

Common Mode Rejection Ratio

8.0

6.0

4.0

SLEW RA TE H-L [V/μs]

2.0

0.0

-60 -30 0 30 60 90 120

Fig.45 Fig.46

Slew Rate H-L

-40℃ 25℃

SUPPLY VOLTAGE[V ]

(Vicm=VDD, VOUT=1.5V])

-40℃ 25℃

SUPPLY VOLTAGE [ V]

Large Signal Voltage Gain

– Supply Voltage

AMBIEN T TEMPER ATURE [℃]

– Ambient Temperature

2.4V

AMBIENT TEMPERATURE [℃]

Ambient Temperature

5.5V

2.4V 3.0V

5.5V

105℃

3.0V

BU7255 famil

85℃ 105℃

BU7255 family

85℃

BU7255 famil

BU7255 famil

10.0

7.5

5.0

2.5

0.0

-2.5

-5.0

INPUT OFFSET VOLTAGE [mV]

-7.5

-1 0.0

-60 -30 0 30 60 90 120
AMBIE NT TEMPER ATURE [℃]

5.5V

3.0V

Input Offset Voltage – Ambient Temperature

(Vicm=VDD, VOUT=1.5[V])

16 0

14 0

12 0

10 0

80

LARGE SIGNAL VOLTAGE G AIN [dB ]

60

-60 -30 0 30 60 9 0 120

2.4V 3.0V

AMBIEN T TEMPER ATURE [℃]

Large Signal Voltage Gain

– Ambient Temperature

140

120

100

80

60

40

20

P OWE R S UPP LY RE JEC TIO N RA TI O [d B]

0

-60 -30 0 30 60 90 120
AMBIE NT TEMPER ATURE [℃]

Power Supply Rejection Ratio

– Ambient Temperature

100

80

60

GAIN [dB]

40

20

0

1.E+00 1.E+01 1.E+02 1. E+03 1. E+04 1.E+05 1.E+06 1.E+07 1.E+08

Phase

Gain

FREQUENCY [Hz]

Voltage Gain－Frequency

(*)The above data is ability value of sample, it is not guaranteed. BU7255HFV: -40[℃] ~ +85[℃] BU7255SHFV: -40[℃] ~ +105[℃]

5.5V

2.4V

BU7255 family

BU7255 famil

BU7255 famil

BU7255 famil

20 0

15 0

10 0

50

0

15

10

5

0

-5

-10

INPU T OFFSET VOLTAG E [mV]

-15

-101234

25℃

-40℃

INPU T VOLTA GE [V ]

105℃

Input Offset Voltage – Input Voltage

(VDD=3[V])

120

100

80

60

40

20

COMMON MODE REJECTION RATIO [dB]

0

2 345 6

85℃

SUPPL Y VOLTAGE [ V]

105℃

-40℃

25℃

Common Mode Rejection Ratio

Supply Voltage (VDD=3[V])

8

6

4

2

SLEW RATE L- H [V/ μs]

0

-60-300306090120

5.5V

3.0V

2.4V

AMBI ENT TEMPER ATURE [℃]

Slew Rate L-H

– Ambient Temperature

PHASE [d eg]

BU7255 famil

85℃

BU7255 famil

BU7255 famil

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

11/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

y

y

y

y

y

y

y

–

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

Technical Note

●Reference Data (BU7495 family)

1000

80 0

60 0

40 0

20 0

PO WER D ISS IPATIO N [mW] .

0

0 5 0 1 00 150

Fig.47 Fig.48 Fig.49

2

1. 5

1

0. 5

SUPPLY CURREN T [ mA]

0

-60-300 306090120

Fig.50 Fig.51 Fig.52

15

10

5

OUTPUT VOLTAGE LOW [mV]

0

12345 6

Fig.53 Fig.54 Fig.55

Supply Voltage (RL=10[kΩ])

20

15

10

5

OUTPUT SOURCE CURRENT [mA]

0

-60-30 0 306090120

Fig.56 Fig.57 Fig.58

Output Source Current – Ambient Temperature

BU7495HFV

AMBIEN T TEMPER ATURE [℃]

Derating curve

A MBIEN T TEMPERA TURE [℃]

Supply Current

Ambient Temperature

85℃

SUPP LY VOLTAGE [V]

Output Voltage Low

5.5V

3.0V

1.8V

AMBIE NT TEMPER ATURE [℃]

(VOUT=VDD-0.4[V])

(*)The above data is ability value of sample, it is not guaranteed. BU7495HFV: -40[℃] ~ +85[℃] BU7495SHFV: -40[℃] ~ +105[℃]

BU7495 famil

85

BU7495 famil

5.5V

3.0V

1.8V

BU7495 famil

105℃

-40℃ 25℃

BU7495 famil

1000

80 0

60 0

40 0

20 0

PO WER DI SSI PATIO N [mW] .

0

050100150

BU7495SHFV

AMBIEN T TEMPER ATURE [℃]

BU7495 famil

105

Derating curve

6

5

4

3

2

1

OUTPU T VOLT AGE HI GH [V]

0

123456

85℃

-40℃

SUPP LY VOLTAGE [V]

BU7495 famil

105℃

25℃

Output Voltage High

– Supply Voltage (RL=10[kΩ])

20

15

10

3.0V

5

OUTPUT V OLTAG E LOW [m V]

0

-60-30 0 306090120
AMBIEN T TEMPER ATURE [℃]

BU7495 famil

5.5V

1.8V

Output Voltage Low – Ambient

Temperature (RL=10[kΩ])

60

50

40

30

20

10

OUT PUT SINK CURRENT [ mA]

0

0.0 0. 5 1. 0 1. 5 2.0 2. 5 3. 0

25℃

85℃

OUT PUT VOL TAGE [V ]

BU7495 famil

-40℃

105℃

Output Sink Current – Output Voltage

(VDD=3[V])

2

1.5

1

0.5

SUPPLY CURRENT [mA]

0

123456

85℃

25℃

SUPPL Y VOLTAGE [V]

