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Tiny isolated voltage/current detectors packaged in smaller stretched SO-8

San Jose, Calif.—Avago Technologies announced two new miniature voltage/current threshold detection optocouplers for use in a wide range of industrial control applications.

The ACPL-K370/K376 optocouplers are designed to detect AC/DC sources and convert the voltage to a logic interface across an optical coupling barrier to provide safe isolation in electronically noisy environments found in industrial applications. Applications include limit switch sensors, low voltage detectors, relay contact monitors, relay coil voltage monitors, and current sensors.

The ACPL-K370/K376 series uses threshold sensing input buffer ICs, which permit control of threshold levels over a wide range of input voltages up to 1140 Vpeak, with a single external resistor.

Key features of the optocoupler series include a smaller stretched SO-8 (SSO-8) package which meets 8mm clearance and creepage requirements, and requires 30 percent less printed circuit board space compared to dual-inline packages (DIP-8). Additionally, the input buffer of these optocouplers offer several key features to enhance threshold sensing such as hysteresis for extra noise and switching immunity, a diode bridge for easy use with AC input signals, and internal clamping diodes to protect the buffer and light emitting diode (LED) from a wide range of over-voltage and over-current transients.

With the addition of the ACPL-K370/K376 series, Avago can offer another SSO-8 package option in addition to existing DIP packages to provide customers with more optocoupler options for higher voltage industrial applications. The ACPL-K376 is a low-current version of the ACPL-K370. To obtain lower current operation, the ACPL-K376 uses a high-efficiency aluminum gallium arsenide (AIGaAs) LED which provides higher light output at lower drive currents.

Additional features include ±5 percent voltage detection accuracy; user configurable single/dual detection levels; built-in hysteresis for improved noise immunity; 1.32 mA very low threshold current (ACPL-K376); logic compatible output; 2 V to 18 V wide output supply voltage; and an operating temperature range of -40 to +105°C.

Pricing: Starts at $1.80 and $3.25 each for the ACPL-K370 and ACPL-K376, respectively in minimum quantities of 10,000.
Availability: Now.
Datasheet: click here.

Avago Technologies, www.avagotech.com

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