參數(shù)資料
型號(hào)： LM293D
廠商： NXP SEMICONDUCTORS
元件分類： 比較器
英文描述： Low power dual voltage comparator
中文描述： DUAL COMPARATOR, 9000 uV OFFSET-MAX, 1300 ns RESPONSE TIME, PDSO8
封裝： 3.90 MM, PLASTIC, MS-012, SOT-96-1, SOP-8
文件頁(yè)數(shù)： 5/6頁(yè)
文件大?。?/td> 134K
代理商： LM293D
LM393, LM393A, LM293, LM2903, LM2903V
APPLICATIONS INFORMATION
5
MOTOROLA ANALOG IC DEVICE DATA
These dual comparators feature high gain, wide
bandwidth characteristics. This gives the device oscillation
tendencies if the outputs are capacitively coupled to the
inputs via stray capacitance. This oscillation manifests itself
during output transitions (VOL to VOH). To alleviate this
situation, input resistors <10 k
should be used.
The addition of positive feedback (<10 mV) is also
recommended. It is good design practice to ground all
unused pins.
Differential input voltages may be larger than supply
voltage without damaging the comparator’s inputs. Voltages
more negative than –0.3 V should not be used.
Figure 7. Zero Crossing Detector
(Single Supply)
Figure 8. Zero Crossing Detector
(Split Supply)
Figure 9. Free–Running Square–Wave Oscillator
Figure 10. Time Delay Generator
Figure 11. Comparator with Hysteresis
10
D1 prevents input from going negative by more than 0.6 V.
R1 + R2 = R3
R5
for small error in zero crossing.
R3
≤
Vin
10 k
D1
R1
8.2 k
6.8 k
R2
15 k
R3
+15 V
10 M
R5
220 k
R4
220 k
LM393
Vin(min)
0.4 V peak for 1% phase distortion (
Θ
).
Θ
+VCC
10 k
Vin
–VEE
Vin
Vin(min)
VCC
VO
– VEE
Θ
Θ
LM393
–
LM393
+
51 k
51 k
51 k
RL
10 k
VCC
VCC
VCC
VO
VO
t
0
1.0 M
0.001
μ
F
–
LM393
+
VCC
VCC
VO
Vin
VO
+ Vref
Vref
Vref
0
0
0
VC
tO
t
‘‘ON’’ for t
where:
tO +
t
t = RC n (
Vref
VCC
)
R
RL
VC
C
LM393
+
–
RS
VCC
RL
Vref
R1
R2
RS = R1 | | R2
Vth1 = Vref +
(VCC –Vref) R1
R1 + R2 + RL
Vth2 = Vref –
(Vref –VO Low) R1
R1 + R2
R1
t
–
LM393
+
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM293DE4 功能描述:校驗(yàn)器 IC Dual Differential Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
LM293DG 功能描述:校驗(yàn)器 IC 2-36V Dual -25 to 85 deg C RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
LM293DG 制造商:ON Semiconductor 功能描述:IC PRECISION COMP DUAL 1.3 uS SOIC-8 制造商:ON Semiconductor 功能描述:IC, PRECISION COMP, DUAL, 1.3 uS, SOIC-8
LM293DG4 功能描述:校驗(yàn)器 IC Dual Differential Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
LM293DGKR 功能描述:校驗(yàn)器 IC Dual Differential Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
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