Supply Current – Supply Voltage

6

5

4

3

2

1

OUT PUT VOLTAG E HIGH [V]

0

-60 - 30 0 30 60 9 0 1 20

3.0V

1.8V

AMBIEN T TEMPERAT URE [℃]

Output Voltage High

– Ambient Temperature (RL=10[kΩ])

40

30

20

10

OUTP UT SOURCE CURRENT [mA]

0

-40℃

85℃ 105℃

00.511.522.53

OUTPUT VOLTAGE [V]

Output Source Current – Output

Voltage (VDD=3[V])

40

30

20

10

OUTPU T SINK CU RRENT [m A]

0

5.5V

3.0V

1.8V

-60-30 0 30 60 90120

AMBIEN T TEMPER ATURE[℃]

Output Sink Current – Ambient Temperature

(VOUT=VSS+0.4[V])

BU7495 famil

105℃

-40℃

BU7495 famil

5.5V

BU7495 family

25℃

BU7495 famil

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

12/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

–

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Reference Data (BU7495 family)

10. 0

7. 5

5. 0

2. 5

0. 0

-2.5

-5.0

INPU T OFFSET V OLTAGE [mV]

-7.5

-10. 0
12 345 6

Fig.59 Fig.60 Fig.61

Input Offset Voltage – Supply Voltage

(Vicm=VDD-1.2[V], VOUT=1.5[V])

16 0

14 0

12 0

10 0

80

60

40

20

LARGE SIGNAL VOLTAGE G AIN [d B]

0

1234 56

Fig.62 Fig.63 Fig.64

Large Signal Voltage Gain

12 0

10 0

80

60

40

20

C OMM ON MO DE RE JE CTI ON RATI O [ dB ]

0

-60-30 0 306090120

Fig.65 Fig.66 Fig.67

Common Mode Rejection Ratio

– Ambient Temperature

8.0

6.0

4.0

SLEW RATE H -L [V/ μs]

2.0

0.0

-6 0 -30 0 3 0 6 0 9 0 1 20

Fig.68 Fig.69

Slew Rate H-L – Ambient Temperature

105℃

-40℃

INPU T VOL TAGE [ V]

-40℃ 25℃

SUPPLY VOLTA GE [V]

– Supply Voltage

5.5V

A MBIEN T TEMP ERAT URE [℃]

AMBIEN T TEMP ERAT URE [℃]

(*)The above data is ability value of sample, it is not guaranteed. BU7495HFV: -40[℃] ~ +85[℃] BU7495SHFV: -40[℃] ~ +105[℃]

1.8V

5.5V

BU7495 famil

25℃

85℃

BU7495 family

85℃ 105℃

BU7495 family

3.0V

BU7495 famil

3.0V

1.8V

10.0

7.5

5.0

2.5

0.0

-2.5

-5.0

INPUT OFFSET VOLTAGE [mV]

-7.5

-1 0.0

-60-300 306090120
AMBIENT TEMPERATURE [℃]

5.5V

1.8V

3.0V

Input Offset Voltage – Ambient Temperature

(Vicm=VDD, VOUT=1.5[V])

14 0

12 0

10 0

80

60

40

20

LARGE SIGNAL VOL TA GE GA IN [dB ]

0

-60-30 0 30 60 90120

1.8V 3.0V

AMBIE NT TE MPE RATUR E [℃]

BU7495 family

5.5V

Large Signal Voltage Gain

– Ambient Temperature

120

100

80

60

40

20

P OWE R S UPP LY RE JEC TIO N RA TI O [d B]

0

-60 -30 0 30 60 90 120
AMBIE NT TEMPER ATURE [℃]

BU7495 famil

Power Supply Rejection Ratio

– Ambient Temperature

100

Phase

80

60

GAIN [ dB]

40

20

0

1.E+00 1.E+01 1. E+02 1.E +03 1. E+04 1.E+ 05 1. E+06 1.E+07 1.E+08

Gain

FRE Q UE NCY [H z]

BU7495 family

200

150

100

50

0

Voltage Gain－Frequency

15

10

5

0

-5

-10

INPU T OFFSET VOLTAG E [mV]

-15

-101 23

Input Offset Voltage – Input Voltage

120

100

80

60

40

20

COMMON MODE REJECTION RATIO [dB]

0

12 3456

Common Mode Rejection Ratio

Supply Voltage (VDD=3[V])

8

6

4

2

SLEW R ATE L-H [V /μs]

0

-60-30 0 30 60 90120
AMBIEN T TEMPERA TURE [℃]

PHASE [deg]

Technical Note

BU7495 familyBU7495 famil

105℃

85℃

25℃

-40℃

INPU T VOLTA GE [V ]

(VDD=3[V])

-40℃

SUPPLY VOLTA GE [V]

5.5V

1.8V

Slew Rate L-H

Ambient Temperature

85℃

25℃

BU7495 family

105℃

BU7495 family

3.0V

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

13/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

y

05

y

y

y

y

y

–

–

–

–

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

Technical Note

●Reference Data (BU7481 family)

1000

800

600

400

200

PO WER D ISSIPATIO N [mW ] .

0

050100150

Fig.70 Fig.71 Fig.72

80 0

60 0

40 0

20 0

SUPPLY CURRENT [μA]

0

-60-30 0 30 60 90120

Fig.73 Fig.74 Fig.75

15

10

5

OUTPUT VOLTAGE LOW [mV]

0

12345 6

Fig.76 Fig.77 Fig.78

Supply Voltage (RL=10[kΩ])

20

15

10

5

OUTPUT SOURCE CURRENT [mA]

0

-60-30 0 306090120

Fig.79 Fig.80 Fig.81

Output Source Current –Ambient Temperature

BU7481G

AMBI ENT TEMPER ATURE [℃]

Derating curve

3.0V

AMBI ENT TEMPER ATURE [

Supply Current

Ambient Temperature

85℃

-40℃

SUPP LY VOLTAGE [V]

Output Voltage Low

5.5V

AMBIE NT TEMPER ATURE [℃]

(VOUT=VDD-0.4[V])

(*)The above data is ability value of sample, it is not guaranteed. BU7481G: -40[℃] ~ +85[℃] BU7481SG: -40[℃] ~ +105[℃]

BU7481 famil

85

1000

80 0

60 0

40 0

20 0

PO WER D ISS IPATION [mW] .

