AS1974_技术文档

Data Sheet

AS1970 - AS1975

Low-Voltage Single/Dual/Quad Comparators

1 General Description

2 Key Features

ꢀ CMOS Push/Pull Output Sinks and Sources 8mA

The AS1970 - AS1975 are single/dual/quad compara-

tors that operate with supplies from 2.5 to 5.5V making

them perfect for all 3- and 5-volt applications. The com-

parators can also operate with dual supplies (±1.25 to

±2.75V), and require very little supply current (down to

8.5µA) with minimal propagation delay (300ns).

(AS1970/AS1972/AS1974)

ꢀ CMOS Open-Drain Output Voltage Extends Beyond

VCC (AS1971/AS1973/AS1975)

ꢀ Quiescent Supply Current: 8.5µA per Comparator

ꢀ Internal Hysteresis: 3mV

Low input bias current (1.0pA, typ), low input offset volt-

age (0.5mV, typ), and internal hysteresis (3mV) make

these comparators ideal for low-power single-cell appli-

cations including power-management and power-moni-

toring systems.

ꢀ 3V/5V Logic-Level Translation

ꢀ Single-Supply Operation: 2.5 to 5.5V

ꢀ Common-Mode Input Voltage Range Extends

The comparators are available as the standard products

listed in Table 1.

250mV Above the Rails

Table 1. Standard Products

ꢀ Low Propagation Delay: 300ns

Model

Output Type

Push/Pull

ꢀ Minimized Overall Power Consumption

ꢀ Supply Current @1MHz Switching Frequency: 80µA

ꢀ No Phase Reversal for Overdriven Inputs

AS1970/AS1972/AS1974

AS1971/AS1973/AS1975

Open-Drain

The AS1970/AS1972/AS1974 push/pull output can sink

or source current.

ꢀ Package Types:

- 5-pin SOT23 – AS1970/AS1971

- 8-pin MSOP – AS1972/AS1973

- 14-pin TSSOP – AS1974/AS1975

The AS1971/AS1973/AS1975 open-drain output can be

pulled beyond VCC to a maximum of 5.5V > VEE. These

open-drain versions are ideal for logic-level translators

or bipolar-to-unipolar converters.

Large internal output drivers allow Rail-to-Rail output

swings with loads of up to 8mA.

3 Applications

The devices are ideal for battery-powered systems,

mobile communication devices, zero-crossing detectors,

window comparators, level translators, threshold detec-

tors/discriminators, ground/supply-sensing applications,

IR receivers or any other space-limited application with

low power-consumption requirements.

The AS1970/AS1971 are available in a 5-pin SOT23

package. The AS1972/AS1973 are available in a 8-pin

MSOP package. The AS1974/AS1975 are available in a

14-pin TSSOP package.

Figure 1. Block Diagrams

+

INA+

OUTA

–

+

INA-

INA+

INA-

+

–

+

–

OUTA

IN+

IN-

INB+

INB-

INC+

INC-

IND+

IND-

VCC

–

OUTB

OUTC

OUT

VEE

+

–

+

–

INB+

OUTB

VEE

INB-

VCC

+

–

AS1972/AS1973

OUTD

VEE

AS1970/AS1971

AS1974/AS1975

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Revision 1.02

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AS1970

Data Sheet - Pinout and Packaging

4 Pinout and Packaging

Pin Assignments

Figure 2. Pin Assignments (Top View)

