参数资料
型号: MAX9075EUK+T
厂商: Maxim Integrated Products
文件页数: 7/9页
文件大小: 0K
描述: IC COMPARATOR SGL SOT23-5
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
类型: 通用
元件数: 1
输出类型: CMOS,推挽式,满摆幅,TTL
电压 - 电源,单路/双路(±): 2.1 V ~ 5.5 V
电压 - 输入偏移(最小值): 1mV @ 5V
电流 - 输入偏压(最小值): 0.005µA @ 5V
电流 - 静态(最大值): 6.6µA
CMRR, PSRR(标准): 82dB CMRR,77dB PSRR
传输延迟(最大): 580ns
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: 标准包装
产品目录页面: 1391 (CN2011-ZH PDF)
其它名称: MAX9075EUK+TDKR
MAX9075/MAX9077
Low-Cost, Ultra-Small, 3A
Single-Supply Comparators
7
Maxim Integrated
4) Choose the threshold voltage for VIN rising (VTHR). In
this example, choose VTHR = 3V.
5) Calculate R2 as follows:
R2 = 1/{[VTHR/(VREF R1)] - 1/R1 - 1/R3} =
1/{[3 / (1.2 100k
Ω)] - 1/100kΩ - 1/10MΩ} = 67.114kΩ
A 1% preferred value is 64.9k
Ω.
6) Verify the threshold voltages with these formulas:
VIN rising:
VTHR = VREF R1 (1/R1 + 1/R2 + 1/R3)
VIN falling:
VTHF = VTHR - (R1 VCC)/R3
7) Check the error due to input bias current (5nA). If the
error is too large, reduce R3 and recalculate.
VTH = IB (R1 R2 R3)/(R1 + R2 + R3) = 0.2mV
Board Layout and Bypassing
Use 10nF power-supply bypass capacitors. Use 100nF
bypass capacitors when supply impedance is high,
when supply leads are long, or when excessive noise is
expected on the supply lines. Minimize signal trace
lengths to reduce stray capacitance. Minimize the
capacitive coupling between IN- and OUT. For slow-
moving input signals (rise time > 1ms) use a 1nF
capacitor between IN+ and IN-.
Chip Information
PROCESS: BiCMOS
VCC
VIN
VCC
OUT
GND
VREF
R3
R2
R1
MAX9075
MAX9077
Figure 1. Adding Hysteresis
INB-
INB+
INA+
1
+
2
8
7
VCC
OUTB
GND
INA-
OUTA
SOT23-8
TOP VIEW
3
4
6
5
INB-
INB+
GND
1
2
8
7
VCC
OUTB
INA-
INA+
OUTA
MAX/SO
3
4
6
5
MAX9077
+
Pin Configurations (continued)
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相关代理商/技术参数
参数描述
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