AD8367
Table IV. Evaluation Board Configuration Options
Component
TP1, TP2
TP3, TP4
SW1
Function
Default Condition
Not Applicable
Not Applicable
SW1 ꢀ A
Supply and Ground Vector Pins
Mode and Gain Vector Pins
VGA/AGC Select: Used to select VGA (position A) or AGC
(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.
Set to position B for an increasing gain with VGAIN, position A for
decreasing gain law.
SW2 ꢀ B
LK1
Device Enable: When LK1 is installed, the ENBL pin is connected
to the positive supply and the AD8367 is in operating mode.
SW3 ꢀ PWUP
R1, R2
Input Interface: R1 and R2 are used to provide an L-pad impedance-
transforming network. The broadband matching network transforms
a 50 ꢃ source to match a 200 Ω load with 11.5 dB of insertion loss.
R1 ꢀ 57.6 Ω (Size 0603)
R2 ꢀ 174 Ω (Size 0603)
R3, R4, C4
Output Interface: R3 and R4 are used to transform a 50 Ω load ter-
mination to look like a 200 Ω load with 11.5 dB of insertion loss.
The AC coupling capacitor, C4, can be increased to obtain a lower
high-pass corner frequency.
R3 ꢀ 57.6 Ω (Size 0603)
R4 ꢀ 174 Ω (Size 0603)
C4 ꢀ 0.1 ꢁF (Size 0603)
C1, C2, C3, R5, R6
Power Supply Decoupling: The nominal supply decoupling consists
of a 1 ꢁF capacitor to ground, a 4.7 Ω series resistor, and a 0.1 ꢁF
capacitor to ground. The same de-coupling network should be used on
both VPSI and VPSO supply lines.
C1 ꢀ 1 ꢁF (Size 0603)
R5 ꢀ R6 ꢀ 4.7 Ω (Size 0805)
C2 ꢀ C3 ꢀ 0.1 ꢁF (Size 0603)
C5
Internal Supply Decoupling: Capacitor C5 provides mid-supply
decoupling.
C5 ꢀ 10 nF (Size 0603)
CHPFL
CAGC
R7
Filter Capacitor: HPFL capacitor, sets the high pass corner frequency.
CHPFL ꢀ 0.1 ꢁF (Size 0805)
RHP ꢀ 0 Ω (Size 0603)
AGC Filter Capacitor: Capacitor, CAGC, sets closed loop AGC
response time.
CAGC = 0.1 ꢁF (Size 0805)
Mode Pullup Resistor
R7 ꢀ 10 kΩ (Size 0805)
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
14-Lead (TSSOP)
(RU-14)
0.201 (5.10)
0.193 (4.90)
14
8
0.177 (4.50)
0.169 (4.30)
0.256 (6.50)
0.246 (6.25)
1
7
PIN 1
0.006 (0.15)
0.002 (0.05)
0.0433 (1.10)
MAX
8؇
0؇
0.0256 0.0118 (0.30)
0.028 (0.70)
0.020 (0.50)
SEATING
PLANE
0.0079 (0.20)
0.0035 (0.090)
(0.65)
BSC
0.0075 (0.19)
–16–
REV. 0
ADI [ ADI ]
