超低功耗,低失真 Ultralow Power, Low Distortion
GENERAL DESCRIPTION
The ADA4940-1/ADA4940-2 are low noise, low distortion fully differential amplifiers with very low power consumption. They are an ideal choice for driving low power, high resolution, high performance SAR and sigma-delta Σ-Δ analog-to-digital converters ADCs with resolutions up to 16 bits from dc to 1 MHz on only 1.25 mA of quiescent current. The adjustable level of the output common-mode voltage allows the ADA4940-1/ADA4940-2 to match the input common-mode voltage of multiple ADCs. The internal common-mode feedback loop provides exceptional output balance, as well as suppression of even-order harmonic distortion products.
FEATURES
Small signal bandwidth: 260 MHz
Ultralow power 1.25mA
Extremely low harmonic distortion
−122 dB THD at 50 kHz
−96 dB THD at 1 MHz
Low input voltage noise: 3.9 nV/√Hz
0.35 mV maximum offset voltage
Balanced outputs
Settling time to 0.1%: 34 ns
Rail-to-rail output: −VS + 0.1 V to +VS − 0.1 V
Adjustable output common-mode voltage
Flexible power supplies: 3 V to 7 V LFCSP
Disable pin to reduce power consumption
ADA4940-1 is available in LFCSP and SOIC packages
输出电流 46mA @5V
供电电流 1.25 mA
电路数 2
通道数 2
带宽 260 MHz
输入补偿电压 60 µV
输入偏置电流 1.1 µA
工作温度Max 125 ℃
工作温度Min -40 ℃
3dB带宽 260 MHz
共模抑制比Min 85dB ~ 95dB
电源电压Max 7V ~ 10V
安装方式 Surface Mount
引脚数 24
封装 LFCSP-24
长度 4 mm
宽度 4 mm
高度 0.83 mm
封装 LFCSP-24
工作温度 -40℃ ~ 125℃
产品生命周期 Active
包装方式 Tape & Reel TR
制造应用 Healthcare, Life Sciences & Medical Instrumentation
RoHS标准 RoHS Compliant
含铅标准 Contains Lead
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
ADA4940-2ACPZ-RL ADI 亚德诺 | 当前型号 | 当前型号 |
ADA4940-2ACPZ-R7 亚德诺 | 类似代替 | ADA4940-2ACPZ-RL和ADA4940-2ACPZ-R7的区别 |
ADA4940-2ACPZ-R2 亚德诺 | 功能相似 | ADA4940-2ACPZ-RL和ADA4940-2ACPZ-R2的区别 |