14 OUTD

IND-

OUTA

INA-

1

2

3

4

5

6

7

8

7

6

5

VCC

OUTA

INA-

INA+

VEE

1

2

3

4

OUT

VCC

IN+

1

2

5

VEE

13

12 IND+

INA+

VCC

OUTB

INB-

AS1972/

AS1973

AS1974/

AS1975

AS1970/

AS1971

VEE

11

10

9

INC+

INC-

INB+

INB-

INB+

IN-

4

3

OUTC

OUTB

8

5-pin SOT23

8-pin MSOP

14-pin TSSOP

Pin Descriptions

Table 2. Pin Descriptions

Pin Number

Pin Name

IN-

Description

Comparator Inverting Input

Comparator Non-Inverting Input

Comparator A Inverting Input

IN+

INA-

Comparator A Non-Inverting Input

Comparator B Inverting Input

Comparator B Non-Inverting Input

Comparator C Inverting Input

Comparator C Non-Inverting Input

Comparator D Inverting Input

Comparator D Non-Inverting Input

Comparator Output

INA+

INB-

INB+

INC-

INC+

IND-

See Figure 2

IND+

OUT

OUTA

OUTB

OUTC

OUTD

VCC

Comparator A Output

Comparator B Output

Comparator C Output

Comparator D Output

Positive Supply Voltage

Negative Supply Voltage

VEE

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AS1970

Data Sheet - Absolute Maximum Ratings

5 Absolute Maximum Ratings

Stresses beyond those listed in Table 3 may cause permanent damage to the device. These are stress ratings only,

and functional operation of the device at these or any other conditions beyond those indicated in Section 6 Electrical

Characteristics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may

affect device reliability.

Table 3. Absolute Maximum Ratings

Parameter

Min

Max Units

Comments

Supply Voltage VCC to VEE

7

V

VCC

+ 0.3

INx+, INx- to VEE

-0.3

VCC

AS1970/AS1972/AS1974 -0.3

AS1971/AS1973/AS1975 -0.3

V

+ 0.3

OUTx to VEE

+7

10

V

s

OUTx Short-Circuit Duration to VEE or VCC

5-pin SOT23

571

727

+85

+150

mW

ºC

Derate 7.1mW/ºC above +70ºC

Derate 9.1mW/ºC above +70ºC

Continuous Power

Dissipation

8-pin MSOP

(TAMB = +70ºC)

14-pin TSSOP

Operating Temperature Range

-40

-65

Junction Temperature Range

Storage Temperature Range

ºC

The reflow peak soldering temperature

(body temperature) specified is in

accordance with IPC/JEDEC J-STD-

020C “Moisture/Reflow Sensitivity

Classification for Non-Hermetic Solid

State Surface Mount Devices”.

Package Body Temperature

260

ºC

The lead finish for Pb-free leaded

packages is matte tin (100% Sn).

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AS1970

Data Sheet - Electrical Characteristics

6 Electrical Characteristics

VCC = 2.7 to 5.5V, VEE = 0V, VCM = 0V, TAMB = -40 to +85ºC (unless otherwise specified). Typ values are at TAMB = +25ºC.

