ROHM’s Selection Operational Amplifier/Comparator Series
Comparators: Low Voltage CMOS
BU7251G,BU7251SG,BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
No.09049EAT06
●Description CMOS comparator BU7251/BU7231family and BU7252/BU7232 family are input full swing and push pull output comparator. These ICs integrate one op-amp or two independent op-amps and phase compensation capacitor on a single chip. The features of these ICs are low operating supplyVoltage that is +1.8V to +5.5V(single supply) and low supply current, extremely low input bias current.
High speed Single Dual
BU7251 G
(BU7251SG:105 ℃)
BU7252 F/FVM
(BU7252S F/FVM:105 ℃)
Low power
Single Dual
BU7231 G
(BU7231SG:105 ℃)
BU7232 F/FVM
(BU7232S F/FVM:105 ℃)
●Features 1) Low operating supply voltage (+1.8[V]～+5.5[V]) 2) +1.8 [V]～+5.5[V](single supply) ±0.9[V]～±2.75[V](split supply) 3) Input and Output full swing 4) Push-pull output type 5) High speed operation (BU7251 family, BU7252 family) 6) Low supply current (BU7231 family, BU7232 family) 7) Internal ESD protection Human body model (HBM) ±4000[V](Typ.) 8) Wide temperature range -40[℃]～+85[℃] (BU7251G,BU7252 family, BU7231G, BU7232 family) -40[℃]～+105[℃] (BU7251SG,BU7252S family, BU7231SG,BU7232S family)
● Pin Assignments
IN- 1 VSS 2 IN+ 3
－
5
VDD
OUT1 1 IN1- 2 IN1+ 3 -+ +CH2 CH1
8 VDD 7 OUT2 6 IN25 IN2+
＋
4
OUT
VSS 4
SSOP5 BU7251G BU7251SG BU7231G BU7231SG
SOP8 BU7252F BU7252SF BU7232F BU7232SF
MSOP8 BU7252FVM BU7252SFVM BU7232FVM BU7232SFVM
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1/18
2009.05 - Rev.A
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ●Absolute maximum ratings (Ta=25[℃]) Parameter Supply Voltage Differential Input Voltage (*1) Input Common-mode voltage range Operating Temperature Storage Temperature Maximum junction Temperature Symbol VDD-VSS Vid Vicm Topr Tstg Tjmax
Technical Note
Rating BU7251G,BU7252 F/FVM BU7251SG,BU7252S F/FVM BU7231G,BU7232 F/FVM BU7231SG,BU7232S F/FVM +7 VDD-VSS (VSS-0.3) to VDD+0.3 -40 to+85 -40 to+105 -55 to+125 +125
Unit V V V ℃ ℃ ℃
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 absoluted 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 then VEE.
●Electrical characteristics ○BU7251 family (Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃]) Guaranteed Limit Temperature BU7251G,BU7251SG Parameter Symbol Unit Condition range Min. Typ. Max. Vio 25℃ mV Input Offset Voltage (*2)(*4) 1 11 Iio 25℃ pA Input Offset Current (*2) 1 Ib 25℃ pA Input Bias Current (*2) 1 Vicm 25℃ V (VDD-VSS)=3[V] Input Common-mode voltage Range 0 3 AV 25℃ dB RL=10[kΩ] Large Signal Voltage Gain 90 25℃ 15 35 (*4) IDD μA RL=∞ Supply current full range 50 PSRR 25℃ dB Power supply rejection ratio 80 CMRR 25℃ dB Common-mode rejection ratio 80 IOH 25℃ mA VDD-0.4 Output source current (*3) 1 2 IOL 25℃ mA VSS+0.4 Output sink current (*3) 3 6 VOH 25℃ V RL=10[kΩ] High Level Output Voltage (*4) VDD-0.1 VOL 25℃ Low Level Output Voltage (*4) VSS+0.1 V RL=10[kΩ] Tr 25℃ ns CL=15pF 100mV over drive Output rise time 50 Tf 25℃ ns CL=15pF 100mV over drive Output fall time 20 TPLH 25℃ μs CL=15pF 100mV over drive Propagation delay L to H 0.55 TPHL 25℃ μs CL=15pF 100mV over drive Propagation delay H to L 0.25 (*2) (*3) (*4) Abusolute values Reference to power dissipation under the high temperature environment and decide the output current. Continuous short circuit is occurring the degenerate of output current characteristics. Full range BU7251：Ta=-40[℃] to +85[℃] BU7251S：Ta=-40[℃] to +105[℃]
○BU7252 family (Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃]) Guaranteed Limit Temperature BU7252 F/FVM Parameter Symbol Unit Condition BU7252S F/FVM range Min. Typ. Max. Vio 25℃ mV Input Offset Voltage (*2)(*4) 1 11 Iio 25℃ pA Input Offset Current (*2) 1 Ib 25℃ pA Input Bias Current (*2) 1 Vicm 25℃ V (VDD-VSS)=3[V] Input Common-mode voltage Range 0 3 AV 25℃ dB RL=10[kΩ] Large Signal Voltage Gain 90 25℃ 35 65 IDD μA RL=∞ Supply current(*4) full range 80 PSRR 25℃ dB Power supply rejection ratio 80 CMRR 25℃ dB Common-mode rejection ratio 80 IOH 25℃ mA VDD-0.4 Output source current (*3) 1 2 IOL 25℃ mA VSS+0.4 Output sink current (*3) 3 6 VOH 25℃ V RL=10[kΩ] High Level Output Voltage (*4) VDD-0.1 VOL 25℃ Low Level Output Voltage (*4) VSS+0.1 V RL=10[kΩ] Tr 25℃ ns CL=15pF 100mV over drive Output rise time 50 Tf 25℃ ns CL=15pF 100mV over drive Output fall time 20 TPLH 25℃ μs CL=15pF 100mV over drive Propagation delay L to H 0.55 TPHL 25℃ μs CL=15pF 100mV over drive Propagation delay H to L 0.25 (*2) (*3) (*4) Abusolute values Reference to power dissipation under the high temperature environment and decide the output current. Continuous short circuit is occurring the degenerate of output current characteristics. Full range BU7251,BU7252：Ta=-40[℃] to +85[℃] BU7251S,BU7252S：Ta=-40[℃] to +105[℃]
