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| 型号： | MAX9092AUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/11页 |
| 文件大小： | 0K |
| 描述： | IC COMPARATOR GP DUAL 8UMAX |
| 标准包装： | 2,500 |
| 类型： | 通用 |
| 元件数： | 2 |
| 输出类型： | 开路漏极 |
| 电压 - 电源，单路/双路(±)： | 1.8 V ~ 5.5 V |
| 电压 - 输入偏移（最小值）： | 7mV @ 5V |
| 电流 - 输入偏压（最小值）： | 0.25µA @ 5V |
| 电流 - 输出（标准）： | 35mA @ 5V |
| 电流 - 静态（最大值）： | 200µA |
| CMRR, PSRR（标准）： | 90dB PSRR |
| 传输延迟（最大）： | 110ns |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 安装类型： | 表面贴装 |
| 包装： | 带卷 (TR) |
9
Maxim Integrated
MAX9092/MAX9093/MAX9094/MAX9095
General-Purpose, Low-Voltage,
Dual/Quad, Tiny Pack Comparators
Detailed Description
The MAX9092/MAX9093/MAX9094/MAX9095 are low-
cost, general-purpose comparators that have a single-
supply +1.8V to +5V operating voltage range. The
common-mode input range extends from -0.1V below the
negative supply to within +0.8V of the positive supply.
They require approximately 65FA per comparator with a
5V supply and 50FA with a 2.7V supply.
The MAX9093/MAX9095 have 2mV of hysteresis for noise
immunity. This significantly reduces the chance of output
oscillations even with slow moving input signals. The ICs
are ideal for automotive applications because they oper-
ate from -40NC to +125NC. See the Typical Operating
Applications Information
Hysteresis
Many comparators oscillate in the linear region of opera-
tion because of noise or undesired parasitic feedback.
This tends to occur when the voltage on one input is
equal or very close to the voltage on the other input. The
MAX9093/MAX9095 have internal hysteresis to counter
parasitic effects and noise.
The hysteresis in a comparator creates two trip points:
one for the rising input voltage and one for the falling
input voltage (Figure 1). The difference between the trip
points is the hysteresis. When the comparator’s input
voltages are equal, the hysteresis effectively causes
one comparator input to move quickly past the other,
thus taking the input out of the region where oscillation
occurs. This provides clean output transitions for noisy,
slow-moving input signals.
Additional hysteresis can be generated with two resis-
tors using positive feedback (Figure 2). Use the following
procedure to calculate resistor values:
1) Find output voltage when output is high:
VOUT(HIGH) = VDD - ILOAD x RL
2) Find the trip points of the comparator using these
formulas:
VTH = VREF + ((VOUT(HIGH) - VREF)R2)/(R1 + R2)
VTL = VREF(1 - (R2/(R1 + R2)))
where VTH is the threshold voltage at which the compara-
tor switches its output from high to low as VIN rises above
the trip point, and VTL is the threshold voltage at which
the comparator switches its output from low to high as
VIN drops below the trip point.
3) The hysteresis band is:
VHYST = VTH - VTL = VDD(R2/(R1 + R2))
In this example, let VDD = 5V, VREF = 2.5V, ILOAD =
50nA, and RL = 5.1kI.
VOUT(HIGH) = 5.0V - (50 x 10-9 x 5.1 x 103I) ≈ 5.0V
VTH = 2.5 + 2.5(R2/(R1 + R2))
VTL = 2.5(1 - (R2/(R1 + R2)))
Select R2. In this example, choose 1kI.
Select VHYST. In this example, choose 50mV.
Solve for R1.
VHYST = VOUT(HIGH)(R2/(R1 + R2))V
0.050V = 5(1000/(R1 + 1000))V
where R1
≈ 100kI, VTH = 2.525V, and VTL = 2.475V
Figure 1. Threshold Hysteresis Band (Not to Scale)
Figure 2. Adding Hysteresis with External Resistors
IN+
THRESHOLDS
IN-
VHYST
VTL
VTH
HYSTERESIS
BAND
OUT
IN+
OUT
RL
R1
R2
VREF
VIN
VDD
VOUT
VDD
VSS
IN-
MAX9093/MAX9095
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9093 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:General-Purpose, Low-Voltage, Dual/Quad, Tiny Pack Comparators |
| MAX9093AKA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX9093AKA+T | 功能描述:校验器 IC Dual TinyPack Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX9093AUA+ | 功能描述:校验器 IC Dual TinyPack Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX9093AUA+T | 功能描述:校验器 IC Dual TinyPack Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
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