0

0 5 0 100 150

AMBIEN T TEMP ERATURE [℃]

BU7481SG

Derating curve

5.5V

BU7481 famil

1.8V

℃

]

6

5

4

3

2

OUT PUT VOLTAG E HIGH [V]

1

0

123456

85℃

-40℃

SUPPL Y VOLTAGE [V]

Output Voltage High

Supply Voltage (RL=10[kΩ])

BU7481 famil

105℃

25℃

15

10

1.8V

5

OUTPUT VOLTAGE LOW [mV]

0

-60-30 0 30 60 90120
A MBIENT TE MPE RATUR E [℃]

Output Voltage Low – Ambient

Temperature (RL=10[kΩ])

BU7481 famil

3.0V

1.8V

80

60

40

20

OUT PUT SINK CURRENT [ mA]

0

25℃

85℃

0.0 0. 5 1. 0 1. 5 2.0 2. 5 3. 0

OUT PUT VOL TAGE [V ]

Output Sink Current – Output Voltage

(VDD=3[V])

BU7481 famil

105

BU7481 famil

105℃

25℃

BU7481 famil

5.5V 3.0V

BU7481 famil

-40℃

℃

1

800

600

400

200

SUPP LY CURRENT [μA]

0

1 23456

85℃

25℃

SUPPLY VOLTAGE [ V]

Supply Current

6

5

4

3

2

1

OUT PUT VOLTAG E HIGH [V]

0

-60 - 30 0 30 60 9 0 1 20

3.0V

1.8V

AMBIEN T TEMPERAT URE [℃]

Output Voltage High

Ambient Temperature (RL=10[kΩ])

50

40

-40℃

30

20

10

105℃

OUTP UT SOURCE CURRENT [mA]

0

00.511.522.53

85℃

OUTPUT VOLTAGE [V]

Output Source Current – Output

Voltage (VDD=3[V])

50

40

30

20

3.0V

10

OUTPU T SINK CU RRENT [m A]

1.8V

0

-60 - 30 0 30 6 0 90 120

AMBIEN T TEMPER ATURE[℃]

Output Sink Current – Ambient Temperature

(VOUT=VSS+0.4[V])

BU7481 famil

105℃

-40℃

Supply Voltage

BU7481 family

5.5V

BU7481 family

25℃

5.5V

BU7481 famil

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

14/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

y

–

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Reference Data (BU7481 family)

10

8

6

4

2

0

-2

-4

-6

INPU T OFFSET V OLTAG E [mV]

-8

-10
123456

Fig.82 Fig.83 Fig.84

Input Offset Voltage – Supply Voltage

(Vicm=VDD-1.2[V], VOUT=1.5[V])

160

140

120

100

80

60

40

20

LARGE SIGNAL VOLTAGE GAIN [d B]

0

1 234 56

Fig.85 Fig.86 Fig.87

120

100

80

60

40

20

COMMON MODE REJECTI ON RATIO [dB]

0

-6 0 -3 0 0 30 6 0 90 120

Fig.88 Fig.89 Fig.90

Common Mode Rejection Ratio

6.0

5.0

4.0

3.0

2.0

SLEW RATE H-L [V/μs]

1.0

0.0

-60-30 0 306090120

Fig.91 Fig.92

Slew Rate H-L

105℃

85℃

INPUT VOLTAGE [V]

85℃

105℃

SUPPLY VOLTAG E [ V]

Large Signal Voltage Gain

– Supply Voltage

1.8V 3.0V

AMBIENT TEMPERATURE [℃]

– Ambient Temperature

AMBIENT TEMPERATURE [℃]

Ambient Temperature

(*)The above data is ability value of sample, it is not guaranteed. BU7481G: -40[℃] ~ +85[℃] BU7481SG: -40[℃] ~ +105[℃]

-40℃ 25℃

-40℃ 25℃

BU7481 family

5.5V

3.0V

BU7481 famil

BU7481 family

5.5V

BU7481 famil

1.8V

10.0

7.5

5.0

5.5V

2.5

0.0

-2.5

-5.0

INPUT OF FSET VOLT AGE [mV]

-7.5

-1 0.0

-60-300 306090120
A MB I EN T TE M PE RA T UR E [℃]

1.8V

3.0V

Input Offset Voltage – Ambient Temperature

(Vicm=VDD-1.2[V], VOUT=1.5[V])

16 0

14 0

3.0V

12 0

10 0

80

LARGE SIGNAL VOL TA GE GA IN [dB ]

60

1.8V

-60-30 0 30 60 90120
AMBIE NT TE MPE RATUR E [℃]

BU7481 family

5.5V

Large Signal Voltage Gain

– Ambient Temperature

140

120

100

80

60

40

20

P OWE R S UPP LY RE JEC TIO N RA TI O [d B]

0

-60 -30 0 30 60 90 120
AMBIE NT TEMPER ATURE [℃]

BU7481 famil

Power Supply Rejection Ratio

– Ambient Temperature

100

80

60

GAIN [dB]

40

20

0

1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E +06 1.E +07 1.E +08

Phase

Gain

FREQUENCY [Hz]

BU7481 family

20 0

15 0

10 0

50

0

Voltage Gain－Frequency

10

8

6

4

2

0

-2

-4

-6

INPU T OFFSET V OLTAG E [mV]

-8

-10

-10123

Input Offset Voltage – Input Voltage

120

100

80

60

40

20

COMMON MODE REJECTION RATIO [dB]

0

12 3456

Common Mode Rejection Ratio

– Supply Voltage (VDD=3[V])

5.0

4.0

3.0

2.0

SLEW RA TE L-H [V/μs]

1.0

0.0

5.5V

-60-300306090120
AMBIEN T TEMPER ATURE [℃]

Ambient Temperature

PHASE [d eg]

Technical Note

105℃

85℃

25℃

-40℃

INPU T VOLTA GE [V ]

(VDD=3[V])

-40℃

25℃ 85℃ 105℃

SUPPLY VOLTA GE [V]

1.8V

Slew Rate L-H

BU7481 familyBU7481 famil

BU7481 famil

BU7481 family

3.0V

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

15/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

y

y

y

y

y

–

–

–

–

–

–

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Reference Data (BU7485 family)

85

5.5V

3.0V

4.0V

3.0V

BU7485 famil

BU7485 famil

BU7485 famil

25℃ 85℃

-40℃

BU7485 famil

800

600

400

200

POWER DISSIP ATION [ mW] .

