General Description Features - Diodes Incorporated · Input Offset Voltage VOS VOUT=1.4V, VCC=5 to...
Transcript of General Description Features - Diodes Incorporated · Input Offset Voltage VOS VOUT=1.4V, VCC=5 to...
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
General Description
The AS331 consists of a single precision voltage com-parator with a typical input offset voltage of 1.0mVand high voltage gain. It is specifically designed tooperate from a single power supply over wide range ofvoltages. Operation from split power supply is alsopossible and the low power supply current drain isindependent of the magnitude of the power supplyvoltage.
The AS331 is available in standard SOT-23-5 package.
Features
· Wide Supply Voltage Range - Single Supply: 2V to 36V - Dual Supplies: ±1V to ±18V · Low Supply Current at VCC=5V: 0.4mA· Low Input Bias Current: 25nA (Typical) · Low Input Offset Current:5nA (Typical)· Low Input Offset Voltage: 1mV (Typical) · Input Common Mode Voltage Range Includes
Ground· Differential Input Voltage Range Equals to the
Power Supply Voltage· Low Output Saturation Voltage at 4mA: 200mV
(Typical) · Open Collector Output
Applications
· Battery Charger · Cordless Telephone· Switching Power Supply· DC-DC Module· PC Motherboard· Communication Equipment
Figure 1. Package Type of AS331
SOT-23-5
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
Figure 2. Pin Configuration of AS331 (Top View)
Pin Configuration
Figure 3. Functional Block Diagram of AS331
Functional Block Diagram
VCC
OUTPUT
INPUT-
INPUT+
GND
K Package (SOT-23-5)
INPUT+
INPUT-
Q5 Q6
Q1Q2 Q3
Q4
Q7
Q8
OUTPUT
VCC
GND
1
2
34
5
1
2
3 4
5
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
Package Temperature Range
Part Number Marking ID Packing TypeLead Free Green Lead Free Green
SOT-23-5 -40 to 85oC AS331KTR-E1 AS331KTR-G1 EEA GEA Tape & Reel
Circuit Type
PackageK: SOT-23-5
E1: Lead Free
AS331 -
TR: Tape and Reel
Ordering Information
Parameter Symbol Value Unit
Supply Voltage VCC 40 V
Differential Input Voltage VID 40 V
Input Voltage VIN -0.3 to 40 V
Input Current (VIN<-0.3V) (Note 2) IIN 50 mA
Output Short-circuit Current to Ground Continuous
Power Dissipation (TA=25oC) PD 620 mW
Operating Junction Temperature TJ 150 oC
Storage Temperature TSTG -65 to 150 oC
Lead Temperature (Soldering, 10sec) TLEAD 260 oC
Absolute Maximum Ratings (Note 1)
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to thedevice. These are stress ratings only, and functional operation of the device at these or any other conditionsbeyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Max-imum Ratings" for extended periods may affect device reliability.Note 2: This input current will only exist when the voltage at any of the input leads is driven negative. It is due tothe collector-base junction of the input PNP transistors becoming forward biased and thereby acting as input diodeclamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the IC chip. Thistransistor action can cause the output voltages of the comparators to go to the V+ voltage level (or to ground for alarge overdrive) for the time duration that an input is driven negative. This is not destructive and normal outputstates will re-establish when the input voltage, which was negative, again returns to a value greater than -0.3V (at25oC).
G1: Green
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with"G1" suffix are available in green package.
