7

Data Sheet - Rev 2.5

03/2012

ALT6705

APPLICATION INFORMATION

Table 7: Bias Control

Figure 3: Evaluation Board Schematic

To ensure proper performance, refer to all related

Application Notes on theANADIGICS web site:

http://www.anadigics.com

Shutdown Mode

Thepoweramplifiermaybeplacedinashutdownmode

byapplyinglogiclowlevels(seeOperatingRanges

Bias Modes

The power amplifier may be placed in either Low,

Medium or High Bias modes by applying the

appropriate logic level (see Operating Ranges table)

lists the recommended modes of operation for various

applications.

Three operating modes are recommended to optimize

currentconsumption.HighBias/HighPoweroperating

dBm,thePAshouldbe“ModeSwitched”toMedium

switchedtoLowPowerModeforevenlowerquiescent

current consumption.

C3

330 pF

C4

2.2 µF ceramic

1

6

7

10

8

5

4

3

GND

C1

0.01 µF

29

C5

2.2 µF

C2

0.01 µF

GND at slug

C9

100 pF

APPLICATION

LEVELS

BIAS

MODE

Lowpower

(LowBiasMode)



+7dBm

Low

+1.8 V

+1.8 V

+1.8 V

3.1 - 4.35 V

> 3.1 V

Medpower

(Medium Bias Mode)

>7dBm



+17dBm

Low

+1.8 V

+1.8 V

0 V

3.1 - 4.35 V

> 3.1 V

Highpower

(High Bias Mode)

>+17dBm

High

+1.8 V

0 V

0 V

3.1 - 4.35 V

> 3.1 V

Shutdown

-

Shutdown

0 V

0 V

0 V

3.1 - 4.35 V

> 3.1 V