Table 4. Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max Units

Supply Voltage

VCC

Inferred from PSRR test

2.5

5.5

64

32

19

60

30

18

V

VCC = 5V, No Load, AS1974/AS1975

VCC = 5V, No Load, AS1972/AS1973

VCC = 5V, No Load, AS1970, AS1971

VCC = 2.7V, No Load, AS1974/AS1975

VCC = 2.7V, No Load, AS1972/AS1973

VCC = 2.7V, No Load, AS1970, AS1971

2.5V ≤ VCC ≤ 5.5V, TAMB = +25ºC

36

18

11

34

17

10

80

IDD

Supply Current

µA

Power-Supply Rejection Ratio

Common-Mode Voltage Range ¹

PSRR

55

dB

V

VEE

- 0.25

VCC

+ 0.25

TAMB = +25ºC

VCMR

TAMB = -40 to +85ºC

VEE

VCC

±6

Full Common-Mode Range,

TAMB = +25ºC

±0.5

Input Offset Voltage ²

Input Hysteresis

VOS

mV

Full Common-Mode Range,

TAMB = -40 to +85ºC

±8

10

VHYS

IB

±3

mV

nA

Input Bias Current ^{3, 4}

Input Offset Current

0.001

IOS

CIN

0.5

3.5

80

pA

pF

dB

µA

Input Capacitance

Common-Mode Rejection Ratio

Output Leakage Current

CMRR

ILEAK

TAMB = +25ºC

52

AS1971/AS1973/AS1975 only

1.0

Sourcing or Sinking, VOUT = VEE or VCC,

VCC = 5V

60

18

Output Short-Circuit Current

ISC

mA

Sourcing or Sinking, VOUT = VEE or VCC,

VCC = 2.7V

VCC = 5V, ISINK = 8mA,

TAMB = +25ºC

0.2

0.4

0.55

0.3

VCC = 5V, ISINK = 8mA,

TAMB = -40 to +85ºC

OUTx Output Voltage Low

VOL

V

VCC = 2.7V, ISINK = 3.5mA,

TAMB = +25ºC

0.15

4.85

2.55

VCC = 2.7V, ISINK = 3.5mA,

TAMB = -40 to +85ºC

0.4

VCC = 5V, ISINK = 8mA,

TAMB = +25ºC

4.6

4.45

2.4

VCC = 5V, ISINK = 8mA,

TAMB = -40 to +85ºC

OUTx Output Voltage High

(AS1970/AS1972/AS1974 only)

VOH

V

VCC = 2.7V, ISINK = 3.5mA,

TAMB = +25ºC

VCC = 2.7V, ISINK = 3.5mA,

TAMB = -40 to +85ºC

2.3

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AS1970

Data Sheet - Electrical Characteristics

Table 4. Electrical Characteristics (Continued)

Symbol

Parameter

Conditions

Min

Typ

32

50

80

22

32

60

Max Units

VCC = 5V, CLOAD = 15pF

VCC = 5V, CLOAD = 50pF

VCC = 5V, CLOAD = 200pF

VCC = 5V, CLOAD = 15pF

VCC = 5V, CLOAD = 50pF

VCC = 5V, CLOAD = 200pF

OUTx Rise Time

(AS1970/AS1972/AS1974 only)

tRISE

ns

OUTx Fall Time

tFALL

ns

AS1970/AS1972/AS1974 only,

CLOAD = 15pF, 10mV Overdrive

400

300

AS1970/AS1972/AS1974 only,

CLOAD = 15pF, 100mV Overdrive

AS1971/AS1973/AS1975 only,

CLOAD = 15pF, RPULLUP = 5.1kΩ,

10mV Overdrive

tPD-

400

Propagation Delay

ns

AS1971/AS1973/AS1975 only, CLOAD =

15pF, RPULLUP = 5.1kΩ,

300

420

100mV Overdrive

AS1970/AS1972/AS1974 only,

CLOAD = 15pF, 10mV Overdrive

tPD+

tPU

AS1970/AS1972/AS1974 only,

CLOAD = 15pF, 100mV Overdrive

270

20

Power-Up Time

µs

1. Inferred from the VOS test. Both or either inputs can be driven 0.3V beyond either supply rail without output

phase reversal.

2. VOS is defined as the center of the hysteresis band at the input.

3. IB is defined as the average of the two input bias currents (IB-, IB+).

4. Guaranteed by design.

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AS1970

Data Sheet - Typical Operating Characteristics

7 Typical Operating Characteristics

Figure 3. Supply Current vs. Temperature

(per comparator)

Figure 4. Supply Current vs. Output Transition

Frequency (per comparator)

1000

18

16

14

12

100

10

1

VCC = 5V

10

8

VCC = 2.7V

VCC = 3V

6

-60 -40 -20

0

20 40 60 80 100

0.1

1

10

100

1000

Temp (°C)

Output Transition Frequency (kHz)

Figure 5. VOL vs. ISINK; VIN+ < VIN-

Figure 6. VOH vs. ISOURCE ; VIN+ > VIN-

1000

100

VCC = 2.7V

VCC = 5V

10

1

VCC = 5V

10

1

0.1

0.01

0.1

1

10

100

0.01

0.1

1

10

100

Output Source Current (mA)

Output Sink Current (mA)

Figure 7. ISINK vs. Temperature

Figure 8. VOS vs. Temperature

100

90

3.00

2.90

2.80

2.70

2.60

2.50

2.40

2.30

2.20

2.10

2.00

80

VCC = 5V

70

60

50

40

30

VCC = 2.7V

20

10

0

-60 -40 -20

0

20 40 60 80 100

-60 -40 -20

0

20 40 60 80 100

Temperature (°C)

