MAX2406 查看數據表（PDF） - Maxim Integrated

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MAX2406

Low-Cost Downconverter with Low-Noise Amplifier

Maxim Integrated 

Low-Cost Downconverter

with Low-Noise Amplifier

____________________________________Typical Application Functional Diagram

RF BPF

VCC VCC

RF BPF

LNAIN

LNAOUT

LNA

MAX2406

BIAS

CONTROL

RX MIXER

IF

IF

LO

BUFFER

MATCH

IF BPF

IF OUT

RXEN

LO SOURCE

LO port is internally terminated to 50Ω and provides a

good match (a VSWR of approximately 1.2:1 to 2GHz,

and a VSWR of approximately 2:1 to 3GHz).

Layout

A properly designed PC board is an essential part of

any RF/microwave circuit. Be sure to use controlled

impedance lines on all high-frequency inputs and out-

puts, use low-inductance connections to ground on all

GND pins, and place decoupling capacitors close to all

VCC connections.

For the power supplies, a star topology works well.

Each VCC node in the circuit has its own path to a cen-

tral VCC and a decoupling capacitor that provides low

impedance at the RF frequency of interest. The central

VCC node has a large decoupling capacitor as well.

This provides good isolation between the different sec-

tions of the MAX2406. The MAX2406 EV kit layout can

be used as a guide to integrating the MAX2406 into

your design.

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