SNAS806 September 2020 TPL1401
PRODUCTION DATA
The TPL1401 output amplifier and internal reference can be independently powered down through the DPOT_PDN bits (address D1h).
At power up, the digipot output and the internal reference are disabled by default.
In power-down mode, the digipot output (OUT pin) is in a high-impedance state.
To change this state to 10kΩ-AGND (at power up), use the DPOT_PDN bits (address D1h).
The digipot power-up state can be programmed to any state (power-down or normal mode) using the NVM. Table 7-2 shows the digipot power-down bits.
REGISTER ADDRESS AND NAME | DPOT_PDN[1] | DPOT_PDN[0] | DESCRIPTION |
---|---|---|---|
D1h, GENERAL_CONFIG | 0 | 0 | Power up |
0 | 1 | Power down to 10 kΩ | |
1 | 0 | Power down to high impedance (HiZ) (default) | |
1 | 1 | Power down to 10 kΩ |