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| 型号： | ADCMP371AKS-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC COMPARATOR PUSH-PULL SC70-5 |
| 设计资源： | Logarithmic Audio Volume Control with Glitch Reduction Using AD5292 (CN0120) |
| 标准包装： | 10,000 |
| 类型： | 通用 |
| 元件数： | 1 |
| 输出类型： | 推挽式 |
| 电压 - 电源，单路/双路(±)： | 2.25 V ~ 5.5 V |
| 电压 - 输入偏移（最小值）： | 9mV @ 5.5V |
| 电流 - 输入偏压（最小值）： | 0.05µA @ 5.5V |
| 电流 - 静态（最大值）： | 7µA |
| 传输延迟（最大）： | 5µs |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 6-TSSOP（5 引线），SC-88A，SOT-353 |
| 安装类型： | 表面贴装 |
| 包装： | 带卷 (TR) |
Data Sheet
ADCMP370/ADCMP371
Rev. C | Page 9 of 12
APPLICATIONS
BASIC COMPARATOR
In its most basic configuration, a comparator can be used to
convert an analog input signal to a digital output signal. The
analog signal on IN+ is compared to the voltage on IN, and
the voltage at OUT is either high or low, depending on whether
IN+ is at a higher or lower potential than IN, respectively.
The ADCMP370 and ADCMP371 have different digital output
structures. The ADCMP370 has an open-drain output stage
that requires an external resistor to pull OUT to the logic high
voltage level when the output transistor is switched off. This
voltage level can be as high as 22 V. The same 22 V tolerance
also applies to the inputs of the comparators. The pull-up
resistor should be large enough to avoid excessive power
dissipation but small enough to switch logic levels reasonably
quickly when the comparator output is connected to other
digital circuitry. A suitable value is between 1 kΩ and 10 kΩ.
The ADCMP371 has a push-pull output stage, which has an
internal PMOS pull-up and, therefore, does not require an
external resistor. Faster switching speeds between low and high
rails are possible, but the logic high level is limited to VCC.
ADM331
OUT
V+
VREF
t
VOUT
0V
ADCMP370
VCC
V+
VIN
04745-017
VREF
VIN
Figure 18. Basic Comparator and Input and Output Signals
ADDING HYSTERESIS
To prevent oscillations at the output caused by noise or slowly
moving signals passing the switching threshold, positive feedback
can be used to add hysteresis to the differential input.
For the noninverting configuration, shown in Figure 19,
two resistors are used to create different switching thresholds,
depending on whether the input signal is increasing or
decreasing in magnitude. When the input voltage is increasing,
the threshold is above VREF, and when it is decreasing, the
threshold is below VREF.
The upper input threshold level is given by
R2
R1
V
REF
IN_HI
The lower input threshold level is given by
R2
R1
V
R2
R1
V
CC
REF
IN_LO
The hysteresis is the difference between these voltage levels
R2
R1
V
CC
IN
In the example in Figure 19, Resistor R1 and Resistor R2 are
chosen to give 1 V hysteresis about the reference of 2.5 V, with
VCC = 5 V.
ADM331
ADCMP371
VCC = 5V
R2 = 1M
R1 = 200k
VREF = 2.5V
IN+
IN–
VIN
VOUT
VIN
VIN_LO
= 2V
VIN_HI
= 3V
04745-018
OUT
Figure 19. Noninverting ADCMP371 Comparator Configuration with
Hysteresis
With the inverting configuration, the upper and lower
switching thresholds are
R2
R3
R1
R2
V
CC
IN_HI
||
)
(
)
1
(
)
(
1
R3
R2
R
R2
R3
R1
R3
R
R2
V
CC
IN_HI
R3
R2
R1
R3
R2
V
CC
IN_LO
||
)
3
(
)
(
)
3
(
3
2
R
R2
R1
R2
R
R1
R
V
CC
IN_LO
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADCMP371AKS-REEL7 | 功能描述:IC COMPARATOR PUSH-PULL SC70-5 RoHS:否 类别:集成电路 (IC) >> 线性 - 比较器 系列:- 标准包装:25 系列:- 类型:带电压基准 元件数:4 输出类型:CMOS，开路漏极，TTL 电压 - 电源，单路/双路(±):2 V ~ 11 V，±1 V ~ 5.5 V 电压 - 输入偏移（最小值）:10mV @ 5V 电流 - 输入偏压（最小值）:- 电流 - 输出（标准）:0.015mA @ 5V 电流 - 静态（最大值）:8.5µA CMRR, PSRR（标准）:80dB CMRR，80dB PSRR 传输延迟（最大）:12µs 磁滞:50mV 工作温度:0°C ~ 70°C 封装/外壳:16-DIP（0.300"，7.62mm） 安装类型:通孔 包装:管件 |
| ADCMP371AKS-RL | 制造商:AD 制造商全称:Analog Devices 功能描述:General Purpose Comparators |
| ADCMP371AKSZ | 制造商:Analog Devices 功能描述:COMPARATOR PUSH-PULL SC70-5 制造商:Analog Devices 功能描述:COMPARATOR, PUSH-PULL, SC70-5 制造商:Analog Devices 功能描述:COMPARATOR, PUSH-PULL, SC70-5; Comparator Type:General Purpose; No. of Comparators:1; Supply Voltage Range:2.25V to 5.5V; Amplifier Case Style:SC-70; No. of Pins:5; IC Output Type:Push Pull; Supply Current:4A; Operating Temperature ;RoHS Compliant: Yes |
| ADCMP371AKSZREEL7 | 制造商:Analog Devices 功能描述: |
| ADCMP371AKSZ-REEL7 | 功能描述:IC COMPARATOR PUSH-PULL SC70-5 RoHS:是 类别:集成电路 (IC) >> 线性 - 比较器 系列:- 标准包装:1 系列:- 类型:通用 元件数:1 输出类型:CMOS，开路集电极，TTL 电压 - 电源，单路/双路(±):2.7 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）:84mA @ 5V 电流 - 静态（最大值）:120µA CMRR, PSRR（标准）:- 传输延迟（最大）:600ns 磁滞:- 工作温度:-40°C ~ 85°C 封装/外壳:SC-74A，SOT-753 安装类型:表面贴装 包装:剪切带 (CT) 产品目录页面:1268 (CN2011-ZH PDF) 其它名称:*LMV331M5*LMV331M5/NOPBLMV331M5CT |
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