0

0 5 0 100 150

BU7485SG

AMBIEN T TEMPER ATURE [℃]

BU7485 famil

105

Derating curve

6

5

4

3

2

1

OUT PUT VOL TA GE HIGH [V]

0

23456

105℃

85℃

-40℃

S UPPLY VOLT AG E [V]

BU7485 famil

25℃

Output Voltage High

Supply Voltage (RL=10[kΩ])

20

15

10

5

O UTPU T VOLT AGE LOW [mV]

0

-60-30 0 30 60 90120
AMBIE NT TE MPERATUR E [℃]

BU7485 famil

5.5V

4.0V

3.0V

Output Voltage Low

Ambient Temperature (RL=10[kΩ])

80

70

60

50

40

30

20

OUT PUT SINK C URRENT [ mA]

10

0

0.00.51.01.52.02.53.0

-40℃ 25℃

OUT PUT VOL TAGE [V ]

BU7485 family

85℃ 105℃

Output Sink Current – Output Voltage

(VDD=3[V])

4

3

2

1

SUPPLY CUR RENT [ μA]

0

2.533.544.555.56

Supply Current

6

5

4

3

2

1

O UTPUT VOLTAGE HI GH [V]

0

-60-300 306090120
AMBIE NT TEM PERAT UR E [℃]

Ambient Temperature (RL=10[kΩ])

50

40

-40℃

30

20

10

OUTP UT SOURCE CURRENT [mA]

0

00.51 1.52 2.5 3

Output Source Current

Output Voltage (VDD=3[V])

40

30

20

10

OUTPUT SINK CURRENT [mA]

0

-60-30 0 30 60 90120
A MBIEN T TEMP ERAT URE [℃]

Output Sink Current – Ambient Temperature

(VOUT=VSS+0.4[V])

800

600

400

200

POWER DISSIP ATION [m W] .

0

050100150

Fig.93 Fig.94 Fig.95

4

3

2

1

SUPPLY CURRENT [mV ]

0

-60-30 0 306090120

Fig.96 Fig.97 Fig.98

Ambient Temperature

20

15

10

5

OUT PU T VOLTAG E LO W [ mV]

0

2.5 3 3 .5 4 4.5 5 5.5 6

Fig.99 Fig.100 Fig.101

Supply Voltage (RL=10[kΩ])

20

15

10

5

OUTPUT SOURCE CURRENT [mA]

0

-60-30 0 306090120

Fig.102 Fig.103 Fig.104

Output Source Current –Ambient Temperature

BU7485G

AMBIEN T TEMPER ATURE [℃]

Derating curve

4.0V

SUPPL Y VOLTAG E [V]

Supply Current

105℃

SUPPLY VOLTAGE [ V ]

Output Voltage Low

5.5V

AMBIEN T TEMPER ATURE [℃]

(VOUT=VDD-0.4[V])

(*)The above data is ability value of sample, it is not guaranteed. BU7485G: -40[℃] ~ +85[℃] BU7485SG: -40[℃] ~ +105[℃]

Technical Note

BU7485 famil

85℃

-40℃

SUPP LY VOLTAG E [V]

5.5V

3.0V

Output Voltage High

25℃

OUT PUT VOLTAG E [V]

4.0V

3.0V

105℃

25℃

Supply Voltage

BU7485 family

4.0V

BU7485 family

85℃ 105℃

BU7485 famil

5.5V

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

16/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

–

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Reference Data (BU7485 family)

10 .0

7.5

5.0

2.5

0.0

-2 .5

-5 .0

INPU T OFFSET VO LTAGE [mV]

-7 .5

-10.0

23456

Fig.105 Fig.106 Fig.107

Input Offset Voltage – Supply Voltage

(Vicm=VDD-1.4[V], VOUT=1.5[V])

140

120

100

80

60

40

20

LAR GE SIGN AL VOLTAG E GAI N [dB]

0

120

100

80

60

40

20

COM MON MO DE REJE CT IO N R AT IO [ d B]

0

Fig.111 Fig.112 Fig.113

30. 0

25. 0

20. 0

15. 0

10. 0

SLEW RATE H-L [V/μs]

5. 0

0. 0

Fig.114 Fig.115

Slew Rate H-L – Ambient Temperature

85℃

SUPPL Y VOLTAG E [V]

105℃

23456

Fig.108 Fig.109 Fig.110

S UPPLY V OLTAG E [V]

Large Signal Voltage Gain

– Supply Voltage

4.0V

3.0V

-60 -30 0 30 60 90 120
AMBIENT T EMPERATURE [℃]

Common Mode Rejection Ratio

– Ambient Temperature

-60-30 0 306090120
A MBIEN T TEMP ERAT URE [℃]

105℃

85℃

5.5V

-40℃

5.5V

4.0V

3.0V

BU7485 famil

-40℃ 25℃

BU7485 famil

25℃

BU7485 family

BU7485 family

10.0

7.5

5.0

2.5

0.0

-2.5

-5.0

INPUT OFFSET VOLTAGE [mV]

-7.5

-1 0.0

-60 - 30 0 30 60 90 120

5.5V

3.0V

AMBIEN T TEMPER ATURE [℃]

Input Offset Voltage – Ambient Temperature

(Vicm=VDD-1.4[V], VOUT=1.5[V])

160

140

120

100

80

LAR GE SIGN AL VOLTAGE GAI N [dB]

