AP331A Datasheet by Diodes Incorporated

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AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 1 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Wide supply
Voltage range: 2.0V to 36V
Single or dual supplies: ±1.0V to ±18V
Very low supply current drain (0.4mA) – independent of
supply voltage
Low input biasing current: 150nA
Low input offset current: ±70nA
Low input offset voltage: ±4mV
Input common-mode voltage range includes ground
Differential input voltage range equal to the power
supply voltage
Low output saturation voltage: 250mV at 4mA
Output voltage compatible with TTL, DTL, ECL, MOS
and CMOS logic systems
SOT25 and SOT25R: Available in “Green” Molding
Compound (No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
The AP331A is a precision voltage comparators with an offset
voltage specification as low as 8.0 mV max for comparator which
were designed specifically to operate from a single power supply
over a wide range of voltages. Operation from split power
supplies is also possible and the low power supply current drain
is independent of the magnitude of the power supply voltage. The
comparator also have a unique characteristic in that the input
common-mode voltage range includes ground, even though
operated from a single power supply voltage.
Application areas include limit comparators, simple analog to
digital converters; pulse, square wave and time delay generators;
wide range VCO; MOS clock timers; multivibrators and high
voltage digital logic gates. The AP331A is designed to directly
interface with TTL and CMOS. When operated from both plus
and minus power supplies, the AP331A will directly interface with
MOS logic where their low power drain is a distinct advantage
over standard comparators.
High precision comparators
Reduced VOS drift over temperature
Eliminates need for dual supplies
Allows sensing near ground
Compatible with all forms of logic
Power drain suitable for battery operation
Ordering Information
Package Packing
Lead Free
G : Green 7 : Tape & Reel
AP331A XX G - 7
W : SOT25
WR : SOT25R
Device Package
Code Packaging
(Note 2)
7” Tape and Reel
Quantity Part Number Suffix
AP331AWG-7 W SOT25
3000/Tape & Reel -7
AP331AWRG-7 WR SOT25R
3000/Tape & Reel -7
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
Features General Description
Applications
AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 2 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Pin Assignments
(1) SOT25 (2) SOT25R
IN+
IN- Vcc
( Top View )
5
43
2
1
GND
Output IN-
IN+ Vcc
( Top View )
5
43
2
1
GND
Output
Pin Descriptions
Pin Name Pin No. Description
SOT25 SOT25R
IN- 1 3 Input-
GND 2 2 Ground
IN+ 3 1 Input+
Output 4 4 Output
Vcc 5 5 Power Supply
Block Diagram
V
+
100μA3.5μA100μA3.5μA
+INPUT
-INPUT
OUTPUT
Q1
Q2 Q3
Q4
Q5
Q6
Q7Q8
cc A orrssr may w M w SW S
AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 3 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Absolute Maximum Ratings
Symbol Paramete
r
Rating Unit
VCC Supply Voltage 40 V
VIN Differential Input Voltage (Note 10) 40 V
VIN Input Voltage -0.3 to +40 V
ICC Input Current (VIN-0.3V) (Note 5) 50 mA
PD Power Dissipation (Note 3) SOT25 740 mW
SOT25R
Output Short-Circuit to Ground (Note 4) Continuous
TJ Operatin
g
Junction Temperature Ran
g
e+150
oC
TST Storage Temperature Range -65 to +150 oC
Recommended Operating Conditions
Symbol Paramete
r
Min Max Unit
VCC Supply Voltage (Single) +2 +36 V
VCC Supply Voltage (Dual Supplies, V+ VS GND) ±1 ±18 V
VIN Differential Input Voltage (Single) (Note 10) 0 ±36 V
VIN Differential Input Voltage (Dual Supplies) (Note 10) -18 +18 V
