Digitally Adjustable LCD Bias Supply

General Description The MAX749 generates negative LCD-bias contrast voltages from 2V to 6V inputs. Full-scale output voltage can be scaled to -100V or greater, and is digitally adjustable in 64 equal steps by an internal digital-to-analog converter (DAC). Only seven small surfacemount components

文件：105.77 Kbytes 页数：12 Pages

Maxim

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数字调节LCD偏置电源

MAX749在2V至6V输入范围内产生负LCD偏置对比电压。满量程输出电压可调节至-100V或更高，并可通过内部数模转换器(DAC)以64个相等步进进行数字调节。只需要七个小型表面贴装元件即可构建完整的电源。也可以使用PWM信号或电位计来调节输出电压。\n\n 独特的限流控制方案降低了电源电流并有效提高了效率，同时高开关频率（高达500kHz）有效减小了外部元件的尺寸。静态电流最大值仅为60µA，并在关断模式下降至15µA以下。关断时，MAX749保留电压设定点，简化了软件控制。MAX749驱动外部P沟道MOSFET或PNP晶体管。 • 输入电压范围：+2.0V至+6.0V\n\n• 灵活控制输出电压：\n• 数字控制\n\n• 电位器调整\n\n• 脉宽调制控制\n\n\n\n\n• 输出电压范围由一个电阻设置\n\n• 低静态电流：60µA（最大值）\n\n• 关断模式下15µA（最大值）\n\n• 小尺寸，8引脚SO和塑料DIP封装;

ADI

亚德诺

Dual Universal Switched-Capacitor Filters

General Description The MAX7490/MAX7491 consist of two identical low power, low-voltage, wide dynamic range, rail-to-rail, 2nd-order switched-capacitor building blocks. Each of the two filter sections, together with two to four external resistors, can generate all standard 2nd-order functions: ba

文件：343.78 Kbytes 页数：18 Pages

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Dual Universal Switched-Capacitor Filters

General Description The MAX7490/MAX7491 consist of two identical low power, low-voltage, wide dynamic range, rail-to-rail, 2nd-order switched-capacitor building blocks. Each of the two filter sections, together with two to four external resistors, can generate all standard 2nd-order functions: ba

文件：360.88 Kbytes 页数：18 Pages

Maxim

美信

Dual Universal Switched-Capacitor Filters

General Description The MAX7490/MAX7491 consist of two identical low power, low-voltage, wide dynamic range, rail-to-rail, 2nd-order switched-capacitor building blocks. Each of the two filter sections, together with two to four external resistors, can generate all standard 2nd-order functions: ba

文件：360.88 Kbytes 页数：18 Pages

Maxim

美信

Dual Universal Switched-Capacitor Filters

General Description The MAX7490/MAX7491 consist of two identical low power, low-voltage, wide dynamic range, rail-to-rail, 2nd-order switched-capacitor building blocks. Each of the two filter sections, together with two to four external resistors, can generate all standard 2nd-order functions: ba

文件：343.78 Kbytes 页数：18 Pages

Maxim

美信

Dual Universal Switched-Capacitor Filters

General Description The MAX7490/MAX7491 consist of two identical low power, low-voltage, wide dynamic range, rail-to-rail, 2nd-order switched-capacitor building blocks. Each of the two filter sections, together with two to four external resistors, can generate all standard 2nd-order functions: ba

文件：360.88 Kbytes 页数：18 Pages

Maxim

美信

Dual Universal Switched-Capacitor Filters

General Description The MAX7490/MAX7491 consist of two identical low power, low-voltage, wide dynamic range, rail-to-rail, 2nd-order switched-capacitor building blocks. Each of the two filter sections, together with two to four external resistors, can generate all standard 2nd-order functions: ba

文件：343.78 Kbytes 页数：18 Pages

Maxim

美信

Dual Universal Switched-Capacitor Filters

General Description The MAX7490/MAX7491 consist of two identical low power, low-voltage, wide dynamic range, rail-to-rail, 2nd-order switched-capacitor building blocks. Each of the two filter sections, together with two to four external resistors, can generate all standard 2nd-order functions: ba

文件：360.88 Kbytes 页数：18 Pages

Maxim

美信

Dual Universal Switched-Capacitor Filters

General Description The MAX7490/MAX7491 consist of two identical low power, low-voltage, wide dynamic range, rail-to-rail, 2nd-order switched-capacitor building blocks. Each of the two filter sections, together with two to four external resistors, can generate all standard 2nd-order functions: ba

文件：343.78 Kbytes 页数：18 Pages

Maxim

美信