DAC39RF10 datasheet(209/232 Pages) TI2

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9.3 Power Supply Recommendations

The device has three supply voltages and requires seven supply domains to achieve data sheet performance as

shown in Table 9-4.

Table 9-4. Recommended Power Supply Domains

Voltage

Supply Domain

Device Supplies

+1.8V

VDDA

VDDA18A, VDDA18B

VDDIO

VDDCSR

VDDCLK, VDDSYS, VDDR

+1V

VDDL

VDDLA, VDDLB

VDDCLK

VDDCLK10

DVDD

VDDDIG, VDDT, VDDDEA and VDDDEB

-1.8V

VEEx

VEEAM18, VEEBM18

The recommended power supply is shown in Figure 9-20 for -SP grade and Figure 9-21 for -SEP grade.

The power-supply voltages must be low in noise and provide the needed current to achieve rated device

performance. A step down high-efficiency switching converter is used first, followed by a second stage of

regulation using LDOs to provide switching noise reduction and improved voltage accuracy. The user can also

refer to the TI WEBENCH® Power Designer which can be used to select and design the individual power supply

elements as needed. The recommended switching regulators for are:

• -SP Grade:

– TPS50601A-SP = +2.2V for the VDDLA, VDDLB and VDDCCLK10 domains

– TPS50601A-SP = +3V for the VDDA18A, VDDA18B, VDDIO, VDDSYS18, VDDR18 and VDDCLK18

domains

– TPS50601A-SP = +1V for VDDDIG, VDDEA, VDDEB and VDDT

– TPS7H4011-SP = -4.2V for VEEAM18 and VEEBM18 domains

• -SEP Grade:

– TPS7H4010-SEP = +2.2V for the VDDLA, VDDLB and VDDCCLK10 domains

– TPS7H4010-SEP = +3V for the VDDA18A, VDDA18B, VDDIO, VDDSYS18, VDDR18 and VDDCLK18

domains

– TPS7H4010-SEP = +1V for VDDDIG, VDDEA, VDDEB and VDDT

– TPS7H4010-SEP = -3.3V for VEEAM18 and VEEBM18 domains

and recommended LDOs include:

• -SP grade

– TPS7H1111-SP for +1.8V and +1V

– TPS7A4501-SP for -1.8V

• -SEP grade

– TPS7H1111-SEP for +1.8V and +1V

– TPS7H1210-SEP for -1.8V

www.ti.com

DAC39RF10-SP, DAC39RF10-SEP

DAC39RFS10-SP, DAC39RFS10-SEP

SBAS932A – MARCH 2024 – REVISED FEBRUARY 2026

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Product Folder Links: DAC39RF10-SP DAC39RF10-SEP DAC39RFS10-SP DAC39RFS10-SEP

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