AS1973-T [AMSCO]
Low-Voltage Single/Dual/Quad Comparators; 低电压单路/双路/四路比较器型号: | AS1973-T |
厂家: | AMS(艾迈斯) |
描述: | Low-Voltage Single/Dual/Quad Comparators |
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 |
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
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
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
727
+85
+150
+150
mW
mW
mW
ºC
Derate 7.1mW/ºC above +70ºC
Derate 9.1mW/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
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
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
1000
100
100
VCC = 2.7V
VCC = 2.7V
VCC = 5V
10
1
VCC = 5V
10
1
0.1
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)
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
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)
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
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
+3/+5V
VCC
AS1971
100kΩ
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
0.51
0.15
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
+0.15/-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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Revision 1.02
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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
0.09
0.19
0.19
0.09
0.09
1.0 Ref
0.10
0.10
0.05
0.20
0.65 BSC
12º Ref
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
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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
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 Dual Comparator, Open-Drain
Low-Voltage Quad Comparator, Push/Pull
Low-Voltage Quad Comparator, Push/Pull
Low-Voltage Quad Comparator, Open-Drain
Low-Voltage Quad Comparator, Open-Drain
5-pin SOT23
5-pin SOT23
8-pin MSOP
8-pin MSOP
8-pin MSOP
8-pin MSOP
14-pin TSSOP
14-pin TSSOP
14-pin TSSOP
14-pin TSSOP
ASI7
989
AS1972-T
AS1973
989
Tape and Reel
Tubes
990
AS1973-T
AS1974
990
Tape and Reel
Tubes
AS1974
AS1974
AS1975
AS1975
AS1974-T
AS1975
Tape and Reel
Tubes
AS1975-T
Tape and Reel
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Revision 1.02
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AS1970
Data Sheet
Copyrights
Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe.
Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, trans-
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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