AD AD8044是一款四核低功耗、電壓反饋型、高速放大器,設(shè)計(jì)采用+3 V、+5 V或±5 V電源供電。它具有單電源供電能力,輸入電壓范圍是從負(fù)供電軌以下200 mV至正供電軌1 V范圍以內(nèi)。
輸出電壓擺幅可以擴(kuò)展至各供電軌25 mV以內(nèi),以提供最大的輸出動(dòng)態(tài)范圍。此外,其0.1 dB增益平坦度為12 MHz,采用+5 V單電源時(shí)的差分增益和相位誤差分別為0.04%和0.22 °。這使得AD8042特別適合用于視頻電子設(shè)備,如相機(jī)、視頻切換器或任何高速便攜式設(shè)備。低失真和快速建立特性使它能理想地用于有源濾波器應(yīng)用。
AD8044提供最大13.1 mA的低電源電流,可以采用+3.3 V單電源供電。這些特性極為適合對(duì)尺寸和功耗有嚴(yán)格要求的便攜式和電池供電應(yīng)用。
采用+5 V單電源時(shí),AD8044具有150 MHz的寬帶寬和170 V/µs的壓擺率,因此它也能用于需要最高±6 V雙電源或+3 V至+12 V單電源的許多通用高速應(yīng)用。AD8044提供14引腳塑料DIP和SOIC兩種封裝。
特點(diǎn)和優(yōu)勢
額定電源電壓:+3 V、+5 V和±5 V
輸出擺幅擴(kuò)展至任一供電軌25 mV范圍以內(nèi)
輸入電壓范圍擴(kuò)展至地電壓以下200 mV
輸入超過電源電壓1 V不會(huì)反相
低功耗:每放大器2.75 mA
高速及快速建立(5 V)
–3 dB帶寬:150 MHz (G = +1)
壓擺率:170 V/µs
0.1%建立時(shí)間:40 ns
良好的視頻特性 (RL = 150 Ω,
G = +2)
0.1 dB增益平坦度: 12 MHz
差分增益誤差:0.06%
差分相位誤差:0.15 °
低失真
-68 dBc(總諧波,5 MHz)
出色的負(fù)載驅(qū)動(dòng)能力
從供電軌驅(qū)動(dòng)30 mA 0.5 V
AD8044 引腳配置框圖
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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