TA Operating Ambient Temperature 0 70 oC
Electrical Characteristics
(VCC = 5V, TA = 25oC, unless otherwise stated)
Symbol Paramete
r
Conditions Min Typ. Max Unit
VOFFSET Input Offset Voltage (Note 11) - 4.0 8.0 mV
IBIAS Input Bias Current IIN(+) or IIN(-) with Output In
Linear Range, VCM = 0V
(Note 7) - 150 400 nA
IOFFSET Input Offset Current IIN
(
+
)
-I
IN
(
-
)
VCM = 0V - 70 150 nA
Input Common Mode Voltage
Range V+ = 30V (Note 8) 0 - V+ -1.5 V
ICC Supply Current RL = V+ = 5V - 0.4 1 mA
V+ = 36V - 1 2.5
Voltage Gain RL > 15k, V+ = 15V
VO = 1V to 11V 50 200 - V/mV
Large Signal Response Time VIN = TTL Logic Swing,
VREF = 1.4V, VRL = 5V,
RL = 5.1k - 300 - ns
Response Time VRL = 5V, RL = 5.1k
(Note 9) - 1.3 - μs
IO(Sink) Output Sink Current VIN(-) = 1V, VIN(+) = 0,
VO < 1.5V 6.0 16 - mA
VSAT Saturation Voltage VIN(-) = 1V, VIN(+) = 0,
ISINK < 4mA - 250 400 mV
IO(Leak) Output Leakage Current VIN(-) = 0, VIN(+) = 1V,
VO = 5V - 0.1 - nA
mDES OFFSET orrssr m
AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 4 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Electrical Characteristics
( VCC = 5V ) ( Note 6 )
Symbol Paramete
r
Conditions Min Typ. Max Unit
VOFFSET Input Offset Voltage (Note 11) - - 9 mV
IOFFSET Input Offset Current IIN
(
+
)
-IIN
(
-
, VCM = 0V - - 200 n
A
IBIAS Input Bias Current IIN(+) or IIN(-) with Output In
Linear Range, VCM = 0V
(Note 7) - - 500 nA
Input Common Mode Voltage
Range V+ =30V (Note 8) 0 - V+ -2.0 V
VSAT Saturation Voltage VIN(-) = 1V, VIN(+) = 0, ISINK <
4mA - - 700 mV
IO(Leak) Output Leakage Current VIN(-) = 0, VIN(+) = 1V,
VO = 30V - - 1.0 μA
Differential Input Voltage Keep All VIN’s > 0V (or V-, if
Used), (Note 10) - - 36 V
θJA Thermal Resistance
Junction-to-Ambient SOT25 (Note 12) 173 oC/W
SOT25R (Note 12)
θJC
T
hermal Resistance
Junction-to-Case SOT25 (Note 12) 37 oC/W
SOT25R (Note 12)
Notes: 3. The maximum power dissipation is a function of TJ(MAX) , θJA. The maximum allowable power dissipation at any ambient temperature is
PD = (T J(MAX) -TA)/ θJA . All numbers apply for packages soldered directly onto a PC board.
4. Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to
ground, the maximum output current is approximately 20mA independent of the magnitude of V+.
5. This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base
junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this
diode action, there is also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output
voltages of the comparators to go to the V+ voltage level (or to ground for a large overdrive) for the time duration that an input
is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which is negative,
again returns to a value greater than -0.3V.
6. The AP331A temperature specifications are limited to 0°C < TOP < +70°C.
7. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent
of the state of the output so no loading change exists on the reference or input lines.
8. The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V. The
upper end of the common-mode voltage range is V+-1.5V at 25°C, but either or both inputs can go to 36V without damage,
independent of the magnitude of V+.
9. The response time specified is for a 100mV input step with 5mV overdrive. For larger overdrive signals 300ns can be
obtained, see typical performance characteristics section.
10. Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the
common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than
-0.3V (or 0.3V below the magnitude of the negative power supply, if used).
11. At output switch point, VO ~ 1.4V, RS=0 with V+ from 5V to 30V; and over the full input common-mode range (0V to V+-1.5V),
at 25°C.
