REV. 0

–16–

AD8367

Table IV. Evaluation Board Configuration Options

Component

Function

Default Condition

TP1, TP2

Supply and Ground Vector Pins

Not Applicable

TP3, TP4

Mode and Gain Vector Pins

Not Applicable

SW1

VGA/AGC Select: Used to select VGA (position A) or AGC

SW1

A

(position B) mode of operation. SW2 must be set for position A for

AGC mode of operation.

SW2

MODE Select: Used to select positive or negative VGA slope.

SW2

B

decreasing gain law.

LK1

Device Enable: When LK1 is installed, the ENBL pin is connected

SW3

PWUP

to the positive supply and the AD8367 is in operating mode.

R1, R2

Input Interface: R1 and R2 are used to provide an L-pad impedance-

R1

57.6

Ω (Size 0603)

transforming network. The broadband matching network transforms

R2

174

Ω (Size 0603)

a 50

source to match a 200

Ω load with 11.5 dB of insertion loss.

R3, R4, C4

Output Interface: R3 and R4 are used to transform a 50

Ω load ter-

R3

57.6

Ω (Size 0603)

mination to look like a 200

Ω load with 11.5 dB of insertion loss.

R4

174

Ω (Size 0603)

The AC coupling capacitor, C4, can be increased to obtain a lower

C4

0.1

F (Size 0603)

high-pass corner frequency.

C1, C2, C3, R5, R6

Power Supply Decoupling: The nominal supply decoupling consists

C1

1

F (Size 0603)

of a 1

F capacitor to ground, a 4.7

Ω series resistor, and a 0.1 FR5

R6

4.7

Ω (Size 0805)

capacitor to ground. The same de-coupling network should be used on

C2

C3

0.1

F (Size 0603)

both VPSI and VPSO supply lines.

C5

Internal Supply Decoupling: Capacitor C5 provides mid-supply

C5

10 nF (Size 0603)

decoupling.

Filter Capacitor: HPFL capacitor, sets the high pass corner frequency.

0.1

F (Size 0805)

0

Ω (Size 0603)

response time.

R7

Mode Pullup Resistor

R7

10 k

Ω (Size 0805)

14-Lead (TSSOP)

(RU-14)

14

8

7

1

0.256 (6.50)

0.246 (6.25)

0.177 (4.50)

0.169 (4.30)

PIN 1

0.201 (5.10)

0.193 (4.90)

SEATING

PLANE

0.006 (0.15)

0.002 (0.05)

0.0118 (0.30)

0.0075 (0.19)

0.0256

(0.65)

BSC

0.0433 (1.10)

MAX

0.0079 (0.20)

0.0035 (0.090)

0.028 (0.70)

0.020 (0.50)

8

0

OUTLINE DIMENSIONS

Dimensions shown in inches and (mm).