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Replies: 1
Views: 88
Part Number: TPL1401
Can I provide an external reference to the TPL1401? If so, how?
Best,
Katlynne Jones
Yes. By default, the TPL1401 uses the VDD supply voltage as the reference and you can supply an external reference to that pin. If using the supply as the reference, this means that the reference needs to fall in the 1.8V to 5.5V supply range of the TPL1401. The TPL1401 has an internal precision reference of 1.21V which can be enabled in the GENERAL_CONFIG. Using the OUT_SPAN register bits, a gain of 1.5x, 2x, 3x, 4x on the reference can be achieved as well.
(Register table taken from TPL1401 datasheet version * Sept 2020)
The TPL1401 can be found in many common applications:
End equipment
Url
Exit and emergency lighting
www.ti.com/.../exit-emergency-lighting
Barcode scanners
www.ti.com/.../barcode-scanner
Barcode readers
www.ti.com/.../barcode-reader
Smart speakers
www.ti.com/.../smart-speaker
Video doorbells
www.ti.com/.../video-doorbell
Cordless vacuum cleaners
www.ti.com/.../cordless-vacuum-cleaner
Robotic lawn mowers
www.ti.com/.../robotic-lawn-mower
Laser distance meter
www.ti.com/.../laser-distance-meter
You can find some additional information about the TPL1401 here:
TPL1401
TPL1401EVM
You can find more information about precision DACs here:
Precision DAC Learning Center
www.ti.com/.../learning-center.html
TI Precision Labs - DACs
training.ti.com/ti-precision-labs-dacs
Data Converter Circuit Cookbook
www.ti.com/.../data-converter-circuits.html