Data Sheet

ADRF6702

Rev. B | Page 23 of 36

REGISTER 3—Σ-Δ MODULATOR DITHER CONTROL

(DEFAULT: 0x10000B)

With Register 3, Bits[2:0] set to 011, the on-chip Σ-Δ modulator

dither control register is programmed as shown in Figure 44. The

recommended and default setting for dither enable is enabled (1).

The default value of the dither magnitude (15) should be set to a

recommended value of 1.

though a value of 1 is typically recommended.

DITHER

ENABLE

DB23

DB22

DB21

DB20

DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

0

DITH1

DITH0

DEN

DV16 DV15 DV14 DV13 DV12 DV11 DV10 DV9 DV8 DV7 DV6 DV5 DV4 DV3 DV2 DV1 DV0 C3(0) C2(1) C1(1)

DITH1

DITH0

00

01

10

11

DEN

0

1

DITHER

MAGNITUDE

DITHER RESTART VALUE

CONTROL BITS

DITHER MAGNITUDE

15 (DEFAULT)

7

3

1 (RECOMMENDED)

DITHER ENABLE

DISABLE

ENABLE (DEFAULT, RECOMMENDED)

DV16 DV15 DV14 DV13 DV12 DV11 DV10 DV9 DV8 DV7 DV6 DV5 DV4 DV3 DV2 DV1 DV0

00

0

0

0

0

0

00

0

0

0

0

000

1

...

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...

...

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...

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...

...

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11

1

1

1

1

1

11

1

1

1

1

111

DV2

0

...

...

11

0x00001 (DEFAULT)

...

...

0x1FFFF

DITHER RESTART

VALUE

Figure 44. Register 3—Σ-Δ Modulator Dither Control Register Map