2/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ○BU7231 family (Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃]) Guaranteed Limit Temperature Parameter Symbol BU7231G,BU7231SG range Min. Typ. Max. Input Offset Voltage (*5) Input Offset Current
(*5)
Technical Note
Unit mV pA pA V dB μA dB dB mA mA V V ns ns μs mV VDD-0.4 VSS+0.4
Condition (VDD-VSS)=3[V] RL=10[kΩ] RL=∞ -
Vio Iio Ib Vicm AV IDD PSRR CMRR IOH IOL
(*7)
25℃ 25℃ 25℃ 25℃ 25℃ 25℃ full range 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃
0 1 3 VDD-0.1 -
1 1 1 90 5 80 80 2 6 50 20 1.7 0.5
11 3 15 30 VSS+0.1 -
Input Bias Current (*5) Input Common-mode voltage Range Large Signal Voltage Gain Supply current Power supply rejection ratio Common-mode rejection ratio Output source current (*6) Output sink current (*6) High Level Output Voltage Output rise time Output fall time Propagation delay L to H Propagation delay H to L
(*5) (*6) (*7)
VOH VOL Tr Tf TPLH TPHL
RL=10[kΩ] RL=10[kΩ] CL=15pF 100mV over drive CL=15pF 100mV over drive CL=15pF 100mV over drive CL=15pF 100mV over drive
Low Level Output Voltage (*7)
Abusolute values Reference to power dissipation under the high temperature environment and decide the output current. Continuous short circuit is occurring the degenerate of output current characteristics. Full range BU7231：Ta=-40[℃] to +85[℃] BU7231S,BU7232S：Ta=-40[℃] to +105[℃]
○BU7232 family (Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃]) Guaranteed Limit Temperature BU7232F/FVM Parameter Symbol BU7232S F/FVM range Min. Typ. Max. Input Offset Voltage (*5) Input Offset Current (*5) Input Bias Current
(*5)
Unit mV pA pA V dB μA dB dB mA mA V V ns ns μs mV VDD-0.4 VSS+0.4
Condition (VDD-VSS)=3[V] RL=10[kΩ] RL=∞ -
Vio Iio Ib Vicm AV IDD PSRR CMRR IOH IOL VOH VOL Tr Tf TPLH TPHL
25℃ 25℃ 25℃ 25℃ 25℃ 25℃ full range 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃
0 1 3 VDD-0.1 -
1 1 1 90 10 80 80 2 6 50 20 1.7 0.5
11 3 25 50 VSS+0.1 -
Input Common-mode voltage Range Large Signal Voltage Gain Supply current Power supply rejection ratio Common-mode rejection ratio Output source current Output sink current
(*6) (*6)
High Level Output Voltage (*7) Low Level Output Voltage (*7) Output rise time Output fall time Propagation delay L to H Propagation delay H to L
(*5) (*6) (*7)
RL=10[kΩ] RL=10[kΩ] CL=15pF 100mV over drive CL=15pF 100mV over drive CL=15pF 100mV over drive CL=15pF 100mV over drive
Abusolute values Reference to power dissipation under the high temperature environment and decide the output current. Continuous short circuit is occurring the degenerate of output current characteristics. Full range,BU7232：Ta=-40[℃] to +85[℃] BU7232S：Ta=-40[℃] to +105[℃]
3/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ●Example of electrical characteristics ○BU7251 family BU7251 family
800
Technical Note
800 POWER DISSIPATION [mW] .
BU7251 family
60 50 SUPPLY CURRENT [μA]
BU7251 family
POWER DISSIPATION [mW] .
600
BU7251G
600
BU7251SG
40
85℃
105℃
400
400
30
25℃
20 10
-40℃
200
200
0 0 50 100 AMBIENT TEMPERATURE [℃] 150
0 0 50 100 150 AMBIENT TEMPERATURE [℃]
0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
Fig. 1 Derating Curve
50
BU7251 family
Fig. 2 Derating Curve
Fig. 3 Supply Current – Supply Voltage
8
BU7251 family
6
BU7251 family
OUTPUT VOLTAGE HIGH [V]
SUPPLY CURRENT [μ A]
105℃
OUTPUT VOLTAGE HIGH [V]
40
6
5.5V
4
85℃ 25℃
30
5.5V
4
3.0V 1.8V
20
1.8V 3.0V
2
-40℃
10
2
0 -60
0
0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
-30 0 30 60 90 AM BIENT TEM PERATURE [℃ ]
120
Fig. 4 Supply Current – Ambient Temperature
BU7251 family
Fig. 5 Output Voltage High – Supply Voltage
(RL=10[kΩ])
50 OUTPUT VOLTAGE LOW [mV]
BU7251 family
Fig. 6 Output Voltage High – Ambient Temperature
(RL=10[kΩ])
10 OUTPUT SOURCE CURRENT [mA]
BU7251 family
50
OUTPUT VOLTAGE LOW [mV]
40
40
8
-40℃
30
85℃
105℃
30
5.5V 1.8V
6
25℃
20
20
4
85℃ 105℃
10
-40℃
10
3.0V
25℃
2
0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
0 -60
0
-30
0
30
60
90
120
0.0
0.5
1.0
1.5
2.0
2.5
3.0
AMBIENT TEMPERATURE [℃]
Fig. 7 Output Voltage Low – Supply Voltage
(RL=10[kΩ])
5 OUTPUT SOURCE CURRENT [mA]
BU7251 family
Fig. 8 Output Voltage Low – Ambient Temperature(RL=10[kΩ])
30 25 20 15
105℃ 85℃ BU7251 family
Fig. 9 Output Source Current – Supply Voltage(VDD=3[V])
20 OUTPUT SINK CURRENT [mA]
BU7251 family
OUTPUT VOLTAGE [V]
4
5.5V
OUTPUT SINK CURRENT [mA]
-40℃ 25℃
15
5.5V
3
10
3.0V
2
3.0V 1.8V
10 5 0
1
5
1.8V
0 -60
-30
0
30
60
90
120
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [℃]
OUTPUT VOLTAGE [V]
AMBIENT TEMPERATURE [℃]
Fig. 10 Output Source Current – Ambient Temperature
Fig. 11 Output Sink Current – Output Voltage
(VDD=3[V])
Fig. 12 Output Sink Current – Ambient Temperature
(VOUT=VSS+0.4[V])
(VOUT=VDD-0.4[V]) (*) The above date is ability value of sample, it is not guaranteed.