60

-60 -30 0 30 60 90 120

5.5V

AMBIEN T TEM PERATURE [℃]

Large Signal Voltage Gain

– Ambient Temperature

120

100

80

60

40

20

POWER SU PPL Y REJEC TI ON RATI O [ dB]

0

-60-30 0 30 60 90120
AMBIENT T EMPERAT URE [℃]

Power Supply Rejection Ratio

– Ambient Temperature

100

80

60

GAIN [dB]

40

20

0

1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 1.E+08

Phase

Gain

FREQUENCY[Hz]

Voltage Gain－Frequency

(*)The above data is ability value of sample, it is not guaranteed. BU7485G: -40[℃] ~ +85[℃] BU7485SG: -40[℃] ~ +105[℃]

4.0V

BU7485 family

4.0V

BU7485 family

3.0V

BU7485 famil

BU7485 family

200

150

100

50

0

PHASE [deg]

15

10

5

0

-5

-1 0

INPU T OFFS ET VO LTAGE [mV ]

-1 5

120

100

80

60

40

20

COMMON MODE REJECTION RATIO [dB]

12 .0

10 .0

8.0

6.0

4.0

SLEW RATE L- H [V/μs]

2.0

0.0

Technical Note

BU7485 family

85℃ 105℃

-40℃

-1 0 1 2 3

Input Offset Voltage – Input Voltage

0

23456

Common Mode Rejection Ratio

Supply Voltage (VDD=3[V])

-60-30 0 306090120
AMBIE NT TEM PERATUR E [

25℃

INPU T VOLTAG E [V ]

25℃

-40℃

BU7485 famil

85℃

105℃

BU7485 family

4.0V

℃

(VDD=3[V])

SUPPL Y VOLTAGE [V]

5.5V

3.0V

Slew Rate L-H

Ambient Temperature

]

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

17/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

y

y

y

y

y

y

–

–

–

–

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Reference Data (BU5281 family)

100 0

800

600

400

200

PO WER DI SSIPATIO N [mW] .

0

050100150

Fig.116 Fig.117 Fig.118

1

0. 8

0. 6

0. 4

SUPPL Y CURREN T [mA ]

0. 2

0

-60-30 0 30 60 90120

Fig.119 Fig.120 Fig.121

– Ambient Temperature

20

15

10

5

OUT PU T VOLTAG E LO W [ mV]

0

1234 56

Fig.122 Fig.123 Fig.124

Supply Voltage (RL=10[kΩ])

80

60

40

20

OUTPUT SOURCE CURRENT [mA]

0

-6 0 - 30 0 30 6 0 90 120

Fig.125 Fig.126 Fig.127

Output Source Current –Ambient Temperature

BU5281G

AMBI EN T TE MPERA TURE [℃]

Derating curve

A MBIENT TE MPE RATUR E [℃]

Supply Current

-40℃

25℃ 85℃

SUPP LY VOLTAGE [V]

Output Voltage Low

1.8V

AMBIE NT TEMPER ATURE [

(VOUT=VDD-0.4[V])

(*)The above data is ability value of sample, it is not guaranteed. BU5281G: -40[℃] ~ +85[℃] BU5281SG: -40[℃] ~ +105[℃]

85

1.8V

5.5V

BU5281 famil

BU5281 famil

5.5V

3.0V

BU5281 famil

105℃

BU5281 famil

3.0V

℃

1000

80 0

60 0

40 0

20 0

PO WER D ISSIPAT IO N [ mW] .

0

050100150

BU5281SG

AMBIEN T TEMPER ATURE [℃]

BU5281 famil

105

1

0. 8

0. 6

0. 4

SUPPLY CURRENT [μA]

0. 2

0

12 345 6

Derating curve

6

5

4

3

2

1

OUTPUT V OLTAGE H IGH [V]

0

12 34 56

85℃

SUPPL Y VOLTAGE [V]

BU5281 family

105℃

25℃

-40℃

Output Voltage High

Supply Voltage (RL=10[kΩ])

20

15

10

5

O UTP UT VOL TAGE LOW [mV]

0

-60-30 0 30 60 90120

1.8V 5.5V 3.0V

AMBIENT TEMPERATURE [℃]

BU5281 famil

Output Voltage Low

Ambient Temperature (RL=10[kΩ])

80

60

40

20

OUT PUT SINK CURRENT [mA]

]

-40℃

0

0.0 0.5 1.0 1.5 2.0 2.5 3.0

25℃

OUT PUT VOL TAGE [ V ]

BU5281 famil

85℃ 105℃

Output Sink Current – Output Voltage

Supply Current

6

5

4

3

2

1

OUTPUT V OLTAGE H IGH [V]

0

-60 -30 0 30 60 90 120
AMBIEN T TEMPER ATURE [℃]

Output Voltage High

Ambient Temperature (RL=10[kΩ])

40

30

20

10

OUTPUT SOURCE CURRENT [mA]

0

-40℃

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Output Source Current

– Output Voltage (VDD=3[V])

60

50

40

30

20

1.8V

10

OUTPUT SINK CURRENT [mA]

0

-60 - 30 0 3 0 60 90 120

AMBI ENT TEMPERATURE[

Output Sink Current – Ambient Temperature

(VDD=3[V])

Technical Note

BU5281 famil

105℃

SUPP LY VOLTAGE [V]

105℃

OUT PUT VOL TAGE [ V ]

3.0V

(VOUT=VSS+0.4[V])

85℃

-40℃ 25℃

Supply Voltage

BU5281 family

5.5V

3.0V

1.8V

BU5281 famil

25℃

85℃

BU5281 famil

5.5V

℃

]

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

18/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

y

y

y

y

y

y

y

–

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Reference Data (BU5281 family)

10 .0

7.5

5.0

2.5

0.0

-2 .5

-5 .0

-7 .5

INPU T OFFSET VOLTAGE [mV]

-10.0
123456

-40℃ 25℃

SUPPL Y VOLT AGE[ V]

Fig.128 Fig.129 Fig.130

Input Offset Voltage – Supply Voltage

(Vicm=VDD-1.2[V], VOUT=1.5[V])

