Quad-Channel Voltage/Current DAC can drive over 200 V.
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Press Release Summary:
Using high-voltage silicon process, HVDAC 200 is based on 9-bit current DAC architecture and operates in current or voltage mode. Output range is controlled by reference input, and each channel includes 5-bit output offset adjustment and current limitation circuit. Overall output range is adjustable from 20-200 V, and communication is executed serially via SPI interface with signal retransmission feature. Integral temperature sensor protects against overheating.
Original Press Release:
Goal Semiconductor Introduces a High-Voltage, Quad, 9-bit Voltage/Current DAC
New device can drive over 200V
Montreal, Canada, December 15, 2004 - Goal Semiconductor today launched the HVDAC 200 - a High Voltage, 4-Channel, 9-bit, serially configurable Voltage/Current D/A Converter. Using an advanced high voltage silicon process, the HVDAC is capable of output in excess of 200V.
The HVDAC targets a wide range of cutting edge applications in the industrial, telecommunications, automotive, medical and consumer market segments that require high voltage control. These include MEMs drivers, variable optical attenuators (VOA), industrial printers, level translation, optical controllers, fiber optic based applications, piezoelectric transducer drivers, HV bias generation and other applications where a programmable high voltage or current source is needed.
Technical description
Based on a 9-bit current DAC architecture, the HVDAC can operate in either current or voltage mode. The output range of the DAC outputs is controlled by a low voltage reference input and each channel includes a 5-bit output offset adjustment. The output range of the HVDAC can be adjusted from 20V to 200V.
The HVDAC has two maximum output currents: 500µA and 5mA. A 600K Ohms resistor is integrated at each channel output to provide voltage output range. Channels also include an over-current limit protection feature and the HVDAC incorporates a temperature sensor that can monitor device temperature and engage shutdown in case of overheating.
Communication with the HVDAC is executed serially via an SPI interface that includes a signal retransmission feature so that users can daisy chain multiple devices on a single SPI bus. The device also includes a hardware reset that clears the internal registers.
Benefits of using the HVDAC 200
The sophisticated integration of digital and high voltage control circuitry on a single chip means the HVDAC 200 drastically reduces the number of components required for high voltage control applications, allowing for more compact system designs.
By incorporating a current limitation circuit on each channel as well as a temperature sensor, the device simplifies system condition monitoring and improves reliability. In addition, multiple device usage on a single communication interface permits further system integration and increases flexibility: The daisy-chainable SPI allows the HVDAC to interface with a microcontroller directly and permits the networking of multiple HVDACs on the same system.
The DAC offset output can be calibrated to suit specific application needs by using the 5-bit offset control on each DAC output.
About Goal Semiconductor
Goal Semiconductor is a privately held, fabless semiconductor company that supplies mixed-signal integrated circuits for the embedded data acquisition market. Goal's products are sold worldwide by our highly technical network of manufacturers' representatives and distributors. Founded in 1992, the company is headquartered in Montreal, Canada.
The HVDAC 200 is currently sampling and volume production is scheduled for Q1 '05.
Volume pricing for the HVDAC 200 is below US $2.00
Sales Contact:
Rose-Marie Macinati
Sales Coordinator
514-871-2447, ext. 105
1-800-943-GOAL (4625)