BU7251G：-40[℃] to+85[℃] BU7251SG：-40[℃] to+105[℃]
4/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ○BU7251 family
10.0 7.5 5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
85℃ 105℃
Technical Note
BU7251 family
BU7251 family
10.0 INPUT OFFSET VOLTAGE [mV] 7.5 5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 -60
5.5V 3.0V
15 INPUT OFFSET VOLTAGE [mV] 10 5
85℃
BU7251 family
INPUT OFFSET VOLTAGE [mV]
105℃
25℃
-40℃
0
-40℃ 25℃
1.8V
-5 -10 - 15
-30 0 30 60 90 AMBIENT TEMPERATURE [℃]
120
-1
0
1 2 3 INPUT VOLTAGE [V]
4
Fig. 13 Input Offset Voltage – Supply Voltage
(Vicm=VDD, Vout=0.1[V])
160 LARGE SIGNAL VOLTAGE GAIN [dB]
BU7251 family
Fig. 14 Input Offset Voltage – Ambient Temperature
(Vicm=VDD, Vout=0.1[V])
COMMON MODE REJECTION RATIO [dB]
Fig. 15 Input offset voltage – Input Voltage
(VDD=3[V])
120 100
85℃ BU7251 family
160 LARGE SIGNAL VOLTAGE GAIN [dB]
BU7251 family
140
140
25℃
80 60 40 20 0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
105℃ -40℃
120
105℃ 85℃
120
3.0V 1.8V
100
-40℃ 25℃
100
5.5V
80
80
60 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
60 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 16 Large Signal Voltage Gain – Supply Voltage
120 100 80
3.0V BU7251 family
Fig. 17 Large Signal Voltage Gain – Ambient Temperature
POWER SUPPLY REJECTION RATIO [dB] 120 100 80 60 40 20 0 -60
BU7251 family
Fig. 18 Common Mode rejection Ratio – Supply Voltage(VDD=3[V])
2.0 PROPAGATION DELAY L-H [μs]
BU7251 family
COMMON MODE REJECTION RATIO [dB]
5.5V
1.5
60 40 20 0 -60
1.8V
1.8V
1.0
5.5V 3.0V
0.5
0.0 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
-30 0 30 60 90 AMBIENT TEMPERATURE [℃]
120
Fig. 19 Common Mode Rejection Ratio – Ambient Temperature
(VDD=3[V])
0.8 PROPAGATION DELAY H-L [μs]
BU7251 family
Fig. 20 Power Supply Rejection – Ambient Temperature
Fig. 21 Propagation Delay L-H – Ambient Temperature
0.6
0.4
1.8V 5.5V
0.2
3.0V
0.0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 22
Propagation Delay H-L – Ambient Temperature
(*) The above date is ability value of sample, it is not guaranteed. BU7251G：-40[℃] to+85[℃] BU7251SG：-40[℃] to+105[℃]
5/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ○BU7252 family
1000 POWER DISSIPATION [mV]
Technical Note
BU7252 family BU7252 family
BU7252 family
1000 POWER DISSIPATION [mV]
150
800
800
SUPPLY CURRENT [μ A] 100
105℃ 85℃
600
BU7252F BU7252FVM
600
BU7252SF BU7252SFVM
400
400
50
-40℃
25℃
200
200
0 0
85 100 50 AMBIENT TEMPERATURE [℃] .
0
150
0
50
100 105
0
150
1
2
AMBIENT TEMPERATURE [℃] .
