AP331AWG-7_技术文档

AP331A

SINGLE DIFFERENTIAL COMPARATOR

General Description

Features

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.

•

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)

•

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.

•

Applications

•

High precision comparators

Reduced V_OSdrift 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

AP331A XX G - 7

Packing

Package

Lead Free

G : Green

W : SOT25

WR : SOT25R

7 : Tape & Reel

7” Tape and Reel

Packaging

(Note 2)

Package

Device

Code

Quantity

Part Number Suffix

3000/Tape & Reel

-7

W

SOT25

AP331AWG-7

WR

SOT25R

AP331AWRG-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.

AP331A Rev. 2

1 of 13

FEBRUARY 2009

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AP331A

SINGLE DIFFERENTIAL COMPARATOR

Pin Assignments

(1) SOT25

(2) SOT25R

( Top View )

IN-

GND

IN+

GND

IN-

1

2

3

5

1

2

3

5

Vcc

4 Output

Pin Descriptions

Pin No.

Pin Name

Description

SOT25R

SOT25

IN-

GND

IN+

1

2

3

4

5

3

2

1

4

5

Input-

Ground

Input+

Output

Vcc

Output

Power Supply

Block Diagram

V⁺

3.5μA

100μA

3.5μA

100μA

Q2

Q3

+INPUT

Q1

Q4

OUTPUT

Q5

-INPUT

Q6

Q8

Q7

AP331A Rev. 2

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AP331A

SINGLE DIFFERENTIAL COMPARATOR

Absolute Maximum Ratings

Symbol

V_CC

Parameter

Rating

40

-0.3 to +40

50

Unit

V

mA

Supply Voltage

V_IN

I_CC

Differential Input Voltage (Note 10)

Input Voltage

Input Current (V_IN-0.3V) (Note 5)

SOT25

SOT25R

P_D

Power Dissipation (Note 3)

740

mW

Output Short-Circuit to Ground (Note 4)

Operating Junction Temperature Range

Storage Temperature Range

Continuous

+150

-65 to +150

T_J

T_ST

^oC

Recommended Operating Conditions

Symbol

V_CC

V_IN

T_A

Parameter

Min

Max

+36

±18

±36

+18

70

Unit

V

Supply Voltage (Single)

+2

±1

0

-18

0

Supply Voltage (Dual Supplies, V⁺VS GND)

Differential Input Voltage (Single) (Note 10)

Differential Input Voltage (Dual Supplies) (Note 10)

Operating Ambient Temperature

V

^oC

Electrical Characteristics

(V_CC= 5V, T_A= 25^oC, unless otherwise stated)

Symbol

V_OFFSETInput Offset Voltage

Parameter

Conditions

(Note 11)

Min

-

Typ.

4.0

Max Unit

8.0

mV

I_IN(+) or I_IN(-) with Output In

Linear Range, V_CM= 0V

(Note 7)

I_BIAS

Input Bias Current

-

150

400

nA

I_OFFSET

Input Offset Current

Input Common Mode Voltage

Range

I_IN(+) - I_IN(-) V_CM= 0V

V⁺= 30V (Note 8)

-

70

-

150

V⁺-1.5

nA

V

0

V⁺= 5V

-

0.4

1

2.5

I_CC

Supply Current

Voltage Gain

R_L= ∞

mA

V⁺= 36V

R_L> 15kΩ, V⁺= 15V

V_O= 1V to 11V

50

200

-

V/mV

V_IN= TTL Logic Swing,

Large Signal Response Time

V

_REF= 1.4V, V_RL= 5V,

-

300

-

ns

R_L= 5.1kΩ

V_RL= 5V, R_L= 5.1kΩ

(Note 9)

V_IN(-) = 1V, V_IN(+) = 0,

V_O< 1.5V

V_IN(-) = 1V, V_IN(+) = 0,

I_SINK< 4mA

V_IN(-) = 0, V_IN(+) = 1V,

V_O= 5V

Response Time

-

6.0

-

1.3

16

-

μs

mA

mV

nA

I_O(Sink)

V_SAT

Output Sink Current

Saturation Voltage

Output Leakage Current

-

400

-

250

0.1

I_O(Leak)

-

AP331A Rev. 2

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FEBRUARY 2009

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AP331A

SINGLE DIFFERENTIAL COMPARATOR

Electrical Characteristics

( V_CC= 5V ) ( Note 6 )

Symbol

V_OFFSETInput Offset Voltage

I_OFFSET

I_BIAS

Parameter

Conditions

(Note 11)

I_IN(+) -I_IN(-), V_CM= 0V

I_IN(+) or I_IN(-) with Output In

Linear Range, V_CM= 0V

(Note 7)

Min

-

Typ.

-

Max Unit

9

200

mV

nA

Input Offset Current

Input Bias Current

-

500

nA

Input Common Mode Voltage

Range

V⁺=30V (Note 8)

0

-

V⁺-2.0

700

1.0

V

mV

μA

V_IN(-) = 1V, V_IN(+) = 0, I_SINK

4mA

<

V_SAT

Saturation Voltage

V_IN(-) = 0, V_IN(+) = 1V,

V_O= 30V

I_O(Leak)

Output Leakage Current

Differential Input Voltage

-

Keep All V_IN’s > 0V (or V^-, if

Used), (Note 10)

-

36

V

SOT25 (Note 12)

SOT25R (Note 12)

SOT25 (Note 12)

Thermal Resistance

Junction-to-Ambient

Thermal Resistance

Junction-to-Case

θ_JA

θ_JC

173

37

^oC/W

SOT25R (Note 12)

Notes:

3. The maximum power dissipation is a function of T_J(MAX), θ_JA. The maximum allowable power dissipation at any ambient temperature is

P

_D= (T _J(MAX)-T_A)/ θ_JA. 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 < T

< +70°C.

