MAX2321 datasheet(13/28 Pages) MAXIM

13 / 28 page

Adjustable, High-Linearity,

SiGe Dual-Band LNA/Mixer ICs

______________________________________________________________________________________

Pin Description

—

LNA Bias-Setting Resistor Connection. For nominal bias,

connect a 20k

Ω resistor to ground. The resistor value

controls the LNA’s linearity in high-gain, high-linearity

modes.

RLNA

Low-Band LNA Output. Connect a pull-up inductor to

VCC and an external series capacitor as part of the

matching network.

LNAOUTL

High-Band LNA Output. Connect a pull-up inductor to

VCC and an external series capacitor as part of the

matching network.

LNAOUTH

—

Logic Output. Indicates mode of operation. VMODEOUT =

high in FM mode.

MODEOUT

—

Shutdown Logic Input. See Detailed Description for con-

trol modes.

SHDN

—

Low-Band RF Input. Requires a blocking capacitor and a

matching network. The capacitor may be used as part of

the matching network.

LNAINL

High-Band RF Input. Requires a blocking capacitor and

a matching network. The capacitor may be used as part

of the matching network.

LNAINH

—

Linearity-Select Logic Input. See Detailed Description for

control modes.

LIN

—

Low-Frequency LO Input. Used in FM mode on all parts

and in cellular digital mode for MAX2320/MAX2324.

LOLIN

Gain-Select Logic Input. See Detailed Description for

control modes.

GAIN

Band-Select Logic Input. See Detailed Description for

control modes.

BAND

—

High-Frequency LO Input. For MAX2321, used in cellular

digital mode and in PCS mode with the doubler active.

For MAX2320/MAX2327, used in PCS mode without the

doubler. For MAX2322, used with or without the doubler.

For MAX2326, used in PCS mode and cellular digital

mode with the divide-by-two.

LOHIN

MAX2320

MAX2321

MAX2326

MAX2322

NAME

MAX2324

MAX2327

FUNCTION

—

Cellular-Band Mode Select Logic Input. See Detailed

Description for control modes.

MODE

—

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