Preliminary Technical Data

ADF7020

Rev. PrH | Page 27 of 40

REGISTER 2—TRANSMIT MODULATION REGISTER (ASK/OOK MODE)

P6

0

0

0

0

.

.

1

.

.

.

.

.

.

.

1

.

.

.

.

.

.

.

1

P2

X

0

0

1

.

.

1

P1

X

0

1

0

.

.

1

POWER AMPLIFIER OUTPUT HIGH LEVEL

PA OFF

–16.0dBm

–16 + 0.45dBm

–16 + 0.90dBm

.

.

13dBm

D6

X

0

0

0

0

.

.

1

.

.

.

.

.

.

.

.

1

D5

X

X

0

0

.

.

.

1

D2

X

X

0

0

1

.

.

1

D1

X

X

0

1

0

.

.

1

POWER AMPLIFIER OUTPUT LOW LEVEL

OOK MODE

PA OFF

–16.0dBm

–16 + 0.45dBm

–16 + 0.90dBm

.

.

13dBm

DI1

0

1

TxDATA

TxDATA

MODULATION PARAMETER

POWER AMPLIFIER

GFSK MOD

CONTROL

PA BIAS

MODULATION

SCHEME

ADDRESS

BITS

PE1

0

1

POWER AMPLIFIER

OFF

ON

MP1

0

1

MUTE PA UNTIL

LOCK DETECT HIGH

OFF

ON

PA2

0

1

0

1

PA1

0

0

1

1

PA BIAS

5

µA

7

µA

9

µA

11

µA

IC2

X

IC1

X

MC3

X

MC2

X

MC1

X

S3

0

0

1

0

1

S2

0

0

0

1

1

MODULATION SCHEME

FSK

GFSK

ASK

OOK

G - OOK

S1

0

1

0

1

1

Figure 28.

Note:

1. See the Transmitter section for a description of how the PA bias affects power amplifier level. Default level is 9 µA.