安捷伦光耦HCPL-7840 全新进口原装现货 东康讯达

The HCPL-7840isolation amplifier family was designed for current sensing in electronic motor drive and automotive applicati***. In a typical implementation, motor currents flow through an external resistor and the resulting analog voltage drop is sensed by the HCPL-7840. A differential output voltage is created on the other side of the HCPL-7840 optical isolation barrier. This differential output voltage is proportional to the motor current and can be converted to a single-ended signal by using an op-amp.

Since common-mode voltage swings of several hundred volts in tens of nanoseconds are common in modern switching inverter motor drives, the HCPL-7840 was designed to ignore very high common-mode transient slew rates (of at least 10 kV/ms).

The high CMR capability of the HCPL-7840 isolation amplifier provides the precision and stability needed to accurately monitor motor current in high noise motor control environments, providing for ***oother control (less "torque ripple") in various types of motor control applicati***.

The product can also be used for general analog signal isolation applicati*** requiring high accuracy, stability, and linearity under similarly severe noise conditi***. For general applicati***, we recommend the HCPL-7840 (gain tolerance of /- 5%). The HCPL-7840 utilizes sigma delta (S-D) analog-to-digital converter technology, chopper stabilized amplifiers, and a fully differential circuit topology fabricated using ***ago Technologies's 0.8 mm CMOS IC process.

Together, these features deliver unequaled isolation-mode noise rejection, as well as excellent offset and gain accuracy and stability over time and temperature. This performance is delivered in a compact, auto-insertable, industry standard 8-pin DIP package that meets worldwide regulatory safety standa***. (A gull-wing surface mount option #300 is also ***ailable).