DAC39RF10 datasheet(102/232 Pages) TI2

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Channel

Bonder

DUC0

DUC1

DUC2

DUC3

DESDAC

Input 0

Input 1

Input 2

Input 3

DAC A

DAC B

Figure 7-13. DUC Block with real output

Table 7-5. DSP Modes with Single Output Signal

Input

Steams

(Interpolati

on)

NCO_EN

DUC_FORMAT

DAC_SRC0

value

MXMODE0/

Description

Real

0x1

NRZ, RTZ,

RF, DES2x

Single channel mode (no up-conversion).

Real

0x1

DES1x

Single channel mode with dual-edge samples w/o

interpolation (DES1X). The JESD204C interface

provides all samples (no interpolation).

2, 4, 6 or 8

2-256x

Real

0x1, 0x3,

0x7, 0xF

NRZ, RTZ,

RF, DES2x

1-4 DUC channels with single real output

DAC_SRC0 settings are for 1, 2, 3, or 4 DUC

channels respectively.

These modes only produce one output signal, so only one DAC is required. The table shows the programming to use DACA (MXMODE1

should be set to disabled). The user may elect to use DACB instead by programming DAC_SRC1 and MXMODE1 (and setting MXMODE0

to disabled). The user may also program DAC_SRC1=DAC_SRC0 and MXMODE1=MXMODE0 and then tie the DAC outputs together to

get more output power.

Table 7-6. DSP Modes with Dual Output Signal

Input

Steams

(Interpola

tion)

NCO_EN

DUC_FO

RMAT

DAC_SRC0

value

DAC_SRC1

value

MXMODE

0/1

Description

N/A

0x1

0x2

NRZ,

RTZ, RF,

DES2x

Dual channel mode (no up-conversion)

2, 4, 6 or

2-256x

Real

any bits set

NRZ,

RTZ, RF,

DES2x

1-4 DUC channels with two real outputs

2-256x

1 or 0

Complex

0x1

0x4

NRZ,

RTZ, RF,

DES2x

1 DUC channel with complex output:

DACA outputs real samples

DACB outputs imaginary samples

2-256x

1 or 0

Complex

0x3

0xC

NRZ,

RTZ, RF,

DES2x

2 DUC channels with complex output

These modes produce two output signals (and uses both DACs). The user may elect to swap the values programmed into DAC_SRC0 and

DAC_SRC1 to swap the output signals. Typically MXMODE0 and MXMODE1 are set to the same setting, however this is not required.

DAC39RF10-SP, DAC39RF10-SEP

DAC39RFS10-SP, DAC39RFS10-SEP

SBAS932A – MARCH 2024 – REVISED FEBRUARY 2026

www.ti.com

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