REV. C

AD8316

–17–

Table II. Evaluation Board Configuration Options

Component

Function

Default Condition

TP1, TP2

Supply and Ground Vector Pins.

Not Applicable

SW1

Device Enable. When in Position A, the ENBL pin is connected to VPOS and

SW1 = A

the AD8316 is in operating mode. In Position B, the ENBL pin is grounded,

putting the device into power-down mode.

SW2

Band Select. When in Position A (OUT1), the BSEL pin is connected to VPOS

SW2 = OUT1

and the AD8316 OUT1 is in operation mode. In Position B (OUT2), the

BSEL pin is grounded and the AD8316 OUT2 is in operation while OUT1 pin

is shut down.

R1, R2

Input Interface. The 52.3

Ω resistor in Position R2 combines with the AD8316’s

R2 = 52.3

Ω (Size 0603)

internal input impedance to provide a broadband input impedance of around

R1 = 0

Ω (Size 0402)

50

Ω. A reactive match can be implemented by replacing R2 with an inductor

and R1 (0

Ω) with a capacitor. In addition, the RF microstrip line has been

provided with a clean mask ground plane to provide additional matching. Note

that the AD8316’s RF input is internally ac-coupled.

R3, R4, R12,

Output Interface. R4 and C2, R9 and C7 can be used to check the response

R4 = C2 = Open (Size 0603)

R9, C2, C7

capacitive and resistive loading, respectively. R3/R4 and R12/R9 can be used to

R9 = C7 = Open (Size 0603)

reduce the slope of OUT1 and OUT2.

R3 = R12 = 0

Ω (Size 0603)

C1, C5

Power Supply Decoupling. The nominal supply decoupling consists of

C1 = C5 = 0.1

µF (Size 0603)

a 0.1

µF capacitor.

C4, C6, R10,

Filter Capacitors/Resistors. The response time of OUT1, OUT2 can be modified

C4 = C6 = Open (Size 0603)

R11

by placing the capacitors between FLT1, FLT2 and resistors R10, R11

R10 = R11 = Open (Size 0603)

to ground.

LK1, LK2

Measurement Mode. A quasi-measurement mode can be implemented by

LK1, LK2 = Installed

installing LK1 and LK2 (connecting an inverted OUT1 or OUT2 to VSET) to

yield the nominal relationship between RFIN and VSET. In this mode, a large

capacitor (0.01

µF or greater) must be installed in C4 and C6 and a 0 Ω

resistors to ground in R10 and R11. To select OUT1 or OUT2, SW3 must

be in the OUT1 position or the OUT2 position, respectively.

SW3

Measurement Mode Output Select. When in measurement mode, output 1

SW3 = OUT1

or output 2 can be selected by positioning SW3 to the OUT1 position or the

OUT2 position, respectively.