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AS1970

Data Sheet - Typical Operating Characteristics

Figure 9. tPD+ vs. CLOAD; VCC = 3V, VOD = 50mV

Figure 10. tPD+ vs. CLOAD; VCC = 5V, VOD = 50mV

450

550

500

400

To VOUT = 50% of Final Value

350

450

400

350

300

To VOUT = 10% of Final Value

300

250

200

To VOUT = 10% of Final Value

250

0

200

400

600

800

1000

0

200

400

600

800

1000

Capacitive Load (pF)

Figure 11. tPD+ vs. Temperature; VOD = 50mV

Figure 12. tPD+ vs. VOD

290

600

280

500

400

To VOUT = 50% of Final Value

270

260

VCC = 2.7V

300

200

250

To VOUT = 10% of Final Value

VCC = 5V

240

-40 -20

0

20

40

60

80 100

0

40

80

120

160

200

Temperature (°C)

Input Overdrive (mV)

Figure 13. 1MHz Response; VOD = 50mV

Figure 14. Power-Up Delay; VOD = 50mV

400ns/Div

4µs/Div

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AS1970

Data Sheet - Typical Operating Characteristics

Figure 15. tPD+; VOD = 50mV

Figure 16. tPD-; VOD = 50mV

100ns/Div

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AS1970

Data Sheet - Detailed Description

8 Detailed Description

The AS1970 - AS1975 are single/dual/quad low-power, comparators. The devices operate with a supply voltage range

between 2.5 and 5.5V while consuming down to 8.5µA per comparator. Their common-mode input voltage range

extends 0.25V beyond each rail.

Internal hysteresis ensures clean output switching, even with slow input signals. Large internal output drivers allow rail-

to-rail output swing with up to 8mA loads.

The output stage design minimizes supply-current surges while switching, virtually eliminating the power supply tran-

sients typical. The AS1970/AS1972/AS1974 push/pull output stage sinks and sources current, wheras the AS1971/

AS1973/AS1975 open-drain output stage can be pulled beyond VCC to an absolute maximum of 5.5V > VEE.

Input Stage

The input common-mode voltage range extends from -0.25V to (VCC + 0.25V), and the comparators can operate at

any differential input voltage within this voltage range. Input bias (IB) current is 1.0pA (typ) if the input voltage is within

the common-mode voltage range.

Inputs are protected from over-voltage by internal ESD protection diodes connected to the supply rails. As the input

voltage exceeds the supply rails, these diodes become forward biased and begin to conduct and the bias currents

increase exponentially as the input voltage exceeds the supply rails.

Output Stage

The push/pull and open-drain output stages were designed to provide rail-to-rail operation with up to 8mA loads. Even

at loads of up to 8mA, the supply-current change during an output transition is extremely small (see Figure 4 on page

6). Figure 4 shows the minimal supply-current increase as the output switching frequency approaches 1MHz. This

characteristic eliminates the need for power-supply filter capacitors to reduce glitches created by comparator switching

currents.

Because of the unique design of its output stage, the AS1970 - AS1975 can dramatically increase battery life, even in

high-speed applications.

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AS1970

Data Sheet - Application Information

9 Application Information

Figure 17 shows a typical application circuit for the AS1970 - AS1975 comparators.

Figure 17. Typical Application Diagram – Threshold Detector

VIN

2

4

VCC

IN-

†

RPULLUP

AS1970 - AS1975

1

OUT

3

5

IN+

VEE

^†AS1971/AS1973/AS1975 only

Hysteresis (AS1970/AS1972/AS1974)

The AS1970/AS1972/AS1974 have 3mV internal hysteresis. Additional hysteresis can be generated with three resis-

tors using positive feedback (Figure 18), however this method also slows hysteresis response time.

Figure 18. Additional Hysteresis AS1970/AS1972/AS1974

VCC

R3

R1

VIN

+

–

VCC

VEE

OUT

R2

VREF

Resistor Selection Example

For the circuit shown in Figure 18, the following steps can be used to calculate values for R1, R2, and R3.