OP

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, V_O~ 1.4V, R_S=0Ω 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.

AP331A Rev. 2

4 of 13

FEBRUARY 2009

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AP331A

SINGLE DIFFERENTIAL COMPARATOR

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 < 10kΩ 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 V_DCto 30 V_DC. 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 V_DC(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 60Ω r_SATof 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 ( V_CC= 5.0V_DC

)

+5.0V_DC

V⁺

3.0K

V_O

+V_IN

+

-

100K

+

-

+V_REF

1/4 MM54CXX

AP331A Rev. 2

5 of 13

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FEBRUARY 2009

AP331A

SINGLE DIFFERENTIAL COMPARATOR

Typical Circuit (Continued) (V_CC= 5.0V_DC)

V⁺

200K

2.0K

100K

V⁺

0

-

0.1µF

V_O

AP331A

+

200K

CRYSTAL

f=100KHz

Crystal Controlled Oscillator

V⁺

100K

500pF

AP331A

-

+

3.0K

5.1K

3.0K

10

+

-

+V_C

FREQUENCY

CONTROL

VOLTAGE

INPUT

0.1µF

0.01µF

OUTPUT1

AP331A

V⁺/2

20K

50K

20K

OUTPUT2

V⁺/2

-

AP331A

+

Two-Decade High Frequency VCO

V⁺

3K

-

+V_REF

AP331A

V_O

10K

+

+V_IN

10M

Non-Inverting Comparator with

Hysteresis

AP331A Rev. 2

6 of 13

FEBRUARY 2009

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AP331A

SINGLE DIFFERENTIAL COMPARATOR

Typical Circuit (Continued) (V_CC= 5.0V_DC)

V⁺

200K

3K

39K

3K

+0.075V

-

+0.375V

-

1K

100K

f

AP331A

100K

f

AP331A

A

B

C

A

B

C

100K

+

1K

V⁺

0

1K

V⁺

0

"0" "1"

Or Gate

AND Gate

V⁺

V⁺(12V_DC

)

2R_S

R4

3K

100K

+V_{REF HI}

+

-

10K

D1

-

100K

AP331A

V_OUT

LAMP

12 ESB

AP331A

V⁺

0

"0" "1"

+

R_S

A

B

D2

D3

+V_IN

+

-

C

D

D4

2N2222

AP331A

2R_S

ALL DIODES 1N914

+V_{REF LOW}

Limit Comparator

Large Fan-in AND Gate

AP331A Rev. 2

7 of 13

FEBRUARY 2009

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AP331A

SINGLE DIFFERENTIAL COMPARATOR

Typical Circuit (Continued)

(V_CC= 5.0V_DC)

V⁺

+

3.0K

V_O

AP331A

-

+

-

ORing the Outputs

V⁺

+

0

100K

5.1K 5.1K

100K

-

5.1K

t₀

1M

10K

100pF

1N914

V_IN

-

1N914

1M

AP331A

V_O

AP331A

V_O

+

V⁺

20M

1ms

PW

0.001µF

1N914

0

t₀

t₁

1M

10K

Zero Crossing Detector

(Single Power Supply)

One-Shot Multivibrator

AP331A Rev. 2

8 of 13

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FEBRUARY 2009

AP331A

SINGLE DIFFERENTIAL COMPARATOR

Typical Circuit (Continued)

(V_CC= 5.0V_DC)

AP331A Rev. 2

9 of 13

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FEBRUARY 2009

AP331A

SINGLE DIFFERENTIAL COMPARATOR

Split-Supply Applications

(V⁺= +15V_DCand V^-= -15 V_DC

)

V⁺

51K

2K 3.9K

10K

51K

2.4K

-

φ

A

B

AP331A

+

AP331A

8.2K

2K

-

+

-

5.1K

50pF

6.8K

V^-

MOS Clock Driver

AP331A Rev. 2

10 of 13

FEBRUARY 2009

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AP331A

SINGLE DIFFERENTIAL COMPARATOR

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

AP331A Rev. 2

11 of 13

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FEBRUARY 2009

AP331A

SINGLE DIFFERENTIAL COMPARATOR

Marking Information

(1) SOT25 and SOT25R

( Top View )

5

4

XX : Identification code

Y : Year 0~9

W X

XX Y

W : Week : A~Z : 1~26 week;

a~z : 27~52 week; z represents

52 and 53 week

X : A~Z : Green

1

2

3

Part Number

Package

Identification Code

AP331A

SOT25

SOT25R

R9

R3

Package Information (All Dimensions in mm)

(1) Package Type: SOT25 and SOT25R

AP331A Rev. 2

12 of 13

FEBRUARY 2009

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AP331A

SINGLE DIFFERENTIAL COMPARATOR

IMPORTANT NOTICE

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

does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will

agreeto hold Diodes Incorporatedand all the companieswhose products are represented onour website, harmlessagainst all damages.

LIFE SUPPORT

Diodes Incorporated productsare not authorizedfor use as criticalcomponents in lifesupport devices or systemswithout theexpressed written approval of the

President of DiodesIncorporated.

AP331A Rev. 2

13 of 13

FEBRUARY 2009

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型号：	AP331AWG-7
厂家：	DIODES INCORPORATED
描述：	SINGLE DIFFERENTIAL COMPARATOR 单差分比较器比较器
文件：	总13页 (文件大小：269K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AP331AWG-7 [DIODES]

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