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參數(shù)資料
| 型號： | MAX9075EUK-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | Low-Cost, Ultra-Small, 3レA Single-Supply Comparators |
| 中文描述： | COMPARATOR, 8000 uV OFFSET-MAX, 580 ns RESPONSE TIME, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 108K |
| 代理商： | MAX9075EUK-T |
4) Choose the threshold voltage for V
IN
rising (V
THR
). In
this example, choose V
THR
= 3V.
5) Calculate R2 as follows:
R2 = 1 / {[V
THR
/ (V
REF
·
R1)] - 1/R1 - 1/R3} =
1 / {[3 / (1.2
·
100k)] - 1/100k - 1/10M} = 67.114k
A 1% preferred value is 64.9k
.
6) Verify the threshold voltages with these formulas:
V
IN
rising:
V
THR
= V
REF
·
R1 (1/R1 + 1/R2 + 1/R3)
V
IN
falling:
V
THF
= V
THR
- (R1
·
V
CC
) / R3
7) Check the error due to input bias current (5nA). If the
error is too large, reduce R3 and recalculate.
V
TH
= I
B
(R1
·
R2
·
R3) / (R1 + R2 + R3) = 0.2mV
Board Layout and Bypassing
Use 10nF power-supply bypass capacitors. Use 100nF
bypass capacitors 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. Minimize the
capacitive coupling between IN- and OUT. For slow-
moving input signals (rise time > 1ms) use a 1nF
capacitor between IN+ and IN-.
Chip Information
TRANSISTOR COUNT: 86 (MAX9075)
142 (MAX9077)
M
Low-Cost, Ultra-S mall, 3μA
S ingle-S upply Comparators
_______________________________________________________________________________________
7
V
CC
V
IN
V
CC
OUT
GND
V
REF
R3
R2
R1
MAX9075
MAX9077
Figure 1. Adding Hysteresis
INB-
INB+
INA+
1
2
8
7
V
CC
OUTB
GND
INA-
OUTA
SOT23-8
TOP VIEW
3
4
6
5
INB-
INB+
GND
1
2
8
7
V
CC
OUTB
INA-
INA+
OUTA
SO
3
4
6
5
MAX9077
MAX9077
Pin Configurations (c ont.)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9075EXK | 制造商:Maxim Integrated Products 功能描述:5 PIN COUNT SC70 PACKAGE TYPE - Bulk |
| MAX9075EXK+ | 制造商:Maxim Integrated Products 功能描述:COMPARATOR SGL R-R O/P 5.5V 5PIN SC-70 - Rail/Tube 制造商:Maxim Integrated Products 功能描述:SINGLE-SUPPLY COMPARATORS 制造商:Maxim Integrated Products 功能描述:MAX9075 rail-to-rail comparator, SC70-5 |
| MAX9075EXK+T | 功能描述:校驗器 IC 3uA Single-Supply Comparator RoHS:否 制造商:STMicroelectronics 產品: 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 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MAX9075EXK-T | 功能描述:校驗器 IC 3uA Single-Supply Comparator RoHS:否 制造商:STMicroelectronics 產品: 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 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MAX9077 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Cost, Ultra-Small, 3レA Single-Supply Comparators |
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