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
Parameter Symbol Min Max Unit
Supply Voltage VCC 2 36 V
Operating Ambient Temperature Range TA -40 85 oC
Recommended Operating Conditions
Electrical Characteristics
Parameter Symbol Conditions Min Typ Max Unit
Input Offset Voltage VOS VOUT=1.4V, VCC=5 to 30V1 5
mV7.0
Input Bias Current IBIIN+ or IIN- with output in linear range, VCM=0V
25 250nA
400
Input Offset Current IIO IIN+-IIN-, VCM=0V 5 50
nA200
Input Common ModeVoltage Range (Note 4)
VCC=30V 0 VCC-1.5 V
Supply Current ICC RL=∞
VCC=5V 0.4 1.0
mA2.0
VCC=30V 0.5 1.7
3.0
Voltage Gain GV VCC=15V, RL≥15kΩ, VOUT=1 to 11V 50 200 V/mV
Large Signal ResponseTime
VIN =TTL Logic Swing, RL=5.1kΩ 200 ns
Response Time RL=5.1kΩ 1.3 µs
Output Sink Current ISINK VIN-=1V, VIN+=0V, VOUT=1.5V 6.0 16 mA
Output Leakage Current ILEAKVIN-=0V, VIN+=1V, VOUT=5V 0.1 nA
VIN-=0V, VIN+=1V, VOUT=30V 1 µA
Saturation Voltage VSAT VIN-=1V, VIN+=0V, ISINK≤4mA200 400
mV500
VCC=5V, GND=0V, TA=25oC, unless otherwise specified. Bold typeface applies over TA=-40 to 85oC (Note 3)
Note 3: These specifications are limited to -40oC≤TA≤85oC. Limits over temperature are guaranteed by design, butnot tested in production.Note 4: The input common mode voltage of either input signal voltage should not be allowed to go negatively bymore than 0.3V (at 25oC). The upper end of the common mode voltage range is VCC-1.5V (at 25oC), but either orboth inputs can go to +36V without damages, independent of the magnitude of the VCC.
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
Typical Performance Characteristics
Figure 4. Supply Current vs. Supply Voltage Figure 5. Supply Current vs. Case Temperature
Figure 7. Saturation Voltage vs. Case TemperatureFigure 6. Input Offset Voltage vs. Case Temperature
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
0.0
0.1
0.2
0.3
0.4
0.5
0.6
Sup
ply
Cur
rent
(mA
)
Supply Voltage (V)
TC=-40oC
TC=25oC
TC=85oC
-40 -20 0 20 40 60 80 100 1200.20
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
Sup
ply
Cur
rent
(mA
)
Case Temperature (oC)
VCC=5V VCC=30V
-40 -20 0 20 40 60 80 100 120
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
Inpu
t Offs
et V
olta
ge (m
V)
Case Temperature (oC)
RL=5.1KΩ VCC=5V VCC=30V
-40 -20 0 20 40 60 80 100 120100
150
200
250
300
350
Sat
urat
ion
Vol
tage
(mV
)
Case Temperature (oC)
VCC=5VISINK
=4mA
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
Figure 8. Saturation Voltage vs. Output Sink Current Figure 9. Response Time vs. Case Temperature
Figure 10. Response Time vs. Load Capacitor
Typical Performance Characteristics (Continued)
0 2 4 6 8 10 12 14 16 18 20 220
1
2
3
4
5
6
Sat
urat
ion
Vol
tage
(V)
Output Sink Current (mA)
VCC=5V
TC=25oC
-40 -20 0 20 40 60 80 100 120200
250
300
350
400
450
500
550
600
Res
pons
e Ti
me
(nS)
Case Temperature (oC)
VCC=5V, Input Overdrive Voltage=100mV Low to High High to Low
0 20 40 60 80 100 120 140300
400
500
600
700
800
900
Res
pons
e Ti
me
(nS
)
Load Capacitor (pF)
Low to High High to Low
VCC=5V,GND=0V, RL=5.1KΩInput Overdrive Voltage=100mV
0 20 40 60 80 1000.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Res
pons
e Ti
me
(nS
)
Input OverdrIve Voltage (mV)
Low to High High to Low
VCC=5V, GND=0VRL=5.1KΩ
Figure 11. Response Time vs. Input Overdrive Voltage
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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Typical Performance Characteristics (Continued)
0 5 10 15 20 25 300.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Res
pons
e Ti
me
(nS
)
Supply Voltage (V)
Low to High High to Low
RL=5.1KΩInput Overdrive Voltage=5mV
0 5 10 15 20 25 300.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Res
pons
e Ti
me
(nS
)
Supply Voltage (V)
Low to High High to Low
RL=5.1KΩInput Overdrive Voltage=100mV
Figure 15. Response Time for Negative TransitionFigure 14. Response Time for Positive Transition