3 4 5 SUPPLY VO LTAGE [V]
6
Fig. 23 Derating Curve
150
BU7252 family
Fig. 24 Derating Curve
8
BU7252 family
Fig. 25 Supply Current – Supply Voltage
8
5.5V BU7252 family
OUTPUT VOLTAGE HIGH [V]
SUPPLY CURRENT [μA]
6
105℃ 85℃
OUTPUT VOLTAGE HIGH [V]
6
100
5.5V 3.0V 1.8V
4
25℃
4
3.0V 1.8V
50
2
-40℃
2
0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 26 Supply Curreny – Ambient Temperature
BU7252 family
Fig. 27 Output Voltage High – Supply Voltage
(RL=10[kΩ])
50
BU7252 family
Fig. 28 Output Voltage High – Ambient Temperature
(RL=10[kΩ])
10 OUTPUT SOURCE CURRENT [mA]
BU7252 family
50
OUTPUT VOLTAGE LOW [mV]
40
OUTPUT VOLTAGE LOW [mV]
40
5.5V 3.0V
8
-40℃ 25℃
30
85℃
105℃
30
6
20
20
4
105℃ 85℃
10
25℃ -40℃
10
1.8V
2
0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
0 0 0.5 1 1.5 2 2.5 3 OUTPUT VOLTAGE [V]
Fig. 29 Output Voltage Low – Supply Voltage(RL=10[kΩ])
5 OUTPUT SOURCE CURRENT [mA]
5.5V BU7252 family
Fig. 30 Output Voltage Low – Ambient Temperature(RL=10[kΩ])
30 25
25℃ -40℃ BU7252 family
Fig. 31 Output Source Current – Output Voltage(VDD=3[V])
20 OUTPUT SINK CURRENT [mA]
BU7252 family
4
OUTP UT SINK CURRENT [mA]
15
5.5V
20 15 10 5 0
3
3.0V
10
3.0V
2
1.8V
85℃
105℃
1
5
1.8V
0 -60
-30
0
30
60
90
120
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [ ℃]
OUTPUT VOLTAGE [V]
AMBIENT TEMPERATURE [℃]
Fig. 32 Output Source Current – Ambient Temperature
(VOUT=VDD-0.4[V])
Fig. 33 Output Sink Current – Output Voltage
(VDD=3[V]) BU7252 F/FVM：-40[℃] to+85[℃]
Fig. 34 Output Sink Current – Ambient Temperature
(VOUT=VSS+0.4[V]) BU7252S F/FVM：-40[℃] to+105[℃]
(*) The above date is ability value of sample, it is not guaranteed.
6/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ○BU7252 family
10.0 INPUT OFFSET VOLTAGE [mV] 7.5 5.0 2.5 0.0 -2.5
85℃ -40℃ 25℃ BU7252 family
Technical Note
10.0 INPUT OFFSET VOLTAGE [mV] 7.5 5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0
1.8V
BU7252 family
15 INPUT OFFSET VOLTAGE [mV] 10 5 0 -5 -10 -15
BU7252 family
-40℃ 25℃
3.0V
-5.0 -7.5 -10.0 1 2 3 4
105℃
5.5V
105℃ 85℃
5
6
-60
SUPPLY VOLTAGE[V]
-30 0 30 60 90 AMBIENT TEMPERATURE [℃]
120
-1
0
1 2 3 INPUT VOLTAGE [V]
4
Fig. 35 Input Offset Voltage – Supply Voltage
(Vicm=VDD,VOUT=0.1[V])
160 LARGE SIGNAL VOLTAGE GAIN [dB] 140 120 100 80 60 40 20 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
-40℃ 85℃ 105℃ 25℃ BU7252 family
Fig. 36 Input Offset Voltage – Ambient Temperature
(Vicm=VDD,VOUT=0.1[V])
COMMON MODE REJECTION RATIO [dB]
160 LARG E SIGNAL VOLTAGE GAIN [dB ] 140 120 100 80
3.0V 1.8V BU7252 family
Fig. 37 Input Offset Voltage – Input Voltage
(VDD=3[V])
120 100 80
85℃ BU7252 family
105℃
60 40 20 0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
25℃ -40℃
60
5.5V
40 20 -60 -30 0 30 60 90 AMBIENT TEMP ERATURE [ ℃] 120
Fig. 38 Large Signal Voltage Gain – Supply Voltage
POWER SUPPLY REJECTION RATIO [dB]
COMMON MODE REJECTION RATIO [dB] 120 100 80 60 40 20 0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
3.0V 5.5V BU7252 family
Fig. 39 Large Signal Voltage Gain – Ambient Temperature
120 100 80 60 40 20 0 -60
BU7252 family
Fig. 40 Common Mode Rejection Ratio – Supply Voltage (VDD=3[V])
2.0 PROPAGATION DELAY L-H [μs]
BU7252 family
1.5
1.8V
1.0
5.5V
1.8V
0.5
3.0V
-30
0
30
60
90
120
0.0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
AMBIENT TEMPERATURE [℃]
Fig. 41 Common Mode Rejection – Ambient Temperature (VDD=3[V])
0.8 PROPAGATION DELAY H-L [μs]
BU7251 family
Fig. 42 Power Supply Rejection Ratio – Ambient Temperature
Fig. 43 Propagation Delay L-H – Ambient Temperature
0.6
0.4
1.8V 3.0V
0.2
5.5V
0.0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 44 Propagation Delay H-L – Ambient Temperature
(*) The above date is ability value of sample, it is not guaranteed. BU7252 F/FVM：-40[℃] to+85[℃] BU7252S F/FVM：-40[℃] to+105[℃]
7/18
5.5V
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ○BU7231 series
800
BU7231 family
Technical Note
BU7231 family BU7231 family
800 POWER DISSIPATION [mW] .
20
POWER DISSIPATION [mW] .