16 0

14 0

12 0

10 0

80

60

40

20

LARGE SIGNAL VOLTAGE GA IN [dB ]

0

-40℃

85℃

123456

AMBIENT TEMPERATURE [℃]

Fig.131 Fig.132 Fig.133

Large Signal Voltage Gain

– Supply Voltage

12 0

10 0

80

60

40

20

C OMM ON MO DE REJ EC TI ON RA TIO [ dB]

0

-6 0 -30 0 30 60 9 0 1 20

3.0V

AMBIE NT TEMPER ATURE [℃]

Fig.134 Fig.135 Fig.136

Common Mode Rejection Ratio

– Ambient Temperature

10.0

5.5V

8.0

6.0

4.0

SLEW RATE H-L [V/μs]

2.0

0.0

-60 -30 0 30 60 90 120

1.8V

AMBIE NT TEM PERAT URE [℃]

Fig.137 Fig.138

Slew Rate H-L – Ambient Temperature

BU5281 family

85℃ 105℃

10 .0

7.5

5.0

2.5

0.0

-2 .5

-5 .0

INPU T OFFSET VOLTAGE [mV]

-7 .5

-10.0

-60 -30 0 30 60 90 120

3.0V

1.8V

AMBIE NT TEMPER ATURE [℃]

Input Offset Voltage – Ambient Temperature

(Vicm=VDD-1.2[V], VOUT=1.5[V])

BU5281 family

105℃

25℃

16 0

14 0

12 0

10 0

80

60

40

20

LARGE SIGNAL VOL TAGE GA IN [dB ]

5.5V

1.8V

0

-60-30 0 30 60 90120
AMBIEN T TEMPER ATURE [℃]

Large Signal Voltage Gain

– Ambient Temperature

BU5281 famil

5.5V

1.8V

150

120

90

60

30

P O WER S UP P LY RE JE CT I O N RA T I O [dB ]

0

-60 -30 0 30 60 90 1 20
AMBIEN T TEMPER ATURE [℃]

Power Supply Rejection Ratio

– Ambient Temperature

BU5281 famil

3.0V

100

80

60

GAIN [d B]

40

20

0

1.E+001.E+011.E+021.E+031.E+041.E+051.E+061.E+071.E+08

Phase

Gain

FREQUENCY [Hz]

Voltage Gain－Frequency

(*)The above data is ability value of sample, it is not guaranteed. BU5281G: -40[℃] ~ +85[℃] BU5281SG: -40[℃] ~ +105[℃]

5.5V

3.0V

BU5281 famil

BU5281 family

BU5281 family

BU5281 famil

20 0

15 0

10 0

50

0

15

10

-10

INPU T OFFSE T VOLT AGE [m V]

-15

12 0

10 0

COMMON MODE REJECTION RATIO [dB]

4.0

3.0

2.0

1.0

SLEW RATE L-H [V/μs]

0.0

PHASE [deg]

Technical Note

BU5281 famil

-40℃

25℃

85℃

5

0

-5

-10123
INPU T VOLT AGE [V]

Input Offset Voltage – Input Voltage

-40℃

80

60

40

20

0

1234 56

25℃

SUPPLY VOLTAGE [V]

Common Mode Rejection Ratio

Supply Voltage (VDD=3[V])

-60 -30 0 30 60 90 120
AMBIEN T TEMPER ATURE [℃]

Slew Rate L-H –

Ambient Temperature

105℃

(VDD=3[V])

85℃

5.5V

3.0V

1.8V

BU5281 famil

105℃

BU5281 famil

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

19/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Test circuit 1 NULL method
○Input-Output Full Swing BU7291/BU7255 family

Parameter VF S1 S2 S3 VDD VSS EK Vicm

Input Offset Voltage

VF1 ON ON OFF 3 0 -1.5 3 1

Technical Note

VDD, VSS, EK, Vicm Unit:[V]

Calculation

Large Signal Voltage Gain

VF2

VF3 -2.5

Common-mode Rejection Ratio
(Input Common-mode Voltage Range)

Power Supply Rejection Ratio

VF4

VF5 3

VF6

VF7 5.5

○Ground Sense BU7495/BU7481/BU7485/BU5281 family

Parameter VF S1 S2 S3 VDD VSS EK Vicm

Input Offset Voltage

Large Signal Voltage Gain

Common-mode Rejection Ratio
(Input Common-mode Voltage Range)

BU7495/BU7481/BU5281
Power Supply
Rejection Ratio

BU7485

VF1 ON ON OFF 3 0 -1.5 1.8 1

VF2

VF3 -2.5

VF4

VF5 1.8

VF6

VF7 5.5

－Calculation－

1. Input Offset Voltage (Vio)

2. Large Signal Voltage Gain (Av)

3 Common-mode Rejection Ratio (CMRR)

4. Power Supply Rejection Ratio (PSRR)

RS=50[Ω]

SW1

Ri=1[MΩ]

VDD

0.015[µF]

RS=50[Ω]

Vicm

50[kΩ]

0.015[µF]

Ri=1[MΩ]

SW2

DUT

VSS

Fig.139 Test circuit 1 (one channel only)

ON ON ON 3 0

-0.5

ON ON OFF 3 0 -1.5

ON ON OFF

2.4
0 -1.2 0 4

VDD, VSS, EK, Vicm Unit:[V]

ON ON ON 3 0

ON ON OFF 3 0 -1.5

1.8

ON ON OFF

Vio

=

1+Rf/Rs

Av

20Log

=

CMRR

=

PS RR

=

0.1[µF]

Rf=50[kΩ]

EK

Vo

SW3

RL

VRL

|V F1|

2×(1+Rf/Rs)

20Log

20Log

500[kΩ]

500[kΩ]

1000[pF]

3.0

[V]

|VF2-V F3|

ΔVicm×(1+Rf/Rs)

1.8×(1+Rf/Rs)

|VF4-V F5|

ΔVDD×(1+Rf/Rs)

3.8×(1+Rf/Rs)

|VF6-V F7|

0 -0.9 0 4

[dB]

[dB]

[dB]

[dB]

[dB]

0.01[µF]

15[V]

NULL

-15[V]

1.5 2

0

Calculation

-0.5

0.9 2

0

VF

V

3

3

www.rohm.com

© 2010 ROHM Co., Ltd. All rights reserved.