12. Test condition for SOT25 and sot25R: Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.
Basic Comparator 1/4 DM54XX briving CMOS 10m 75 pF V' pk om , 1.100an >—o V0 IOUK IOUK V’ O—Im, /\A\A :: IOUK Squarewave Oscillator
AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 5 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Application Information
The AP331A is high gain, wide bandwidth devices, like most comparators, can easily oscillate if the output lead is inadvertently
allowed to capacitively couple to the inputs via stray capacitance. This shows up only during the output voltage transition intervals as the
comparator change states. Power supply bypassing is not required to solve this problem. Standard PC board layout is helpful as it
reduces stray input-output coupling. Reducing the input resistors to < 10k reduces the feedback signal levels and finally, adding even a
small amount (1.0 to 10 mV) of positive feedback (hysteresis) causes such a rapid transition that oscillations due to stray feedback are
not possible. Simply socketing the IC and attaching resistors to the pins will cause input-output oscillations during the small transition
intervals unless hysteresis is used. If the input signal is a pulse waveform, with relatively fast rise and fall times, hysteresis is not required.
All input pins of any unused comparators should be tied to the negative supply.
The bias network of the AP331A establishes a drain current independent of the magnitude of the power supply voltage over the
range of from 2.0 VDC to 30 VDC. It is usually unnecessary to use a bypass capacitor across the power supply line.
The differential input voltage may be larger than V+ without damaging the device (Note 10). Protection should be provided to
prevent the input voltages from going negative more than -0.3 VDC (at 25°C). An input clamp diode can be used as shown in the
applications section.
The output of the AP331A is the uncommitted collector of a grounded-emitter NPN output transistor. Many collectors can be tied
together to provide an output OR’ing function. An output pull-up resistor can be connected to any available power supply voltage within
the permitted supply voltage range and there is no restriction on this voltage due to the magnitude of the voltage applied to the
V+ terminal of the AP331A package. The output can also be used as a simple SPST switch to ground (when a pull-up resistor is not used).
The amount of current the output device can sink is limited by the drive available (which is independent of V+) and the β of this device.
When the maximum current limit is reached (approximately 16mA), the output transistor will come out of saturation and the output voltage
will rise very rapidly. The output saturation voltage is limited by the approximately 60 rSAT of the output transistor. The low offset voltage
of the output transistor (1.0 mV) allows the output to clamp essentially to ground level for small load currents.
Typical Circuit ( VCC = 5.0VDC )
VO
3.0K
V+
+VIN
+VREF
+
-
+
-
+5.0VDC
100K
1/4 MM54CXX
R1 D1 ’9 1M 1N914 ~15K 71¢ D2 7 100K 1N514 H‘N 8C'F'F Sus 6015 "g , f‘ ' 'oh (2 1 4) AP331A Vu 1M +15ch own + I | IHI V7 'For \arge lanes ofR1/FQ‘ D1 can l he omvtted Pulse Generator 0 +40 0 v=+3och +25Cl’nVDcf v55 +5ch 7UDHzEfu5 1UOKHz 0 +Vv~ 07 + AP331A 1—0 va +Vxn ()7 ' Basic Comparator
AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 6 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Typical Circuit (Continued) (VCC = 5.0VDC)
Crystal Controlled Oscillator
+
-
VO
200K
0.1µF
2.0K
V+
V+
100K
200K
0
CRYSTAL
f=100KHz
AP331A
+
-
+
-
+
-
+VC
FREQUENCY
CONTROL
VOLTAGE
INPUT
0.1µF
10
20K
20K
50K
V+/2
OUTPUT2
OUTPUT1
500pF
V+
0.01µF
3.0K
5.1K
100K
3.0K
V+
Two-Decade High Frequency VCO
V+/2
AP331A
AP331A
AP331A
100K
Non-Inverting Comparator with
Hysteresis
VO
3K
V+
+VIN
+VREF
+
-
10M
