AD AD8044是一款四核低功耗、电压反馈型、高速放大器,设计采用+3 V、+5 V或±5 V电源供电。它具有单电源供电能力,输入电压范围是从负供电轨以下200 mV至正供电轨1 V范围以内。
输出电压摆幅可以扩展至各供电轨25 mV以内,以提供最大的输出动态范围。此外,其0.1 dB增益平坦度为12 MHz,采用+5 V单电源时的差分增益和相位误差分别为0.04%和0.22 °。这使得AD8042特别适合用于视频电子设备,如相机、视频切换器或任何高速便携式设备。低失真和快速建立特性使它能理想地用于有源滤波器应用。
AD8044提供最大13.1 mA的低电源电流,可以采用+3.3 V单电源供电。这些特性极为适合对尺寸和功耗有严格要求的便携式和电池供电应用。
采用+5 V单电源时,AD8044具有150 MHz的宽带宽和170 V/µs的压摆率,因此它也能用于需要最高±6 V双电源或+3 V至+12 V单电源的许多通用高速应用。AD8044提供14引脚塑料DIP和SOIC两种封装。
特点和优势
额定电源电压:+3 V、+5 V和±5 V
输出摆幅扩展至任一供电轨25 mV范围以内
输入电压范围扩展至地电压以下200 mV
输入超过电源电压1 V不会反相
低功耗:每放大器2.75 mA
高速及快速建立(5 V)
–3 dB带宽:150 MHz (G = +1)
压摆率:170 V/µs
0.1%建立时间:40 ns
良好的视频特性 (RL = 150 Ω,
G = +2)
0.1 dB增益平坦度: 12 MHz
差分增益误差:0.06%
差分相位误差:0.15 °
低失真
-68 dBc(总谐波,5 MHz)
出色的负载驱动能力
从供电轨驱动30 mA 0.5 V
AD8044 引脚配置框图
FEATURES
Single AD8041 and Dual AD8042 Also Available
Fully Specified at +3 V, +5 V, and 5 V Supplies
Output Swings to Within 25 mV of Either Rail
Input Voltage Range Extends 200 mV Below Ground
No Phase Reversal with Inputs 1 V Beyond Supplies
Low Power of 2.75 mA/Amplifier
High Speed and Fast Settling on +5 V
150 MHz –3 dB Bandwidth (G = +1)
170 V/s Slew Rate
40 ns Settling Time to 0.1%
Good Video Specifications (RL = 150 , G = +2)
Gain Flatness of 0.1 dB to 12 MHz
0.06% Differential Gain Error
0.15 Differential Phase Error
Low Distortion
–68 dBc Total Harmonic @ 5 MHz
Outstanding Load Drive Capability
Drives 30 mA 0.5 V from Supply Rails
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