SUPPLY CURRENT [μA]
600
BU7231G
16
600
BU7231SG
12
85℃
105℃
400
400
8
25℃
200
200
4
-40℃
0 0
85 50 100 AMBIENT TEMPERATURE [℃]
0
150
0
50
100
105
0
150
1
2
AMBIENT TEMPERATURE [℃]
3 4 5 SUPPLY VOLTAGE [V]
6
Fig. 45 Derating Curve
12
BU7231 family
Fig. 46 Derating Curve
6
Fig. 47 Supply Current – Supply Voltage
8
BU7231 family
BU7231 family
OUTPUT VOLTAGE HIGH [V]
OUTPUT VOLTAGE HIGH [V]
10 SUPPLY CURRENT [μ A]
5.5V
105℃
6
5.5V
8
4
85℃ 25℃
4
3.0V 1.8V
6
3.0V 1.8V
2
-40℃
4
2
2 -60
-30 0 30 60 90 AM BIENT TEM PERATURE [℃ ]
120
0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 48 Supply Current – Ambient Temperature
50
BU7231 family
Fig. 49 Output Voltage – Supply Voltage
(RL=10[kΩ])
50 OUTPUT VOLTAGE LOW [mV]
BU7231 family
Fig. 50 Output Voltage High – Ambient Temperature
(RL=10[kΩ])
10
BU7231 family
40
40
OUTPUT SOURCE CURRENT [mA]
O UTPUT VOLTAGE LOW [mV]
8
-40℃
30
85℃
105℃
30
5.5V
6
25℃
20
20
1.8V
4
85℃ 105℃
10
-40℃
25℃
10
3.0V
2
0 0 2 4 6 SUPP LY VOLTAGE [V] 8
0 -60
0
-30
0
30
60
90
120
0
0.5
1
1.5
2
2.5
3
AMBIENT TEMPERATURE [℃]
OUTPUT VOLTAGE [V]
Fig. 51 Output Voltage Low – Supply Voltage
(RL=10[kΩ])
5 OUTPUT SOURCE CURRENT [mA]
BU7231 family
Fig. 52 Output Voltage Low – Ambient Temperature
(RL=10[kΩ])
30 25 20 15 10 5 0
105℃ 85℃ BU7231 family
Fig. 53 Output Source Current – Output Voltage
(VDD=3[V])
20
BU7231 family
OUTPUT SINK CURRENT [mA]
4
5.5V
-40℃ 25℃
OUTPUT SINK CURRENT [mA]
15
5.5V
3
10
2
3.0V
3.0V
1
1.8V
5
1.8V
0 -60
-30
0
30
60
90
120
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0 -60
Fig. 54 Output Source Current – Ambient Temperature
(VOUT=VDD-0.4[V])
AMBIENT TEMPERATURE [℃]
OUTPUT VOLTAGE [V]
-30 0 30 60 90 AMBIENT TEMPERATURE [℃]
120
Fig. 55 Output Sink Current – Output Voltage
(VDD=3[V])
Fig. 56 Output Sink Current – Ambient Temperature
(VOUT=VSS+0.4[V])
(*) The above date is ability value of sample, it is not guaranteed.
BU7231G：-40[℃] to+85[℃] BU7231SG：-40[℃] to+105[℃]
8/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ○BU7231 series
10.0 INPUT OFFS ET VOLTAGE [mV ] 7.5 5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 1 2 3 4 5 6 SUPP LY VOLTAG E [V]
105℃ 85℃ -40℃ 25℃ BU7231 family
Technical Note
10.0
BU7231 family
15
BU7231 family
INPUT OFFSET VOLTAGE [mV]
INPUT OFFSET VOLTAGE [mV]
7.5 5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
5.5V 3.0V 1.8V
10 5
85℃ 105℃
0
-40℃ 25℃
-5 -10 -15 -1 0 1 2 3 INPUT VOLTAGE [V] 4
Fig. 57 Input Offset Voltage – Supply Voltage
(Vicm=VDD, Vout=0.1[V])
160
BU7231 family
Fig. 58 Input Offset Voltage – Ambient Temperature
(Vicm=VDD, Vout=0.1[V])
COMMON MODE REJECTION RATIO [dB]
160
BU7231 family
Fig. 59 Input Offset Voltage – Input Voltage
(VDD=3[V])
120 100 80 60 40 20 0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
85℃ 105℃ BU7231 family
LARGE SIGNAL VOLTAGE GAIN [dB]
140
LARGE SIGNAL VOLTAGE GAIN [dB]
140
120
105℃ 85℃
120
1.8V
25℃
-40℃
100
-40℃ 25℃
100
3.0V
80
80
5.5V
60 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
60 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 60 Large Signal Voltage Gain – Supply Voltage
BU7231 family
Fig. 61 Large Signal Voltage Gain – Ambient Temperature
POWER SUPPLY REJECTION RATIO [dB] 120 100 80 60 40 20 0 -60
BU7231 family
Fig. 62 Common Mode Rejection Ratio – Supply Voltage (VDD=3[V])
5
BU7231 family
COMMON MODE REJECTION RATIO [dB]
120 100 80 60 40 20 0 -60
3.0V 1.8V
5.5V
PROPAGATION DELAY L-H [μs]
4
3
5.5V 3.0V
2
1.8V
1
0
-30 0 30 60 90 AMBIENT TEMPERATURE [℃]
120
-30 0 30 60 90 AMBIENT TEMPERATURE [℃]
120
-60
-30 0 30 60 90 AMBIENT TEMPERATURE [℃]
120
Fig. 63 Common Mode Rejection Ratio – Ambient Temperature (VDD=3[V])
1.5
BU7231 family
Fig. 64 Power Supply Rejection Ratio – Ambient Temperature
Fig. 65 Propagation Delay L-H – Ambient Temperature
PROPAGATION DELAY H-L [μs]
1.2
0.9
5.5V
0.6
1.8V 3.0V
0.3
0.0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 66 Propagation Delay H-L– Ambient Temperature
(*) The above date is ability value of sample, it is not guaranteed. BU7231G：-40[℃] to+85[℃] BU7231SG：-40[℃] to+105[℃]
9/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ○BU7232 family
1000
BU7232 family
Technical Note
1000
BU7232 family
50
BU7232 family
POWER DISSIPATION [mV]
POWER DISSIPATION [mV]
SUPPLY CURRENT [µA]
800
800
40
600
BU7232F BU7232FVM
600
BU7232SF BU7232SFVM
30
105℃ 85℃ -40℃ 25℃
400
400
20
200
200
10
0 0
85 50 100 AMBIENT TEMPERATURE [℃] .
