參數(shù)資料
型號： MAX9032AKA-T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 運(yùn)動(dòng)控制電子
英文描述： Circular Connector; No. of Contacts:26; Series:MS27474; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:16-26 RoHS Compliant: No
中文描述： DUAL COMPARATOR, 5000 uV OFFSET-MAX, PDSO8
封裝： SOT-23, 8 PIN
文件頁數(shù)： 7/11頁
文件大?。?/td> 344K
代理商： MAX9032AKA-T
1) Find the trip points of the comparator using these
formulas:
V
TH
= V
REF
+[((V
DD
- V
REF
)R2) / (R1 + R2)
V
TL
= V
REF
(1 - (R2 / (R1 + R2))]
where V
TH
is the threshold voltage at which the com-
parator switches its output from high to low as V
IN
rises above the trip point. V
TL
is the threshold volt-
age at which the comparator switches its output from
low to high as V
IN
drops below the trip point.
2) The hysteresis band will be:
V
HYS
= V
TH
- V
TL
= V
DD
(R2 / (R1 + R2))
3) In this example, let V
DD
= +5V and V
REF
= +2.5V.
V
TH
= 2.5V + 2.5(R2 / (R1 + R2))V
and
V
TL
= 2.5[1 - (R2 / (R1 + R2))]
4) Select R2. In this example, we will choose 1k
.
5) Select V
HYS
. In this example, we will choose 50mV.
6) Solve for R1.
V
HYS
= V
DD
(R2 / (R1 + R2))
0.050V = 5(1000
/(R1 + 1000
)) V
where R1
≈
100k
, V
TH
= 2.525V, and V
TL
= 2.475V.
The above-described design procedure assumes rail-
to-rail output swing. If the output is significantly loaded,
the results should be corrected.
Board Layout and Bypassing
Use 100nF bypass as a starting point. 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-.
Biasing for Data Recovery
Digital data is often embedded into a bandwidth and
amplitude-limited analog path. Recovering the data can
be difficult. Figure 2 compares the input signal to a
time-averaged version of itself. This self-biases the
threshold to the average input voltage for optimal noise
margin. Even severe phase distortion is eliminated from
the digital output signal. Be sure to choose R1 and C1
so that:
CAR
>> 1 / (2
π
R1C1)
where
CAR
is the fundamental carrier frequency of the
digital data stream.
M
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
_______________________________________________________________________________________
7
MAX9031
OUT
IN+
IN-
R2
R1
V
IN
V
REF
V
DD
V
SS
V
DD
Figure 1. Additional Hysteresis
MAX9031
OUT
IN+
IN-
10k
0.1
μ
F
V
DD
V
IN
V
SS
V
DD
Figure 2. Time Averaging of the Input Signal for Data Recovery
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9032ASA 功能描述:校驗(yàn)器 IC Dual 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
MAX9032ASA/V+ 功能描述:校驗(yàn)器 IC Low-Cost Ultra-Small Single/Dual/Quad Single-Supply Comparators 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
MAX9032ASA/V+T 功能描述:校驗(yàn)器 IC Low-Cost Ultra-Small Single/Dual/Quad Single-Supply Comparators 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
MAX9032ASA+ 功能描述:校驗(yàn)器 IC Dual 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
MAX9032ASA+T 功能描述:校驗(yàn)器 IC Dual 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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