- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383535 > MAX9016A (Maxim Integrated Products, Inc.) SOT23, Dual, Precision, 1.8V, Nanopower Comparators With/Without Reference PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX9016A |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | SOT23, Dual, Precision, 1.8V, Nanopower Comparators With/Without Reference |
| 中文描述： | SOT23封裝、雙路、高精度、1.8V、納安級(jí)功耗比較器，帶或不帶基準(zhǔn) |
| 文件頁(yè)數(shù)： | 12/16頁(yè) |
| 文件大?。?/td> | 446K |
| 代理商： | MAX9016A |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
M
Internal Hysteresis
Many comparators oscillate in the linear region of oper-
ation because of noise or undesired parasitic feed-
back. Oscillations can occur when the voltage on one
input is equal or very close to the voltage on the other
input. The MAX9015
–
teresis to counter parasitic effects and noise.
The hysteresis in a comparator creates two trip points:
one for the rising input voltage (V
THR
) and one for the
falling input voltage (V
THF
) (Figure 1). The difference
between the trip points is the hysteresis (V
HB
). When
the comparator
’
s input voltages are equal, the hystere-
sis effectively causes one comparator input to move
quickly past the other, thus taking the input out of the
region where oscillation occurs. Figure 1 illustrates the
case in which the comparator
’
s inverting input has a
fixed voltage applied, and the noninverting input is var-
ied. If the inputs were reversed, the figure would be the
same, except with an inverted output.
Additional Hysteresis
(MAX9015/MAX9017/MAX9019)
(Push-Pull Outputs)
The MAX9015/MAX9017/MAX9019 feature a built-in
4mV hysteresis band (V
HB
). Additional hysteresis can
be generated with three resistors using positive feed-
back (Figure 2). Use the following procedure to calcu-
late resistor values:
1) Select R3. Input bias current at IN_+ is less than
2nA, so the current through R3 should be at least
0.2μA to minimize errors caused by input bias cur-
rent. The current through R3 at the trip point is
(V
REF
- V
OUT
)/R3. Considering the two possible out-
put states in solving for R3 yields two formulas: R3
= V
REF
/IR3 or R3 = (V
CC
- V
REF
)/I
R3
. Use the small-
er of the two resulting resistor values. For example,
when using the MAX9017 (V
REF
= 1.24V) and V
CC
= 5V, and if we choose I
R3
= 0.2μA, then the two
resistor values are 6.2M
and 19M
. Choose a
6.2M
standard value for R3.
2) Choose the hysteresis band required (V
HB
). For this
example, choose 50mV.
3) Calculate R1 according to the following equation:
For this example, insert the values:
4) Choose the trip point for V
IN
rising (V
THR
) such that:
where V
THR
is the trip point for V
IN
rising. This is the
threshold voltage at which the comparator switches
its output from low to high as V
IN
rises above the
trip point. For this example, choose 3V.
5) Calculate R2 as follows:
1
=
For this example, choose a 44.2k
standard value.
R
V X
k
M
k
V
2
1
1 24
( .
62
1
62
1
6 2
.
43 99
.
3 0
.
=
=
)
R
V
V
X R
R
R
THR
REF
2
1
1
1
1
3
V
V
V
V
THR
REF
HB
CC
>
+
1
R
M
mV
V
5
k
1
6.
50
12
=
=
R
R
V
V
HB
CC
1
3
=
SOT23, Dual, Precision, 1.8V, Nanopower
Comparators With/Without Reference
12
______________________________________________________________________________________
THRESHOLDS
OUT
IN+
IN-
V
HB
HYSTERESIS
BAND
V
THF
V
THR
Figure 1. Threshold Hysteresis Band
V
CC
MAX9015
MAX9017
MAX9019
OUT
R3
R1
R2
V
REF
V
EE
V
IN
V
CC
Figure 2. MAX9015/MAX9017/MAX9019 Additional Hysteresis
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX9016AEKA-T | SOT23, Dual, Precision, 1.8V, Nanopower Comparators With/Without Reference |
| MAX9017A | SOT23, Dual, Precision, 1.8V, Nanopower Comparators With/Without Reference |
| MAX9017AEKA-T | SOT23, Dual, Precision, 1.8V, Nanopower Comparators With/Without Reference |
| MAX9017B | SOT23, Dual, Precision, 1.8V, Nanopower Comparators With/Without Reference |
| MAX9017BEKA-T | SOT23, Dual, Precision, 1.8V, Nanopower Comparators With/Without Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9016AEKA | 制造商:Maxim Integrated Products 功能描述:DUAL, PRECISION, 1.8V, NANOPOWER COMPARATOR - Cut Tape Product |
| MAX9016AEKA+ | 制造商:Maxim Integrated Products 功能描述:COMPARATOR 1 R-R O/P 5.5V 8PIN SOT-23 - Rail/Tube |
| MAX9016AEKA+T | 功能描述:校驗(yàn)器 IC Dual Precision 1.8V nPower 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 |
| MAX9016AEKA-T | 功能描述:校驗(yàn)器 IC 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 |
| MAX9016AEUA-T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。