0 150 0 50 100105 AMBIENT TEMPERATURE [℃] . 150
0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
Fig. 67 Derating Curve
50
BU7232 family
Fig. 68 Derating Curve
8
BU7232 family
Fig. 69 Supply Current – Supply Voltage
8
BU7232 family
OUTPUT VOLTAGE HIGH [V]
OUTPUT VOLTAGE HIGH [V]
40 SUPPLY CURRENT [μA]
5.5V
6
105℃ 85℃
6
30
5.5V
4
25℃ -40℃
4
3.0V 1.5V
20
1.8V
3.0V
10
2
2
0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
0 1 2 3 4 5 6 SUPPLY VOLTAGE [V] 7
0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 70 Supply Current – Ambient emperature
50 OUTPUT VOLTAGE LOW [mV]
BU7232 family
Fig. 71 Output Voltage High – Supply Voltage
(RL=10[kΩ])
40 OUTPUT VOLTAGE LOW [mV]
BU7232 family
Fig. 72 Output Voltage – Ambient Temperature
(RL=10[kΩ])
10 OUTPUT SO URCE CURRENT [mA]
BU7232 family
40
105℃ 85℃
8
30
5.5V
-40℃ 25℃
30
6
20
3.0V
20
4
105℃ 85℃
10
-40℃ 25℃
10
1.8V
2
0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6 7
0 -60 -30 0 30 60 90 120 AMBIENT TEMPERATURE [ ℃]
0 0 0.5 1 1.5 2 2.5 3 OUTPUT VOLTAGE [V]
Fig. 73 Output Voltage Low – Supply Voltage
(RL=10[kΩ])
5 OUTPUT SOURCE CURRENT [mA]
BU7232 family
Fig. 74 Output Voltage Low – Ambient temperature
(RL=10[kΩ])
30
-40℃ 25℃ BU7232 family
Fig. 75 Output Source Current – Output Voltage
(VDD=3[V])
20
BU7232 family
OUTPUT SINK CURRENT [mA]
4
5.5V
OUTPUT SINK CURRENT [mA]
15
5.5V
20
3
3.0V
10
3.0V
2
1.8V
10
85℃
105℃
1
5
1.8V
0 -60 -30 0 30 60 90 120 AMBIENT TEMPERATURE [℃]
0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 OUTPUT VOLTAGE [V]
0 -60 -30 0 30 60 90 120 AMBIENT TEMPERATURE [℃]
Fig. 76 Output Source Current – Ambient Temperature
(VOUT=VDD-0.4[V])
Fig. 77 Output Sink Current – Output Voltage
(VDD=3[V]) BU7232 F/FVM：-40[℃] to+85[℃]
Fig. 78 Output Sink Current – Ambient Temperature
(VOUT=VSS+0.4[V]) BU7232S F/FVM：-40[℃] to+105[℃]
(*) The above date is ability value of sample, it is not guaranteed.
10/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ○BU7232 family
10.0 INPUT OFFSET VOLTAGE [mV] 7.5 5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 1 2 3 4 5 AMBIENT TEMPERATURE [℃] 6
105℃ 85℃ -40℃ 25℃ BU7232 family
Technical Note
10.0 INPUT OFFSET VOLTAGE [mV] 7.5 5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 -60
1.8V 3.0V
BU7232 family
15 INPUT OFFSET VOLTAGE [mV] 10 5 0 -5 -10 -15
85℃ 25℃ -40℃ 105℃
BU7232 family
5.5V
-30 0 30 60 90 AMBIENT TEMPERATURE [℃]
120
-1
0
1 2 3 INPUT VOLTAGE [V]
4
Fig. 79 Input Offset Voltage – Ambient Temperature
(Vicm=VDD, VOUT=0.1[V])
160 LARGE SIGNAL VOLTAGE GAIN [dB]
BU7232 family
Fig. 80 Input Offset Voltage – Ambient Temperature
(Vicm=VDD, VOUT=0.1[V])
COMMON MODE REJECTION RATIO [dB]
160 LARGE SIGNAL VOLTAGE GAIN [dB]
BU7232 family
Fig. 81 Input Offset Voltage – Input Voltage
(VDD=3[V])
120 100 80 60 40 20 0 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
25℃ -40℃ BU7232 family
140
140
120
25℃
120
1.8V
105℃
100
105℃ 85℃
100
5.5V
80
-40℃
80
3.0V
60 1 2 3 4 5 SUPPLY VOLTAGE [V] 6
60 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 82 Large Signal Voltage Gain – Supply Voltage
BU7232 family
Fig. 83 Large Signal Voltage Gain – Ambient Temperature
POWER SUPPLY REJECTION RATIO [dB] 120 100 80 60 40 20 0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
BU7232 family
Fig. 84 Common Mode Rejection Ratio – Supply Voltage (VDD=3[V])
5 PROPAGATION DELAY L-H [μs]
BU7232 family
COMMON MODE REJECTION RATIO [dB]
120 100 80 60 40
1.8V 5.5V
4
5.5V 3.0V
3
2
3.0V
20 0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
1
1.8V
0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 85 Common Mode Rejection Ratio – Ambient Temperature (VDD=3[V])
1.5
PROPAGATION DELAY H-L [us]
BU7232 family
Fig. 86 Power Supply Rejection Ratio – Ambient Temperature
Fig. 87 Propagation Delay L-H – Ambient temperature
1.2
5.5V 1.8V
0.9
0.6
0.3
3.0V
0.0 -60 -30 0 30 60 90 AMBIENT TEMPERATURE [℃] 120
Fig. 88 Propagation Delay H-L – Ambient Temperature
(*) The above date is ability value of sample, it is not guaranteed. BU7232 F/FVM：-40[℃] to+85[℃] BU7232S F/FVM：-40[℃] to+105[℃]
11/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ●Schematic diagram
Technical Note
Fig. 89 Simplified schematic ●Test circuit1 NULL method VDD,VSS,EK,Vicm, Unit : [V] Parameter Input offset voltage Large signal voltage gain Common-mode rejection ratio (Input common-mode voltage range) Power supply rejection ratio VF VF1 VF2 VF3 VF4 VF5 VF6 VF7 S1 ON ON ON ON S2 ON ON ON ON S3 OFF ON OFF OFF VDD 3 3 3 1.8 5.5 VSS 0 0 0 0 EK -0.1 -0.3 -2.7 -0.1 -0.1 Vicm 0.3 0.3 0 3 0.3 Calculation 1 2 3 4
-Calculation1. Input offset Voltage (Vio)
Vio =
|VF1| 1+Rf/Rs
[V]
2. Large signal voltage gain (Av)
3. Common-mode rejection ratio (CMRR)
4. Power supply rejection ratio (PSRR)
0.47[μF]
S1 0.1[uF] RS＝ 50[Ω] Vic m RS＝ 50[Ω] Ri＝ 1[MΩ] Ri＝ 1[MΩ] 0.1[uF]
Rf 50[kΩ]
RK 500[kΩ] 500[kΩ] 0.01[μF] +15[V] NULL
VDD
EK
DUT RK
VSS
S3 RL
-15[V]
VF
S2 50[kΩ]
Fig. 90 Test Circuit 1 (one channel only)
12/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ●Test circuit2 switch condition Unit : [V] SW No. supply current maximum output voltage RL=10 [kΩ] output current response time SW 1 OFF OFF OFF ON SW 2 ON ON OFF OFF SW 3 ON ON OFF ON SW 4 OFF ON OFF OFF SW 5 OFF OFF OFF ON SW 6 OFF OFF ON OFF
