Data Sheet

ADF4351

Rev. 0 | Page 17 of 28

BS8

BS7

...

...

...

...

...

...

...

...

...

...

BS2

BS1

BAND SELECT CLOCK DIVIDER

0

0

0

1

1

0

0

1

0

2

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

1

1

0

0

252

1

1

0

1

253

1

1

1

0

254

1

1

1

1

255

D3

RF OUT

0

DISABLED

1

ENABLED

OUTPUT

POWER

DB31 DB30 DB29 DB28 DB27 DB26 DB25 DB24 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

0

0

0

0

0

0

0

D13

D12

D11

D10

BS8

BS7

BS6

BS5

BS4

BS3

BS2

BS1

D9

D8

D7

D6

D5

D4

D3

D2

D1

C3(1) C2(0) C1(0)

CONTROL

BITS

8-BIT BAND SELECT CLOCK DIVIDER VALUE

AUX

OUTPUT

POWER

RF DIVIDER

SELECT

RESERVED

D2

D1

OUTPUT POWER

0

0

–4dBm

0

1

–1dBm

1

0

+2dBm

1

1

+5dBm

D5

D4

AUX OUTPUT POWER

0

0

–4dBm

0

1

–1dBm

1

0

+2dBm

1

1

+5dBm

D6

AUX OUT

0

DISABLED

1

ENABLED

D7

AUX OUTPUT

SELECT

0

FUNDAMENTAL

1

DIVIDED OUTPUT

D8

MUTE TILL

LOCK DETECT

0

MUTE DISABLED

1

MUTE ENABLED

D9

VCO

POWER-DOWN

0

VCO POWERED UP

1

VCO POWERED DOWN

D12

D11

RF DIVIDER SELECT

0

0

÷1

0

0

÷2

0

1

÷4

D10

0

1

0

0

1

÷8

1

1

0

÷16

0

1

0

÷32

1

1

1

÷64

0

D13

FEEDBACK

SELECT

0

FUNDAMENTAL

1

DIVIDED

DBB

Figure 28. Register 4 (R4)

DB31 DB30 DB29 DB28 DB27 DB26 DB25 DB24 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

0

0

0

0

0

0

0

D15

D14

0

1

1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

C3(1) C2(0) C1(1)

RESERVED

RESERVED

LD PIN

MODE

RESERVED

CONTROL

BITS

D15

D14

LOCK DETECT PIN OPERATION

0

0

LOW

0

1

DIGITAL LOCK DETECT

1

0

LOW

1

1

HIGH

Figure 29. Register 5 (R5)