Figure 12. Response Time vs. Supply Voltage Figure 13. Response Time vs. Supply Voltage
Input Overdrive Voltage=100mV
5mV20mV 10mV
Input
Output
VCC=5V, RL=5.1KΩ
Input
100mV Input Overdrive Voltage=5mV
20mV 10mVOutput
VCC=5V, RL=5.1KΩ
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
Typical Performance Characteristics (Continued)
Figure 17. Response Time for Negative TransitionFigure 16. Response Time for Positive Transition
Figure 19. 100kHz ResponseFigure 18. 100kHz Response
VCC=15V
VCC=5V
Input
Output
Input Overdrive Voltage=100mV
VCC=15V
VCC=5V
Input
Output
Output
Input Overdrive Voltage=100mV
Input
Output
VCC=5V, RL=5.1KΩ
Input Overdrive Voltage=100mV
Input
OutputInput Overdrive Voltage=5mV
VCC=5V, RL=5.1KΩ
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
Typical Performance Characteristics (Continued)
Input
OutputInput Overdrive Voltage=100mV
VCC=5V, RL=5.1KΩ
Figure 20. 500kHz Response
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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Typical Application
Figure 21. Basic Comparator Figure 22. Driving CMOS
VIN+
VREF+
AS331
VCC
3KΩ
VOUT
+
-
100KΩ
5V
+
-
AS331
VIN+
VREF+
VOUT
Figure 23. One Shot Multivibrator Figure 24. Squarewave Oscillator
1MΩ
VCC
VOUT
10KΩ
-
+
VIN+
100pF
0.001µF
AS331
1MΩ
1MΩ
100KΩ
75pF
100KΩ
VCC
4.3KΩ
VOUT
100KΩ
100KΩ
-
+
VIN
AS331
LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331
Data Sheet
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May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
Mechanical Dimensions
Unit: mm(inch)SOT-23-5
2.820(0.111)
2.65
0(0 .
104)
1.50
0(0.
0 59)
0.000(0.000)
0.300(0.012)0.950(0.037)
0.900(0.035)
0.100(0.004)
0.200(0.008)
0.30
0(0.
012)
8°0°
3.020(0.119)
1.70
0(0.
067)
2.95
0(0.
116)
0.400(0.016)
0.150(0.006)
1.300(0.051)
0.200(0.008)
0.60
0(0.
024)
1.800(0.071)2.000(0.079)
0.700(0.028)REF
TYP
1.45
0(0.
057)
MA X
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for anyparticular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or useof any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights orother rights nor the rights of others.
- Wafer FabShanghai SIM-BCD Semiconductor Manufacturing Limited800, Yi Shan Road, Shanghai 200233, ChinaTel: +86-21-6485 1491, Fax: +86-21-5450 0008
BCD Semiconductor Manufacturing LimitedMAIN SITE
REGIONAL SALES OFFICEShenzhen OfficeShanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen OfficeAdvanced Analog Circuits (Shanghai) Corporation Shenzhen OfficeRoom E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China Tel: +86-755-8826 7951Fax: +86-755-8826 7865
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BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
BCD Semiconductor Manufacturing Limited
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for anyparticular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or useof any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights orother rights nor the rights of others.
- Wafer FabShanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.800 Yi Shan Road, Shanghai 200233, ChinaTel: +86-21-6485 1491, Fax: +86-21-5450 0008
MAIN SITE
REGIONAL SALES OFFICEShenzhen OfficeShanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen OfficeUnit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan District, Shenzhen,China Tel: +86-755-8826 7951Fax: +86-755-8826 7865
Taiwan OfficeBCD Semiconductor (Taiwan) Company Limited4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, TaiwanTel: +886-2-2656 2808Fax: +886-2-2656 2806
USA OfficeBCD Semiconductor Corp.30920 Huntwood Ave. Hayward,CA 94544, USATel : +1-510-324-2988Fax: +1-510-324-2788
- HeadquartersBCD Semiconductor Manufacturing LimitedNo. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, ChinaTel: +86-21-24162266, Fax: +86-21-24162277