Technical Note
SW 7 OFF ON OFF OFF
SW 8 OFF OFF OFF ON
VDD=3[V]
－ ＋
SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8
GND RL VINVIN+ CL Vo
Fig. 91 Test circuit2 (one channel only)
V IN
[V]
Input Wave 入力波形
V IN
[V]
Input Wave 入力波形
1.6[V]
1.6[V] 100mV over drive
Vref=1.5[V] 100mV over drive 1.4[V]
V OUT
[V]
Vref=1.5[V]
1.4[V]
V OUT
t
[V]
Output Wave 出力波形
3[V]
Output 出力波形Wave
3[V]
1.5[V]
1.5[V]
0[V]
TPHL
t
0[V]
TPLH
t
Fig. 92
Slew rate input output wave
13/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
●Description of electrical characteristics Described here are the terms of electric characteristics used in this technical note. Items and symbols used are also shown. Note that item name and symbol and their meaning may differ from those on another manufacture’s document or general document. 1. Absolute maximum ratings
Absolute maximum rating item indicates the condition which must not be exceeded. Application of voltage in excess of absolute Maximum rating or use out of absolute maximum rated temperature environment may cause deterioration of characteristics.
1.1 Power supply voltage(VDD/VSS) Indicates the maximum voltage that can be applied between the positive power supply terminal and negative power supply terminal without deterioration or destruction of characteristics of internal circuit. 1.2 Differential input voltage (Vid) Indicates the maximum voltage that can be applied between non-inverting terminal and inverting terminal without deterioration and destruction of characteristics of IC. 1.3 Input common-mode voltage range (Vicm) Indicates the maximum voltage that can be applied to non-inverting terminal and inverting terminal without deterioration or destruction of characteristics. Input common-mode voltage range of the maximum ratings not assure normal operation of IC. When normal operation of IC is desired, the input common-mode voltage of characteristics item must be followed. 1.4 Power dissipation (Pd) Indicates the power that can be consumed by specified mounted board at the ambient temperature 25℃(normal temperature). As for package product, Pd is determined by the temperature that can be permitted by IC chip in the package(maximum junction temperature) and thermal resistance of the package 2. Electrical characteristics item 2.1 Input offset voltage (Vio) Indicates the voltage difference between non-inverting terminal and inverting terminal. It can be translated into the input voltage difference required for setting the output voltage at 0 [V] 2.2 Input offset current (Iio) Indicates the difference of input bias current between non-inverting terminal and inverting terminal. 2.3 Input bias current (Ib) Indicates the current that flows into or out of the input terminal. It is defined by the average of input bias current at non-inverting terminal and input bias current at inverting terminal. 2.4 Input common-mode voltage range (Vicm) Indicates the input voltage range where IC operates normally. 2.5 Large signal voltage gain (AV) Indicates the amplifying rate (gain) of output voltage against the voltage difference between non-inverting terminal and inverting terminal. It is normally the amplifying rate (gain) with reference to DC voltage. Av = (Output voltage fluctuation) / (Input offset fluctuation) 2.6 Circuit current (ICC) Indicates the IC current that flows under specified conditions and no-load steady status. 2.7 Output sink current (OL) Indicates the maximum current that can be output under specified output condition (such as output voltage and load condition). 2.8 Output saturation voltage, Low level output voltage (VOL) Indicates the voltage range that can be output under specified load conditions. 2.9 Output leakage current, High level output current(I leak) Indicates the current that flows into IC under specified input and output conditions. 2.10 Response Time (Tre) The interval between the application of an input and output condition. 2.11 Common-mode rejection ratio (CMRR) Indicates the ratio of fluctuation of input offset voltage when in-phase input voltage is changed. It is normally the fluctuation of DC. CMRR ＝(Change of Input common-mode voltage)/(Input offset fluctuation) 2.12 Power supply rejection ratio (PSRR) Indicates the ratio of fluctuation of input offset voltage when supply voltage is changed. It is normally the fluctuation of DC. PSRR＝(Change of power supply voltage)/(Input offset fluctuation)
14/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
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.93 (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.93 (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. Fig94(c)-(f) show a derating curve for an example of BU7251family, BU7252 family, BU7231 family, BU7232 family. Power dissipation Pd:[W]
LSIの消費電力[W] Pd(max)
θja = ( Tj ー Ta ) / Pd [℃/W]
Ambient temperature Ta [℃]
P2
θja2 < θja1
P1
θja2
Tj(max) θja1
Chip surface temperature Tj [℃] Power dissipation P [W]
0
25
50
75
100
BU7251/BU7231 T j(max)
125
150
Ambient temperature:Ta[℃] 周囲温度Ta[℃]
(b) Derating curve (a) Thermal resistance Fig. 93. Thermal resistance and power dissipation
