ADL8100ACPZN-R7 datasheet(25/27 Pages) AD

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Data Sheet

ADL8100

APPLICATIONS INFORMATION

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Rev. 0 | 25 of 27

The basic connections for operating the ADL8100 are shown in Fig-

ure 105. The bias current is set by connecting a resistor between

the RBIAS and VDD pins. When using 5 V VDD, a resistor value of

560 Ω (R1) is recommended to achieve an IDQ of 220 mA. Table

9 details the resulting IDQ for the various RBIAS values where the

resistor is tied to 5 V.

The drain voltage is applied to the VDD pin through an external

connectorized bias tee (Marki BT-0040). For more information on

this circuit, refer to the EVAL-ADL8100 user guide.

Figure 105. Typical Application Circuit (CIN Is the Input Capacitance.)

RECOMMENDED BIAS SEQUENCING

See the EVAL-ADL8100 user guide for the recommended bias

sequencing information.

Table 9. Recommended Bias Resistor Values for VDD = 5 V

RBIAS (Ω)

IDQ (mA)

IDQ_AMP (mA)

IRBIAS (mA)

453

240

234

560

220

215

698

200

195.5

4.5

866

180

176

1180

160

157

OPERATION WITH A SURFACE-MOUNT BIAS

TEE

Figure 106 shows the ADL8100 operating with a bias tee composed

of surface-mount components. For more information on this circuit

and for a comparison of the two biasing techniques, refer to the

ADL8100-EVALZ user guide.

Figure 106. ADL8100 Operated with a Surface-Mount Bias Tee Circuit

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