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Part Number: TPL1401
I see that the TPL1401 powers down to high impedance, or Hi-Z. What is the purpose of this?
By default, the TPL1401 will power down to high impedance. This is important for applications like power supply margining and scaling where you don’t want the device to drive the output low when it’s powered down. When taken out of power down, the device will power up with the voltage level that is stored in the nonvolatile memory.
To modify the power down state, write the desired code based on the table below to the DPOT_PDN bits in the GENERAL_CONFIG register.
(Figure taken from TPL1401 datasheet version * Sept 2020)
The TPL1401 can be found in many common applications:
Exit and emergency lighting
Cordless vacuum cleaners
Robotic lawn mowers
Laser distance meter
You can find some additional information about the TPL1401 here:
You can find more information about precision DACs here:
Precision DAC Learning Center
TI Precision Labs - DACs
Data Converter Circuit Cookbook
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