ADA400A低压差分探头

特性和优点

• 有源差分前置放大器

• 10 μV/div 的灵敏度

• 通常 100 dB CMRR 直流到 10 kHz

• 探头电源与 TEKPROBE™ BNC 集成

应用

• 机械分析

• 音频设计

• 生物医学研究（未取得接触患者资格）

• 医疗设备（未取得接触患者资格）

ADA400A

通过 ADA400A 差分前置放大器，可以用示波器直接测量幅度非常低的未接地电压和信号。两个输入的高阻抗使得无需在 DUT 中添加额外的接地点，从而避免了循环电流对测量或电路造成影响。

高增益和的共模抑制使得即使在高噪声环境下，也能提供低至 5 μV 的有用电压测量。可选的带宽限制减少了数字逻辑、开关电源和线路频率源的常模噪声。可调差分偏置使用户可以在测试设置中对桥接平衡和电流电势进行归零。可在两个增益范围内选择“无限阻抗"模式，从而实现高源阻抗信号的精确测量。

ADA400A 直接由 TDS400、TDS500、TDS600、TDS700、TDS5000、TDS7000 (TEKPROBE)、TDS7000 (TekConnect) w/ TCA-1MEG 系列示波器供电。还可由 1103 探头电源供电。

Features and benefits

Active differential preamplifier

10 V/div sensitivity

Usually 100 dB CMRR dc to 10 kHz

Probe power with TEKPROBE ™ BNC integration

application

Mechanical analysis

Audio design

Biomedical research (not eligible for contact)

Medical equipment (not qualified for contact with patients)

ADA400A

With the ADA400A differential preamplifier, an oscilloscope can be used to directly measure very low ungrounded voltages and signals. The high impedance of the two inputs eliminates the need to add additional points to the DUT, thus avoiding the impact of circulating current on the measurement or circuit.

High gain and very high common mode rejection provide useful voltage measurements as low as 5 V even in high noise environments. Optional bandwidth limits reduce the norm noise of digital logic, switching power supplies, and line frequency sources. Adjustable differential bias allows the user to zero out the bridge balance and current potential in the test setup. The "infinite impedance" mode can be selected in two maximum gain ranges to enable accurate measurement of high source impedance signals.

ADA400A is directly powered by TDS400, TDS500, TDS600, TDS700, TDS5000, TDS7000 (TEKPROBE), TDS7000 (TekConnect) w/ tca-1meg series oscilloscopes. It can also be supplied by 1103 probe power supply.