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参数资料
| 型号： | LMX339ASD+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/9页 |
| 文件大小： | 0K |
| 描述： | IC COMPARATOR GP QUAD 14-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 通用 |
| 元件数： | 4 |
| 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）： | 73mA @ 5V |
| 电流 - 静态（最大值）： | 300µA |
| CMRR, PSRR（标准）： | 70dB PSRR |
| 传输延迟（最大）： | 600ns |
| 磁滞： | 2mV |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 安装类型： | 表面贴装 |
| 包装： | 管件 |
| 产品目录页面： | 1385 (CN2011-ZH PDF) |
LMX331/LMX393/LMX339
General-Purpose, Low-Voltage,
Single/Dual/Quad, Tiny-Pack Comparators
_______________________________________________________________________________________
7
Detailed Description
The LMX331/LMX393/LMX339 are single/dual/quad,
low-cost, general-purpose comparators. They have a
single-supply operating voltage of 1.8V to 5V. The com-
mon-mode input range extends from -0.1V below the
negative supply to within 0.7V of the positive supply.
They require approximately 60A per comparator with
a 5V supply and 40A with a 2.7V supply.
The LMX331H/LMX393H/LMX339H have 2mV of hys-
teresis for noise immunity. This significantly reduces the
chance of output oscillations even with slow-moving
input signals. The LMX331/LMX393/LMX339 and
LMX331H/LMX393H/LMX339H are ideal for automotive
applications because they operate from -40
°C to
+125
°C (see Typical Operating Characteristics).
Applications Information
Hysteresis
Many comparators oscillate in the linear region of oper-
ation because of noise or undesired parasitic feed-
back. This tends to occur when the voltage on one
input is equal or very close to the voltage on the other
input. The LMX331H/LMX393H/LMX339H 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 follow-
ing procedure to calculate resistor values:
OUT
IN-
THRESHOLDS
IN+
HYSTERESIS
BAND
VHYST
VTL
VTH
Figure 1. Threshold Hysteresis Band (Not to Scale)
PIN
LMX331
LMX393
LMX339
NAME
FUNCTION
1
—
IN+
Noninverting Input
2
4
12
VSS
Negative Supply (Connect to GND)
3
—
IN-
Inverting Input
4
—
OUT
Comparator Output (Open-Drain)
5
83VDD
Positive Supply
—
1
2
OUTA
Comparator A Output (Open-Drain)
—
7
1
OUTB
Comparator B Output (Open-Drain)
—
2
4
INA-
Comparator A Inverting Input
—
3
5
INA+
Comparator A Noninverting Input
—
5
7
INB+
Comparator B Noninverting Input
—
6
INB-
Comparator B Inverting Input
—
8
INC-
Comparator C Inverting Input
—
9
INC+
Comparator C Noninverting Input
—
10
IND-
Comparator D Inverting Input
—
11
IND+
Comparator D Noninverting Input
—
13
OUTD
Comparator D Output (Open-Drain)
—
14
OUTC
Comparator C Output (Open-Drain)
Pin Description
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LMX339ASD+ | 功能描述:校验器 IC Low-Voltage Quad TinyPack 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 |
| LMX339ASD+T | 功能描述:校验器 IC Low-Voltage Quad TinyPack 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 |
| LMX339ASD-T | 功能描述:校验器 IC Low-Voltage Quad TinyPack 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 |
| LMX339AUD | 功能描述:校验器 IC Low-Voltage Quad TinyPack 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 |
| LMX339AUD+ | 功能描述:校验器 IC Low-Voltage Quad TinyPack 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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