10K
AP331A
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AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 7 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Typical Circuit (Continued) (VCC = 5.0VDC)
AND Gate
f
3K
V+
A
+
-
1K
B
C
1K
100K
100K
100K
39K
+0.375V
0"0" "1"
AP331A
V+
Or Gate
3K
V+
A
+
-
1K
B
C
1K
100K
100K
100K
200K
+0.075V
V+
0"0" "1"
f
AP331A
Large Fan-in AND Gate
R4
3K
V+
A+
-
D1
B
C
100K
10K
V+
0"0" "1"
D
D2
D3
D4
ALL DIODES 1N914
100K VOUT
AP331A
Limit Comparator
+
-
+
-
2RS
2RS
RS
10K
V+ (12VDC)
LAMP
12 ESB
+VIN
+VREF LOW
+VREF HI
2N2222
AP331A
AP331A
10m 4‘12N2222 Wm. 0% _ 10m -sz o—wr Comparing Input Voltages ol Opposite Polarity v Bi-stable Multivihrator
AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 8 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Typical Circuit (Continued)
(VCC = 5.0VDC)
ORing the Outputs
+
-
+
-
3.0K
VO
V+
AP331A
AP331A
Zero Crossing Detector
(Single Power Supply)
5.1K
V+
+
-
VO
100K 100K
5.1K5.1K
1N914
VIN
10K
20M
AP331A
One-Shot Multivibrator
10K
V+
+
-
VO
1N914
1M 1N914
100pF
0.001µF
1M
1M
+
0t0
PW
t0t1
0
V+
1ms
AP331A
109K +Vm Oi»; One-Shot Multivibrator with Input Lock Out v o l :? 3.0K 10K f; 15K f; E: 2UCK 12:“ , 10K + AP331A 7%) vm v3 ¥ .» 10M 3-0“ _ £51K N, V V51 10K 10K \ + D 4 AP331A c1 '0 '4 “moi + D.UU1uF 1 AP331A 74) vu2 INPUT GATING SIGNAL V2 ¥ . 10M 1': 3.0K -:5|K w, , V. 19K + T v; ’ V21 V2 AP331A 74> v01 \ V1 v1 0 _ m c. (2 L: t. i t iSIK Time Delay Generator
AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 9 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Typical Circuit (Continued)
(VCC = 5.0VDC)
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AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 10 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Split-Supply Applications
(V+ = +15VDC and V- = -15 VDC)
+
-
+
-
+
-
2.4K
2.4K
φ
A
φ
B
2K8.2K
3.9K2K
V+
10K
51K
51K
5.1K
50pF
V-
6.8K
MOS Clock Driver
AP331A
AP331A
AP331A
AP331A
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AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 11 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Typical Characteristics
Supply Current Input Current
Response Time for Various Input
Overdrives—Negative Transition Response Time for Various Input
Overdrives—Positive Transition
Output Saturation Voltage
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AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 12 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Marking Information
(1) SOT25 and SOT25R
1 2 3
5
7
4
XX YW X
( Top View )
XX : Identification code
W : Week : A~Z : 1~26 week;
X : A~Z : Green
Y : Year 0~9
a~z : 27~52 week; z represents
52 and 53 week
Part Number Package Identification Code
AP331A SOT25 R9
AP331A SOT25R R3
Package Information (All Dimensions in mm)
(1) Package Type: SOT25 and SOT25R
IMPORTANT NOTICE Diodes \ncovpurated and us suosrorahes reserve me "am ro make moomcahons, enhancements. Improvements oonecuens or other changes unhour runner hohce re any producr herem, Dmdes \ncmparahad does nor assume any haorhry ansmg um 01 (he apohcauon or use or any manual oescnoeo havem‘ henher ooes n convey any noehse unoer ns parent nghts‘ hor Ihe name or umevs The user 0! products m such aophcahons 5th assume an nsks or such use and will agreem norm Diodes Incorporated and aH me campameswhuse preoums are remesemed on ourwebsna harmless agarnsr 3H damages. LIFE SUPPORT Diodes Incmpma|ed products are nor aulhuhzedlor useascnhca‘cnmponems rnhresuppon devices or systemswmhum me expressed wmreh approva‘ oune Presrdem or Drones \hceroorareo
AP331A
SINGLE DIFFERENTIAL COMPARATOR
AP331A Rev. 2 13 of 13 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
IMPORTANT NOTICE
LIFE SUPPORT
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither
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