ADA4940-2

Ultralow Power, Low Distortion

GENERALDESCRIPTION TheADA4940-1/ADA4940-2arelownoise,lowdistortionfullydifferentialamplifierswithverylowpowerconsumption.Theyareanidealchoicefordrivinglowpower,highresolution,highperformanceSARandsigma-delta(Σ-Δ)analog-to-digitalconverters(ADCs)withresolutio

ADA4940-2

Precision, Low Power Differential Amplifier/ADC Driver Family

FEATURES APPLICATIONS nnAvailablewithUserSettableGainorFixed-Gain of0.5V/V,1V/V,or2V/V nn2.9nV/√HzInput-ReferredNoise nn2mAMaximumSupplyCurrent nn45ppmMaxGainError nn0.5ppm/°CMaxGainErrorDrift nn94dBMinCMRR nn100μVMaxOffsetVoltage nn50nAMaxInputOffse

ADA4940-2

超低功耗、低失真ADC驱动器; • 小信号带宽：260 MHz\n\n• 超低功耗：1.25mA\n\n• 极低谐波失真\n• -122 dB THD (50 kHz)\n\n• -96 dB THD (1 MHz)\n\n\n\n\n• 低输入电压噪声：3.9 nV/√Hz\n\n• 失调电压：0.35 mV（最大值）\n\n• 平衡输出\n\n• 0.1%建立时间：34 ns\n\n• 轨到轨输出：−VS + 0.1 V至+VS − 0.1 V\n\n• 可调输出共模电压\n\n• 灵活的电源：3 V至7 V (LFCSP)\n\n• 禁用引脚用于降低功耗;

ADA4940-1/ADA4940-2是低噪声、低失真、超低功耗的差分放大器，非常适合驱动分辨率最高为18位、DC至1 MHz的低功耗、高分辨率、高性能SAR型和Σ-Δ型模数转换器(ADC)，静态电流仅1.25 mA。可调输出共模电平使ADA4940-1/ADA4940-2能够与多个ADC的输入共模电压相匹配。内部共模反馈环路可以提供出色的输出平衡，并能抑制偶数阶谐波失真产物。\n\n 对于ADA4940-1/ADA4940-2，利用由4个电阻组成的简单外部反馈网络便可轻松实现差分增益配置，反馈网络决定放大器的闭环增益。ADA4940-1/ADA4940-2采用ADI公司的互补双极性工艺制造，可实现极低的失真水平，输入电压噪声仅为3.9 nV/√Hz。低直流失调和出色的动态性能使得ADA4940-1/ADA4940-2特别适合各种数据采集与信号处理应用。\n\n ADA4940-1采用3 mm × 3 mm、16引脚无铅LFCSP封装。ADA4940-2采用4 mm × 4 mm、24引脚无铅LFCSP封装。引脚排列经过优化，有助于印刷电路板(PCB)布局布线，并且使失真最小。ADA4940-1和ADA4940-2的额定工作温度范围为−40°C至+125°C。\n\n

ADA4940-2

Matched Resistor Network for Precision Amplifiers

ADA4940-2ACP-EBZ

Ultralow Power, Low Distortion

GENERALDESCRIPTION TheADA4940-1/ADA4940-2arelownoise,lowdistortionfullydifferentialamplifierswithverylowpowerconsumption.Theyareanidealchoicefordrivinglowpower,highresolution,highperformanceSARandsigma-delta(Σ-Δ)analog-to-digitalconverters(ADCs)withresolutio

ADA4940-2ACPZ-R2

Ultralow Power, Low Distortion

GENERALDESCRIPTION TheADA4940-1/ADA4940-2arelownoise,lowdistortionfullydifferentialamplifierswithverylowpowerconsumption.Theyareanidealchoicefordrivinglowpower,highresolution,highperformanceSARandsigma-delta(Σ-Δ)analog-to-digitalconverters(ADCs)withresolutio

ADA4940-2ACPZ-R7

Ultralow Power, Low Distortion

GENERALDESCRIPTION TheADA4940-1/ADA4940-2arelownoise,lowdistortionfullydifferentialamplifierswithverylowpowerconsumption.Theyareanidealchoicefordrivinglowpower,highresolution,highperformanceSARandsigma-delta(Σ-Δ)analog-to-digitalconverters(ADCs)withresolutio

ADA4940-2ACPZ-RL

Ultralow Power, Low Distortion

GENERALDESCRIPTION TheADA4940-1/ADA4940-2arelownoise,lowdistortionfullydifferentialamplifierswithverylowpowerconsumption.Theyareanidealchoicefordrivinglowpower,highresolution,highperformanceSARandsigma-delta(Σ-Δ)analog-to-digitalconverters(ADCs)withresolutio

ADA4940-2ACPZ-R2

Ultralow Power, Low Distortion, Fully Differential ADC Drivers

ADA4940-2ACPZ-R2

Ultralow Power, Low Distortion, Fully Differential ADC Drivers