1. Select R3 first. The current through R3 should be at least 1µA to minimize errors caused by leakage current. The

current through R3 at the trip point is:

(VREF - VOUT)/R3

(EQ 1)

The two possible output states in solving for R3 yields these two formulas:

R3 = VREF/1µA

(EQ 2)

(EQ 3)

R3 = (VREF - VCC)/1µA

For example, for VREF = 1.2V and VCC = 5V, the two R3 resistor values are 1.2MΩ and 3.8MΩ. Use the smaller of

the two resulting resistor values; in this case a standard 1.2MΩ resistor should be used for R3.

2. Choose the hysteresis band (VHB). For this example, use VHB = 50mV.

3. Calculate R1 according to the following equation:

R1 = R3(VHB/VCC)

Substituting the example values for R3 and VHB gives:

(EQ 4)

R1 = 1.2MΩ(50mV/5V) = 12kΩ

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AS1970

Data Sheet - Application Information

4. Choose the trip point for VIN rising (VTHR) (see page 12). This is the threshold voltage at which the AS1970 -

AS1975 switches its output from low to high as VIN rises above the trip point. For this example, choose VTHR = 3V.

5. Calculate R2 as:

R2 = 1/[VTHR/(VREF x R1) - (1/R1) - (1/R3)]

Substituting the example values gives:

R2 = 1/[3.0V/(1.2V x 12kΩ) - (1/12kΩ) - (1/1.2MΩ)] = 8.05kΩ

In this example, a standard 8.2kΩ resistor should be used for R2.

6. Verify the trip voltages and hysteresis as:

VTHR = VREF x R1[(1/R1) + (1/R2) + (1/R3)]

(EQ 5)

(EQ 6)

(EQ 7)

(EQ 8)

VTHF = VTHR - (R1 x VCC/R3)

Hysteresis = VTHR - VTHF

Hysteresis (AS1971/AS1973/AS1975)

The AS1971/AS1973/AS1975 have 3mV internal hysteresis. Their open-drain outputs require an external pullup resis-

tor (Figure 19), and additional hysteresis can be generated using positive feedback.

Figure 19. Additional Hysteresis AS1971/AS1973/AS1975

VCC

R3

R4

R1

VIN

+

–

VCC

VEE

OUT

R2

VREF

Resistor Selection Example

For the circuit shown in Figure 19, the following steps can be used to calculate values for R1, R2, R3, and R4:

1. Select R3 according to one of:

R3 = VREF/500µA

R3 = (VREF - VCC)/500µA - R4

(EQ 9)

(EQ 10)

Use the smaller of the two resulting resistor values.

2. Choose the hysteresis band required (VHB). For this example, use 50mV.

3. Calculate R1 as:

R1 = (R3 + R4)(VHB/VCC)

(EQ 11)

4. Choose the trip point for VIN rising (VTHR) (see page 12). This is the threshold voltage at which the comparator

switches its output from low to high as VIN rises above the trip point.

5. Calculate R2 as:

R2 = 1/[VTHR /(VREF x R1) - (1/R1) - 1/(R3 + R4)]

6. Verify the trip voltages and hysteresis as follows:

(EQ 12)

VIN rising: VTHR = VREF x R1 x [1/R1 + 1/R2 + 1/(R3 + R4)]

VIN falling: VTHF = VREF x R1 x [1/R1 + 1/R2 + 1/(R3+R4)] - 1/(R3+R4) x VCC

Hysteresis = VTHR - VTHF

(EQ 13)

(EQ 14)

(EQ 15)

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AS1970

Data Sheet - Application Information

Hysteresis Band

Internal hysteresis creates two trip points (shown in Figure 20): rising input voltage (VTHR) and falling input voltage

(VTHF). The area between the trip points is the hysteresis band (VHB). When the comparator input voltages are equiva-

lent, the hysteresis effectively causes one comparator input to move quickly past the other, thus taking the input out of

the region where oscillation occurs.

In Figure 20 REF has a fixed voltage applied and IN+ is varied. If the inputs are reversed the output will be inverted.

