6

Typical RF Front End AGC Application Diagram

NOTE:

5. LNA degeneration inductance built with a PC trace to ground in combination with VLNA power supply to improve IIP3. A transmission line

inductance of 1.2nH at 882MHz to a solid ground plane is typical (see Test Diagram).

2

3

4

5

6

7

1

8

9

10

11

12

13

14

AGC_CTRL

PIN_O_IBIAS1

LNA_OUT

LNA_IN

PIN_O_IBIAS2

PIN_I_GND

RX_PE

R_REF

BIAS_GND

FM_OUT+

FM_OUT-

CDMA_OUT+

CDMA_OUT-

LO_IN

RF_RET

LO_RET

RF_IN

MIX_IND

SEL

?

0.01

HFA3665

PE

SEL

100p

RF_LO_INPUT

GND

82n

82n

8.2n

49.9k

9.53k

100p

12p

12

12

220p

49.9K

220p

15p

12p

47p

100p

13p

0.33

47p

220p

0.1

18n

15n

100p

4.7p

100p

0.33

2200p

2200p

AGC

LNA_OUT

MACOM MA4P282-1141

PIN

PIN

PIN DIODE:

R1

R2

R3

R4

R5

R6

R7

R8

C1

C2

C3

C4

C5

C6

C7

C8

C9

L1

L2

L4

L5

L6

L7

L8

L9

L10

1.5p

C13

VLNA

6.2K

6.2K

270n

270n

25.3p

25.3p

SAWTEK

855292

390n

330n

5p

6.6p

MURATA SX439A

NOTE 5

Note 1

S+M B4691

FROM

PA

DFY2RR836CR881BHHN

DUPLEXER:

LE

L11

C9

C10

C11

C12

C1

C7

8.2n

4p

4p