Voltage reference has two high current output buffers

Based on a 2.5V bandgap voltage reference, each output on the LT6658 precision voltage reference can be separately configured for any voltage between 2.5 and 6.0V.  Both outputs offer 0.05% initial accuracy, 10ppm/degree C temperature drift and only 1.5ppm of low frequency noise, says Linear Technology. The outputs can drive up to 50 and 150mA, respectively, and sink up to 20mA. Typical load regulation is only 0.1ppm/mA with up to 150mA of load current. In parallel, the buffer outputs can be combined for even higher current capability.

The LT6658 can be used for driving the reference input for a high resolution ADC or DAC using one output, while simultaneously supplying power to other devices using the second output.  Both outputs track each other over temperature and load, allowing them to address applications requiring ratiometric supply rails. The outputs are stable with up to 50 micro F over the specified operating range. With this output capability, it can serve as both reference and regulator combined. Alternatively, the LT6658 can be used to generate a reference plus a virtual ground, or as two matched, tracking references.

The LT6658 is currently available in a 2.5V version. Options for 1.2, 1.8, 3.0, 3.3, and 5.0V will be available in the first half of 2017.



    Leave a Reply

    You must be logged in to post a comment.

    Latest News from Softei

    This news story is brought to you by softei.com, the specialist site dedicated to delivering information about what’s new in the electronics industry, with daily news updates, new products and industry news. To stay up-to-date, register to receive our weekly newsletters and keep yourself informed on the latest technology news and new products from around the globe. Simply click this link to register here: Softei Registration