Adjustable, High-Linearity,

SiGe Dual-Band LNA/Mixer ICs

24

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20

19

18

17

16

15

14

13

1

2

3

4

5

6

7

8

11

R6

7.5k

R4

2k

R1

20k

BUFFERED

LO OUTPUTS

C5

100pF

C6

22pF

C7

100pF

C12

3.9pF

C14

1.5pF

C15

6800pF

C18

1pF

C2

100pF

C3

100pF

C4

22pF

1.65nH

1pF

PCS DUPLEXER

DIPLEXER

AMPS

LO

PCS

LO

CELLULAR

DUPLEXER

3.3pF

6800pF

C19

2.7pF

C17

6800pF

C11

3.9pF

C8

2.2pF

C10

1000pF

C13

0.01

µF

C9

1000pF

L3

270nH

L4

120nH

L5

120nH

LOGIC

INPUT

FM

TO VGA

184MHz

184MHz

869MHz–894MHz

1930MHz–1990MHz

TO VGA

R5

20k

R2

51

Ω

R3

51

Ω

9

10

MAX2326

LNAINH

RLNA

LNAOUTL

LNAOUTH

GAIN

LIN

BAND

LNAINL

LOHIN

LOLIN

MIXINH

L6

5.6nH

L1

1.8nH

L2

6.8nH

3.85nH

MIXINL

RBIAS

CDMA+

CDMA-

BUFFEN

FMOUT

LOLOUT

LOHOUT

/2

MAX2326

(DUAL BAND, DUAL VCO INPUTS, AND DUAL IF OUTPUTS WITH LO DIVIDER)

NOTE: THE MAX2326 IS RECOMMENDED FOR

DUAL-BAND, TRIPLE-MODE PHONES.

KEY FEATURES: TWO LO INPUT/OUTPUT PORTS

FOR SEPARATE VCOs, A FREQUENCY DIVIDER

TO ALLOW THE USE OF A PCS VCO FOR BOTH

BANDS.

/2

6800pF

4.7nH

C1

100pF

R11

30

Ω

Typical Application Circuits (continued)