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參數(shù)資料
| 型號(hào)： | MAX9016AEKA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 6/17頁(yè) |
| 文件大小： | 0K |
| 描述： | IC COMPARATOR SGL SOT23-8 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | Beyond-the-Rails™ |
| 類型： | 帶電壓基準(zhǔn) |
| 元件數(shù)： | 1 |
| 輸出類型： | CMOS，開路漏極，滿擺幅 |
| 電壓 - 電源，單路/雙路(±)： | 1.8 V ~ 5.5 V |
| 電壓 - 輸入偏移（最小值）： | 5mV @ 5V |
| 電流 - 輸入偏壓（最小值）： | 0.001µA @ 5V |
| 電流 - 輸出（標(biāo)準(zhǔn)）： | 50mA |
| 電流 - 靜態(tài)（最大值）： | 2µA |
| CMRR, PSRR（標(biāo)準(zhǔn)）： | 80dB PSRR |
| 傳輸延遲（最大）： | 31µs |
| 磁滯： | 4mV |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | SOT-23-8 |
| 安裝類型： | 表面貼裝 |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | MAX9016AEKA+TDKR |
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MAX9015–MAX9020
SOT23, Dual, Precision, 1.8V, Nanopower
Comparators With/Without Reference
14
Maxim Integrated
Board Layout and Bypassing
The MAX9015–MAX9020 ultra-low supply current typical-
ly requires no power-supply bypass capacitors. However,
when the supply has high output impedance, long lead
lengths or excessive noise, or fast transients, bypass VCC
to VEE with a 0.1F capacitor placed as close to the VCC
pin as possible. Minimize signal trace lengths to reduce
stray capacitance. Use a ground plane and surface-
mount components for best performance. If REF is
decoupled, use a low-leakage ceramic capacitor. High
traces should not be routed in the vicinity of or below
MAX9018. There is a chance of voltage reference being
overloaded resulting in drop of output voltage.
Window Detector
The MAX9018 is ideal for window detectors (undervolt-
age/overvoltage detectors). Figure 4 shows a window
detector circuit for a single-cell Li+ battery with a 2.9V end-
of-life charge, a peak charge of 4.2V, and a nominal value
of 3.6V. Choose different thresholds by changing the val-
ues of R1, R2, and R3. OUTA provides an active-low
undervoltage indication, and OUTB provides an active-low
overvoltage indication. ANDing the two open-drain outputs
provides an active-high, power-good signal.
The design procedure is as follows:
1) Select R1. The input bias current into INB- is nor-
mally less than 2nA, so the current through R1
should exceed 100nA for the thresholds to be accu-
rate. In this example, choose R1 = 1.24M
Ω
(1.24V/1A).
2) Calculate R2 + R3. The overvoltage threshold
should be 4.2V when VIN is rising. The design
equation is as follows:
=2.95M
Ω
3) Calculate R2. The undervoltage threshold should
be 2.9V when VIN is falling. The design equation is
as follows:
= 546k
Ω
For this example, choose a 499k
Ω standard value 1%
resistor.
4) Calculate R3:
R3 = (R2 + R3) - R2
= 2.95M
Ω - 546kΩ
= 240M
Ω
5) Verify the resistor values. The equations are as fol-
lows, evaluated for the above example:
Overvoltage threshold:
Undervoltage threshold:
where the internal hysteresis band, VHB, is 4mV.
Zero-Crossing Detector
Figure 5 shows a zero-crossing detector application.
The MAX9015/MAX9016/MAX9019/MAX9020s’ invert-
ing input is connected to ground, and its noninverting
input is connected to a 100mVP-P signal source. As the
signal at the noninverting input crosses zero, the com-
parator’s output changes state.
VV
V
x
RR
R
RR
V
UTH
REF
HB
=
++
+
=
()
.
12
3
12
297
VV
V
x
RR
R
V
OTH
REF
HB
=+
++
=
()
.
12
3
1
420
=Ω +
Ω
Ω
(.
.
)
(.
)
.
124
295
1 236
29
124
MM
x
M
RR
R
x
VV
V
R
REF
HB
UTH
21
2
3
1
=+
+
()
=Ω
+
124
42
1 24
0 004
1
.
..
Mx
V
RR
R x
V
VV
OTH
REF
HB
23
1
+=
+
MAX9018
VCC
INA+
OUTA
VCC
VEE
REF/INA-
REF
1.24V
INB+
INB-
OUTB
VEE
VIN V
OTH = 4.2V
VUTH = 2.9V
R3
R2
R1
5V
POWER-
GOOD
Figure 4. Window Detector Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9016AEUA-T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| MAX9017 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:SOT23, Dual, Precision, 1.8V, Nanopower Comparators With/Without Reference |
| MAX9017A | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:SOT23, Dual, Precision, 1.8V, Nanopower Comparators With/Without Reference |
| MAX9017AEKA | 制造商:Maxim Integrated Products 功能描述:SOT23, DUAL, PRECISION, 1.8V, NANOPOWER COMPARATOR - Rail/Tube |
| MAX9017AEKA/V+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 |
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