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MAX2323EVKIT

Triple/Dual-Mode CDMA LNA/Mixers

Maxim Integrated 

Triple/Dual-Mode

CDMA LNA/Mixers

Pin Description

PIN

MAX2323 MAX2325

1

1

—

2, 10, 23

2

—

NAME

FUNCTION

RLNA

N.C.

PLNAIN

LNA Bias-Setting Pin. For nominal bias, connect a 24kΩ resistor to ground. This

resistor value can be adjusted to alter the linearity of the input LNA in high-gain,

high-linearity CDMA modes.

No Connection. Leave this pin floating.

High-Band RF Input Port. Blocking capacitor is required, which may be used as part of

the matching network.

3, 8, 11,

12, 13, 18,

24, 25, 27

3, 8, 11, 12,

13, 17, 18,

24, 25, 27

GND

Ground

4

5

6

7

9

10

14

15

16

17

19, 20

21

22

23

26

—

4

5

6

7

9

—

14

15

16

—

19, 20

21

22

—

—

26

CLNAIN

SLEEP

G2

G1

LOLIN

LOHIN

MODE

FMOUT

VCC

BAND

CDMA-,

CDMA+

RBIAS

CMIXIN

PMIXIN

PLNAOUT

VCC

Low-Band RF Input Port. Blocking capacitor is required, which may be used as part of

the matching network.

Logic Input. High shuts off entire device.

Logic Input. See Tables 1 and 2 for details.

Logic Input. See Tables 1 and 2 for details.

Low-Frequency LO Input Port. Requires blocking capacitor, which may be used as

part of an optional matching network.

High-Frequency LO Input Port. Requires blocking capacitor, which may be used as

part of an optional matching network.

Logic Input. See Tables 1 and 2 for details.

FM IF Output Port. Requires a pull-up inductor and a DC blocking capacitor, which

may be used as part of the matching network.

2.7V to 3.6V Supply Pin. Must be capacitively bypassed near the pin.

Logic Input. High selects high band (PCS). Low selects low band (cellular).

Differential Output Port for CDMA Mode. Requires pull-up inductors and blocking

capacitors, which may be used as part of the matching network.

Bias Setting Pin. For nominal bias, connect a 20kΩ resistor to ground. This resistor

value can be adjusted to alter the linearity of the mixers in all modes and the LNA in all

modes except high gain and high linearity.

Low-Band Mixer Input Port. Requires blocking capacitor, which may be used as part of

the matching network.

High-Band Mixer Input Port. Requires blocking capacitor, which may be used as part

of the matching network.

High-Band LNA Output Port. This port requires an external pull-up inductor and series

capacitor as part of the matching network.

2.7 to 3.6V Supply Pin. Bypassing is not necessary at this pin.

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