800 POWER DISSIPATION [mW] .
POWER DISSIPATION [mW] . 1000
600
540[mw] BU7251G(*8) BU7231G(*8)
800
620[mw] BU7252F(*9) BU7232F(*9)
600
400
480[mw] BU7252FVM(*10) BU7232FVM(*10)
400
200
200
0 0 50
0
85 100
150
0
50
85
100
150
AMBIENT TEMPERATURE [℃]
AMBIENT TEMPERATURE [℃]
(c) BU7251G
800 POWER DISSIPATION [mW] .
BU7231G
(d) BU7252F/FVM
1000 POWER DISSIPATION [mW] .
BU7232F/FVM
800
600
540[mw]
620[mw]
BU7251SG(*8) BU7231SG(*8)
BU7252SF(*9) BU7232SF(*9)
600
480[mw] BU7252SFVM(*10) BU7232SFVM(*10)
400
400
200
200
0 0 50
0
100 105
150
0
50
105 100
150
AMBIENT TEMPERATURE [℃]
AMBIENT TEMPERATURE [℃]
(e) BU7251SG
BU7231SG
(f) BU7252S F/FVM
BU72432S F/FVM
(*8) 5.4 Fig. 94.
(*9) 6.2
(*10) 4.8
Unit [mW/℃]
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.
Derating curve
15/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
●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 inputterminals without deterioration or destruction of its characteristics. 3) Operating power supply (split power supply/single power supply) The voltage comparator 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) Short circuits between pins and incorrect mounting Short circuits between pins and incorrect mounting when mounting the IC on a printed circuits board, take notice of the direction and positioning of the IC. If IC is mounted erroneously, It may be damaged. Also, when a foreign object is inserted between output, between output and VDD terminal or VSS terminal which causes short circuit, the IC may be damaged. 6) Using under strong electromagnetic field Be careful when using the IC under strong electromagnetic field because it may malfunction. 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 deculing capacitance between VDD and VSS, for stable operation of operational amplifier. 11) Latch up Be careful of input vltage that exceed the VDD and VSS. When CMOS device have sometimes occur latch up operation. And protect the IC from abnormaly noise
16/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM ●Ordering part number
Technical Note
B
U
7
2
5
2
F
V
M
-
T
R
Part No.
Part No. 7231 , 7231S 7251 , 7251S 7252 , 7252S 7232 , 7232S
Package G: SSOP5 F: SOP8 FVM: MSOP8
Packaging and forming specification E2: Embossed tape and reel (SOP8) TR: Embossed tape and reel (SSOP5/MSOP8)
SOP8
5.0±0.2 (MAX 5.35 include BURR)
8 7 6 5
+6° 4° −4°
Tape Quantity
0.9±0.15 0.3MIN
Embossed carrier tape 2500pcs E2
The direction is the 1pin of product is at the upper left when you hold
6.2±0.3
4.4±0.2
Direction of feed
( reel on the left hand and you pull out the tape on the right hand
)
12
3
4
0.595
1.5±0.1
+0.1 0.17 -0.05 S
0.11
1.27 0.42±0.1
1pin
(Unit : mm)
Direction of feed
Reel
∗ Order quantity needs to be multiple of the minimum quantity.
SSOP5
2.9±0.2
5 4
+6° 4° −4°
Tape Quantity Direction of feed Embossed carrier tape 3000pcs TR
The direction is the 1pin of product is at the upper right when you hold
+0.2 1.6 −0.1
2.8±0.2
1
2
3
0.2Min.
( reel on the left hand and you pull out the tape on the right hand
1pin
)
+0.05 0.13 −0.03
1.25Max.
1.1±0.05
0.05±0.05
+0.05 0.42 −0.04 0.95 0.1
Direction of feed
(Unit : mm)
Reel
∗ Order quantity needs to be multiple of the minimum quantity.
17/18
BU7251G,BU7251SG, BU7231G,BU7231SG, BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
MSOP8
2.9±0.1 (MAX 3.25 include BURR)
8765
Tape
0.29±0.15 0.6±0.2
+6° 4° −4°
Embossed carrier tape 3000pcs TR
The direction is the 1pin of product is at the upper right when you hold
Quantity Direction of feed
4.0±0.2
2.8±0.1
( reel on the left hand and you pull out the tape on the right hand
1pin
)
1 234
1PIN MARK 0.475 S +0.05 0.22 –0.04 0.08 S 0.65
+0.05 0.145 –0.03
0.9MAX 0.75±0.05
0.08±0.05
Direction of feed
(Unit : mm)
Reel
∗ Order quantity needs to be multiple of the minimum quantity.
18/18
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified 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 specifications, 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 specified 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 specified 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. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts 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, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire 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 injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-controller 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 specified 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.
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