20/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

Technical Note

●Test circuit 2 switch condition

SW No.

SW 1 SW2 SW3 SW4 SW5 SW6 SW7 SW 8 SW 9 SW

10 SW11SW12

Supply Current OFF OFF ON OFF ON OFF OFF OFF OFF OFF OFF OFF

Maximum Output Voltage (RL=10[kΩ]) OFF ON OFF OFF ON OFF OFF ON OFF OFF ON OFF

Output Current OFF ON OFF OFF ON OFF OFF OFF OFF ON OFF OFF

Slew Rate OFF OFF ON OFF OFF OFF ON OFF ON OFF OFF ON

Maximum Frequency ON OFF OFF ON ON OFF OFF OFF ON OFF OFF ON

SW3

SW4

R2 100[kΩ]

VDD=3[V]

SW1

R1

1[kΩ]

SW2

SW5 SW6 SW7

VIN-

VIN+

－

＋

SW12

SW11

Vo

GND

SW8

SW9 SW10

RL

CL

Fig.140 Test circuit 2

VIN

3[V]

[V]

VOUT

3[V]

[V]

SR = ΔV /Δt

V

3[V

P-P

]

Δ

t

0[V]

t

0[V]

Δ

Fig.141 Slew rate input output wave

(Input-Output Full Swing BU7291/BU7255 family)

VIN

1.8[V]

[V]

VOUT

1.8[V]

[V]

SR = ΔV /Δt

1.8[V

P-P

]

0[V]

t

Fig.142 Slew rate input output wave

(Ground Sense BU7495/BU7481/BU7485/BU5281 family)

0[V]

Δ

t

Δ

V

t

t

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21/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

A

A

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Test circuit 3 Channel Separation

R2=100[kΩ]

R2=100[kΩ]

R1=1[kΩ]

VDD

R1=1[kΩ]

VIN

R1//R2

VSS

V

～

VOUT1
=1[Vrms]

R1//R2

CS=20Log

Fig.143 Test circuit 3

●Schematic Diagram
○Input-Output Full Swing BU7291/BU7255 family

VDD

Vbias

IN

+

class

IN

－

B control

VSS

Fig.144 Input-Output Full Swing Schematic Diagram

Vbias

○Ground Sense BU7495/BU7481/BU7485/BU5281 family

VDD

Vbias

IN

+

class

IN

‐

B control

VSS

Fig.145 Ground Sense Schematic Diagram

Vbias

OUT

OUT

VDD

VSS

100 × VOUT1

VOUT2

Technical Note

V

～

VOUT2

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22/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Examples of circuit
○Voltage follower

Vin

○Inverting amplifier

Vin

○Non-inverting amplifier

R1

Fig.147 Inverting amplifier circuit

R1

Vin

Fig.148 Non-inverting amplifier circuit

Fig.146 Voltage follower

R1//R2

VDD

Vout

VSS

R2

VDD

Vout

VSS

R2

VDD

Vout

VSS

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

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23/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,

A

A

BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

Technical Note

●Derating Curve
Power dissipation (total loss) indicates the power that can be consumed by IC at Ta=25℃(normal temperature).IC is heated
when it consumed power, and the temperature of IC ship becomes higher than ambient temperature. The temperature that
can be accepted by IC chip depends on circuit configuration, manufacturing process, and consumable power is limited.
Power dissipation is determined by the temperature allowed in IC chip (maximum junction temperature) and thermal
resistance of package (heat dissipation capability). The maximum junction temperature is typically equal to the maximum
value in the storage package (heat dissipation capability). The maximum junction temperature is typically equal to the
maximum value in the storage temperature range. Heat generated by consumed power of IC radiates from the mold resin or
lead frame of the package. The parameter which indicates this heat dissipation capability (hardness of heat release) is called
thermal resistance, represented by the symbol θj-a[℃/W]. The temperature of IC inside the package can be estimated by
this thermal resistance.
Fig.149 (a) shows the model of thermal resistance of the package. Thermal resistance θja, ambient temperature Ta, junction
temperature Tj, and power dissipation Pd can be calculated by the equation below:
θja = (Tj－Ta) / Pd [℃/W] ・・・・・ (Ⅰ)
Derating curve in Fig.149 (b) indicates power that can be consumed by IC with reference to ambient temperature. Power that
can be consumed by IC begins to attenuate at certain ambient temperature. This gradient is determined by thermal
resistance θja. Thermal resistance θja depends on chip size, power consumption, package, ambient temperature, package
condition, wind velocity, etc even when the same of package is used. Thermal reduction curve indicates a reference value
measured at a specified condition. Fig.150(c)-(d) show a derating curve for an example of BU7291 family, BU7255 family, ,
BU7495 family , BU7481 family , BU7485 family , BU5281 family.

θja

(Tj

Ta) / P d [

=

－

mbient temperature

/ W]

℃

Ta [℃ ]

Package face temperature

Ta [℃]

P2

P1

Chip surface temperature

(a) Thermal resistance

Tj[

℃

Pd[W]

]

Power dissipation of IC

(a) Thermal resistance

1000

800

600

400

Fig.149 Thermal resistance and derating

BU7291G(*20)

540[mW]

BU7481G(*20)

BU7485G(*20)

BU5281G(*20)

BU7255HFV(*21)

535[mW]

BU7495HFV(*21)

[W]

Pd(max)

θja1

0

25 125

mbient temperature Ta[ ℃]

75 100

(b) Derating curve

1000

800

600

400

θja2 <θja1

θja2

540[mW]

535[mW]

50

BU7291SG(*20)

BU7481SG(*20)

BU7485SG(*20)

BU5281SG(*20)

BU7255SHFV(*21)

BU7495SHFV(*21)

