特性和優(yōu)點

• 有源差分前置放大器

• 10 μV/div 的靈敏度

• 通常 100 dB CMRR 直流到 10 kHz

• 探頭電源與 TEKPROBE™ BNC 集成

應用

• 機械分析

• 音頻設計

• 生物醫(yī)學研究（未取得接觸患者資格）

• 醫(yī)療設備（未取得接觸患者資格）

ADA400A

通過 ADA400A 差分前置放大器，可以用示波器直接測量幅度非常低的未接地電壓和信號。兩個輸入的高阻抗使得無需在 DUT 中添加額外的接地點，從而避免了循環(huán)電流對測量或電路造成影響。

高增益和的共模抑制使得即使在高噪聲環(huán)境下，也能提供低至 5 μV 的有用電壓測量?？蛇x的帶寬限制減少了數(shù)字邏輯、開關電源和線路頻率源的常模噪聲?？烧{差分偏置使用戶可以在測試設置中對橋接平衡和電流電勢進行歸零?？稍趦蓚€增益范圍內選擇“無限阻抗"模式，從而實現(xiàn)高源阻抗信號的精確測量。

ADA400A 直接由 TDS400、TDS500、TDS600、TDS700、TDS5000、TDS7000 (TEKPROBE)、TDS7000 (TekConnect) w/ TCA-1MEG 系列示波器供電。還可由 1103 探頭電源供電。

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.