Figure 20. Threshold Hysteresis Band

Thresholds

IN+

VTHR

Hysteresis

Band

REF

VTHF

VHB

OUT

Zero-Crossing Detector

Figure 21 shows the AS1970 in a zero-crossing detector circuit. The inverting input is connected to ground, and the

non-inverting input is connected to a 100mVp-p signal source. As the signal at the non-inverting input crosses 0V, the

signal at OUT changes states.

Figure 21. Zero-Crossing Detector

100mVp-p

3

+

1

IN+

4

OUT

–

IN-

AS1970

2

5

VCC

VEE

Logic Level Translator

The comparators can be used as a 5V/3V logic translator as shown in Figure 22. The circuit in Figure 22 converts 5V-

to 3V-logic levels, and provides the full 5V logic-swing without creating overvoltage on the 3V logic inputs. When the

comparator is powered by a 5V supply, RPULLUP for the open-drain output should be connected to the +3V supply volt-

age.

For 3V-to-5V logic-level translations, connect the +3V supply voltage to VCC and the +5V supply voltage to RPULLUP.

Figure 22. Logic Level Translator

2

+3/+5V

VCC

AS1971

100kΩ

RPullup

4

+

–

1

+5/+3V

Logic Out

IN-

3

+5/+3V

Logic In

OUT

IN+

5

VEE

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AS1970

Data Sheet - Application Information

Layout Considerations

The AS1970 - AS1975 requires proper layout and design techniques for optimum performance.

ꢀ

Power-supply bypass capacitors are not typically needed, although 100nF bypass capacitors should be used when

supply impedance is high, when supply leads are long, or when excessive noise is expected on the supply lines.

ꢀ

Minimize signal trace lengths to reduce stray capacitance.

A ground plane and surface-mount components are recommended.

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AS1970

Data Sheet - Package Drawings and Markings

10 Package Drawings and Markings

The AS1970 - AS1975 are available in a 5-pin SOT23 package and an 8-pin MSOP package.

Figure 23. 5-pin SOT23 Package

Symbol

Min

0.90

0.00

0.90

0.30

0.09

2.80

2.60

1.50

0.30

Max

1.45

0.15

1.30

0.50

0.20

3.05

3.00

1.75

0.55

A

A1

A2

b

C

D

E

E1

L

e

0.95 REF

1.90 REF

e1

α

0º

8º

Notes:

1. Controlling dimension is millimeters.

2. Foot length measured at intercept point between datum A and lead surface.

3. Package outline exclusive of mold flash and metal burr.

4. Package outline inclusive of solder plating.

5. Meets JEDEC MO178.

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AS1970

Data Sheet - Package Drawings and Markings

Figure 24. 8-pin MSOP Package

Symbol

A

Typ

1.10

0.10

0.86

3.00

2.95

4.90

3.00

2.95

0.51

0.15

0.31

0.41

±Tol

Max

Symbol

Typ

0.33

±Tol

+0.07/-0.08

±0.05

b

b1

c

A1

A2

D

±0.05

0.30

±0.08

0.18

±0.05

±0.10

c1

0.15

+0.03/-0.02

±3.0º

D2

E

±0.10

3.0º

θ1

θ2

θ3

L

±0.15

12.0º

±3.0º

E1

E2

E3

E4

R

±0.10

12.0º

±3.0º

±0.10

0.55

±0.15

±0.13

L1

aaa

bbb

ccc

e

0.95 BSC

0.10

–

±0.13

+0.15/-0.08

±0.08

0.08

R1

t1

0.25

0.65 BSC

0.525 BSC

t2

±0.08

S

Notes:

1. All dimensions are in millimeters and all angles in degrees (unless otherwise noted).

2. Datums B and C to be determined at datum plane H.

3. Dimensions D and E1 are to be determined at datum plane H.

4. Dimensions D2 and E2 are for the top package; dimensions D and E1 are for the bottom package.

5. Cross section A-A to be determined at 0.13 to 0.25mm from the leadtip.

6. Dimensions D and D2 do not include mold flash, protrusion, or gate burrs.

7. Dimensions E1 and E2 do not include interlead flash or protrusion.

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AS1970

Data Sheet - Package Drawings and Markings

Figure 25. 14-pin TSSOP Package

0.65mm Lead Pitch ^{1, 2}

Symbol

0.65mm Lead Pitch ^{1, 2}

Note Symbol

Note

Min

-

Nom

Max

1.10

0.15

0.95

0.75

-

Min

0º

Nom

-

Max

8º

A

A1

A2

L

-

θ1

L1

aaa

bbb

ccc

ddd

0.05

0.85

0.50

0.09

0.19

0.09

1.0 Ref

0.10

0.05

0.20

0.65 BSC

12º Ref

0.90

0.60

-

R

R1

b

b1

c

-

0.30

0.25

0.20

0.16

5

e

0.22

-

θ2

θ3

c1

Variations

D

E1

E

4.90

4.30

5.00

1.40

6.4 BSC

5.10

4.50

3, 8

4, 8

e

N

0.65 BSC

14

6

Notes:

1. All dimensions are in millimeters; angles in degrees.

2. Dimensions and tolerancing per ASME Y14.5M-1994.

3. Dimension D does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not

exceed 0.15mm per side.

4. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.25mm

per side.

5. Dimension b does not include dambar protrusion. Allowable dambar protrusion shall be 0.08mm total in excess of

dimension b at maximum material condition. Dambar cannot be located on the lower radius of the foot. Minimum

space between protrusion and adjacent lead is 0.07mm for 0.5mm pitch packages.

6. Terminal numbers shown are for reference only.

7. Datums A and B to be determined at datum plane H.

8. Dimensions D and E1 to be determined at datum plane H.

9. This dimension applies only to variations with an even number of leads per side. For variations with an odd number

of leads per package, the center lead must be coincident with the package centerline, datum A.

10. Cross section A-A to be determined at 0.10 to 0.25mm from the leadtip.

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Revision 1.02

16 - 18

AS1970

Data Sheet - Ordering Information

11 Ordering Information

The comparators are available as the standard products shown in Table 5.

Table 5. Ordering Information

Model

Marking

ASI6

Description

Delivery Form

Tape and Reel

Tubes

Package

AS1970-T

AS1971-T

AS1972

Low-Voltage Single Comparator, Push/Pull

Low-Voltage Single Comparator, Open-Drain

Low-Voltage Dual Comparator, Push/Pull

Low-Voltage Dual Comparator Push/Pull

Low-Voltage Dual Comparator, Open-Drain

Low-Voltage Quad Comparator, Push/Pull

Low-Voltage Quad Comparator, Open-Drain

5-pin SOT23

8-pin MSOP

14-pin TSSOP

ASI7

989

AS1972-T

AS1973

989

Tape and Reel

Tubes

990

AS1973-T

AS1974

990

Tape and Reel

Tubes

AS1974

AS1975

AS1974-T

AS1975

Tape and Reel

Tubes

AS1975-T

Tape and Reel

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Revision 1.02

17 - 18

AS1970

Data Sheet

Copyrights

lated, stored, or used without the prior written consent of the copyright owner.

All products and companies mentioned are trademarks or registered trademarks of their respective companies.

Disclaimer

Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing

in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding

the information set forth herein or regarding the freedom of the described devices from patent infringement. austriami-

crosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior

to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information.

This product is intended for use in normal commercial applications. Applications requiring extended temperature

range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-

sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for

each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard

production flow, such as test flow or test location.

The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However,

austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to

personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or

consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the tech-

nical data herein. No obligation or liability to recipient or any third party shall arise or flow out of

austriamicrosystems AG rendering of technical or other services.

Contact Information

Headquarters

austriamicrosystems AG

A-8141 Schloss Premstaetten, Austria

Tel: +43 (0) 3136 500 0

Fax: +43 (0) 3136 525 01

For Sales Offices, Distributors and Representatives, please visit:

http://www.austriamicrosystems.com/contact

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Revision 1.02

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型号：	AS1974
厂家：	AMS(艾迈斯)
描述：	Low-Voltage Single/Dual/Quad Comparators 低电压单路/双路/四路比较器比较器
文件：	总18页 (文件大小：754K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AS1974 [AMSCO]

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