DACs for medical equipment
06 September 2011
TI’s family of dual 16, 14 and 12-bit DACs provides highest precision, lowest power consumption.
The DAC8562 family delivers 25% better integral non-linearity (INL) and 60% lower offset error compared to similar devices. The DACs also provide best-in-class power consumption and are ultra-small, making them suitable for space and power-constrained systems, such as wireless base stations, programmable logic control (PLC) analogue output modules, motor control, precision instrumentation and portable medical equipment.
Key features and benefits include:
• Best-in-class precision with 0.1 nV-sec glitch energy, a maximum offset error of
4 mV, a maximum INL of 0.75 LSB at 12-bits and a maximum reference drift of
10 ppm/°C improves system accuracy
• Lowest power consumption in its class, consuming only 0.1 mA per channel to minimise the power required for VGA control in wireless base stations, as well as to operate tuneable laser modules, CNC machines and portable medical devices, such as oscilloscopes and portable blood analysers
• Reduces cost and board space with an integrated precision reference that provides a 20-mA sink/source capability to eliminate the need for an external buffer
• Supports different control loops with options for both reset to zero-scale and reset to mid-scale to provide greater design flexibility
• Characterised for harsh industrial environments up to 125°C.
TI offers a variety of free tools and support to speed development with the DAC8562 family.
These include:
• Two evaluation modules for quick evaluation; the DAC8562EVM and DAC7562EVM
• An IBIS model to verify board signal integrity requirements
• Reference designs for analogue output modules in PLCs and high-voltage, bipolar output control applications, which are included in the DAC8562 data sheet
Devices in the DAC8562 family are pin-for-pin compatible and are all now in either a 3mm x 3mm QFN or 3mm x 5mm MSOP package.
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