MAX2092ETPT 查看數據表（PDF） - Maxim Integrated

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MAX2092ETPT

700MHz to 2700MHz Analog VGA with Threshold Alarm Circuit and Error Amplifier for Level Control

Maxim Integrated 

MAX2092

700MHz to 2700MHz Analog VGA with Threshold

Alarm Circuit and Error Amplifier for Level Control

2.5dB PAD

38dB

IF_IN

-24dBm

TO +1dBm

MAX2091

40dB

LO

IF

ALARM

OUT

IF PLVLSET

(ANALOG CONTROL)

INPUT

FROM

EXTERNAL

DETECTOR

ALARM

THRESHOLD

Figure 1. Cascaded IF-RF Lineup Using the MAX2091 + MAX2092

RF PLVLSET

(ANALOG CONTROL)

MAX2092

ALARM

THRESHOLDS

INPUT

FROM EXTERNAL

DETECTOR

RF_OUT

-20.5dBm

TO +5dBm

RF

ALARM

OUT

DET_VIN

In closed ALC-loop mode, avoid directly loading pins

AMP_OUT and DET_VIN with capacitance in excess of

10pF on each pin. In closed ALC-loop mode, this can

cause ringing or instability in the power-control loop. As

in any closed-loop system, one must be careful not to load

DET_VIN or AMP_OUT with additional external circuitry.

Therefore, it is suggested that in the closed-loop ALC

mode, no additional connections be made to DET_VIN

or AMP_OUT. AMP_OUT and DET_VIN support a total

trace routing capacitance of 10pF or less. Connect pin

9 to the RF ground plane with a via separated from

the exposed pad (EP) ground connection. Pin 9 must

not connect to the exposed pad or share a ground with

any other component, and must connect directly to the

solid ground plane below. As a reference, refer to the

MAX2092EVKIT+ PCB artwork.

Layout Considerations

The pin configuration of the MAX2092 is optimized to

facilitate a very compact physical layout of the device

and its associated discrete components. The exposed

pad of the device’s 20-pin TQFN-EP package provides a

low thermal-resistance path to the die. It is important that

the PCB on which the device is mounted be designed to

conduct heat from the EP. In addition, provide the EP with

a low inductance path to electrical ground. The EP MUST

be soldered to a ground plane on the PCB, either directly

or through an array of plated via holes. Pin 9 must not

connect to the exposed pad or share a ground with any

other component and must connect directly to the solid

ground plane below.

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