Rainbow-electronics MAX2327 Bedienungsanleitung PDF herunterladen (Seite 13)

MAX2320/21/22/24/26/27

Adjustable, High-Linearity,

SiGe Dual-Band LNA/Mixer ICs

______________________________________________________________________________________ 13

Pin Description

1 1—

— 22

3 —3

LNA Bias-Setting Resistor Connection. For nominal bias,

connect a 20kΩ resistor to ground. The resistor value

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

modes.

RLNA3

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

and an external series capacitor as part of the

matching network.

LNAOUTL2

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

and an external series capacitor as part of the

matching network.

LNAOUTH1

4 4—

— —4

Logic Output. Indicates mode of operation. V

MODEOUT

high in FM mode.

MODEOUT—

— 55

6 76

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.

LNAINL5

High-Band RF Input. Requires a blocking capacitor and

a matching network. The capacitor may be used as part

of the matching network.

LNAINH4

— 6—

7 —7

Linearity-Select Logic Input. See Detailed Description for

control modes.

LIN7

8 —8

— 99

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

and in cellular digital mode for MAX2320/MAX2324.

LOLIN9

Gain-Select Logic Input. See Detailed Description for

control modes.

GAIN8

Band-Select Logic Input. See Detailed Description for

control modes.

BAND

10 10—

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.

LOHIN10

MAX2320

MAX2321

MAX2326

MAX2322

NAME

MAX2324 MAX2327

FUNCTION

— 8—

Cellular-Band Mode Select Logic Input. See Detailed

Description for control modes.

MODE—

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 27 28

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