Tj(max)

200

POWER DISSIPATION [mW]

0

0 50 100 150

AMBIEN T TEM PERAT URE[℃]

85

(c) BU7291G BU7481G BU7485G

BU5281G BU7255HFV BU7495HFV

200

POW ER DISSIPAT ION [m W ]

0

0 50 100 150

AMBIEN T T EMPERATUR E[℃]

105

(d) BU7291SG BU7481SG BU7485SG

BU5281SG BU7255SHFV BU7495SHFV

When using the unit above Ta=25[℃], subtract the value above per degree[℃]. Permissible dissipation is the value
when FR4 glass epoxy board 70[mm]×70[mm]×1.6[mm] (cooper foil area below 3[%]) is mounted

(*20) (*21) Unit

5.4 5.35 [mW/℃]

Fig.150 Derating Curve

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24/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Notes for Use

1) Absolute maximum ratings
Absolute maximum ratings are the values which indicate the limits, within which the given voltage range can be safely
charged to the terminal. However, it does not guarantee the circuit operation.

2) Applied voltage to the input terminal
For normal circuit operation of voltage comparator, please input voltage for its input terminal within input common mode
voltage VDD + 0.3[V]. Then, regardless of power supply voltage, VSS-0.3[V] can be applied to input terminals without
deterioration or destruction of its characteristics.

3) Operating power supply (split power supply/single power supply)
The operational amplifier operates if a given level of voltage is applied between VDD and VSS. Therefore, the operational
amplifier can be operated under single power supply or split power supply.

4) Power dissipation (Pd)
If the IC is used under excessive power dissipation. An increase in the chip temperature will cause deterioration of the
radical characteristics of IC. For example, reduction of current capability. Take consideration of the effective power
dissipation and thermal design with a sufficient margin. Pd is reference to the provided power dissipation curve.

5) Output short circuit
If short circuit occurs between the output terminal and VDD terminal, excessive in output current may flow and generate
heat, causing destruction of the IC. Take due care.

6) Using under strong electromagnetic field
Be careful when using the IC under strong electromagnetic field because it may malfunction.

Technical Note

7) Usage of IC
When stress is applied to the IC through warp of the printed circuit board, The characteristics may fluctuate due to the
piezo effect. Be careful of the warp of the printed circuit board.

8) Testing IC on the set board
When testing IC on the set board, in cases where the capacitor is connected to the low impedance, make sure to
discharge per fabrication because there is a possibility that IC may be damaged by stress. When removing IC from the set
board, it is essential to cut supply voltage. As a countermeasure against the static electricity, observe proper grounding
during fabrication process and take due care when carrying and storage it.

9) The IC destruction caused by capacitive load
The transistors in circuits may be damaged when VDD terminal and VSS terminal is shorted with the charged output
terminal capacitor.When IC is used as a operational amplifier or as an application circuit, where oscillation is not activated
by an output capacitor,the output capacitor must be kept below 0.1[μF] in order to prevent the damage mentioned above.

10) Decupling capacitor
Insert the decupling capacitance between VDD and VSS, for stable operation of operational amplifier.

11) Latch up
Be careful of input voltage that exceed the VDD and VSS. When CMOS device have sometimes occur latch up operation.
And protect the IC from abnormaly noise.

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25/26

2010.12 - Rev.

A

BU7291G,BU7291SG,BU7255HFV,BU7255SHFV,
BU7495HFV,BU7495SHFV,BU7481G,BU7481SG,BU7485G,BU7485SG,BU5281G,BU5281SG

●Ordering Part Number

B U 7 4 9 5 S H F V - T R

Technical Note

Part No. Part No.

SSOP5

+0.2

2.8±0.2

1.6

1.25Max.

1.1±0.05

HVSOF5

1.6±0.05

0.6MAX

±0.05

1.2

+0.03

0.02

(MAX 1.28 include BURR)

−0.02

1.6±0.05

1.0

(0.05)

0.5

Input-Output Full Swing
7291 , 7291S , 7255 , 7255S
Ground Sense
7495 , 7495S , 7481 , 7481S
7485 , 7485S , 5281 , 5281S

°

1

S

+0.05

−0.04

M

+

6

°

4

°

−4

+0.05

0.13

−0.03

(Unit : mm)

0.2MAX

0.13±0.05

(Unit : mm)

0.2Min.

<Tape and Reel information>

2.9±0.2

5

4

−0.1

12

3

(0.91)

S

(0.41)

0.1 S

0.42

0.1 S

(0.8)

(0.3)

45

32

0.08

0.05±0.05

5

0.95

±0.05

4

321

0.22±0.05

Package

G: SSOP5
HFV: HVSOF5

<Tape and Reel information>

Embossed carrier tapeTape

Quantity

Direction
of feed

Quantity

Direction
of feed

3000pcs
TR

The direction is the 1pin of product is at the upper right when you hold

()

reel on the left hand and you pull out the tape on the right hand

Reel

Embossed carrier tapeTape
3000pcs

TR

The direction is the 1pin of product is at the upper right when you hold

()

reel on the left hand and you pull out the tape on the right hand

Reel

Packaging and forming specification
TR: Embossed tape and reel

1pin

Direction of feed

Order quantity needs to be multiple of the minimum quantity.

∗

1pin

Direction of feed

Order quantity needs to be multiple of the minimum quantity.

∗

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26/26

2010.12 - Rev.

Notes

No copying or reproduction of this document, in par t or in whole, is permitted without the
consent of ROHM Co.,Ltd.

The content specied herein is subject to change for improvement without notice.

The content specied herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specications,
which can be obtained from ROHM upon request.

Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.

Great care was taken in ensuring the accuracy of the information specied in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.

The technical information specied herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.

Notice

The Products specied in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, ofce-automation equipment, commu­nication devices, electronic appliances and amusement devices).

The Products specied in this document are not designed to be radiation tolerant.

While ROHM always makes effor ts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.

Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, re or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, re control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.

The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injur y (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel­controller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.

If you intend to export or ship overseas any Product or technology specied herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.

Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.

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R1010

A