Diodes Incorporated

High-Precision Bidirectional Current Monitors from Diodes Incorporated Enable Accurate Measurement at Low BoM Costs

Diodes Incorporated (Diodes) (Nasdaq: DIOD) today announced a series of bidirectional current monitors based on a high-stability zero-drift architecture. These devices are capable of accurately measuring very low sense voltages across a wide range of common-mode voltages. Key applications include laptop PCs, battery chargers, industrial servos, servers, power supply racks in server farms, and robotic systems.

Consisting of six different variants, the DIODES™ ZXCT199 series of current monitor devices each feature a precision chopper stabilized op-amp for high accuracy operation. Their low offset voltage enables current sensing with maximum drops across shunts as low as 10mV full-scale. This allows high currents to be measured via inexpensive, low-value shunt resistor components.

The ZXCT199 series are voltage output type devices, and are available in three fixed voltage gain options in 50V/V, 100V/V, and 200V/V. These devices can measure voltages across shunts at common-mode voltages from -0.1V to 26V, independent of the supply voltage.

The new current sensors from Diodes have an operational temperature range of -40°C to 125°C, exhibiting minimal gain error across this. For the A and B versions, the maximum gain error over temperature is ±1.0%, while for the C version, it is ±0.8%. Their offset voltage levels are a maximum of ±150μV for the A version, ±100μV for the B version, and an ultra-low ±80μV for the highest precision C version. All variants can be powered via a 2.7V to 26V supply, giving them greater application flexibility. A maximum supply current of just 100μA is drawn.

The ZXCT199A, ZXCT199B and ZXCT199C are available at $0.21, $0.23 and $0.25 respectively in 1000 piece quantities.


About Diodes Incorporated

Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s SmallCap 600 and Russell 3000 Index company, delivers high-quality semiconductor products to the world’s leading companies in the consumer electronics, computing, communications, industrial, and automotive markets. We leverage our expanded product portfolio of discrete, analog, and mixed-signal products and leading-edge packaging technology to meet customers’ needs. Our broad range of application-specific solutions and solutions-focused sales, coupled with worldwide operations of 32 sites, including engineering, testing, manufacturing, and customer service, enables us to be a premier provider for high-volume, high-growth markets. For more information visit www.diodes.com.


The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries.

DIODES™ is a trademark of Diodes Incorporated in the United States and other countries.


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